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Produced by the NASA Center for Aerospace Information (CASI)
(NA.3A-TM-85366) N111BUS OBSEEVATION

k,LULES61Mt 61STEIIi hLQUIRLAEN7S NG-13. EBB

MAL)'i' EE, AttCHIVAi.. TAPIE SPECIFICATION NO.

Ti-)4061 E1,L MAT, hcYIS.L C N 1 (NASA) 61 p

dC al"/MF A01 CSCL 05B G3/82

:484-28668

Unc1as

19679

NASA

NIMBUS Observation Processing

System Requirements Document

#NG-13

ERB Master Archival

Tape Specification No. T134081

ERB MAT

n' JUL 1°84

^Lp

RECEIVED J,

npSA STI FAClurr rn

A^^ DFPT. g

May 1984 \`'y``'`^`^^

Nanonai Aeronautics and

Space Administration

Goddard Space Flight Centor

Greenbeit Maryland 20771
NIMBUS-7

NIMBUS OBSERVATION PROCESSING SYSTEM (MOPS)

REQUIREMENTS DOCUMENT LNG-13

ERB MASTER ARCHIVAL TAPE

TAPE SPECIFICATION NO. T134081 ERB MAT

REVISION I

MAY, 1984

REVISED BY: C^, ____

Sheldon T. Nutter, Jr., ` c ( 05//84 )

REVIEWED BY: , -_

Dr. Richar Tig (05784)

SASC/NOPS E. Project Manager

APPROVED BY:

Lonnie H. Bowlin (05/84)

SASC,'NOPS Program Manager

NOTE: This document was provided to Systems and Applied

Sciences Corporation for review and update as

necessary.
BIBLIOGRAPHIC DATA SHEET

1. Report No. 2. Government Accession No. 3. Recipient's Catalog No.

4. Title and Subtitle 5. Report Date

May 1984

ERB Master Archival Tape

6. Performing Organization Code Specification No. T 134081 ERB MAT

910

7. Author(s) 8. Performing Organization Report No.

Revised b y S. T. Nutter, Jr.

9. Performing Organization Name and Address 10, Work Unit No.

Goddard Space Flight Center

Greenbelt, Mar 11. Contract, or Grant No. y land 20771

13. Type of Re port and Period Coverer

12. Sponsoring Agency Name and Address

Reference Publication

National aeronautics and S pace Administration

Washin g ton, X 20540 14. Sponsoring Agency Code

NASA Goadard

15. Supplementary Notes

This revision represents the current ERB Archival Tape Specifications.

16. Abstract

ERB MAT Tapes are generated b y the ERB MATGEN software using the IBM 3081

computer s y stem operated b y the Science and applications Computer

Center at Goddard Space Flight Center. Al! MATS are 9-track and MAT

data will be in ascending time order. The gross tape format for

Nimbus Year-1 and Year-2 MATs is different from the format of MATS

starting with Year-3. MATs from the first two y ears will contain one

da y 's worth cf data while all other %!ATs will contain multi p le day's

worth of data stacked onto the tapes.

17. Key Words (Selected by Author(s)) 18. DistriDution Statement

Nimbus-7 ERB Processine

Master Tape Specification

ERB MAT

Unlimited

19. Security Class , f. (of this report) 20. Security Classif. (of this page) 21. No. of Pages 22. Price*

Unclassified Unclassified 55

For saw b y tno Nann n a T ecnnica i .ntormar or Ser y Ce 5or,npr, e 1 a v rginia L 2t 61 GSFC 25-44 (10
TABLE OF CONTENTS

PAGE

ABSTRACT .................................................. 1

I. Requirement Identification .......................... 5

II. Input Data Source ................................... 5

III. Operating Mode ...................................... 5

IV. Gross Output Format ................................. 5

V. Standard Header ..................................... 6

V.1 General ...................................... 7

V.2 Standard Header Record (SHR) ................. 7

V.3 Trailing Documentation File (TDF) ............ 8

V.4 Tape Duplication ............................. 11

V.5 Shipping Letters ............................. 11

VI. Data Record ......................................... 16

V7-A Daily Summary Record ......................... 19

VI-B. Logical Data Record .......................... 23

VI-C. Orbital Summary Record ....................... 39

VII. Calibration Record/File ............................. 52

APPENDIX A. MAT Tape Length Estimate ..................... A-1

i
..

LIST OF TABLES

PAGE

TABLE V-1. NOPS Specification Numbering Code ......... 12

TABLE V-2. Nimbus-7 Project Data Format Codes ........ 14

TABLE VI-1. Instrument Temperatures and Voltage

Monitors .................................. 31

TABLE VI-2. ERB Odd Digital Words Format .............. 35

TABLE VI-3. Spacecraft Status and Events .............. 37

TABLE VI-4. Status Summary ............................ 45

TABLE VI-5. Statistics of Temperatures ................ 47

LIST OF FIGURES

PAGE

FIGURE 1, Gross Tape Format of Year-1 and Year-2

MATS ...................................... 2

FIGURE 2. Gross Tape Format of a Typical Stacked

MAT ....................................... 3

FIGURE 3. Data File Format for all MATs ............. 4

FIGURE V-1. LBCDIC Tape Format ........................ 13

FIGURE VI-1. ERB MAT Physical Record Format ............ 18

FIGURE VI-2. ERB MAT Daily Summary Logical Record

Format .................................... 20

FIGURE VI -3. Logical Data Reccrd Format ................ 24

FIGURE VI-4. Logical Record Format for Orbital

Summary ................................... 40

FIGURE VII-1. ERB MAT Calibration Adjustment Table and

Record Format ............................. 53

ii
f;

n •

Revision D: April 7, 1980 (RDH)

Calibration Adjustment Table (CAT) added.

Revision E: May 13, 1980 (RDH)

Updated CAT specs.

Revision F: July 22, 1981 (LHB)

Changed GHA from degrees to radians (Page 22).

Revision G: November 3, 1981 (SNR)

Tables VI-1, VI-4, and VI-5 added.

Revision H: November 4, 1982 (SNR)

Specified fill values for location errors and solar channels.

Also specified range of GHA values correctly and corrected the

numbering system of SUBFOV's (Page 22).

Revision I: April 17, 1984 (STN)

Added Trailing Documentation File (TOF) description. Also added

description of Stacked (multi-day) MAT which became effective at

start of Year-3.

ii1
a.

n t

ABSTRACT

ERB MAT tapes are generated by the ERB MATGEN software using the

IBM 3081 computer systEm operated by the Science and Applications

Computing Center at Goddard Space Flight Center. All MATS are

9-track and MAT data will be in ascending time order. The gross

tape format for Nimbus Year-1 and Year-2 MATS is different from

the format of MATS starting with Year-3. MATS from the first two

years will contain one day's worth of data while all other MATS

will contain multiple day's worth of data stacked onto the tapes.

Each data file will represent one ERB instrument "ON" day. The

gross tape format for a Year-1 or Year-2 MAT is shown in Figure 1

and is summarized here:

• Tape density is 1600 BPI.

• File 1 contains a standard header record written twice.

• File 2 contains one day's worth of data.

• File.3, the calibration file, is the last file on the tape.

The gross tape format for stacked MATS starting with Year-3 is

shown in Figure 2 and is summarized as follows:

• Tape density is 6250 BPI.

• File 1 contains a standard header record written twice.

• Files 2 to N-2 will be data files that contain one day's

worth of data per file. Normally there will be three data

files stacked or*_o a MAT, but a few tapes have only two data

files.

• File N-1 is the calibration file.

• File N is the Trailing Documentation File (TDF).

An orbit data block is defined as beginning at one descending

node and ending at the following descending node. However, the

data orbit number is incremented at each a scending node such

that each orbit data block will contain data from two data

orbits. Each record within the orbit data block and each orbit

data block from the beginning of the tape to the end of the tape

will contain data in ascending time order. Data will only be

written when ERI3 subsystem is "ON" and no duplicate data will be

written.

Each VIP frame of data occupies one logical data record. There

are up to two logical data records to every physical record.

After all the logical data records have been output, an Orbital

Summary logical record will be written. This record will

indicate the end of an orbit data block. In the last orbit data

block of the day, a Daily Summary logical record will be written

after the Orbital Summary logical record. Figure 3 shows the

data file format for all MATS.

-1- 
z E0zF W ¢ ,^ N

aq v1 w s.

¢G< r U ¢ E— .Q

C

W O :s.. ~

:o

r a^ ^¢ r

c^

z o w^

c. a e W c.

< o

E- w ^.:. ¢z

c o a^

G

r,

r

G C ^

u.;

C

C

F `^

—2—
w o —

^o_

o w

F ..aL

F

C ^

L

w o —

c:.^ as

r v

C C C `—

N

F^1 w r M

C

L Z

—

L'

C—

CO —

w.

CJ G C

C

-3-

F

C

b

a^

x

U

N

r+l

h

u

w

O

r.+

7

E

C

L

,f

,n

0

L.

v

N

z
LOGICAL LOGICAL I DATA DATA R T:ECORD RECORD G

PHYSICAL I PHYSICALPHYSICAL I PHYSICAL E DATA DATA DATA

k

R DATA 0 RECORD GI R RECORD RECORD G RECORD F

ORBITAL DAILY E SUDiT11AR1' SUNDLARY 0 RECORD RECORD F

OR

DAILY ZERO E SUMMARY SUNML,RY 0 RECORD RECORD F

FIGURE 3. Data File Format for all NtAT;

-4-
I. REQUIREMENT IDENTIFICATION

ERB Master Archival Tape (MAT) Specification Number T134081.

II. INPUT DATA SOURCE

UFO-E (T113011) and ERB ILT (T123044).

III. OPERATING MODE

Data is available only when the instrument in "ON". When the ERB

Subsystem is "OFF" , data records covering that time period will

not be available.

When the tape has covered one 24-hour period, the tape will be

terminated and a new tape initiated. The tape sequence number

will be incremented by one and the whole process restarted.

IV. GROSS OUTPUT FORMAT

Refer to Figure 1 and Figure 2.

-5-

LI
V. STANDARD HEADER

All magnetic tapes used as interfaces within NOPS will require

some form of identification. A standardized series of records in

the initial f i l e on each tape will be used and will be called a

NOPS Standard Header File. Some tapes used within a NOPS

facility, which do not pass an interface, will be exempt from

this requirement, although it is a recommended procedure.

The Standard Header will contain the specification number of the

tape generated. The interface specification numbering system is

shown in Table V-1.

Each Standard Header will be written in EBCDIC so that it can be

easily printed for quick identification of the tape. Figure V-1

shows the standard header format using 24-bit words.

Because of the real possibility of an original tape being damaged

in handling (resulting in the loss of many computations) each

processing facility within NOPS will generate duplicate copies of

master tapes. These duplicates will be delivered to IPD for data

product generation or user copy generation and will be indicated

by the character 2 added to the sequence number in the Standard

Header. The original will be indicated by the character 1 and

will be retained in a secure environment at the originating

f ac i 1 i t . When IPD returns Copy No. 2 due to tape errors, a new

copy will be sent to IPD with the copy number incremented by 1

(No. 3).

IPD will include a shipping letter with every tape distributed.

The shipping letter will be pri:,ted directly from the Standard

Header on the tape. In the case of copies made from tapes not

generated in IPD, the original tapes Standard Header will be

copied into a group of 126 characters in each record provided for

that purpose and normally left blank.

-6-
V.1 GENERAL

All computer compatible tapes (CCTs) that are used as interfaces

within HOPS, require some form of identification. This applies

to all CCTs that are currently defined by a NOPS tape

specification, and that are also u3ed for distribution or

archiving purposes.

In addition to defining a "latest" product, data relating to

previous products that went into the making of the "latest"

product provides useful information when system problems occur.

The purpose of this revision to existing NOPS tape specifications

is to define a scheme that allows the recording of 'he genealogy

of a "latest" product, and in general, adheres to existing tape

documentation standards.

In brief, the system is as follows:

1) A documentation file that consists of a string of

physical records follows the data on r,ny tape defined

by a current NODS tape specification. This will be

referred to as a Trailing Documentation File (TDF), and

will be the last file on a tape when it exists.

2) The standard NOPS header file remains as defined, with

minor modifications to the Standard Header record that

ref lect both the existence of a 'rDF z .d adherence to

the IPD standard for sequence numbers.

The follow i ng sections define the NOPS Standard Header records

and file, and the TDF. Data files as currently defined in NOPS

tape specification remain unchanged.

V.2 STANDARD HEADER RECORD (SHR)

The SHR will consist of one physical record that consists of five

logical records of 126 EBCDIC characters. The fist 126

characters will remain as previously defined with the exception

of CHARACTER 1, and those characters that define the sequence

number ( 40-45) . CHARACTER 1 wi 11 contain an asterisk ( *) and

serves to notify all systems that a TDF is likely to follow the

main data files and that the next logical record contains

information relevant to complete identification. As of the

implementation date of this specification, all sequence numbers

will have the following form that is an IPD standard:*

*This does not apply to CZCS data. For CZCS data, Characters 40

to 45 represent a 6-digit sequence number.
CHARACTER 40 The last digit of the year in which the data =

t L. were acquired.

t CHARACTERS 41-43 = Julian day of the year in which the data

were acquired.

CHARACTER 44 = Sequence number for this particular product

(usually a 1) ( eg ., CLDTs will have a 1 and

2, as there are 2 products per day).

CHARACTER 45 The existing hyphen remains unless there is

a remake of the tape for any reason. In

this case, an ascending alpha character will

replace the hyphen, and the most recent

reasons for remake will be recorded in

logical record 4 of the header.

CHARACTER 47 = This will remain as a blank unless it is

naeded to remove ambiguities in CHARACTER

40. This may occur if data are being

acquired on October 24, 1988.

This scheme will uniquely identify any tape when used in

conjunction with the tape specification_ number, the PDFC code,

and the subsystem identification.

The second logical record consisting of 126 characters will

contain information that is required to complete the h'.story of

the product.

CHARACTERS 1-1.2 = Software program name and version number.

CHARACTERS 13-18 = Program documentation reference number, if

it exists.

CHARACTERS 20-126 = User defined comments that may be more

relevant to the user than the preceding

ones.

The NOPS Standard Header File will continue to consist of two

records, the second being a duplicate of the first. Logical

records 3 and 4 may be used for anything desired if no remake

information is required.*

*In the case of CZCS, these logical records are used to define

the genealogy of the image rather than the method of V.3.

-8-
The Standard Header will contain the following:

Two identical records (physical) of 630 characters (8-bits

each) followed by an End-Of-File (EOF).

'the first 126 characters of the first record will consist

of:

"NIMBUS-7 bNOPS b SPEC bNO bT ( 1, 24 CHAR)

XXXXXX ( 6 -Digit Spec Number) ( 25, 30 CHAR)

b SQ b NOb ( 31, 37 CHAR)

AIXXXXX (PDFC & 5-Digit Sequence Number) ( 38, 44 CHAR)

NOTE: If sequence number is zero, tape is not a finished

product (i.e., definitive ephemeris not used,

artificial VIP data, etc.).1

-X (Copy Number 1 or 2) ( 45, 46 CHAR)

(Redo Character)

bYYYY b (4-Character Subsystem ID) ( 47, 52 CHAR)

YYYY (Generation Facility IO) ( 53, 56 CHAR)

bTO bYYYY (4-Character Designation

Facility IO) ( 57, 64 CHAR)

b START b 19XXb ODD b HHMMSS ( 65, 86 CHAR)

(Start year, day of year, hours, minutes

and seconds)

bTO b 19XXb ODD b HHMMSS b ( 87, 106 CHAR)

(End data and time of data)

GEN b 19XX b ODD b HHMMSS b

(101, 126 CHAR)

(Date and time tape was generated)

The second group of 126 characters will contain continuation

documentation of the original 126 characters when required.

1 For CZCS, Characters 40 to 45 are a 6-digit sequence number.

-9- 
The third, fourth, and fifth groups of 126 characters each are

intended for the use of the Subsystem Analyst for further

id entifica tions of their data. They may contain blanks, EBCDIC,

BDC, or binary characters or zeros.

The second record in the file is a duplicate of the first record

of redundancy.

The PDFC codes are as defined in Table V-2.

EXAMPLE: An ER B MATRIX tape covering the month of February, 1979

is generated by SACC and sent to IPD for production of

contour maps on 16mm microfilm. The NOPS Standard

Header file on the tape that IPD receives would contain

two of the followinc, records:

*NIMBUS-7 b NOPS b SPEC bNObT134031bSQbNOb

First day of time period

AA90321-2 bERB bb SACC bTO b IPD b START b1979b

032b000432bTOb1979b059b235742bGENb

1979 b 104 b 094500 b followed by 504 blanks

First day of time period may not be first data day in

the event of mu 1 t i day-stacked products that are based

on an ILT week.

V.3 TRAILING DOCUMENTATION FILE (TDF)

The TDF will consist of all NOPS Standard Header records ( nonduplicated) that relate to products that have gone into the

making of the current product. Documentation records will be

sequenced in accordance with their access; that is, first in is

the first recorded. Every TDF is 630 bytes in length.

The first record of this file will serve to identify the file as

a TDF. This will be accomplished by placing asterisks in

CHARACTERS 1 to 10 followed by a NOPS TRAILER DOCUMENTAPION FILE

FOR TAPE PRODUCT T (SPEC N0. (6 digits)) GENERATED ON DDD HH HM.

The exact spacing of this comment is noncritical as long as it is

less than 116 characters. The second physical record will bE a

repeat of the header f i le NOPS Standard Header record for this

type with the proviso that da`a referring to the end-time are

correct for the data set. Following physical records will be an

accumulation of TDFs of all input tapes. For those products that

require more than one tape, the TDF will appear on the last tape

only as well as the warning asterisk.

-10-
V.4 TAPE DUPLICATION

It has been determined that the duplication of master tapes is

neither time nor cost effective, thus the requirement of

duplication implied in the preceding specification is rescinded.

However, some tapes that require a great deal of effort to

produce in terms of manpower and computer time should be

duplicated.

If a redo is required due to ta p e errors or a'-gorithm changes,

this will be noted both on the CCT (HEADER C-45) and on the

canister.

V.5 SHIPPING LETTERS

IPD will include a shipping letter with every tape distributed.

The shipping letter will be printed directly from the first 126

(or 138) characters of the first physical record of SHF. In the

event of copies made from CCTs that are not generated in IPD, a

new physical record reflecting IPD as the source and the Nimbus

exp erimentor to whom the tape is being sent as the destination,

will be added as the second record of the TDF. All existing

records in the TDF will be pushed down, but none will be lost.

This record should also replace those in the SHF.

-11- 
NOPS SPECIFICATION NUMBERING CODE

TAPES: A six digit number prefixed with a T to denote TAPE

will be used.

T X X X X X X

Y

Tape Description:

1 = 9 Trk 1600 BPI

2 = 9 Trk 800 BPI

3 = 7 Trk 800 BPI

4 = 7 Trk 556 BPI

5 = HDT (IPD)

6 = 9 Trk 6250 BPI

Tape number in sequence for

subsystem (code to be derived)

Destination Facility:

1 = NOCb

 ( Pre-11OPS )

2 = MDHb (NOPS)

3 = SACC

4 = IPDb

5 = LaRC

6 = NCAR

7 = NOAA

8 = OXFD

9 = LANN

Source Facility (Same code as

Destination Facility)

Subsystem

1 = ERBb

2 = SZW4R

3 = THIR

4 = S AM 2

5 = LIMS

6 = SBUv

7 = CZCS

8 = SAMS

9 = ILTb

-12-
ORIGINAL PIRGIZ

OF POOR QUALITY

STANDARD HEADER (PHYSICAL RECORD FORMAT)

MSB LSB

24 22 20 18 16 14 12 10 8 6 4 2 1

8

9

10

13

14

15

16

17

18

19

20

21

22

29

36

42

P,4

126

168

210

FIGURE V-1. EBCDIC Taoe Format

1 *Nimbus - 7 NOPS SPEC NO T b b b b

(24 Characters)

SPEC NO. (6 Digits)

bSQbNOb

(7 Characters)

PDFC CODE (2 Char.)

5 Digit Se -uence No. (5 Characters)

*For CZCS these characters (40-45) are a six digit

sequence I (includes Redo) REDO CHARACTER

1 Char. Type Copy No. Blank Character

(4 Characters) SUBSYSTF-M I.D.

Blank Character SOURCE FACILITY

(4 Characters) Blank Character

(T) Character (0) Character Blank Character

(4 Characters) DESTINATION FACILITY I.D.

(23 Characters)

START YEAR, DAY, HOURS, MINUTES, SECONDS

b START b 19XXb DOD bHHMMSSb

(19 Characters)

END DATE AND TIME OF DATA *Some Facilities may not

TOb 19XXb DOD bHHMMSS b

include end time in header

(20 Characters)

DATE AND TIME TAPE WAS GENERATED

GEN b l9XXb ODD bHHMMSSb

SW Program Name (1-12) Documentation (13-.8) BLANK (126 Characters) Comments 2A

BLANK (126 Characters)

BLANK (126 Characters)

BLANK (126 Characters) _J

I " ^

40 8

C!6

1C33

2316

3024

4C32

5040

-13-
;,G

(9

OF POOR QUALITY

TABLE V-2.

NIMBUS-'7 PROJECT DATA FORMAT CODES, 1 AUG 81

(Rev. From 1 APR 81)

OA'A MOR:2 / VERTIC DAM MO212

SC11SO1 T;PE IO CA IC. CO► ICS ►OF TtR LJCL COLORS SLNS:A TAPE 10 OR 10. COPIES ►OF TtPI LAlEL C S -

W MTR:1 12 72 AA P AA 0 RLD / l 1E0 L;M MTL11-M 42 C: ,C[ ► MAC YELLOW / iE:-

TA:L LS 12 - 4 TAAR D REO 0 ► :IC PA7 :1-C

I

42 07•Nil M A ER Y ELLOW / :-C:4

rlI • Iii L-7 1.S:AC ASAC D RE: / D RLD PROP :LE-1 7 / 11 [C FCC T[LL:W / L P ! wt

SLFOT • 12 C Sb AD SLAG 0 RED If YELLOW PROF:LL-I I 11b CO PR(D YELLOW / P T ► ,

IAT • I% At 2 O MAL l RLD / L PINK RAT. 207 =;III( MACE TE:LOW / : M:`.i

:PAT- 35 C=!!:EF iFEF TELLC+ / C :^A':L

SiPa 1 AC STAG 0 MILD / 0 OAAMGE PAT. 3S C 3V*(C XTEC T[LLCW / .:OW

F•hTA21 - C I^ LC AN 1"RhN MAT• f CS,EM CTEM TELLC: / C2EY

S7MT • ! O I,EI SPII TELLC^. / ! ► C.,N

S[ASarl V Ib Al SL C = SCAT- S 92 514L SCCA YCLLC-' / CCE?r

W-CTlt f - EL WE[ TfLLCt E2 =

:ASEL

117C$ * US UE 4FUE TILI.W E27 LABE.

IITI+ 30 LE IUIC YELLOW C1: LAO LL

TOTALS •277 C 1100 TOTALS -304 pI)a•

011[1 G41 C 14E +13]t -

OTHER (R) 100 C7 S61

SPIV MT1I2-30 12 /A MIA L UP S / TCLL17W SLUT/ PRAIRIA 0T'i pIIFA AAFA 0 CAM 02"'4

MT1t22{0 14 Loll L IRWM If L CAM TOSS TABLES 12 - Fl TAn L Clr / L P17--

14ATMt2-SS 12 K SSIC l 11w / L DIAM P"TAC;IL 52 - Pt We 0 CAN / C ► 1:..

GAP -30• 12 C1j Be WOO l 1AWM / L ?tiff RUT-Spa S2 O- Fo SRFD UET / 0 C"

AIV-LO• 12 C34F 11 TOME l 111M / /LLC (1) OZCWE-S • S2 =uF"E OSFE l URN / L SPWe

AN-SS• 12 CLC If SS/F M TAX / A TAR (1) OZOME-T- 120 COIa-FF OTTT D CAN / 0 ::N

►AL4-10- 60 C3Lesr. ► AIG A TAl / TELLOW OTT• 2 C+L FM ZWW l CAN / L PIIr•

►AMA-LO- 30 =ne IM LCIM R IMWM / TELLOW UT-T• 120 120 FO TAF3 0 CAN IF TELLI"

►ARA- S3• 30 OI:* It SSII A %&a / A uw

TAT* 143 C33;,. sj TAAJ O IM / TILLDII

M.I.-ALL, n C=J" K Dot 0 ILw / L CAN

e ^1

TOTALS •400 =111% TOTALS Ill •C7,,•C 7.+

OT%u 39 - OTHER 016 = 1-

11111 SANK; Silo - IA SOIA D OLAM / 0 CUM RCS (A) CAT3100t 10 111- IT C12 BLUR / ILA

ITT I"S - II STIR 0 ORAN / TnLOW SOL'RCI 4000 . ZA SOLA STANUAD IT ►

CLOT 730 C=11.0 10 CLIO 0 CRAA / 0 

fix

(1) UCST • 100 400 Zl CAL ILLIE / D :710

CS3 all CLIE 0 ORAM / 0 PINK QAT 12 K IC CAZC BLUE / D CPA:

CLT 365 = US:F CL IF P IRAN If CAT{ 100 2W ID CAN ILVIC / TELL:W

iL7•T S2 - LS ILLS l LRAM If L PINK ILT Si LZ 1LLZ 11,A / P TAI'

ILT{ 52 - LC TUC l CRAM / L low JAI CIT "&#C= 10.100 ZI CAZE ILA / 0 ;ar

POWTu 2120 IQ ►DIQ Off =M / OR OLAM 1LT-ll S2 LL IL" It= CIP LAM

(1) CCT-A' 100 IA CCZN IlJ[ / P1L:

(R) LOU# 10 . 7 LOIF L :-2M / :2EY

(1) IP1T/ 100 IG 0► 2L COIL / 11WE

TOTALS (1) IONS =ZSSS TOTALS (1) •C I.6 G40•

/0 Li

(1) #110 -

(l) I•a•V 1= 11.0;1

SAA II PLATO 11 4 0- DA RADA 0 PUP / 0 MAP SA►a MTRIS 036 1- AA PAPA TM-01 / l '1>!

IROF:Lf 12 a- OM pool 0 ►UV If 0 OAAM

ROAM-0 it c- DC MOOC M 'URP / D Cow RATPZ ISO p - MC LAIC TEL-0A / TELLN

/AMAT• O I D- DO Law A PuV / TELIOM

117. l u- LR ILLA Gi[7 rn LaBEI

OC-4+ I - Of WCE D ORAM rn LAMR wR:TN { No woo Qu [1 ► LJIL

I01 + u - La IUSI 0 CLAM CSP LABEL

T27ALS + -fl !7 G - TOTALS i V f;

102-1 IL P 1 l0 ICI -

OTMO 14 ¢ - Cron 0 1 ► MR -

ORIC:MARS COMICS ►;)F

+ T•TLLS t-a,

Il) • TOTALS == 11'V 5 Godr11 27

1 '7TALS G 'A I It I

(t) # TOTALS110 2

11111071141101TOTALS C 211:t j==Ml"11131

Ill CAAA TOTALS OKs.3! C=110,1 1- n

• PLO:,ISS[D IT PLTOCC An C4i:0 IT 1 ►0 ^a.-.;..^i^ Ill -SENSORS W101[ Lf7IS10+tS WERE PACE.

FU=SSED IT P[TDCL AMC ^—== ► ISPO CXA CES TO W[L COLORS PAT BE AAOE DL7[MO1MC

► PROU.USED IT PCTOU AMC CDPILD TO FILA B Y IK ON ATAILJILITT AO O"011T.

* IueAiit O Ct r_Z•ae -.4 SAI W S LT TSGi

VMS LWII,L LMECTS FIRST MM DATA SV WT 121 wT 7I TtwW 3 M4T tt)

Turf t ycHlowLnO F a g CVLLy Ty LaA.TAML CPCaP.I N O, V3:LL •1

PROCESS69 DO L T /n vRiTTTLM 11 tpvL5,T or MgToct.

ORIGIMAL TAPLS wzLL ESi CCRwaoto[DTO AA r- I:VAL.

C[WTLr% v ;od CRnILETiAM or gwPL'-TT C.•I+TLOL C_NsCK.

-14-
NIMBUS-7 PROJECT DATA FORMAT CODES

(Continued)

SENSOR TAPE ID

Location ILT/ERB LA

ILT/SMMR LB

ILT/THIR LI

ILT/SAMII LD

ILT/LIMS LE

ILT/SBUV LF

ILT/C ZCS LZ

ILT/SAMS LH

User UFO/ERB UA

UFO/SMMR UB

UFO/LIMS UE

UFO/SBUV OF

UFO/ILT UL

USER/SENSOR

1st CHARACTER SOURCE/SENSOR 2nd CHARACTER TAPE NUMBER

ERB A

S MMR B

THIR I

SAMII D

LIMS E

SBUV/TOMS F

CZCS Z

SAMS H

ILT L

UFO U

-15-
VI. DATA RECORD

There are three types of logical records in each data file of the

ERB MAT tape. Each f i le will begin with a data logical record

and continue on a one VIP major frame per one data logical record

basis until the end of the orbit data block or ERB S/S power is

turned off, whichever occurs first. After the end of the data

logical records, an orbital summary logical record will be

written followed by more orbit data blocks until a day's worth of

data have been written at which time a daily summary logical

record will be written, the rest of that physical record padded

out with zeroes, if necessary, and the file ended.

The format of the last physical record depends on the number of

logical data records (VIP frames per orbit) in the file.

The orbital summary record contains the peak solar irradiances

for Channels 1 through 10 as well as various quantities computed

for the orbital summary. All physical records, except standard

header records, will consist of 13,464 bytes of information.

Figure VI-1 is the basic physical record format. Formats and

word descriptions for the three logical record formats are

presented in Subsections VI-A, VI-B, and VI-C.

The last sixteen bits of the physical record is the checksum

word. Each 32-bit word output to tape is divided into two 16-bit

words and added with any overflow over sixteen bits added into

the LS B side of the summation word. The final summation word is

placed as the last word of the record as the checksum. An

internal quality control program will check this number by

recomputing what it has read in addition to other quality checks

to ensure a quality output product.

When statistics for data are given, the order will be: minimum,

meant, maximum, standard deviation, and number of samples. When

o nl v four statistics are given, the number of samples are omitted

and the order remains the same.

The order in which data are presented on the MAT tape is given in

the parameter description.

For example, if the description were (5 statistics x 10 channels

x 16 bits = 800 bits) the words would be ordered as follows:

-16-
• WORD

1 Minimum for Channel 1

2 Mean for Channel 1

3 Maximum for Channel 1

4 Standard Deviation of Channel 1

5 Number of Samples for Chanel 1

6 Minimum for Channel 2

7 Mean for Channel 2

10 Number of samples for Channel 2

46 Minimum for Channel 10

50 Standard Deviation for Channel 10

-17-
OF P001: Q I

MSB LSB

32 30 28 26 24 20 18 16 la 12 10 8 6 4 2 1

1

1st LOGICAL RECORD

168

168

2nd LOGICAL RECORD

3364

3365

SPARES (48 BITS)

3366

(CAPl BE DATA RECORD, ORBITAL

SUMMARY RECORD, OR DAILY

SUMMARY RECORD)

53,824

(CAN BE DATA RECORD

ORBITAL SUUMARY RECORD,DAILY

SUMMARY RECORD OR

ZERO PADDED)

107,64

107,71

299236 BIT 17ORD

336632 BIT WORD

448824 BIT CORD

673216 BIT WORD

8976 12 BIT WOM

13464 8 BIT BYTES

FIGURE VI-1. ERB MAT Physical Record Format

-18-
The scale factors indicated on the following word descriptions

are used to retain the desired degree of signficance. For

example, the quantity representing WFOV latitude if floated and

divided by its scale factor of 100, will give the latitude in

degrees.

VI-A. DAILY SUMMARY RECORD

This is the last unpadded logical record in each file. Figure

VI-2 is the basic format for the daily summary record and the

word description for this format is as follows:

( 1) PHYSICAL RECORD NUMBER ( 12 BITS) : This identifies

the physical record within a file.

( 2) RECORD ID (8 BITS): Identifies record type and the

last record written in a file and records in the last

file on the tape. The MSB of the first logical record

of the last physical record will be set to "1", if that

physical record is the last one written in the file.

The second most MSB will be set on all logical records

in the last file on the tape. The record type will use

the six LSB of that byte to identify the type of record

being read: 11 = LOGICAL DATA RECORD, 12 = ORBITAL

SUMMARY RECORD, 13 = DAILY SUMMARY RECORD, 14 =

CALIBRATION ADJUSTMENT TABLE RECORD.

( 3) LOGICAL RECORD NUMBER (8 BITS): This identifies the

logical record within a physical record.

( 4) NUMBER OF ORBITS ( 16 BITS) : The number indicates the

number of orbits contained in this file.

( 5) MONTH - FIRST ORBIT (16 BITS): This word is the

month at the start of the first orbit block in this

file.

( 6) DAY - FIRST ORBIT (16 BITS): This word is the day at

the start of the first orbit block in this file.

( 7) YEAR - FIRST ORBIT (16 BITS): This word is the year

at the start of the first orbit block in the file.

( 8) TIME - FIRST ORBIT ( 16 BITS) : This is the GMT hour

and minutes ( 100 x hour + minute) at the start of the

first orbit block in the file.

( 9) MONTH - LAST ORBIT (16 BITS): This word is the month

at the end of the last orbit block in the file.

(10) DAY - LAST ORBIT (16 BITS): This word is the day

number at the end of the last orbit block in the file.

(11) YEAR - LAST ORBIT ( 16 BITS) : This word is the year

at the end of the last orbit block in the file.

-19-

s
Q, 

7

NS3 LSB

17 10 2R 2h 7/. 77 20 1R l0 16 12 10 8 6 6 ? I

FIIYSICAL PJ:COP.J' NO. 0. ^ SPARES COLT Fcr ,

0

LOCICAL SEC.

NO. OF ORBITS 16) MONTH-FIRST V11IT (16)

DAY- FIRST ORBIT (1G) 'i r-%R-FIRS': 0 0r:IT (15)

CI:L-FIi,SZ ORi1 IT 16) lO::TH-LAST 0?31T (15)

DAY-L'-ST ORBIT (16)

TI,"LE-LAST U;::17 1?,)

YZA!ZZ-LAST ORLiT (16)

SPARES (16)

SENSITIVITY FACTO..".S SOT.AR C:'.S. 1-8 (128 B1T^)

SENSITIVITY FACTORS CH. 9 AND 10 (32)

CALIBFATTON I:;TC",CF?TS C'.. 11 ?_7D 12

CALL-P KATION SLOY:.S CH. 11 AND 12

(32)

32)

SENSITIVITY FACTORS CFI. 13 :iLZU 18 (96 BITS)

CALIBRATION INTERCEPTS CHS. 19-22 (64)

CALIBRATION SLOPES C11S. 19-22 (64)

DATA ORBIT %,M M ERS Or ALL ORDITS IN DAY 15 16 BIT ORBIT `. :OS. 240 BITS)

S' A.'ZL• S ^ 6

SPARES (288 BITS)

STATS FOR NOR`L-%LIZED SOLAR IRF:?DL!%."CLS

(800 BITS)

(320 BITS) SPARES

STATS FOR ELECTRONIC CAIN RAT--OS

(3360 BITS)

STATS FOR CO/NO CO NET COU::T PATIOS

(1120 BITS) i

SPARES (1440 BITS)

OFi SC.TS YOR CHS. 13 At:D 14 (32)

LARTH — SUN DI5TANCL (16 BITS) SPA°^S (i^)

SPARES (128 BITS)

SUM OF THE SQUARES: GO/NO GO NET COUNT RATIOS (448 BITS)

1

2

3

4

5

6

r 7-10

r

11

12

12

14

16

17

18

19

20

21-28

29

30-37

38-62

53 - 72

73-177

178-

212

213-

257

25E

25'.

26

27'

92

41c

5)

6;

lU:'

39U

11°^

19E•'

2.::. 4

664

84

941,-

o`,

FIGURE VI-2. ERB MAT Daily Summary Logical Record Format

- 20-
ORIGINAL PAGE E9

OF POOR OUVITY

MSB LSB

32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 1

STATISTICS FOR SHORTWAVE SCAN (640 BITS)

SUM OF SQUARES: SHORTWAVE CHECK RATIOS 256 BITS)

SPARES: ZERO FILLED (44064 BITS)

1682 32 BIT WORDS 3364 16 BIT WORDS 6728 8 PIT BYTES

297

305

1682

950',

9,92

533".

FIGURE VI -2. ERB MAT Daily Summary Logical Record Format

(Continued)

-21-
(12) TIME - LAST ORBIT (16 BITS): This is the GMT hour

and minute (100 x hour + minute) at the end of the last

orbit block in the file.

(13) SPARES (16 BITS): Zero filled.

(14) SENSITIVITY FACTORS CHANNELS 1 THROUGH 8 (8 CHANNELS

x6 BITS 128 BITS): Sensitivity factors Sor solar

Channels 1 through 8 (with a scale factor of 10 ).

(15) SENSITIVITY FACTORS, CHANNELS 9 AND 10 (2 CHANNELS x

16 BITS - 32 BITS) : Sensitivity factors for solar

Channels 9 and 10 (with a scale factor of 10 ).

(16) CALIBRATION INTERCEPTS CHANNELS 11 AND 12 ( 2

CHANNELS x 16 BITS = 32 BITS): Calibration intercepts

for fixed Earth flux Channels 11 and 12 (with a scale

factor of 100).

(17) CALIBRATION SLOPES CHANNELS 11 AND 12 (2 CHANNELS x

IT BITS - 32 BITS): Calibration slopes for fixed Ea5th

f lux Channels 11 and 12 (with a scale factor of 10 ) .

(18) SENSITIVITY FACTORS CHANNELS 13 THROUGH 18 (6

CHANNELS x 16 BITS = 96 BITS) : Sensitivity factors for

fixed Earth flux Channels 13 and 14 and shortwave

scanning C)annels 15, 16, 17, and 18 (with a scale

factor of 10 ) .

t19) CALIBRATION INTERCEPTS, CHANNELS 19 THROUGH 22(4

CHANNELS x 16 BITS - 64 BITS): Calibration intercepts

for longwave scaar!:.--T Channels 19, 20, 21, and 22 (with

a scale factor of 10v).

(20) CALIBRATION SLOPES, CHANNELS 19 THROUGH 22 (4

CHANNELS x 16 BITS = 64 BITS) : Calibration slopes for

longwave scanniv Channels 19, 20, 21, and 22 (with a

scale factor of 10 ).

(21) DATA ORBIT NUMBERS (l5 ORBITS x 16 BITS = 240 BITS):

Data orbit numbers at the start of all orbit blocks in

this file including up to a maximum of 15 orbit

numbers.

(22) SPARES (304 BITS): Zero filled.

(23) STATISTICS FOR SOLAR IRRADIANCE (5 STATISTICS x 10

CHANNELS x 16 BITS = 800 BITS): Statistics which

include the minimum, mean, maximum, and standard

deviation values plus the number of samples for

normalized solar irradiance (scale factor for Channels

1 through 5 and 10 is 10, scale factor for Channels 6

through 9 is 100). The number of samples is not

scaled.

-22-

------------ 
(24) SPARES (320 BITS): Zero filled.

25) STATISTICS FOR ET.ECTP,ONIC GAIN RATIOS (5 STATISTICS x

3 STEPS x 14 CHANNELS x 16 BITS = 3360 BITS) : The

statistics for electronic gain ratios have a scale

factor of 1000, except for the number of samples which

is unscaled.

(26) STATISTICS FOR GO/NO GO NET COUNT RATIOS ( 5

STATISTICS x 14 CHANNELS x 16 BITS = 1120 BITS) : The

statistics for the GO/NO GO net count ratios have s

scale factor of 1000, except for the number of samples

which is unscaled.

(27) SPARES (1440 BITS): Zero filled.

( 28) OFFSET FOR CHANNELS 13 14 (2 CHANNELS x 16 BITS = 32

BITS): The offset in counts for Channels 13 and 14.

(29) EARTH-SUN DISTANCE (16 BITS) : The Earth-Sun Distance

in astronomical units (with a scale factor of 10 ).

(30) SPARES (144 BITS): Zero filled.

( 31) SUM OF THE SQUARES: GO/NO GO NET COUNT RATIOS (14

CHANNELS x 32 BITS = 448 BITS) : The sum of the squares

for the GO/NO GO net count ratios for Channels 1 to 14,

scaled by 100.

(32) STATISTICS FOR SHORTWAVE SCANS (5 STATISTICS x 4

SHORTWAVE CHANNELS x 2 SOLAR CHANNELS x 16 BITS = 640

BITS) : These statistics are the count ratios during

shortwave check for the shortwave scan channels (witi: a

scale factor of 1000, except for number of samples).

(33) SUM OF THE SQUARES: SHORTWAVE CHECK RATIOS (4

SHORTWAVE CHANNELS x 2 SOT,AR CHANNELS x 32 BITS = 256

BITS): The sum of the squares for the shortwave check

ratios scaled by 1000.

( 34) SPARES (44,064 BITS) : These spare bits are used to

frill out to logical record size and will be zero

filled.

VI-B. LOGICAL DATA RECORD

Each logical data record contains one VIP major frame of ERB

data. The F ormat for this record is shown in Figure VI-3 with

word descri^.ions as follows:

( 1) PHYSICAL RECORD NUMBER (12 BITS) This word

identifies the physical record number within a data

file.

-23-
MSB

WORD 32

1

2

3

4

LSB

I BITS

4r) - 12 SITS 4SPARES

FILE

CON .

6 BI-,'z

RECORD I.D.

8 BITS

LOCICAL z. CORD

YEAR (16) DAY OF YEAR (16)

HOUR MINUT_ ) *lLLJri0tof

ORBIT N ) SPARE

TIME FROM ERB TURN ON (32)

POSITIONS OF THE SPACECRAFT (384)

VELOCITIES OF THE SPACECRAFT (384)

32

64

oc

1:8

16C

54:

928

992

1056

1120

1184

1312

13:

13-6

1408

147-

1504

15'_6

1568

163_

2144

240r,

2'083=

3926-

3952..

.400r

4528:

SUBSATELLITE LATITUDES (64)

SUBSATELLITE LONGITUDES (64)

LATITUDES OF THE WIDE FIELDS OF VIEW (64)

LONGITUDES OF THE WIDE FIELDS OF VIEW (64)

SPACECRAFT ALTITUDES (128)

SPACECRAFT PITCH ANGLE (16) ISPACECFAFT ROLL A:7GLE (16)

SPACECRAFT YAW ANGLE (16) GM A ENCODER 5 0::7 7 0.1,' 1

SOLAR ZE4IIH A:7 i

SOLAR RIGHT ASCENSIONS (64)

5

17

29

31

33

35

37

41

42

43

44

46

47

48

49

51

67

75

651

1227

1235

1363

1375

1415

SPAxES 16 5^ACES (16; I

DSAS BETA ANGLE (16) IDSAS ALPHA ANG;.E (16)

GREENWICH HOUR ANGLES (64)

32 ALPHA ENCODER POSITIONS 0-26- (512)

16 BETA ENCODER POSITIONS 0-885 (256)

LATITUDES FOR 1152 SUB FOVn FOR CHANNELS 15-22 (NFOV) (1343;1

LONGITUDES FOR 1152 SUBFOVs FOR CAA:7NELS 15-22 (SFO':) (18432)

CHANT:EL 11-14 (WFOV) 1RRADIANCES (256)

CHA.NSEL 15-22 (5FOV) IRRADIA::CES (4096)

INSTRUMH ,'T TE`TERAT_'RES (PLATINUM) (38-)

INSTRUMENT TEMPERATURES (THERMISTOR) (1280)

0);V^7r?L , .

SOLAR CHAN`;ELS DETECTOR OUTPUT (2560)

1495 4784,

FIGURE VI-3. Logical Data Record Format

-24-
ORIGINAL PADS T

OF POOR QUALI Y

MSB LSB

WORD 32 1 BITS

EARTH FLUX CHANNELS DETECTOR OUTPUT (256)

SCANNING CHANNELS DETECTOR OUTPUT (4096)

ERB DIGITAL A WORDS (256)

INSTRUMENT STATUS (16) SCAN INFO WORD (16)

SPACECRAFT STATUS BITS (192)

SOLAR CHANNEL FLAGS (160)

EARTH FLUX CHANNEL FLAGS 

77-7

SPARES (16)

SCANNING CHANNEL FLAGS (256)

ALPRA ANGLE FLAGS (32)

ETA ANGLE FLAGS (16) ISPARtS (16)

PLATINUM TEMPERATURE MONITOR FLAGS (48)

TERMtISTOR TEMPERATURE MONITOR FLAGS (80)

REFERr,

 M TIME (32) 

SPAS ;

1503

1631

1639

1640

1646

1651

1652

1660

1661

1662

1666

1682

48096

52.92

524.:8

524-80

52672

52832

52454

5312;

53152

53184

53312

538:4

1682 32-BIT WORDS

3364 16-BIT 14ORDS

6728 S-BST BYTES

FIGURE VI-3. Logical Data Record Format

(Continued)

-25-
.-

( 2) RECORD ID ( 8 BITS) : Identifies record type and the

last record written in a file and records in the last

file on the tape. The MSB of the first logical record

of the last physical record will be set to "l", if that

physical record is the last one written in the file.

The second most MSB will be set on all logical records

in the last file on the tape. The record type will use

the six LSB of that byte to identify the type of record

being read: 11 - LOGICAL DATA RECORD, 12 = ORBITAL

SUMMARY RECORD, 13 - DAILY SUMMARY RECORD, 14 =

CALIBRATION ADJUSTMENT TABLE RECORD.

3) LOGICAL RECORD NUMBER ( 8 BITS) : This identifies the

logical record within a physical record.

( 4) YEAR ( 16 BITS) : The two least significant numbers of

the calendar year.

( 5) DAY OF YEAR (16 BITS): The day of the year (1 to 365

or 366).

( 6) HOUR/MINUTE (16 BITS): This word is the GMT hour and

minute ( 100 x Hour + Minute) of the start of data in

this record.

( 7) GMT SECONDS ( 16 BITS) : This word is the GMT seconds

(0 through 59) of the start of data in this record.

( 8) ORBIT NUMBER ( 16 BITS) : The orbit data block number

associated with this data.

( 9) SPARE (16 BITS): Not zero filled. May contain

Channel 12 shutter temperature.

( 10) TIME FROM ERB TURN ON ( 32 BITS) : Time, in seconds,

from the ERB instrument being turned on, to the

beginning of this major frame.

(11) POSITIONS OF THE SPACECRAFT ( 3 COORDINATES x 4 TIMES

x 32 BITS = 384 BITS) : The Earth-centered inertial

cartesian position of the spacecraft at 2, 6, 10, and

14 seconds from the ^eginning of the major frame in

kilometers scaled by 10 .

( 12 ) VELOCITIES OF THE SPACECRAFT ( 3 COORDINATES x 4 TIMES

x 32 BITS = 384 BITS) : The Earth-centered inertial

cartesian velocity of the spacecraft at 2, 6, 10, and

14 seconds from the beginning if the major frame, in

kilometers per second scaled by 10 .

(13) SUBSATELLITE LATITUDES (4 LAT

BITS): The geodetic subsatellite

South to +90 degrees North) at 2,

from the beginning of the major

A fill value of 22222 is used

available.

CTU DES x 16 BITS = 64

latitude (-90 degrees

6, 10, and 14 seconds

frame, scaled by 100.

if no information is

-26-

(
( 14) SUBSATELLITE LONGITUDES (4 LONGITUDES x 15 BITS = 64

BITS): The geodetic subsatellite longitude (-180

degrees West to +180 degrees East) at 2, 6, 10, and 14

seconds from the beginning of the major frame, scaled

by 100. A f ill value of 22222 is used if no

information is available.

( 15) LATITUDES OF THE WIDE FIELD OF VIEW (4 LATITUDES x 16

BITS = 64 BITS) : The geodetic latitudes (-90 degrees

South to +90 degrees North) for the Wide Field of View

at 2, 6, 10, and 14 seconds from the beginning of the

major frame, scaled by 100. A fill value of 22222 is

used if no information is available.

( 16) LONGITUDES OF THE WIDE FIELD OF VIEW (4 LONGITUDES x

16 BITS - 64 BITS): The geodetic longitude (-180

degrees West to +180 degrees East) at 2, 6, 10, and 14

seconds from the beginning of the major frame, scaled

by 100. A fill value of 22222 is used if no

information is available.

(17) SPACECRAFT ALTITUDES (4 ALTITUDES x 32 BITS =-128

BITS) : The spacecraft altitude in kilometers at 2, 6,

10, and 14 seconds from the beginning of the major

frame, scaled by 10 .

(18) SPACECRAFT PITCH ANGLE (16 BITS): The spacecraft

pitch angle in degrees at the middle of this major

frame (with a scale factor of 100).

(19) SPACECRAFT ROLL ANGLE (16 BITS) : The spacecraft roll

angle in degrees at the middle of this major frame

(with a scale factor of 100).

(20) SPACECRAFT YAW ANGLE (16 BITS) : The spacecraft yaw

angle in degrees at the middle of this major frame

(with a scale factor of 100).

(21) GAMMA ENCODER POSITION (16 BITS) : Identif ies the

solar channel subassembly position at the middle of

this major frame (-20 to +20).

( 22) SOLAR ZENITH ANGLE (16 BITS) : This word is the solar

zenith angle in degrees at the subsatellite point (0

degree - 180 degrees) with a scale factor of 10. A

fill value of 22222 is used if no information is

available.

(23) SOLAR AZIMUTH ANGLE (16 BITS): This word is the

solar azimuth angle at the subsatellite point relative

to the subsatellite TRACK on the Earth in degrees ( 0

degree - 360 degrees) with a scale factor of 10. A

fill value of 22222 is used if no information is

available.

-27-
-28-

(24) SOLAR RIGHT ASCENSION (4 RIGHT ASCENSIONS x 16 BITS =

-180 degrees to +180 degrees, 64 BITS): Right

ascension of the Sun in degrees at 2, 6, 10, and 14

seconds from the beginning of the major frame, scaled

by 100. From ERB-ILT Ephemeris data.

(25) SOLAR DECLINATION ( 16 BITS) : Declination of the Sun

in degrees T-90 degrees to +90 degrees) from the

ERB-ILT Ephemeris data (scaled by a factor of 100).

(26) SPARES (16 BITS): Zero filled spare bits.

(27) SPARES (16 BITS): Zero filled spare bits.

(28) SPARES (16 BITS): Zero filled sure bits.

(29) DSAS ALPHA ANGLE ( 16 BITS) : The DSAS Alpha Angle

(elevation of Sun relative to S/C axes) from the

ERB-ILT. Value is in degrees ( -180 degrees to +180

degrees) scaled by 10. If no DSAS data is available,

the value will be set to -999.9 x 10.

(30) DSAS BETA ANGLE (16 BITS): The DSAS beta angle

(azimuth of the sun relative to S/C axes) from the

ERB-ILT. Value is in degrees ( -180 degrees to +180

degrees) scaled by 10. If no DSAS data is available,

the value will be set to -999.9 x 10.

(31) GREENWICH HOUR ANGLE ( 4 ANGLES x 16 BITS = 64 BITS) :

The angle between the x-axis in the Earth-centered

inertial coordinate system and the x-axis in the Earthcentered fixed coordinate system (Greenwich Meridian)

at 2, 6, 10, and 14 seconds from the beginning of the

major frame. The values are in radians (0 to 2 )

scaled by 100. Negative when Greenwich Meridian West

of vernal equinox.

( 32) ALPHA ENCODE POSITIONS ( 32 POSITIONS x 16 BITS = 512

BITS) : Contains 32 alpha angle positions from the

scanhead encoder (0-264).

(33) BETA ENCODER POSITIONS ( 16 POSITIONS x 16 BITS = 256

BITS) : Contains 16 beta angle positions (0-885) from

the gimbal encoder.

(34) LATITUDE FOR SCANNING CHANNELS SUB FOV'S (4 CHANNELS

x 9 SU BFOV x 32 FOV x 16 BITS = 18,432 BITS) : Each of

the 4 scanning channel telescopes has 32 FOVs per VIP

frame. Each FOV is subdivided into 9 sub FOVs, each of

which is located and assigned geodetic latitude and

longitude corresponding to the center of the sub TOV.

The sub FOVs are numbered as follows:
9 8 7

6 5 4

3 2 1 SCAN DIRECTION

ERB FOV

The values of the latitudes are in degrees scaled by

100. When the NFOV telescopes do not see the Earth,

the latitude and longitude are given a value of 22222.

The latitude words are ordered first by FOV, then by

sub FOV, and finally by scanning channel group

(telescope) as shown below:

WORD NO. FOV SUB FOV CHANNEL GROUP

1 1 1 15,19

2 1 1 16,20

3 1 1 17,21

4 1 1 18,22

5 1 2 15,19

36 1 9 18,22

37 2 1 15,19

1152 32 9 18,22

(35) LONGITUDES FOR SCANNING CHANNELS SUB FOV' S ( 4

CHANNELS x 9 SUBFOVS x 32 FOVS x 16 BITS = 18432 BITS):

Each of the four scanning channel telescopes has 32

FOVs per VIP frame. Each FOV is subdivided into nine

sub FOVs, each of which is located and assigned a

geodetic latitude and longitude corresponding to the

center of the sub FOV. The longitude words are ordered

as shown in Item 34. The longitude values are in

degrees scaled by 100. A fill value of 22222 is used

if no information is available.

( 36) IRRADIANCES FOR CHANNELS 11 THRU 14 ( 4 IRRADIANCES x

4 CHANNELS x 16 BITS - 256 BITS) : Four irradiances

each for Channels 11 thru 12 (0-12000), four

irradiances for Channel 13 (0-9000), and four

irradiances for Channel 14 (0-5000), all with a scale

factor of 10.

-29-
( 37 ) IRRADIANCES FOR CHANNELS 15 THRU 22 ( 32 IRRADIANCES x

8 CHANNELS x 16 BITS = 4096 BITS): Thirty-two

irradiances each for Channels 15 thru 18 ( 0 -3000) and

thirty-two irradiances each for Channels 19 thru 22

(0-1950), all with a scale factor of 10.

( 38) INSTRUMENT TEMPERATURES (PLATINUM) ( 24 TEMPERATURES x

16 BITS = 384 BITS): Instrument temperatures in

degrees Celsius from platinum thermometers (with a

scale factor of 10).

(39) INSTRUMENT TEMPERATURE AND VOLTAGE MONITORS ( 80 x 16

BITS = 1280 BITS): Instrument temperatures in degrees

Celsius from thermistors and logic level voltage in

volts (all except the last quantity, which has a

scaling factor of 100, are with a scale factor of 10) .

See Table VI-1 for description. For Channels 1 thru

10, thermopile base temperatures a fill value of 29

degrees Celsius is used if temperatures are out of

range.

(40) SOLAR CHANNELS DETECTOR OUTPUT (10 CHANNELS x 16

SECONDS x 16 BITS - 2560 BITS) : This is the solar

channels detector output in counts.

(41) EARTH FLUX CHANNELS DETECTOR OUTPUT ( 4 CHANNELS x 4

SECONDS x 16 BITS = 256 BITS): This is the Earth flux

channels detector output in counts).

(42) SCANNING CHANNELS DETECTOR OUTPUT (8 CHANNELS x 32

HALF SECONDS x 6 BITS 4096 BITS) The detector

output in counts of the scanning channels.

(43) "DIGITAL" WORDS ( 16 DIGITAL WORDS x 16 BITS -256

BITS) Digital words. The even 8 digital words

are:

COL ROW

+ PTM Excitation Voltage BB 24 06

- PTM Excitation Voltage BB 24 16

+ PTM Excitation Voltage Scan Channel 24 26

- PTM excitation Voltage Scan Channel 24 36

+ PTM Excitation Voltage Earth Channel 24 46

- PTM Excitation Voltage Earth Channel 24 56

+ 15 Volt Monitor 24 66

- 15 Volt Monitor 24 76

The odd eight digital words are also located in Column

24. These eight words are status words and each bit of

each word indicates unique instrument status. The

status for each of these bits is defined in Table VI-2.

-30-
TABLE VI-1.

Instrument Temperatures and Voltage Monitors

Number Description

1 CH 11 Shutter Temperature

2 CH 12 Shutter Temperature

3 CH 19 Telescope Port Temperature

4 CH 20 Telescope Port Temperature

5 CH 21 Telescope Port Temperature

6 CH 22 Telescope Port Temperature

7 CH 9 Module Temperature

8 CH 10 Module Temperature

9 CH 13 Module Temperature

10 CH 14 Module Temperature

11

r CH 1 Thermopile Base Temperature

12 CH 2 Thermopile Base Temperature

13 CH 3 Thermopile Base Temperature

14 CH 4 Thermopile Base Temperature

15 CH 5 Thermopile Base Temperature

16 CH 6 Thermopile Base Temperature

17 CH 7 Thermopile Base Temperature

18 CH 8 Thermopile Base Temperature

19 CH 9 Thermopile Base Temperature

20 CH 10 Thermopile Base Temperature

21 CH 11 Shutter Temperature

22 CH 12 Shutter Temperature

23 CH 19 Telescope Port Temperature

24 CH 20 Telescope Port Temperature

25 CH 21 Telescope Port Temperature

26 CH 22 Telescope Port Temperature

27 CH 19 Telescope Baffle Temperature

28 CH 20 Telescope Baffle Temperature

29 Shorted Out

30 Shorted Out

31 CH 1 Module Temperature

32 CH 2 Module Temrsratore

-31-

i. iii /s ..^ w -

_ _ 
TABLE VI-1.

Instrument Temperatures and Voltage Monitors

(Continued)

Description

CH 3 Module Temperature

CH 6 Module Temperature

Solar Channel Assembly Casting 'Pop 'temperature

Solar Channel Assembly Casting Bottom Temperature

Solar Channel Assembly Shield Attach Point

Solar Channel Assembly Amplifier Heat Sink

Earth Flux Channel Assembly, Front

Earth Flux Channel Assembly, Back

CH 11 Shutter Temperature

CH 12 Shutter Temperature

CH 19 Telescope Port Temperature

CH 20 Telescope Port Temperature

CH 21 Telescope Port Temperature

CH 22 Telescope Port Temperature

CH 9 Nodule Temperature

CH 10 Module Temperature

CH 13 Module Temperature

CH 14 Module Temperature

Earth FLux Channel Assembly Heat Sink

Main Frame Mounting Tab, Front

Main Frame Mounting Tab, Back

3 Gimbal Bearing and Gear Box Temperature

3 Gimbal Motor Temperature

Solar Channel Assembly Drive Motor Temperature

SWSC Det. Temperature

a Sweep Gear Box and Motor Temperature

Shorted Out

Po^jL Amplifier Synch Demod Area Temperature

CH 11 Shutter Temperature

CH 12 Shutter Temperature

CH 19 Telescope Port Temperature

-32-

Number

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63
TABLE VI-1.

Instrument Temperatures and Voltage Monitors

(Continued)

Number Description

64 CH 20 Telescope Port Temperature

65 CH 21 Telescope Port Temperature

66 CH 22 Telescope Port Temperature

67 CH 19 Telescope Baffle Temperature

68 CH 20 Telescope Baffle Temperature

69 Shorted Out

70 Shorted Out

71 Power Supply Area Temperature

72 A/D Area Temperature

73 Heat Radiator Temperature

74 Remote Scan Mech. (a) Axis bearing Temperature

75 CH 12 FOV Stop Temperature

76 CH 11 Thermopile Base Temperature

77 CH 12 Thermopile Base Temperature

78 CH 13 Thermopile Base Temperature

79 CH 1^ Thermopile Base Temperature

80 + 5 V. Logic Level

-33-
(44) INSTRUMENT STATUS WORD (16 BITS): This status word

indicates the status of the scanhead, the shutters for

Channels 11 and 12, the Channel 12 Field Of View, the

electronici calibration and the GO /NO GO heater. The

status is interpreted as follows:

Units Decimal Digit (Indicates Position of Scanhead)

0 - Scan Mcde 3 - "W Check Position

1 - Nadir Position 4 - SW Check Position

2 - Space Position 9 - Transition Mode

Tens Decimal Digit (Indicates Status of Shutters,

Channels 11 an )

0 - Reference Channels CLOSED, Channel 12 OPEN

1 - Reference Channels CLOSED, Channel 12 CLOSED

2 - Reference Channels OPEN, Channel 12 OPEN

3 - Reference Channels OPEN, Channel 12 CLOSED

5 - Status Unknown

Hundreds Decimal Digit ( Indicates Status of Channel

FOV).

0 - Channel 12 FOV Wide

1 - Channel 1.2 FOV Narrow

9 - Status Unknown

Thousands Decimal Digit (Indicates Status of E1. Cal.

and GO/NO GO Heater)

0 - GO/NO GO Heater OFF, E1. Cal. OFF

1 - GO/NO GO Heater OFF, F1. Cal. CA

2 - GO/NO GO Heater ON, E1. Cal. OFF

3 GO/NO GO Heater ON, E1. Cal. ON

9 Status Unknown

(45) SCAN INFORMATION WORD ( 16 BITS) : This word provides

scan information such as scan mode, position, and

errors. If the instrument is not scanning, these bits

will be zero.

Units Decimal Digit Major Frame Count (1-7)

Tens Decimal Digit Scan Mode (1-5)

Hundreds Decimal Digit 0 - Mode 4 Portion of Mode 5

1 - Mode 3 Portion of mode 5

Thousands Decimal Digit: 0 - No Scan Errors

1 - Alpha Scan Errors

2 - Beta Scan Errors

3 - Alpha and Beta Errors

-34-
ORIGINAL PAGE iS

OF POOR .QUALITY

TABLE VI-2.

ERB Odd Digital Word Format (VIP Column 24)

^~ Ao

o

^^ ~do o'` -z

ac -

0u o 0

^< p0 "'i s N

uu

y.. NV

V

y

v d

I

d If

d h^ I

J^ V

O

C W O

O ^ ^r N J

O

Z S

~

al «

N K a O< - u C i O L N

u I N W u d N tS .30

u u ^

n

W

s u o

ia

o r

K N u b O L7 V y L 1. to

N U V N 1 `I = N V C% Q N G

Y^ I ^^ O V^ V

c an

64 J 3 Ud N O .iK

V L V M

i?

r Y S Y Z .rn i W s i V 5 u .+ r^ ►^ Y

a

' L..

SK

K> J

s N N .. u

W

u

vt

K 0

< N : c.

tj

op < 'L

ZW I^ Su Y I L Z

1. a

W Z-3 w L' J

-

L.

N N J t5V

i tSV

N iCW ^

.^ u

l:

z o.a

2

z

V NO

S

u V

u

> a

n

^

< ..

v^'^j ^^a NW

- ^ o

u .. a r.

H = a r I r p

V

:J _ O

J; a

< .r V tn u_

F .^_7 O W {..7 i

Z

N W (,j CJ

i

 W /^

I"1

= s ^ L I ^Q ...i eV -

N b ..1 V W F

u ^

I

..

.y N N P a1 ^ 'r

I

-

Sd:iVKf: U UaL;M - 1SL171U

-35-
(46) SPACECRAFT STATUS BITS (192 BITS): 192 Individual

bits. Where digital B functions are used for status,

all samples will be used. Events will use 3 bits (0-7)

each time it is sampled, which is twice per major

frame. The status and events are from the ERB-ILT and

are given in the proper order in Table VI-3.

(47) SOLAR CHANNEL FLAGS ( 10 CHANNELS x 16 SECONDS x 1 BIT

= 160 BITS): 1-Bit flags indicating that the data was

(BIT-1 ) , or was not ( BIT-0 ) taken in a data quality

loss interval. In addition, these bits are set to 1

when locations are filled.

(48) EARTH FLUX CHANNEL FLAGS ( 4 CHANNELS x 4 VALUES x 1

BIT = 16 BITS): 1-Bit flags indicating that the data

was (BIT=1), or was not (BIT=0) taken in a data quality

loss interval. In addition, these bits are set to 1

when locations are filled.

(49) SPARES (16 BITS): Zero filled.

(50) SCANNING CHANNEL FLAGS ( 8 CHANNELS x 32 HALF SECONDS

x 1 BIT = 256 BITS): 1-Bit flags indicating that the

data was ( BIT=1 ) , or was not (BIT-0) taken in a data

quality loss interval. In addition, these bits are set

to 1 when locations are filled.

(51) ALPHA ANGLE FLAGS (32 HALF SECONDS x 1 BIT = 32

BITS): 1-Bit flags indicating that the data was

( BIT=1) , or was not (BIT-0) taken in a data quality

loss interval. In addition, these bits are set to 1

when locations are filled.

(52) BETA ANGLE FLAGS (16 SECONDS x 1 BIT - 16 BITS):

1-Bit flags indicating that tine data was (BIT=1), or

was not (BIT=0), taken in a data quality loss interval.

In addition, these bits are set to 1 when locations are

filled.

(53) SPARES (16 BITS) - Zero filled.

(54) PLATINUM TEMPERATURE MONITOR FLAGS ( 48 MONITORS x 1

BIT - 48 BITS): 1-Bit flags indicating that the data

was (BIT=1), or was not (BIT=0) taken in a data quality

loss interval. In addition, these bits are set to 1

when locations are filled.

( 55) THERMI STOR TEMPERATURE MONITOR FLAGS ( 80 MONITORS x 1

BIT - 80 BITS): 1-Bit flags indicating that the data

was (BIT=1), or was not (BIT=0) taken in a data quality

loss interval. In addition, these bits are set to 1

when locations are filled.

-36-
ORIGINAL PAGE 19

TABLE VI-3. OF POOR QJALMI

Spacecraft Status and Events

No. Descri Lion BIT STATE IFUNC LVENT Nos COL/PO'.

1 SATELLITE DAY/NIGHT DAY-KNIGHT-0 EV-17

2 TLM PWR ON/OFF ON/OFF FN-6601 6/8

3 DSAS PWR ON /OFF ON/OFF FN-16001 6/6

4 IR ZIP/DIP TO TR1 ZIP/DIP FN -22008 6/16

S IR ZIP/DIP TO TR2 ZIP/DIP FN-22009 6/17

6 IR ZIP/DIP TO TR3 ZIP/DIP FN-22010 6/26

7 TR1 POWER ON /OFF ON/OFF FN-18006 71/4

8 TR2 POWER ON/OFF ON/OFF FN-18036 71/4

9 TR3 POWER ON /OFF ON/OFF FN-18056 71/3

30 XPONDER A/B POWER 0-Both OFF/1-A ON

2-B ON/3-Both ON (SPECIAL EVr-a,

11 XPONDER RANGING A ON /OFF FN-19002 6/2

12 B ON/OFF F71-19006 6/6

13 T B XMTR A PWR ON/OFF FN-7160 6/8

14 W B X)ATR B PWR ON /OFF FN-7260 6/9

V B X11TR A/B SELECTED A/B FN -7165 6/2

16 CZCS CHANNEL 1 PIR ON/OFF FII-8001 6/1

17 CZCS » 2 » ON /OFF FN-8002 6/2

18 ^ » 3 » ON /07F FN-800' 6/3

19 » ^ 4 ^ ON/OFF FN-8004 6/4

20 » ^ 5 » ON/OFF FN-8005 6/5

21 » 8 ^ ON/OFF FN-8006 6/6

22 CZCS ELECT. PWR ON/OFF FN-8007 6/7

23 CZCS SCAN DRIVE ON/OFF FN-8008 6/10

24 CZCS CAL LAMP STATUS 0-Both OF?/1-1 ON

2-2 ON/3-UTIZ (SPECIAL EVEN

25 CZCS RECORDING CZCS DATA 1=YES/0-NO SPECIAL EVENT

26 REAL TIAll DATA COLLECTION 1-YES/0-NO SPECIAL EVENT

27 THIR STATUS 0-OFF/1-RAD ON

2-ALL ONJZ 3-FAIL Ev-88

28 LUIS ELECT ON/OFF FN-11001 6/16

29 LIMS ADAPT SCAN ON/OFF FN -11004 6/19

30 LIMS ACQ SCAN ON/OFF FN-11005 6/20

-37-
TABLE VI-3. Spacecraft Status and Events

(Continued)

(I)/(0)

BIT STATE FUNC/EVENT No

YES/NO FN-11006

YES /NO FN-11007

ON/OFF FN-12001

ON/OFF FN-12002

ON/OFF FN-12003

ON/OFF FN-13001

ENA/DIS FN-13002

SET/RESET FN-13005

SET/RESET FN-13006

SET/RESET FN-13007

SET/ RESET FN-13008

ENA/DIS FN-13009

ON/OFF FN-13020

the 4th LSB1 Of

the 3ri LSB o1.12 SPECIAL EVF•

the 2nd LSB Row 0

the 4th LSB

Of

the 3rd LSB o1.12 SPECIAL E'M

the 2nd LSB Row 40

R-/AOV.l

6/21

6/22

6/1

6/2

6/3

6/1

6/2

6/5

6/7

6/14

6/15

6/16

6":2

Uescri ptlon

31 LIMS CALIS SPACE

32 LIMS SOURCE CALIBRATE

33 SAWS POWER

34 SAMS LIMB SCAN DRIVE

35 SAMS AZIMUTH SCAN DRIVE

36 SBUV /TOMS MASTER POWER

37 SBUV PBR ENABLE

38 SBUV STEP SCAN

39 SBOV CONTINUOUS SCAN

40 SBUV CAT. CAL

43 SBUV/Tomb MAVSLE.NGTII CAL

41 TOMS PWR ENABLE

43 SBUV/TOMS ELECT CAL

44 SBUV/TORS FRAM COUNTER

(First in Time)

45 (Second in Time)

46 ERB ELECT

4: LM SCAN

48 ERB STEPPER DRIVER

49 ERB CHOPPER OPERATING

30 SMMR DATA SYSTEM

51 SMMR CHANNEL 1 PAR

52 •. „ 2

53 n 3

54 .. 4

55 5

56 SM.MR SCAN POTTER ON/OFF

57 L-MOVER OOTPUT A/B

56 SAM II POTTER

59 SAM II STANDBY

60 SAM II SCAN MODE

61 SAM II SLEW MODE

62 SAM II GIMBAL MODE

63 SBUV/TOMS DATA TAKING MODE

64 SPARE

• Indicates frame status for

ON/OFF

ON/OFF

OFF/NO

YES/NO

ON/OFF

ION/OFF

ON /OFF

ON/OFF

ON /OFF

ON/OFF

ON/OFF

A/B

ON/OFF

ON/OFF

ON/OFF

ON/OFF

ON/OFF

YES/NO

:he previous VIP m

FN-14001

FN-14002

FN-14011

FN-14016

FN-15001

FN-15002

FN-15003

FN-15004

FN-15005

FN-15006

FN-15007

FN-15009

FN-17001

FN-17015

FN-17014

FN-17013

FN-17012

SPECIAL EVENT

ajor Lrame.

6/1

6/2

6/21

6/23

6/3

6/4

6/7

6/17

6/18

6/19

6/22

6/26

6/1

6/26

6/22

6/21

6/20

-38-
UXIVINAL PA22T i^z;

OF POOR QUALi7Y

(56) REFERENCE TIME (32 BITS) - Time from 0 h O m 0s

GMT January 1, 1978 to the beginning of this major

frame in seconds.

(57) SPARES (480 BITS) - Zero filed.

VI-C. ORBITAL SUMMARY RECORD

After the last logical data record in each orbit block is the

orbital summary record. This record contains the peak solar

irradiances for Channels 1 throuch 10 as well as various

quantities computed for the orbita l Summary. The format for this

record is shown in Figure VI-4 and contains the following:

( 1) PHYSICAL RECORD NUMBER 12 BITS) This word

identifies the physi,:a! record number within a data

file.

( 2) RECORD ID (8 BITS) . Identifies record type and the

last record written a file and records in the last

file on the tape. Ve MSB will be set to "1" if that

record is the last one written in the file. The second

most MSB will be set on all records in the last file on

the tape. Tie record type will use the 6 LSB of that

byte to identify the type of record being read: 11 -

LOGICAL DATA RECORD, 12 - ORBITAL SUMMARY RECORD, 13 -

DAILY SUMMARY RECORD, 14 = CALIBRATION ADJUSTMENT TABLE

RECORD.

( 3) LOGICAL RECORD NUMBER (8 BITS): This identifies the

logical record within the physical record.

( 4) ORBIT NUMBER (16 BITS) : The data orbit number at the

beginning of this orbit block.

( 5) START YEAR (16 BITS) : The units and tens digits of

the calendar year.

( 6) START NUMERIC DAY (16 BITS) : The numeric day of the

year (1 to 365 or 366).

( 7) START HOUR/MINUTE (16 BITS) : This word is the GMT

hour and minute ( 100 x hour + minute) of the start of

data contained in this orbit block.

( 8) START LATITUDE (16 BITS) : This is the subsatellite

latitude ( -90 degrees to 90 degrees) at the start of

data in this orbit block (with a scale factor of 100).

( 9) START LONGITUDE (16 BITS) : This is the subsatellite

longitude (-180 degrees to 180 degrees) at the start of

data in this orbit block (with a scale factor of 100).

-39-
ORIGINAL PAG E 19

OF POOR QUALITY

llsl LSB

in 90 IL IL » 7n is 16 15 12 10 R 6 4 2 )

!'MY-' [CAL It;CO^' NO. (.2 It:TS 4 SPARES ^,CT 7^ Bt " ( 1 ^^ 51 Rf N0 _

URU IT No. ( 1 6) qTART r

SIAXT DAY OF TEAR 15) START_H L'R M 16

START LATTTL'nE 16 START LONG 16)

lWOR F :A!(ES/OkLUIT 16) END TF11t )

CND DAY OF YEA1: 16 E\: HOUR / MIN=E 16)

CND LATITUDE 16 END LONGITUDE i

NORTH TUCIMATOR HOUR /M I?,U'E (15) NOR-H TERMINATOR SECONDS 16;

S0: 'H TEr-'11'::,TCR HOUR /M INUTE ( 16) SOUTH TERMINATOR SECONDS (16,

C'(i S. T . DAY G SEC^NDS SAT. DAY

C:FL SAT. HICUT 16) SEC011DS SAT. NI,;HI

C:D: SOLAr,, Pr-%K RR/MIN (16) SECONDS-SOLAR

2 - WOR FRAME AVERAGES

(800 BITS)

NET SOLAR IFJVDIA::CE ALiD 2LFA LCVEL IRRADL1::CE

320 FITS)

2 - MF AVERAGES ( THEX!OPILE I,6E TE:IP)

800 BIAS)

2 MY AVERAGES (HODULZ TE:!?)

480 GITS)

2 - my AVERAGES ( SOLAG CH. ASSE!MLY)

(400 BITS)

CAIL"A ANCLE AT CNTR. OF SOLAR PEAK C16 1

STATUS SU:ZL•1RY (+ OF TL``)

(784 BITS)

SUN-EARTH DISTANCE IN A.U. (16)

STATISTICS FOR ERB 1\STRL:ZtiT =ERATUR::S

(4096 BITS)

STATISTICS FOR SC:,' C11. COL:'TS IN SPACE .LSD B. G.

(1536 BITS)

SW SCA.\ CI15. NET COI;,'I RATIOS

(64 BITS)

r KfJ0R FRA:' i'S C."--LA >2 :CSC '':,LI9F\TIC::S 161

SPACC16 MAJC?.`F%,L=S CiiS. 11 1: OP%\ (16)

llt—OG F?A:U:S CHS. 11 12 CLOSF. O 15) SPARZ 5

(15 B:TS)

STATISTICS FOR " IN 1:ATIOS ( 2665 BITS)

L.W. CALIBRATION INTERCEPTS ( 256 BITS)

L.W. CALIBRATION SLOPES ( 256 BITS)

CI1. 11 IRRADi .1::C:-. WITH S:LT:EZSOtE::, i2 (64 BI-S)

CII. 12 I&RAUI;4:CE WITH 12 W (6- BITS)

CH. 12 - CH. 11 IRRAOI.L:^E 'WITH SHUTIECS C1'F':. 12W (64 BITS)

CH. 11 IRRAOTA::CE WITH SHUT, T-a CLOSLD (64 31TS)

Cll. 12 WITH SkU—,l .F. C:.OSLD (6. B::S)

Ch. 12 - C11. 11 IIRADI.,:: C ::ITIt SiIUT': i, C ZO ((•4 UIiS)

Slri1511CS lOI; c:: u,:t. 51.;..1 !:1iL (G4 UI )

1

2

3

4

5

6

7

8

9

10

11

12

37

47

72

87

11

100

125

253

301

303

304

305

306

?90

398

406

408

410

412

414

416

418

434

436

184

;184

L504

'304

2794

3200

4000

4096

9632

9696

9729

976C

9'92

'2480

_736

2?92

:3055.'

13194

13248

:3312

:3375

_3898

13952

FIGURE VI-4. Logical Record Format for Orbital Summary

-40-
URICINAL PACE

OF POOR QUALITY

MSB LSB

it i

CHANNEL 11 i 12 SHUTTER TEMEPRATURES STATISTICS (96 BITS)

439 14048

SPARES (16)

CRANTIEL 11 IRRADIANCE STATISTICS SHUTTER OPEN (48 BITS)

441

SPARES (16)

14112

CHANNEL 12 IRRADIANCE STATISTICS SHUTTER OPEN ( 48 BITS)

443 14176

SPARES (16)

CHANNEL 12- CHANNEL 11 IRRADIANCE STATISTICS SHUTTER OPEN (48 BITC)

445 14240

CALIBRATION INTERCEPT STATISTICS (192 BITS)

451 CALIBRATION SLOPE STATISTICS (192 BITS)

14432

457 14624

CHANNEL 11 IRRADIANCE WITH SHUTTERS OPEN, 12N (64 BITS)

53824

461 CHANNEL 12 IPRADIANCE WITH SHUTTERS OPEN 12N (6 BITS) 14'.52

463 CHANNEL 11 — CHANNEL 11 IRRADIANCE WITH SY.C:.ERS OPEN, 12N (48 B 14816

SPARES ( 16 SITS)

465 

CHANNEL 11 POPULATION AND SUM OF SQUARESShU —.IRS OPEN, 12N (48 BITS) 14e?C

ESPARES ( 16 BITS)

467 I 01ANNEL 12 POPULAT-DN Mt SUM DF THE SQUAPXS ST-'=PS --PE", 12N (48 D^S) 14944

SPARES ( 16 BITS)

469 CRANNEL 12 - 11 POPf;LAT::N A::D S'M CF -'FM S^,UAPZS SHC'."°_ZS :P°_`:, 12N X48 B:TS^ :`_ 00P

1602 SPARES (38816 BITS1 5)A2G

1682 32 BIT WOP.DS

3364 16 BIT WORDS

6728 8 BIT BYTES

FIGURE VI-4. Logical Record Format for Orbital Summary

(Continued)

-41-
(10) MAJOR FRAMES PER ORBIT (16 BITS): The number of VIP

major frames in this orbit block.

(11) END YEAR ( 16 BITS) : The units and tens digits of the

calendar year at the end of the orbit block.

(12) END DAY OF YEAR ( 16 BITS) : The numeric day of the

year (1 to 365 or 366) at end of the orbit block.

(13) END HOUR/MINUTE ( 16 BITS) : The GMT hour and minute

(100 x hour + minute) at the end of this orbit block.

(14) END LATITUDE (16 BITS): This is the subsatellite

longitude (-90 degrees to 90 degrees) at the end of the

orbit block (with a scale factor of 100).

(15) END LONGITUDE (16 BITS): This is the subsatellite

longitude (-180 degrees to 180 degrees) at the end of

this orbit block (with a scale factor of 100).

(16) TIME AT NORTHERN TERMINATOR ( 16 BITS) : The GMT hour

and minute (100 x hour + minute) of the northern

terminator crossing.

(17) TIME AT NORTHERN TERMINATOR (16 BITS): The GMT

seccnds at the northern terminator crossing.

(18) TIME AT SOUTHERN TERMINATOR ( 16 BITS) : The GMT hour

and minute (100 x hour + minute) of the southern

terminator crossing.

(19) TIME AT SOUTHERN TERMINATOR (16 BITS): The GMT

seconds at the southern terminator crossing.

(20) GMT AT SATELLITE DAY (16 BITS): The GMT hour and

minute ( 100 x hour + minute) at the satellite night to

day transition.

(21) SECONDS AT SATELLITE DAY (16 BITS): The seconds

portion of the GMT at the satellite night to day

transition.

(22) GMT AT SATELLITE NIGHT ( 16 BITS) : The GMT hour and

minute ( 100 x hour + minute) at the satellite day to

night transition.

(23) SECONDS OF SATELLITE NIGHT (16 BITS): The seconds

portion of the GMT at the satellite day to night

transition.

-42-
(24) GMT SOLAR PEAKS (16 BITS)*: The GMT (T 0 time of

the solar channels peak signal. This word is hours and

minutes (100 x hour + minute).

(25) SECONDS OF SOLAR PEAK ( 16 BITS)*: The seconds (T0

time) of the solar channels peak signal.

(26) TWO MAJOR FRAME AVERGES ( 10 CHANNELS x 5 TIMES x 16

BITS = 800 BITS)*: Two major frame averages in counts

for Channels 1 through 10 centered at times relative to

T O as follows*:

V 1 at T O -26 minutes

V 2 at T O -13 minutes

V 3 at TO

V 4 at T O +13 minutes

V 5 at T O +26 minutes

(27) NET SOLAR (R ) AND ZERO (R ) LEVEL IRRADIANCE (2 P ^

PARAMETERS x 10 CHANNELS x 16 BITS = 320 BITS)*: The

net solar irradiance and the zero level irradiance:

RP V 3 - 1/2 (V 2 + V 4 ) Sv-1 (STC)-1

Channels 1 through 10 and R . = V1

S v -1 (STC)-1, Channels 1 through 10

where

R net solar irradiances

V 1 = two major frame averages of detector

outputs as described in Item 26.

R Z zero level irradiance (at T O -26 minutes)

STC sensitivity temperature correction factor

S v -1 = channel sensitivity in a vacuum at 250C

*This information was derived using a coarse method and is

provided only as tentative information. A more precise method

was used in producing the ERB Solar and Earth Flux Data Tape

(SEFDT). A complete set of solar data is also on the SEFDT for

those who wish to develop their own algorithm.

-43-
For net solar irradiance, scale factor for Channels 1

through 5 and 10 is 10, and for Channels 6 through 9

the scale factor is 100. For zero level irradiance,

scale factor for Channels 1 through 5 is 10, and for

Channels 6 through 9 it is 100.

(28) TWO MAJOR FRAME AVERAGE THERMOPILE BASE TEMPERTURES

( 10 TEMPERATURES x 5 TIMES x 16 BITS - 800 BITS) : The

two major frame average for thermopile base temperatures (Celsius) for Channels 1 through 10 at T -26

minutes, T -13 minutes, T 0 , T O +13 minutes, a:Rd

T O +26 minute. All values use a scale factor of 10.

(29) TWO MAJOR FRAME AVERAGE MODULE TEMPERATURES (6

TEMPERATURES x 5 TIMES x 16 BITS - 480 BITS) : The two

major frame average of module temperatures (Celsius)

for Channels 1 through 3, 6, 9, and 10 at TO-26

minutes, T -13 minutes, T 0 , T O +13 minutes, and

T O +16 minute. All values use a scale factor of 10.

(30) TWO MAJOR FRAME AVERAGE ASSEMBLY TEMPERATURES (5

TEMPERATURES x 5 TIMES x 16 BITS - 400 BITS) : The two

major frame averages of f ive solar channel assembly

temperatures at T -26 minutes, T O -13 minutes, T0,

T +13 minutes, ana T O +26 minutes. All values use a

scale factor of 10.

( 31) GAMMA ANGLE (16 BITS) : Gamma angle at the center of

the solar peak.

( 32) STATUS SUMMARY ( 49 STATUS PARAMETERS x 16 BITS = 784

BITS) : Status summary (percent of time) as expressed

in the .)rbital summary histogram (with a scale factor

of 10). See Table VI-4.

(33) SUN-EARTH DISTANCE (16 BITS): The Sun to Earth

dietanc a in astronomical units (with a scale factor of

10 ).

(34) STATISTICS OF TEMPERATURES AND t 5V LOGIC LEVEL (64 x

4 STATISTICS x 16 BITS = 4096 BITS): Statistics of ERB

instrument temperatures and + 5V logic level (all

with a scale factor of 10, except the logic level

voltage which is with a scale factor of 100). See

Table VI-5.

(35) STATISTICS FOR SCAN CHANNELS (8 CHANNELS x 4

STATISTICS x 3 MODES x 16 BITS = 1536 BITS) :

Statistics for scan channels count during: (1)

internal black body views, (2) fixed views of space,

and (3) scanning views of space.

( 36) SHORTWAVE SCAN NET COUNT RATIOS (4 CHANNELS x 16 BITS

= 64 BITS) : Shortwave scan channels net count ratios

(with a scale factor of 1000 obtained during shortwave

check positions.

-44-
TABLE VI-4

Status Summary

NUMBER DESCRIPTION

1 Percent of Major Frames with DSAS Unused or

Unavailable

2 Errors in Beta Scan During Transition

3 Percent of Major Frames with Invalid Time

4 Duty Cycle DSAS Sensor #1

5 Duty Cycle DSAS Sensor #2

6 Duty Cycle DSAS Sensor #3

7 Duty Cycle DSAS Sensor #4

8 Percent Major Frames with Gross Longitude Error

9 Scan On Command(5) Verified

10 PRP On

11 Electronics On Command (1) Verified

12 Scan Off Command(3) Verified

13 Temperature Controller on Command(13) Verified

14 CH 12 FOV Narrow Command(19) Verified

15 Stepper Drives Off Command(20) Verified

16 Electronic Cal. Check Command(21) Verified

17 Reference Channels Shutters Closed Command(16)

Verified

18 CH 12 Shutter Closed Command(17) Verified

19 Scan Logic Enabled

20 PRP Number 2 On

21 Space View Command(6) Verified

22 Shortwave Check Command(7) Verified

. 23 Longwave Check Command(8) Verified

24 Solar Channels Left Command(10) Verified

25 Solar Channels Right Command(11) Verified

26 GO/NO GO Test Off Command(12) Verified

27 Solar Door Close Command(25) Verified

28 Errors in Scan Pattern()

29 Errors in Scan Pattern(3)

30 Missing Major Frame in Scan Sequence

31 Scanning in Mode 1

-45-
f

TABLE VI-4

Status Summary

(Continued)

DESCRIPTION

Scanning in Mode 2

Scanning in Mode 3

Scanning in Mode 4

Scanning in Mode 5

Gamma Angle Less Than -20 Degrees

Heat Radiator A Front Open, Rear Open

Heat Radiator A Front Closed, Rear Open

Heat Radiator A Front Open, Rear Closed

Heat Radiator A Front Closed, Rear Closed

Heat Radiator B Front Open, Rear Open

Heat Radiator B Front Closed, Rear Open

Heat Radiator B Front Open, Rear Closed

Heat Radiator B Front Closed, Rear Closed

S Band-A Transmitter On

S Band-B Transmitter On

Electronics Bit Turned On in Header Block

Not Used

Not Used

NUMBER

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

-46-

`A

^0 ...- ., -mot -_
TABLE VI-5

Statistics of Temperatures

The four (4) Statistics are: MIN, MEAN, MAX, and Standard

Deviation. '- he first 53 temperatures refer to thermistor

data. The 54th location refers to + 5 V Logic Level. The

last 10 temperatures refer to platinum temperature data.

NUMBER DESCRIPTION

1-14 CHs 1-14 Thermopile Base

15 CH 1 Module

16 CH 2 Module

17 CH 3 Module

18 CH 6 Module

19 CH 9 Module

20 CH 10 Module

21 CH 13 Module

22 CH 14 Module

23 CH 11 Shutter Hub

24 CH 12 Shutter Hub

25 CH 10 Port

26 Ch 20 Port

27 CH 21 Port

28 CH 22 Port

29 CH 19 Baffle

30 CH 20 Baffle

31 CH 21 Baffle

32 CH 22 Baff'.e

33 Solar Channels Assembly Casting, Top

34 Solar Channels Assembly Casting, Bottom

35 Solar Channels Assembly Shield Attached Point

36 Solar Channels Assembly Amplifier Heat Sink

37 Earth Flux Channels Assembly, Front

38 Earth Flux Channels Assembly, Back

39 Earth Flux Channels Assembly, Heat Sink

40 Main Frame Mounting Tab, Front

41 Main Frame Mounting Tab, Back

-47-
TABLE VI-5

Statistics of Temperatures

(Continued)

DESCRIPTION

Beta Gimble Bearing and Gear Box

Beta Gimble Motor

Solar Channels Assembly Drive Motors

Shortwave Scanning Channel Detectors

Alpha Sweep Gear Box and Motor

Chopper Motor

Post k.n. Synch Demod. Area

Power Supply Area

A/D Area

Heat Radiator

Remote Scan Mech. Axis Bearing

CH 12 FOV Stop

+ 5 Volt Logic Level

CH 11 Module

CH 12 Module

CH 19 Module

CH 20 Module

CH 21 Nodule

CH 22 Module

CH 19 Blackbody

CH 20 Blackbody

CH 21 Blackbody

CH 22 Blackbody

NUMBER

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

-48-
( 37) MAJOR FRAMES (16 BITS) : The number of major frames

with a gamma angle greater than 20 degrees.

( 38) LWSC CALT BRATI ONS (16 BITS) : The number of longwave

scann ng ch4nne s calibrations during this orbit block.

( 39) SPACE LOOKS (16 BITS) : The number of space looks

during the orbit block.

(40) MAJOR FRAME.i - CHANNELS 11 12 OPEN (16 BITS) : The

number of majorframe ,- w th Channel 11 and Channel 12

open.

( 41) MAJOR FRAMES - CHANNELS 11 12 CLOSED (16 BITS) : The

number of major frames with Channel 11 and Channel 12

closed.

(42) SPARES (16 BITS): Zero filled.

(43) STATISTICS FOR GAIN RATIOS (4 STATISTICS x 3 STEPS x

4 CHANNELS x 16 BITc 688 BITS): These are

statist.cs for electronic gain ratios (current/

prelaunch) with a scale factor of 1000.

(44) CALIBRATION INTERCEPTS (4 STATISTICS x 4 CHANNELS x

6 BITS - 256 BITS): These are statistics for longwave

scan channels calibraticn intercepts (with a scale

factor of 1000).

(45) CALIBRATION SLOPES (4 STATISTICS x 4 CHANNELS x 16

BITS - 256 BITS) : These are statistics for longwave

s:.an 5channels calibration slopes (with a scale factor

Of 10 ).

(46) CHANNEL 11 IRRADIANCE WITH BOTH SHUTTERS OPEN 12W ( 4

STATISTICS x 16 BITS = 64 B:TS) : These are statistics

for Channel 11 :Irradiance with shutter open (with a

scale factor of 100).

(47) CHANNEL 12 IRRADIANCE WITH BOTI: SHUTTERS OPEN 12W ( 4

STATISTICS x 16 BITS - 64 BITS) : These are statistics

for Channel 12 irradiance with the shutter open (with a

scale factor of 100).

(48) CHANNEL 12 - CHANNEL 11 IRRADIANCE WITH BOT H SHUTTERS

OPEN, l2w ( 4 STATISTICS x T6—BITS - 64 BITS): These

are statistics for Channel 12 - Channel 11 irradiance

with both shutters open (with a scale factor of 100).

(49) CHANNEL 11 IRRA DIANCE WITH SHUTTER CLOSED ( 4

STATISTICS x 6 BITS - 64 BITS): These are the

statistics for Channel 11 irradiance with the shutter

closed (with a scale far 1-or of 100).

-49-
(50) CHANNEL 12 IRRADIANCE WITH SHUTTER CLOSED ( 4

STATISTICS x 6 BITS - 64 BITS): These are the

statistics for Channel 12 irradiance with the shutter

closed (with a scale factor of 100).

(51) CHANNEL 12 - CHANNEL 11 IRRADIANCE WITH SHUTTER CLOSED

( 4 STATISTICS x 16 BITS 64 BITS) : These are the

statistics for Channel 12 - Channel 11 irradiance with

the shutter closed (with a scale factor of 100).

(52) EVEN DIGITAL WORDS ( 8 CHANNELS x 4 STATISTICS x 16

BITS = 512 BITS): Orbital average for the eight even

digital words. See Section VI-B, Item 43 for a

description of these words.

(53) GIMBAL SLEW RATE ( 4 STATISTICS x 16 BITS = 64 BITS) :

These words are statistics for the gimbal slew rate.

(54) CHANNEL 11 AND CHANNEL 12 SHUTTER TEMPERATURE

STATISTICS ( 2 CHANNELS x 16 BITS + 2 CHANNELS x 32

BITS - 96 -BITS) : The number of samples ( 16 bits) for

Channel 11 and Channel 12 shutter temperatures and the

sum of square ( 32 bits) or Channel 11 and Channel 12

shutter tempertures, sum of the squares, scaled by 10.

(55) SPARES ( 16 BITS): Zero filled.

(56) CHANNEL 11 IRRADIANCE STATISTICS WITH SHUTTER OPEN

12W ( 48 BITS) : The number of samples (16 bits) and 

the sum of the squares ( 32 bits) for the Channel 11

irradiance when the shutter is open, sum of the

squares, scaled by 100.

(57) SPARES ( 1.6 BITS): Zero filled.

(58) CHANNEL 12 IRRADIANCE STATISTICS WITH SHUTTER OPEN

I2W (48 BITS) : The number of samples (16 bits) and

the sum of the squares ( 32 bits) for Channel 12

irradiance when the shutter is open, sum of the

squares, scaled by 100.

(60) CHANNEL 12 - CHANNEL 11 IRRADIANCE STATISTICS WITH

SHUTTER OPEN ( 48 BITS) : The number of samples ( 6

bits) and the sume of the squares ( 32 bits) for Channel

12 - Channel 11 irradiance with the shutter is open,

sum of the squares, scaled by 100.

(61) CALIBRATION INTERCEPT STATISTICS (4 CHANNELS x16

BITS + 4 CHANNELS x 32 BITS = 192 BITS): The number of

samples ( 16 bits) for the longwave scan channels

calibration intercepts, and the sum of the squares for

the longwave calibration intercepts (32 bits), sum of

squares, scaled by 1000.

-50-
(62) CALIBRATION SLOPE STATISTICS (4 CHANNELS x 16 BITS +

4 CHANNELS x 32 BITS - 192 BITS): The number of

samples (16 bits) for the longwave scan channels

calibration slopes, and the sum of the squares for the

longwave calibration intercepts (32 bits) sum of the

squares scaled by 10 .

(63) CHANNEL 11 IRRADIANCE WITH BOTH SHUTTERS OPEN 12N (4

STATISTICS x 16 BITS = 64 BITS) : These are statistics

for Channel 11 irradiance with both shutters open and

Channel 12 stopped to narrow (with a scale factor of

100).

(64) CHANNEL 12 IRRADIANCE WITH BOTH SHUTTERS OPEN 12N (4

STATISTICS x 16 BITS - 64 BITS) : These are statistics

for Channel 12 irradiance with both shutters open and

Channel 12 stopped to narrow (with a scale factor of

100).

(65) CHANNEL 12 - CHANNEL 11 IRRADIANCE WITH BOTH SHUTTERS

OPEN, 12N ( 4 STATISTICS x 16 PITS = 64 BITS) : These

are statistics for Channel 12 - Channel 11 irradiance

with both shutters open and Channel 12 stopped to

narrow (with a scale factor of 100).

(66) SPARES (16 BITS): Zero filled.

(67) CHANNEL 11 IRRADIANCE STATISTICS WITH BOTH SHUTTERS

OPEN, 12N (48 BITS) : The number of samples (16 bits)

and the sum of the squares (32 bits) associated with

Item 63.

(68) SPARES (16 BITS): Zero filled.

(69) CHANNEL 12 IRRADIANCE STATISTICS WITH BOTH SHUTTERS

OPEN, 12N (48 BITS) : The number of samples (16 bits)

and the sum of the squares (32 bits) associated with

Item 64.

(70) SPARES (16 BITS): Z--ro filled.

(71) CHANNEL 12 - CHANNEL 11 IRRADIANCE STATISTICS WITH

BOTH SHUTTERS OPEN, 12N (48 BITS): The number of

samples ( 16 bits) and the sum of the squares (32 bits)

associated with Item 65.

(72) SPARES ( 38,816 BITS) : These bits are used to fill

out the standard logical record size. These bits will

be set to zero.

-51-
VII. CALIBRATION RECORD/FILE

This file contains a table of suggested adjustments to the ERB

radiances and irradiances (Calibration Adjustment Table) for

Cnannels 1 through 10C, 11, 12, 12N,1 and 1; through 22. These

adjustment factors are computed after the MAT has been produced

and are added to MAT before archiving. The description of the

constituent items are as follows:

( 1) PHYSICAL RECORD NUMBER (12 BITS) : This number will

be

( 2) RECORD ID (8 BITS) : Identifies record type and the

last record written in a file and records in the last

f i le on the tape. The MSB of the first logical record

of the last physical record will be set to "l", if that

physical record is the last one written in the file.

The second most MSB will be set on all logical records

in the last file on the tape. The record type will use

the six LSB of that byte to identify the type of record

being read: 11 - LOGICAL DATA RECORD, 12 = ORBITAL

SUMMARY RECORD, 13 = DAILY SUMMARY RECORD, 14 =

CALIBRATION ADJUSTMENT TABLE RECORD.

( 3) LOGICAL RECORD NUMBER ( 8 BITS) : This identifies the

logical record within a physical record.

( 4) START YEAR (16 BITS): The units and tens digits of

the calendar year of the start of the period for which

the adjustments apply.

( 5) START MONTH (16 BITS) : The month (1-12) of the start

of the pt--^;.cd for which the adjustments apply.

( 6) START DAY (16 BITS) : The day of month of the start

of the period for which the adjustments apply.

( 7) STOP YEAR (16 BITS) : The units and tens digits of

the calendar year of the end of the period for which

the adjustments apply.

( 8) STOP MONTH (16 BITS): The month (1-12) of the end of

the period for which the adjustments apply.

( 9) STOP DAY (16 BITS) : The day of month of the end of

the period for which the adjustments apply.

(10) GENERATION YEAR (16 BITS) : The units and tens digit

of the year in which Calibration Adjustment Table was

generated.

(11) GENERATION MONTH (16 BITS): The month (1-12) in

w ich the Ca i ration Adjustment Table was generated.

(12) GENERATION DAY (16 BITS) : The day of month on which

the Calibration Adjustment Table was generted.

-52-
1

3

4

S

6

7-18

19-29

30-41

42-225

226

236

Physical Record No. (12) —T4 Spares "oun Record Z.D. t Lo ical RMC. No

Year - Start of Period (16) Month - Start of Period (16)

a - Start of Period (16) Year - End of Period (16)

Month - End of riod 16 Day d o f Period (16)

Year - Gen. Date (16) Month - Gen. Date (16)

Channel Adjustaent Slopes 368 Bits

Channel Adjustment Intercepts 368 Bits

ChwwA1 Adjustsnt Uncertainties 368 Bits

Spares 16 Bits

Channel Adjustment Table Cosments 5888 Bits

Spazwe (288)

32

64

96

128

A0

192

60

128

.312

'200

488

ORIGINAL PAGE 19

OF POOR QUAI_I-Y

MgB LSB

32 B 24 22 20 18 16 14 12 10 8 6 4 - 2 1

208 36 BIT WORDS

234 32 BIT WORDS

313 24 BIT WORDS

624 12 BIT WORDS

936 8 BIT WORDS

FIGURE VII-1. ERB MAT Calibration Adjustment Table

Record Format

-53-
( 13) ADJUSTMENT SLOPES (23 CHANNELS x 16 BITS = 368 BITS) :

The adjustment slopes A to be applied to the ERB

channel radiances: S*1 - A S + A where S* =

corrected channel value, S = unLrrecte^ channel value.

The slopes are stored in the following order: Channels

1 through 10C, 11, 12, 12N, 13 through 22. The

adjustment slopes are stored with a scale factor of

1000.

(14) ADJUSTMENT INTE RCEPTS (23 CHANNELS x 16 BITS = 368

BITS): The adjustment intercepts A to be applied to

the ERB channel radiances: S* _ i S + A where S*

= corrected channel radiance, S = un^orrectid channel

radiance. The intercepts are stored in the following

order: Channels 1 through 10C, 11, 12, 12N, 13 through

22. The adjustment intercepts are stored with a sca b

factor of 10.

( 15) ADJUSTMENT UNCERTAINTIES (23 CHANNELS x 16 BITS = 368

BITS) : The percent uncertainty of the channel values

after the correction has been applied (scaled by 10) .

The uncertainties are stored in the following. order:

Channels 1 through 10C, 11, 12, 12N, 13 through 22.

(16) ADJUSTMENT COMMENTS ( 32 CHARACTERS x 23 CHANNELS x 8

BITS) : A comment f ield of 32 characters for each of

the 23 adjustments above.

-54-
APPENDIX A.

MAT Tape Length Estimate

1. Standard Header = 6"

2. Data File

394 YIPS/Orbit

1 VIP/Logical Record

2 Logical Records/Physical Record

For an orbit have:

394 VIPS + 1 Orbital Summary Record + VIP or Daily

Summary Record or Zero-filled Record

= 396 Logical Record/Orbit - 198 Physical Record/Orbit

1 Physical Record = 13,464 bytes

For 1600 BPI tape, 1 physical record = 8.415"

Length of tape for orbit = 198 physical record x 8.415" +

198 IRG x 0.65" - 1794.9"

Maximum of 14 orbits/day = 25,128.2"/data file

3. CAT File

900 bytes long. This takes about .5" of tape

Total length of tape = 25,128.2" + 6" + .5" = 25,134.7"

2094.5'

A-1