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SPECIFICATION NO. EC 701A REV. f 

DATE: 4 Dec 1967 

DOCLMENT CONTROL 

DIN 3701-236-5 P -\GES 

COPY NO. OF -So COPIES 

ENGINEERING CRITICAL COMPONENT SPECIFICATION 

PERFORMANCE / DES I GN 

AND 

PRODUCT CONFIGURATION 

REQUIREMENTS . 

FOR 

I MAGE VELOCITY SENSOR 

CDRL Sequence No. 56 

CDRL Data Item No. C10 

L A ; 

S—c) z 7ts, — y ce, 

CODE IDENTIFICATION NO, 23991 

-SEM SPECIAL HANDLING 
,-7 

12181(.7 

Date 

Date 

F. Gaynor, Subsystem Manager 

Navigation, Guidance & Control 

G 

F. B. Woestemeyer 

Navigation and Control System Engr. 

Date 

(z/e/c 

G. Christopher, System Manager 

MOL Pr ram 

• ra 

ItAr SPEC! .!a 

J. E. Brogan, ma ger 

Development Subc ntracts 

Experimental Equipment 

.7.L414, - -;/0 

G. Frederick, Manager 

Reliability & Design Safety 

1 

Date 

VVC 

Date 

• 

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-SEMETSPECI SPECIFICATION NO. EC701A, Rev. 5' 

GE MOL DEPARTMENT 

INTERNAL SIGN—OFF SHEET 

FOR 

PART 1. PERFORMANCE/DESIGN AND QUALIFICATION REQUIREMENTS 

IMAGE VELOCITY SENSOR 

FOR 

MANNED ORBITING LABORATORY SYSTEM 

Prepared by:

Technical quirements g47f/ 

P. F. Martin, Manager 

47?/*// 

Dat 

APPROVALS 

de c5 A:Lc_ 

R. ler Date 

Navigation, Guidance & Control S/S 

G. R 1, mana r Date 

Sensor System Engineering 
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.1 1f 1 

P EC I AL HANDL itt 

SWIFICATION No. EC701A, Rev. 5 

ENGINEERING CRITICAL COMPONENT CONFIGURATION CHART 

SPECIFICATION PRODUCTION 

ECP'S EFFECTIVTIT 

ISSUE & DATE (SERIAL NUMBER) 

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SPECIFICATION NO. EC701A, Rev. 5 

SPECIFICATION CHANGE LOG 

W 

(.9 

< 

O. 

RE

M

ARKS 

DISTRIBUTION CODES 

, DEPT LOCATION : 

MOL RADNOR, PA. 

SPEC NO. 

EC701A, Rev. 5 

0 

ta 

IU 

W 

I. 

LL 

< 

2 

W 

I- - 

SPECIFICATION TITLE 

IMAGE VELOCITY SENSOR 

PAGE AND/OR PARAGRAPH AFFECTED 

0 

z 

a 

U 

W 

CEI NO. CODE1DENT NO. 

29991 

GENERAL * ELECTRIC 

REVISIONS 

REVISED BY 

SCN 

W 

I0 

0 

Z 

AN 1 

DATE 

0 

z 

STATUS 

W 

It4 

a 

41 > 

- ...- • sat^ 

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SECRET 01 . LI NG 

PART I- PERFORMANCE/DESIGN AND QUALIFICATION REQUIREMENTS 

TABLE OF CONTENTS 

SECTION TITLE 

1.0 SCOPE 

2.0 APPLICABLE DOCUMENTS 

3.0 REQUIREMENTS 

3.1 PERFORMANCE 

3.1.1 FUNCTIONAL CHARACTERISTICS 

3.1.1.1 PRIMARY PERFORMANCE CHARACTERISTICS 

3.1.1.1.1 IMAGE VELOCITY OUTPUT SIGNALS 

3.1.1.1.2 LOCK-ON SIGNAL 

3.1.1.1.3 OPERATIONAL READINESS SIGNAL 

3.1.1.1.4 DIAGNOSTIC MONITORING SIGNALS 

3.1.1.1.5 ALIGNMENT 

3.1.1.2 SECONDARY PERFORMANCE CHARACTERISTICS 

3.1.2 OPERABILITY 

3.1.2.1 RELIABILITY 

3.1.2.2 MAINTAINABILITY 

3.1.2.2.1 MAINTENANCE AND REPAIR CYCLES 

3.1.2.2.2 SERVICE AND ACCESS 

3.1.2.3 USEFUL LIFE 

3.1.2.4 ENVIRONMENTAL 

3.1.2.5 TRANSPORTABILITY 

3.1.2.6 HUMAN PERFORMANCE 

3.1.2.7 SAFETY 

3.2 COMPONENT DEFINITION 

3.2.1 INTERFACE REQUIREMENTS 

3.2.1.1 SCHEMATIC ARRANGEMENT 

SPEC !M DUNG: 
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TABLE OF CONTENTS 

SECTION TITLE 

3.2.1.2 DETAILED INTERFACE DEFINITION 

3.2.1.2.1 NORMAL INPUT POWER CONDITIONS 

3.2.1.2.2 ABNORMAL CONDITIONS 

3.2.1.2.3 SENSOR OUTPUT CHANNELS 

3.2.1.2.4 MOUNTING PROVISIONS 

3.2.1.2.5 OPTICAL INTERFACE 

3.2.1.2.6 THERMAL INTERFACE 

3.2.2 COMPONENT IDENTIFICATION 

3.3 DESIGN AND CONSTRUCTION 

3.3.1 GENERAL DESIGN FEATURES 

3.3.1.1 OVERALL DIMENSIONS 

3.3.1.2 WEIGHT 

3.3.1.3 PACKAGING ENVELOPES 

3.3.1.4 COMPONENT SEAL 

3.3.2 SELECTION OF SPECIFICATIONS AND STANDARDS 

3.3.3 MATERIALS, PARTS AND PROCESSES 

3.3.4 STANDARD AND COMMERCIAL PARTS 

3.3.5 MOISTURE AND FUNGUS RESISTANCE 

3.3.6 CORROSION OF METAL PARTS 

3.3.6.1 ELECTROLYTIC CORROSION 

3.3.6.2 STRESS CORROSION 

3.3.6.3 PROTECTIVE METHODS 

3.3.7 INTERCHANGEABILITY AND REPLACEABILITY 

3.3.8 WORKMANSHIP 

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TABLE OF CONTENTS 

3.3.9 ELECTROMAGNETIC INTERFERENCE 

3.3.10 IDENTIFICATION AND MARKING 

3.3.11 STORAGE 

3.3.12 CLEANLINESS 

3.3.13 VIBRATION 

3.3.13.1 SENSOR GENERATED VIBRATION 

3.3.13.2 RESONANCE 

3.3.14 SENSOR GENERATED NOISE 

4.0 QUALITY ASSURANCE PROVISIONS 

4.1 CATEGORY I TEST 

4.1.1 ENGINEERING. TEST AND EVALUATION 

4.1.2 PRELIMINARY QUALIFICATION TESTS 

4.1.3 FORMAL QUALIFICATION TESTS 

4.1.3.1 INSPECTION 

4.1.3.2 ANALYSES 

4.1.3.3 DEMONSTRATIONS 

4.1.3.4 TEST 

4.1.3.4.1 TEST CONDITIONS AND PROCEDURES 

4.1.3.4.2 DESIGN/PERFORMANCE VERIFICATION TESTS 

4.1.3.4.3 PRELIMINARY PERFORMANCE TESTS 

4.1.3.4.3.1 DIELECTRIC STRENGTH AND INSULATION RESISTANCE 

4.1.3.4.3.2 CONTINUITY TEST 

4.1.3.4.3.3 PERFORMANCE TEST 

4.1.3.4.4 OPERABILITY ASSURANCE TESTS 

4.1.3.4.5 QUALIFICATION ENVIRONMENTAL TESTS 

—SEeRETSPEet-A t liA1`001tiG vii 

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TABLE OF CONTENTS 

SECTION TITLE 

4.1.4 RELIABILITY TEST AND ANALYSIS 

4.2 CATEGORY II TEST PROGRAM 

6.0 NOTES 

10.0 APPENDIX 

---SEeREFcp Viif 
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PART I PERFORMANCE/DESIGN AND QUALIFICATION REQUIREMENTS 

TABLE OF CONTENTS 

FIGURES TITLE 

1 LINEARITY IN LARGE SIGNAL REGION 

2 ALLOWABLE INDICATED VELOCITY VS. TRUE VELOCITY 

2 TRUE IMAGE VELOCITY - IPS 

3A K VALUES 

3B -LATER4 PSD DISTRIBUTION 

5A ATTENUATION CHARACTERISTIC 

5B -LATER6 ALLOWABLE NOISE AND BIAS IN LARGE SIGNAL REGION 

7 GAIN - PHASE PLOT 

8 ELECTRICAL INTERFACE 

9 AVERAGE LUMINANCE VESUS SUN ANGLE 

10 OPTICS TRANSMITTANCE VERSUS WAVELENGTH 

11 BEST ESTIMATE OF MIN. EXPECTED VALUES 

12 NORMALIZED RESPONSE 

13 NORMALIZED RESPONSE 

14 ELECTRONICS BOX DEFINITION 

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SPECIFICATION NO. EC 701A REV. 5 

PART I OF TWO PARTS 

PAGE I-1 OF 52 

ENGINEERING CRITICAL COMPONENT SPECIFICATION 

PART I. PERFORMANCE / DESIGN AND QUALIFICATION REQUIREMENTS 

IMAGE VELOCITY SENSOR 

4 December 1967 

Date 

SPECIAL HANDLING 
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SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 002 

--SEeREF rr "f\NDLING 

1.0 SCOPE 

THIS PART OF THIS SPECIFICATION ESTABLISHES THE REQUIREMENTS 

FOR PERFORMANCE, DESIGN, TEST AND QUALIFICATION OF ONE MISSION-DESIGNSERIES OF EQUIPMENT IDENTIFIED AS THE IMAGE VELOCITY SENSOR -IVs-. 

THIS COMPONENT IS USED TO DETECT THE MOTION OF AN IMAGE IN AN 

IMAGE PLANE AND PROVIDE SIGNALS PROPORTIONAL TO THE MOTION. THIS 

COMPONENT IS ALSO REQUIRED TO PROVIDE SIGNALS WHICH INDICATE THE PRESENCE 

OF CLOUDS IN THE IMAGE, AND A CONDITION OF IMAGE BRIGHTNESS BELOW THE 

THRESHOLDS SPECIFIED. CLOUD DETECTION CAPABILITY SHALL NOT DEGRADE THE 

PRIMARY IVs TASK. 

2.0 APPLICABLE DOCUMENTS 

THE FOLLOWING DOCUMENTS, OF EXACT ISSUE SHOWN, FORM A PART OF THIS 

SPECIFICATION TO THE EXTENT SPECIFIED HEREIN. IN THE EVENT OF CONFLICT 

BETWEEN DOCUMENTS REFERENCED HERE AND THE DETAILED CONTENT OF SECTION 3, 

THE DETAILED REQUIREMENTS OF SECTION 3 SHALL BE CONSIDERED A SUPERSEDING 

REQUIREMENT. ANY CONFLICT BETWEEN A DOCUMENT LISTED IN THIS SECTION AND A 

LOWER TIER REFERENCED DOCUMENT SHALL BE RESOLVED IN FAVOR OF THE LISTED 

DOCUMENT. 

SYSTEM PROGRAM DOCUMENTS 

SAFSL 10003 ENVIRONMENTAL DESIGN AND TEST CRITERIA 

1 SEPT 1966 

SPECIFICATIONS 

MILITARY 

MIL-E-25366C ELECTRICAL & ELECTRONIC EQUIP. & SYSTEMS, 

27 FEB. 1961 GUIDED MISSILES 

MIL-E-5400H ELECTRONIC EQUIPMENT, AIRCRAFT, GENERAL 

1 JUNE 1965 SPECIFICATION FOR 

ESPECIAL HANDLING 
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SPECIFICATION NO. EC-701A REV 5 

--A€CREF Sidi-0AL HIADUNG°4167 

PAGE 003 

MIL-S-38130A SAFETY ENGINEERING OF SYSTEMS 

15 JULY 1966 

MS 33586-A METALS. DEFINITION OF DISSIMILAR 

16 DECEMBER 1958 

GENERAL ELECTRIC COMPANY 

DR 1100A ENVIRONMENTAL CRITERIA AND COMPONENT TEST 

MARCH 1967 

AN 1 THRU 5 

REQUIREMENTS SPECIFICATION - MOL 

DR 11108 SELECTED AVE PARTS LIST 

15 NOV. 1967 

DR 1112 ADD 1 SELECTED PROCESSES FOR USE IN THE MOL MISSION 

9 JAN. 1967 MODULE. GENERAL SPEC FOR 

DR 1113 SELECTED STRUCTURAL PARTS FOR USE IN THE MOL 

18 APRIL 1966 MISSION MODULE, GENERAL SPEC FOR 

DR 1115 GENERAL SPECIFICATION FOR SELECTED MATERIALS 

NOV. 1966 

DP 1690 

11 NOV 1966 

5-30000 

18 SEPT 1964 

S-30001 

17 JUNE 1963 

FOR USE IN MOL LAB. MODULE 

ELECTROMAGNETIC COMPATIBILITY REQUIREMENTS 

FOR MOL PROGRAM 

DESIGN REQUIREMENTS FOR ELECTRONIC MODULES 

MODULE, ELECTRONIC, METAL FRAME-ASSEMBLY, 

INSTRUCTION FOR 

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SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 004 

LIANDLING 

5-30002 MODULES. ELECTRONIC. ENCAPSULATED -CORDWOOD12 JUNE 1963 ASSEMBLY INSTRUCTION FOR 

TR-951 IVS TESTER 

STANDARDS 

MIL-STD-130B IDENTIFICATION MARKING OF U.S. MILITARY 

CHANGE NO. 1 PROPERTY 

7 FEBRUARY 1964 

MIL-STD-143A 

CHANGE NO. 1 

14 MAY 1963 

MIL-STD-454A 

5 JAN 1965 

SPECS AND SIDS, ORDER OF PRECEDENCE 

GENERAL REQUIREMENTS FOR ELECTRONIC EQUIP 

FED-STD-595 COLORS 

CHANGE NO. 2 

19 FEBRUARY 1962 

MIL-STD-795 

CHANGE NO. 1 

26 AUG. 1964 

DRAWINGS 

GENERAL ELECTRIC 

GE-711-03013 

REV 1 

TBD 

COLORS 

SPACE ENVELOPE AVAILABLE FOR IVS -M/ASPACE ENVELOPE AVAILABLE FOR IVS -ASPECIAL HANDMI 
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SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 005 

SPEIL HANDLING 

BULLETINS 

ANA BULLETIN ELECTRONIC EQUIPMENT, AIRCRAFT & GUIDED 

400, REV. U MISSILES, APPLICABLE DOCUMENTS 

15 MAY 1964 

OTHER PUBLICATIONS 

AIR FORCE EXHIBIT 

MIL-HDBK-217A RELIABILITY STRESS & FAILURE RATE DATA 

FOR ELECTRONIC EQUIPMENT 

SP-63-470 VOL 1 FARADA 

SSD 61-70A COLOR & MARKING CRITERIA FOR LARGE SOLID 

REVISION NO. 1 MOTORS 

7 NOVEMBER 1962 

SECRET PEG yin 

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SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 006 

3.0 REQUIREMENTS SPECIAL HANDLING 

3.1 PERFORMANCE 

3.1.1 FUNCTIONAL CHARACTERISTICS 

THE IVS SHALL SENSE IMAGE VELOCITY AT THE CENTER OF THE FORMAT OF THE IMAGE PROVIDED BY THE PAYLOAD PRIMARY OPTICS, DURING TARGET 

ACQUISITION AND TRACKING+ AND RESOLVE IT INTO TWO VECTOR COMPONENTS ALONG 

PERPENDICULAR AXES -X, Y-. NOMINALLY, THE X COORDINATE IS DEFINED AS 

THE OBSERVED IN-TRACK COMPONENT OF VELOCITY FOR NADIR TARGETS AND THE Y 

COORDINATE 15 DEFINED AS THE OBSERVED CROSS-TRACK COMPONENT OF VELOCITY 

FOR NADIR TARGETS. ALL REQUIREMENTS, UNLESS OTHERWISE NOTED, REFER 

TO THE RESULTANT VELOCITY AS RECONSTRUCTED FROM THESE COMPONENTS. 

THE IVS SHALL PROVIDE THE FOLLOWING OUTPUT SIGNALS. 

A. IMAGE VELOCITY 

B. LOCK-ON SIGNAL 

C. OPERATIONAL READINESS MONITORING 

D. DIAGNOSTIC MONITORING. 

E. SIGNALS INDICATIVE OF CLOUDS WITHIN OPTICAL FOV 

F. SUB THRESHOLD SCENE LUMINANCE INDICATION 

3.1.1.1 PRIMARY PERFORMANCE CHARACTERISTICS 

3.1.1.1.1 IMAGE VELOCITY OUTPUT SIGNALS 

THE OUTPUT IMAGE VELOCITY SIGNALS FROM THE IVS SHALL BE PROVIDED 

IN RECTILINEAR COORDINATE FORM. EACH SHALL BE PROPORTIONED TO ITS 

RESPECTIVE COMPONENT OF THE IMAGE VELOCITY VECTOR RESOLVED ALONG THE IVS 

PERPENDICULAR AXES. 

EACH COMPONENTST IMA TIDLII/Id&lBLOUTPUTTED IN ANALOG 

FORM WITH A GAIN FACTOR OF 10 VOLTS PER IPS, A MAXIMUM -SATURATION- VALUE 

OF FIVE VOLTS AND AN IMPEDANCE OF LESS THAN 50 OHMS. A SEPARATE SENSE OR 

SIGN SIGNAL SHALL BE PROVIDED FOR EACH COMPONENT TO PROVIDE PLUS OR MINUS 

-POM- DIRECTION TO EACH COMPONENT AMPLITUDE SIGNAL. A SENSE SIGNAL BETWEEN 

ZERO AND 0.5 V SHALL DENOTE NEGATIVE POLARITY. A SENSE SIGNAL BETWEEN 2.4 

AND 4.8 V SHALL DENOTE POSITIVE POLARITY. THE MAXIMUM VALUE REFERENCE 

VOLTAGE - NOMINALLY, FIVE VOLTS- SHALL SHALL ALSO BE OUTPUTTED FOR 

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REFERENCE PURPOSE FOR AN EXTERNAL A-D CONVERTER. THE OUTPUT IMPEDANCE OF 

THE SENSE AND REFERENCE LEVEL SHALL BE LESS THAN 20 K OHMS. ADDITIONAL 

CHARACTERISTICS OF THE IMAGE VELOCITY OUTPUT SIGNALS ARE 

A. DYNAMIC RANGE 

THE IVS SHALL PROVIDE SIGNALS REPRESENTATIVE OF TRUE 

IMAGE VELOCITIES FROM ZERO TO 0.3 IPS -600 MICRO 

RAD/SEC.- IN THE PRIMARY IMAGE PLANE. IMAGE SHEARING AND 

ROTATIONAL VELOCITY COMPONENTS IN THE IMAGE PLANE SHALL NOT 

BE SENSED. 

B. LINEARITY 

LINEARITY REQUIREMENTS ARE SPECIFIED SEPARATELY IN THE LARGE 

SIGNAL AND NULL REGIONS. THE LARGE SIGNAL REGION IS DEFINED 

OVER THE RANGE OF TRUE IMAGE VELOCITIES BETWEEN THE VALUES 

OF 0.0225 IPS AND 0.3 IPS. 

THE NULL REGION 15 DEFINED OVER THE RANGE OF TRUE IMAGE 

VELOCITIES BETWEEN THE VALUES OF ZERO AND 0.0225 IPS. 

INDICATED IMAGE VELOCITY IS DEFINED AS THE RATIO OF SENSOR 

OUTPUT VOLTAGE TO THE SENSOR GAIN OF TEN VOLTS PER IPS. 

1. LARGE SIGNAL REGION 

THE CURVE RELATING THE TRUE AND INDICATED IMAGE 

VELOCITIES SHALL LIE WITHIN THE SHADED REGION IN FIGURE 

1. IT NEED NOT BE REPEATED FOR DIFFERENT SCENES, BUT 

MUST FOR A GIVEN SCENE BE SINGLE-VALUED, I.E., THE SLOPE 

OF THE CURVE FOR ANY TRUE IMAGE VELOCITY SHALL ALWAYS 

BE OF POSITIVE POLARITY. 

2. NULL REGION 

THE CURVE RELATING THE TRUE AND INDICATED IMAGE 

VELOCITIES SHALL LIE WITHIN THE SHADED REGION IN 

FIGURE 2. THIS REQUIREMENT IS ON A PER AXIS BASIS. 

THE SLOPE OF THE CURVE AT ANY TRUE IMAGE VELOCITY FROM 

0.001 IPS TO 0.0225 IPS SHALL BE FROM 0.9 TO 1.1. 

TIE SLOPE IN THE THRESHOLD REGION DEFINED IN FIGURE 2 

SHALL BE WITHIN THE RANGE 0 TO 1.1. 

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SPECIFICATION NO. EC-701A REV 5 12/04/67" PAGE 008 

C. IVS NOISE AND BIAS 

IVS NOISE AND BIAS REQUIREMENTS ARE SPECIFIED SEPARATELY 

IN THE LARGE SIGNAL AND NULL REGIONS. THESE REGIONS ARE 

DEFINED IN PARAGRAPH B. 

1. NOISE DEFINITION 

IVS OUTPUT NOISE FROM EACH AXIS WILL BE SEPARATED INTO 

ITS PERIODIC AND RANDOM COMPONENTS. 

THE TOTAL NOISE WILL BE DEFINED BY THE EXPRESSION 

A/7 , /V)/ 2 2 1/4Y/6- A44 

WHERE. 

A/A,A 11- htxp 2 J7GWA 

Mr =A/YR *# AlYP 2 LS/0MA 

N T IS THE TOTAL NOISE IPS 

MAR IS THE RANDOM COMPONENT OF NOISE ABOUT 

THE X AXIS - IPS 2 SIGMA 

Nxp IS THE TOTAL PERIODIC NOISE ABOUT 

THE X AXIS - IPS 

Nyp IS THE RANDOM COMPONENT OF NOISE ABOUT 

THE Y AXIS - IPS 2 SIGMA 

NYP IS THE TOTAL PERIODIC NOISE ABOUT 

THE Y AXIS - IPS 

2 SIGMA HEREIN DEFINED TO MEAN THAT MEASURED VALUES BE 

WITHIN THIS RANGE OF VALUES 95% OF THE TIME. 

TOTAL PERIODIC NOISE -NA? AND MVP-- ABOUT THE X-Y AXES 

SHALL BE OBTAINED AS FOLLOWS 

NOTE ALL PERIODIC FREQUENCIES -AND AMPLITUDES- FOR EACH 

AXIS AND OBTAIN ALL POSITIVE COMPLEMENTARY FREQUENCIES 

FROM THE EXPRESSIONS 

COMPLEMENTARY FREQUENCIES = 

tx) 

) 

f.ARE THE PRIMARY PERIODIC FREQUENCIES ABOUT ,LA 

SPECi/U ING 
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-SEREF Si A k‘ I n LING 

. LJ 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 009 

THE X AXIS - HZ 

i'iy ARE THE PRIMARY PERIODIC FREQUENCIES ABOUT 

THE Y AXIS - HZ 

Fs IS THE SAMPLING FREQUENCY EQUALS 10 HZ 

^CX ARE THE COMPLEMENTARY PERIODIC FREQUENCIES ABOUT 

THE X AXIS - HZ 

' ARE THE COMPLEMENTARY PERIODIC FREQUENCIES ABOUT 

THE Y AXIS - HZ 

ENTER EACH PRIMARY AND COMPLEMENTARY FREQUENCY ALONG 

THE ABCISSA IN FIGURE 3A OR FIGURE 3B -TBD- FOR 

FREQUENCIES ABOVE 15 HZ. OBTAIN THE CORRESPONDING 

Kt,,,r AND Kievy FOR EACH AXIS, OFF THE 

ORDINATE OF THE GRAPH. CALCULATE Nxp AND Nyp FROM THE 

SUMMATION. 

krp A t‘ x Kiex Alex 

4 

= 21<c" y A ly -/- "ley -.4. er 

A = HALF-AMPLITUDE OF EACH PERIODIC FREQUENCY - IPS 

THE RANDOM COMPONENT -61X/T) Nye,1 OF NOISE ABOUT X AND Y 

AXES WILL BE DETERMINED AS FOLLOWS: 

THE POWER-SPECTRAL-DENSITY -PSD- OF THE RANDOM NOISE 

COMPONENT ABOUT EACH AXIS WILL BE COMPUTED BY A METHOD 

APPROVED BY THE GENERAL ELECTRIC COMPANY. A SUGGESTED 

TEXTBOOK APPROACH INVOLVES THE DETERMINATION OF PSD 

FROM THE EQUATION, 

PSD =1112) = /05 ( c-,``1?-":2/ 1". 

WHERE, 

0(1)= AUTOCORRELATION FUNCTION 

„.„ 

T "(refit , ) de-

-r 

- I , 
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-20E1-SPECIAL IANDLINCti 

SPECIFICATION NO. EC-701A REV 5 • 12/04/67 PAGE 010 

THE DATA LENGTH, Ts WILL BE 500 SECONDS. THE SAMPLING 

FREQUENCY WILL BE 10 HZ. PSD DATA VERSUS FREQUENCY 

WILL BE PLOTTED UP TO 30 HZ. THE SHAPE OF THE PSD WILL 

BE REPEATABLE AT 10 HZ INTERVALS AS ILLUSTRATED IN 

FIGURE 4. EACH CURVE irx * AND iy7, ) WILL BE 

MULTIPLIED BY THE APPROPRIATE ATTENUATION CHARACTERISTIC 

OF FIGURE 5A OR FIGURE 5B -TBD- AND THE RESULTANT 

AMPLITUDE OBTAINED AT CORRESPONDING FREQUENCIES. 

THE ATTENUATION CHARACTERISTIC OF FIGURE 5A IS ALSO 

SHOWN IN FIGURE 3A ON A DB SCALE. 

THE RESULTANT CURVES Lcx ANDIcey SHALL THEN BE 

PROCESSED AS FOLLOWS TO YIELD THE DESIRED N xRAND Ny,q 

iVyR = 21-# 7icer dw ( 2a---) 

AIM = 24÷-,77eex 26-9 

2. LARGE SIGNAL REGION 

THE SUM TOTAL CONTRIBUTION OF NOISE -NT-- AND BIAS -Br 

SHALL HAVE A MAGNITUDE WHICH DOES NOT LIE OUTSIDE THE 

SHADED REGION IN FIGURE 6 THE TOTAL BIAS -Br- SHALL 

BE DEFINED BY THE RSS OF By AND By WHICH ARE, 

RESPECTIVELY, THE X AND Y COMPONENTS OF IVS BIAS. 

Br (26-)= ing (2(r) 2 # gy(2 a) 2 

3. NULL REGION 

THE SUM TOTAL CONTRIBUTION OF NOISE -NT AND BIAS -B,rSHALL NOT EXCEED 0.010IPS //2 SIGMA) 

Nr )L a D/D /PS (2(6 

D. SATURATION 

THE IVS SHALL NOT SATURATE FOR INDICATED IMAGE VELOCITIES OF 

LESS THAN 0.3 IPS - 600 MICRO RAD/SEC. WHEN EITHER AXIS 

IS SATURATED THE IVS SHALL INDICATE THIS CONDITION FOR EACH 

SECRETSPEC1AL 11.,A,"'71ING 
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SPECIFICATION NO. EC-701A REV 5 t,7 PAGE 011 

P WO e FD • ' 

2iN 

--SEeREF 0, Ar:.;: 

SATURATED AXIS. THE MINIMUM SIGNAL FOR THIS CONDITION SHALL 

BE A POLARITY SIGNAL CORRESPONDING TO THE VELOCITY POLARITY 

FOR COMPONENT VELOCITIES UP TO 0.5 IPS. ANEXTERNAL DISABLE 

SIGNAL CAN BE PROVIDED TO THE IVS DURING PERIODS OF KNOWN 

SATURATION. AFTER PERIODS OF SATURATION OF UP TO TWO 

SECONDS, THE IVS SHALL RECOVER FROM SATURATION WITHIN 0.1 

SECOND AFTER THE IMAGE VELOCITY FALLS WITHIN ITS DYNAMIC 

RANGE. THE IVS SHALL RECOVER WITHIN 0.5 SECOND AFTER 

SATURATION PERIODS IN EXCESS OF TWO SECONDS. IN DEFINING 

THIS REQUIREMENT, THE IVS SHALL NOT BE CONSIDERED TO BE 

IN SATURATION WHEN AN EXTERNAL DISABLE SIGNAL IS SUPPLIED, 

REGARDLESS OF IMAGE VELOCITIES DURING THESE PERIODS. TIME 

OF RECOVERY FROM SATURATION IS DEFINED AS THE TIME AT 

WHICH THE IVS OUTPUT SIGNAL CHANGES FROM ITS SATURATED 

VALUE AND REGAINS A PROPORTIONAL RESPONSE STATE WITH 

SPECIFIED ACCURACY WITHIN THE DYNAMIC CONSTRAINTS AS 

DEFINED IN PARA. 3.1.1.1.1.E. 

E. FREQUENCY RESPONSE 

THE DYNAMIC RESPONSE OF THE IVS SHALL BE THAT OF A 

FIRST-ORDER LAG 1/0,--5/277-7c0) OVER THE RANGE OF TRUE 

IMAGE VELOCITY FROM 0.0025 TO 0.25 IPS. ANACCEPTABLE 

RANGE OF THE LAG FREQUENCY WILL BE 

/#4 <fo <c>., 

THE VENDOR SHALL SPECIFY THIS FREQUENCY SO THAT DEVIATIONS 

FROM FIRST-ORDER LAG PHASE AND AMPLITUDE CHARACTERISTICS 

CAN BE DETERMINED. DEVIATIONS FROM THE IDEAL AMPLITUDE 

AND PHASE CHARACTERISTICS OF THE FIRST-ORDER LAG DUE TO 

ALL SOURCES SUCH AS FILTERING, TIME DELAYS, ETC., WILL 

BE ALLOWED PROVIDED THEY DO NOT EXCEED THE MOST NEGATIVE 

PERMISSIBLE GAIN AND PHASE PLOTS SHOWN IN FIGURE 7. 

FOR FREQUENCIES LESS THAN 5 HZ. THE FOLLOWING TOLERANCES 

ARE PERMITTED 
ISIRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 012. 

SECRET ~' Lusi nruiOLING 

PHASE DEVIATION BETWEEN POM ,5 DEGREES 

AMPLITUDE DEVIATION BETWEEN POM 1.5 DB 

3.1.1.1.2 LOCK-ON SIGNAL 

THE IVS SHALL PROVIDE A SIGNAL FOR EACH AXIS INDICATING THE 

IMAGE LOCK-ON STATUS. THE OUTPUT SHALL BE BETWEEN 3.5 AND 5.0 VOLTS 

-LOGIC ONE- WHEN THE IMAGE 15 IN THE LOCKED-ON CONDITION AND BETWEEN ZERO 

AND 0.5 VOLT -LOGIC ZERO- WHEN NOT LOCKED-ON OR IN A SATURATED CONDITION. 

LOCK-ON IS DEFINED AS SENSING THE IMAGE PROVIDED WITHIN THE REQUIREMENTS 

OF THIS SPECIFICATION. 

3.1.1.1.3 OPERATIONAL READINESS SIGNAL 

THE IVS SHALL PROVIDE AN OUTPUT SIGNAL TO DENOTE OPERATIONAL 

READINESS. A LOGIC ONE SHALL BE OUTPUTTED WHEN THE IVS IS OPERATIONALLY 

READY, AND A LOGIC ZERO SHALL BE OUTPUTTED WHEN THE IVS IS NOT 

OPERATIONALLY READY. THE OPERATIONAL READINESS 15 DEFINED AS THE CAPABILITY 

TO SENSE AN IMAGE, WHEN PROVIDED. 

"IfOgSPECIA 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 SECRET Si ,aAOLIN 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 013 

3.1.1.1.4 DIAGNOSTIC MONITORING SIGNALS 

A MAXIMUM SPACE ALLOCATION OF TWO EQUIVALENT FORMAT WORDS IS 

ASSIGNED TO THE IVS COMPONENT FOR DIAGNOSTIC MONITORING TO THE TELEMETRY. 

EVERY FOUR SECONDS AN EQUIVALENT FORMAT WORD PROVIDES FOR 256 EIGHT BIT 

SAMPLES -WORDS-. ALL IVS DIAGNOSTIC SIGNALS MUST BE NORMALIZED TO BE 

WITHIN THE RANGE OF ZERO TO FIVE VOLTS. THE IVS COMPONENT VELOCITY 

SIGNALS SHALL BE INCLUDED AMONG THE DIAGNOSTIC SIGNALS. 

3.1.1.1.5 ALIGNMENT 

THE IVS MOUNTING BASE SHALL BE INSCRIBED WITH ORTHOGONAL X AND 

Y INDEX MARKS. THE ELECTRICAL SIGNAL AXES OF THE COMPONENT SHALL BE 

RESPECTIVELY COINCIDENT WITH THESE INDICES WITHIN POM 0.5 DEGREE. 

THIS ALIGNMENT SHALL BE MAINTAINED THROUGHOUT THE SPECIFIED ENVIRONMENT AND 

OPERATING CONDITION RANGES. 

3.1.1.2 SECONDARY PERFORMANCE CHARACTERISTICS 

THE IVS SHALL BE OPERABLE, WITHIN THE REQUIREMENTS OF THIS 

SPECIFICATION, WITHIN THREE MINUTES AFTER INPUT VOLTAGE IS APPLIED AND 

WITHIN THE SPECIFIED ENVIRONMENT. 

3.1.2 OPERABILITY 

3.1.2.1 RELIABILITY 

THE IVS SHALL HAVE A MTBF OF AT LEAST 10,000 HRS. WHERE FAILURE IS 

DEFINED AS THE INABILITY TO MEET THE FUNCTIONAL REQUIREMENTS OF THIS 

SPECIFICATION. DESIGN OF THE IVS SHALL BE SUCH THAT A FAILURE OF THIS 

COMPONENT SHALL NOT ADVERSELY AFFECT ANY OTHER EQUIPMENT WITH WHICH IT HAS 

AN INTERFACE. 

3.1.2.2 MAINTAINABILITY 

THE IVS SHALL BE DESIGNED. TO INCORPORATE EASE OF MAINTAINABILITY 

TO MINIMIZE EQUIPMENT DOWN TIME DURING TEST AND CHECKOUT. 

-Staff S PECIX 
r. 

JIRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 014 

SECRET c P' !mum !kw 

3.1.2.2.1 MAINTENANCE AND REPAIR CYCLES 

DESIGN OF THE IVS SHALL REQUIRE NO PERIODIC IN—FLIGHT 

MAINTENANCE. NO OTHER PERIODIC MAINTENANCE SHALL BE REQUIRED AT LESS THAN 

45 DAY INTERVALS. 

3.1.2.2.2 SERVICE AND ACCESS 

PARTS REQUIRING PERIODIC MAINTENANCE OR ADJUSTMENT SHALL BE 

READILY ACCESSIBLE. THE DESIGN OF THE IVS SHALL PERMIT READY ACCESS TO 

PARTS TO SIMPLIFY INSPECTION, SERVICING AND REPLACEMENT. DESIGN SHALL 

PERMIT INTERCHANGING OF PARTS USED IN REDUNDANT CHANNELS. 

3.1.2.3 USEFUL LIFE 

THIS COMPONENT SHALL BE CAPABLE OF PERFORMING IN ACCORDANCE WITH 

THE REQUIREMENTS OF THIS SPECIFICATION THROUGHOUT A USEFUL OPERATIONAL 

LIFE OF 1112 HOURS, WHILE MEETING ALL COMBINATIONS OF THE FOLLOWING 

CONDITIONS 

A. TRANSPORTATION— LIMITED TO 60 DAYS AS DEFINED IN 

DR 1100' PARAGRAPH 3.1.2.1. 

B. STORAGE— PER PARAGRAPH 3.3.11 OF THIS SPECIFICATION. 

C oHANDLING, ASSEMBLY AND CHECKOUT— 9 MONTHS MAXIMUM AS DEFINED 

IN DR 1100, PARAGRAPH 3.1.2.3. 

D. PRE—LAUNCH PHASE— 13 MONTHS AS DEFINED IN DR 1100, 

PARAGRAPH 3.1.2.4. 

E. LAUNCH AND ASCENT— 10 MINUTES AS DEFINED IN DR 1100' 

PARAGRAPH 3.1.2.5. 

F. ORBITAL OPERATION— A MINIMUM TOTAL OF 2500 HRS. —556 HRS ON 

AND 1944 HRS. OFF— WITH A DUTY CYCLE OF 20 MINUTES ON AND 70 

MINUTES OFF, EXCLUDING WARM—UP TIME. 

3.1.2.4 ENVIRONMENTAL 

THE COMPONENT SHALL BE DESIGNED TO WITHSTAND, AND SUFFER NO DE—

GRADATION OF PERFORMANCE AFTER EXPOSURE TO THE ENVIRONMENTAL CONDITIONS 

--soffspEcy\I 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 Sh:u DLI NG 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 015 

SPECIFIED IN GE SPECIFICATION NO. DR 1100, TABLE 1 WITH THE FOLLOWING 

ADDITIONAL CONDITIONS. THE COMPONENT SHALL OPERATE DURING PORTIONS 

OF HANDLING, ASSEMBLY AND CHECKOUT AND PRE-LAUNCH AND DURING THE ON-ORBIT 

PHASE. 

A. VIBRATION - THIS COMPONENT WILL BE SUBJECTED TO VIBRATIONS 

IMPOSED ON TRUSS MOUNTED COMPONENTS. 

B. ACOUSTIC NOISE - THIS COMPONENT WILL BE SUBJECTED TO THE 

ACOUSTIC NOISE LEVELS IMPOSED ON INTERNAL COMPONENTS. 

3.1.2.5 TRANSPORTABILITY 

THE DESIGN OF THE COMPONENT AND ITS PACKAGING AND PACKING FOR 

SHIPMENT SHALL BE SUCH THAT THE COMPONENT SHALL MEET ALL PERFORMANCE 

REQUIREMENTS STATED IN SECTION 3.0 OF THIS SPECIFICATION AFTER THE PACKAGED 

COMPONENT IS SUBJECTED TO THE TRANSPORTATION ENVIRONMENTS DESCRIBED IN 

PARAGRAPH 3.1.2.4 OF THIS SPECIFICATION. 

THE PACKAGING SHALL BE ADEQUATE TO MAINTAIN THE SPECIFIED 

CLEANLINESS CONDITIONS OF THE COMPONENT UNDER THE SPECIFIED SHIPPING 

ENVIRONMENTS. CONTAINERS SHALL BEAR PRECAUTIONARY LABELS OR MARKINGS 

THAT ARE COMPATIBLE WITH THE SPECIFIED CLEANLINESS REQUIREMENTS. 

3.1.2.6 HUMAN PERFORMANCE 

NOT APPLICABLE 

3.1.2.7 SAFETY 

THIS COMPONENT SHALL FULFILL THE SAFETY REQUIREMENTS AS DESCRIBED 

IN MIL-S-38130 AND GE SPECIFICATION NO. DR1100, PARAGRAPH 3.1.3. 

3.1.2.7.1 FLIGHT SAFETY 

ALL RECOGNIZED CLASS III AND IV HAZARDS AND POTENTIAL HAZARDS, 

AS IDENTIFIED IN MIL-S-313130, PARAGRAPH 3.2.3 SHALL BE REPORTED TO THE 

GENERAL ELECTRIC COMPANY BY MEANS OF THE PRESCRIBED HAZARD REPORT. PARTS 

WHICH MAY WORK LOOSE IN SERVICE SHALL BE SAFETY WIRED OR SHALL HAVE OTHER 

Birr I A ! !NI nt 

I C.JI: 
"NIRO APPROVED FOR 

RELEASE 1 JULY 2015 

IT CRETSPECIAL HANDLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 016 

APPROVED LOCKING MEANS APPLIED. 

3.1.2.7.2 GROUND SAFETY 

SAME AS PARAGRAPH 3.1.2.7.1 OF THIS SPECIFICATION. 

3.1.2.7.3 NUCLEAR SAFETY 

NOT APPLICABLE 

3.1.2.7.4 PERSONNEL SAFETY 

THE DESIGN OF THIS COMPONENT SHALL GIVE PRIME CONSIDERATION 

TO THE MINIMIZATION OF HAZARD TO PERSONNEL. SAFETY METHODS SHALL BE 

EMPLOYED TO SATISFY THE REQUIREMENTS OF MIL-S-38130. THE DESIGN SHALL 

PROVIDE FAILSAFE FEATURES FOR SAFETY OF PERSONNEL DURING THE INSTALLATION, 

OPERATION. MAINTENANCE, AND REPAIR OR INTERCHANGING OF A COMPLETE 

EQUIPMENT ASSEMBLY OR COMPONENT. 

3.1.2.7.5 EXPLOSIVE AND/OR ORDNANCE SAFETY 

NOT APPLICABLE 

3.2 COMPONENT DEFINITION 

3.2.1 INTERFACE REQUIREMENTS 

THE IVS SHALL HAVE INTERFACES OF THE FOLLOWING NATURE WITH THE 

DESIGNATED SUBSYSTEMSA. ELECTRICAL 

POWER. INPUT SIGNALS, AND OUTPUT CONTROL AND 

MONITORING SIGNALS. 

B. MEC;4ANICAL 

CONSTRAINTS OF STRUCTURAL INTERFERENCE, VIBRATION 

GENERATION AND RESONANCE, STRUCTURAL MASS LOADINGS, 

ALIGNMENT. 

C. OPTICAL 

INPUT SIGNAL CONDITIONS. 

D. THERMAL 

SPECIAL HANDLING 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

ET SPECIAL HANDLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 017 

3.2.1.1 SCHEMATIC ARRANGEMENT 

SEE FIGURE 8. 

3.2.1.2 DETAILED INTERFACE DEFINITION 

3.2.1.2.1 NORMAL INPUT POWER CONDITIONS 

THIS COMPONENT SHALL BE CAPABLE OF FUNCTIONING WITHIN THE 

PERFORMANCE REQUIREMENTS OF THIS SPECIFICATION WHILE OPERATED WITH INPUT 

POWER HAVING THE FOLLOWING CHARACTERISTICS 

A. OPERATING VOLTAGE RANGE- BETWEEN PLUS 22.0 AND 31.0 VDC. 

B. VOLTAGE RIPPLE- 3.0 V RMS -DP1690, PARA. 4.2.4.2.2.1, 30 

HZ TO 150 KHZ APPLIES EXCEPT FOR RIPPLE LEVEL WHICH 

SHALL BE 3.0 V RMS INSTEAD OF 10% OF SUPPLY VOLTAGE-. 

C. OPERATING POWER- THE MAXIMUM POWER CONSUMED SHALL BE LESS 

THAN 50 WATTS PEAK EXCEPT FOR TRANSIENT AS DEFINED IN 

PARAGRAPH 3.2.1.2.1.D WITH 24 VOLTS INPUT DURING OPERATION 

INCLUDING WARM UP. 

THE MAXIMUM AVERAGE POWER CONSUMED SHALL BE LESS THAN 25 

WATTS WITH 24 VOLTS INPUT AND AVERAGED OVER A 20 MIN. 

OPERATING PERIOD PLUS A 3 MIN. WARM UP TIME. RELATIVELY 

CONSTANT POWER INPUT TO THE 1V5 IS PREFERRED OVER THE 

INPUT SUPPLY VOLTAGE PROFILE. WITH INPUT VOLTAGES HIGHER 

THAN 24 VOLTS, HIGHER POWER CONSUMPTION, PROPORTIONAL 

TO THE SQUARE OF THE RATIO OF ACTUAL TO NOMINAL INPUT 

VOLTAGE, CAN BE TOLERATED. 

D. TURN-ON POWER- THE MAXIMUM POWER SURGE DURING POWER TURNON SHALL BE LESS THAN 100 WATTS AND SHALL NOT EXCEED 

A 10 MILLISECOND DURATION. 

E. TRANSIENT LEVEL- POM 100 VOLTS -SEE DP 1690, 

PARAGRAPH 4.2.4.2.3, CONDUCTED TRANSIENT, FOR DETAILED 

DEFINITION-. 

F. TRANSIENT DURATION- SEE DP 1690, PARAGRAPH 4.2.5.4.4, 

CONDUCTED TRANSIENT SUSCEPTIBILITY, FOR DETAILED 

DEFINITION. 

-11eRET-SPECIAL HANDLING 
,)NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SECRET Sha...6t1, ihiANDLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 018 

3.2.1.2.2 ABNORMAL CONDITIONS 

THIS COMPONENT SHALL SURVIVE THE FOLLOWING CONDITIONS WITHOUT 

DAMAGE. 

A. UNDER AND OVER VOLTAGE — THIS COMPONENT SHALL WITHSTAND 

CONTINUOUS VOLTAGE FROM PLUS 20 TO 22 VDC AND FROM PLUS 

31 TO 33 VDC, AND SHALL GIVE SPECIFIED PERFORMANCE 

IMMEDIATELY UPON RETURN TO COMPONENT OPERATING VOLTAGE 

PER PARAGRAPH 3.2.1.2.1.A 

B. POWER INTERRUPT — THIS COMPONENT SHALL WITHSTAND A 

VOLTAGE RANGE FROM ZERO TO 20 VOLTS WHICH CAN LAST UP TO 

ONE SECOND AND SHALL GIVE SPECIFIED PERFORMANCE WITHIN 

FIVE SECONDS AFTER RETURN OF NORMAL OPERATING VOLTAGE. 

C. THE IVS SHALL NOT OUTPUT ANY SIGNAL WHICH WILL DAMAGE 

ANY OTHER EQUIPMENT OF THE ORBITING VEHICLE AS A RESULT 

OF CONDITIONS IN A AND B OF THIS PARAGRAPH. 

3.2.1.2.3 SENSOR OUTPUT CHANNELS 

THE INTERFACING LOAD IMPEDANCE TO THE IVS WILL BE 100K OHMS OR 

GREATER FOR EACH CHANNEL. A SCHEMATIC REPRESENTATION OF THE IVS INTERFACE 

IS SHOWN IN FIGURE 8. 

A. IMAGE VELOCITY SIGNAL OUTPUTS 

THE SENSOR SOURCE IMPEDANCES FOR THE X AND Y AMPLITUDE 

SIGNAL OUTPUT CHANNELS SHALL BE LESS THAN 50 OHMS. THE 

OUTPUT SIGNALS SHALL BE FROM ZERO TO 5 VOLTS AND SHALL BE 

LINEARLY PROPORTIONED TO IMAGE VELOCITIES OF ZERO TO POM 0.5 

IPS FOR EACH VELOCITY COMPONENT CHANNEL. SEE 

SECTION 3.1.1.1.1 FOR COMPLETE DESCRIPTION. 

B. LOCK—ON SIGNAL 

OUTPUT IMPEDANCE SHALL BE LESS THAN 2 K OHMS. WITH AN OUTPUT 

AS DESCRIBED IN PARA. 3.1.1.1.2 WHEN THE IVS HAS ESTABLISHED 

AN IMAGE VELOCITY SIGNAL OUTPUT WITHIN THE REQUIREMENTS 

st. 

SPECII !",INDLIN 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SECRET . . 

IDLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 019 

OF SECTION 3.1.1.1.1. 

C. READY SIGNAL 

OUTPUT IMPEDANCE SHALL BE LESS THAN 2 K OHMS, WITH AN 

OUTPUT AS DEFINED IN PARA. 3.1.1.1.3. 

D. DIAGNOSTIC SIGNALS 

OUTPUT IMPEDANCE FOR EACH DIAGNOSTIC SIGNAL SHALL BE LESS 

THAN 2K OHMS. 

E. CLOUD DETECTION SIGNAL 

CLOUD DETECTION SIGNAL SHALL BE LOGIC ONE IN THE PRESENCE 

OF CLOUDS, A LOGIC ZERO IN THE ABSENSE OF CLOUDS, AND THE 

OUTPUT IMPEDANCE SHALL BE LESS THAN 2K OHMS. 

F. SUB THRESHOLD SCENE LUMINANCE INDICATION 

SUB THRESHOLD SCENE LUMINANCE INDICATION SHALL BE 

LOGIC ONE WITH ACCEPTABLE SIGNAL LEVEL, A LOGIC ZERO FOR 

SUB THRESHOLD SIGNAL LEVEL, AND THE OUTPUT IMPEDANCE 

SHALL BE LESS THAN 2K OHMS. 

3.2.1.2.4 MOUNTING PROVISIONS 

THE IVS SENSOR HEAD SHALL BE MOUNTED AS SHOWN ON GE 

DRAWING 711-03013. ALTERNATE MOUNTINGS WILL BE CONSIDERED TO RESULT IN 

AN OPTIMAL MECHANICAL INTERFACE FOR A PARTICULAR SENSOR HEAD PACKAGE. 

A MAXIMUM WEIGHT AS DEFINED IN PARA. 3.3.1.2 SHALL BE 

SUPPORTED FROM THIS MOUNT AND SHALL BE HARD MOUNTED. 

3.2.1.2.5 OPTICAL INTERFACE 

GE WILL PROVIDE STANDARD SCENES WHICH REPRESENT THE TARGETS 

TO BE VIEWED AND WHICH HAVE THE FOLLOWING CHARACTERISTICS. THE IVS SHALL 

OPERATE WITHIN SPECIFICATIONS FOR THESE CHARACTERISTICS. 

A. IMAGE FORMAT- THE IVS WILL RECEIVE AN AERIAL IMAGE OF A 

RANDOM PATTERNED GROUND SCENE AS OBSERVED ABOVE THE 

ATMOSPHERE AND PROJECTED THROUGH AN OPTICAL SYSTEM AT AN 

IMAGE PLANE HAVING A CIRCULAR FORMAT WITH 2.8 INCH 

DIAMETER. 

SECRET sp7LP; utiw 
IRO APPROVED FOR 

A•ELEASE 1 JULY 2015 ikill)Litib 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 020 

B. RESIDUAL MOTIONS 

THE IVS SHALL PERFORM WITHIN SPECIFICATIONS IN THE 

PRESENCE OF OFFCENTER IMAGE RESIDUAL MOTIONS -IMAGE 

ROTATION, EXPLOSION AND/ORSHEARING-THAT RESULT FROM 

TRACKING GROUND SCENES FROM PLUS 30 DEGREES TO MINUS 40 

DEGREES IN STEREO, AT ALL OBLIQUITY ANGLES BETWEEN POM 40 

DEGREES. OBLIQUITY ANGLES ARE MEASURED FROM THE LOCAL 

VERTICAL. THE STEREO ANGLE 15 MEASURED IN THE PLANE 

CONTAINING THE LOS TO THE TARGET AND THE OBLIQUITY LOS, 

AND IS MEASURED WITH RESPECT TO THE OBLIQUITY LOS.. 

THE OPTICAL AXIS OF THE PAYLOAD PRIMARY OPTICAL SYSTEM IS 

ALIGNED TO THE LOCAL HORIZONTAL AND THE RELATIVE 

VELOCITY VECTOR -SUM OF ORBIT VELOCITY AND LOCAL SURFACE 

VELOCITY- WITHIN POM 5 DEGREES. 

C. FORMAT ILLUMINATION GRADIENT 

THE ILLUMINATION ACROSS THE IMAGE FORMAT WILL BE NEARLY 

UNIFORM. ILLUMINATION AT THE MAXIMUM RADIUS OF THE FORMAT 

WILL BE WITHIN 5% OF THE ILLUMINATION AT THE OPTICAL.AXIS. 

D. SCENE LUMINANCE AND RADIANCE 

THE IVS SHALL FUNCTION WITHIN SPECIFICATIONS AS AN IMAGE 

VELOCITY SENSOR FOR GROUND SCENE APPARENT AVERAGE 

LUMINANCE AS SHOWN IN FIG 9. PERFORMANCE TO SPECIFICATION 

WITHIN THE LIMITS OF CURVES 2 AND 3 FROM 5 DEGREES TO 

90 DEGREES SUN ANGLE IS A REQUIREMENT- PERFORMANCE WITHIN 

THE LIMITS OF CURVES 1 AND 3 IS A DESIGN GOAL. 

SINCE TYPICAL SENSORS HAVE SPECTRAL RESPONSES UNLIKE THAT OF THE 

HUMAN EYE, PHOTOMETRIC UNITS HAVE LIMITED VALUE IN DETERMINING THE IMAGE 

PLANE IRRADIANCE LEVELS. THE RANGE OF SCENE LUMINANCE AS GIVEN IN FIGURE 9 

MAY BE CONVERTED TO RADIOMETRIC UNITS BY ASSUMMING A SPECTRAL 

DISTRIBUTION APPROXIMATING THAT OF SUNLIGHT -5800 DEGREES K. BLACK BODY-. 

IN THIS CASE, THE VALUES OF SCENE LUMINANCE -FT. LAMBERTS- CAN BE CONVERTED 

TO SCENE RADIANCE, N -WATTS/M 

2

-SR. - BY USING THE LUMINOUS EFFICENCY OF 

SUNLIGHT, 98.7 LUMENS PER TOTAL RADIANT WATT AND THE APPROPRIATE AREA 

SECRET SPFP I VIA* LtritG 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 021 

FACTOR. SINCE THE OPTICAL ASSEMBLY TRANSMITTANCE -FIGURE 10- IS SPECIFIED 

ONLY FOR WAVE LENGTHS IN OR NEAR THE VISIBLE, A MORE USEFUL CONVERSION 

IS SCENE RADIANCE IN -EFFECTIVE- WATTS/M- SR. IN A SPECIFIC WAVELENGTH 

INTERVAL LIKE 0.4 TO 0.75 MICRONS. THE MINIMUM OF 150 FT LAMBERTS OF 

2 

FIGURE 9 AT 5 DEGREES SUN ANGLE IS EQUIVALENT TO 515 LUMENS/ M -SR. SINCE 

ABOUT 44% OF SUNLIGHT LIES IN THE 0.4 TO 0.75 MICRON BAND, THERE 

ARE 98.7/0.44 OR 224 LUMENS PER VISIBLE OR EFFECTIVE WATT. 

THEREFORE 5..5 LUMENS/M 2 -SR. IS EQUIVALENT TO 2.3 -EFFECTIVE- WATT/M 

2 

 -SR. 

TO OBTAIN USEFUL VALUES OF IMAGE PLANE IRRADIANCE, H -WATTS/el l - SPECTRAL 

'TRANSMITTANCE TA -INCLUDING VIGNETTING AND BLOCKAGE FACTORS- AND OPTICAL 

SPEED, F MUST BE APPLIED TO THE SCENE RADIANCE 

= 77-124 

THE MINIMUM IRRADIANCE LEVEL AT THE IVS SENSOR IMAGE PLANE, 

CORRESPONDING TO THE MINIMUM SCENE LUMINANCE OF 150 FT. LAMBERTS, IS 

3.54(10-‘) /TA d,. WATTS/CM 

z 

AS DISCUSSED IN SUBPARAGRAPH E. THE VALUE OF THIS INTEGRAL IS FOUND BY 

COMBINING THE TRANSMITTANCE VALUES OF FIGURE 10 WITH STEREO VIGNETTING 

FACTORS WHICH ARE AS LOW AS 0.326. 

THE SENSOR OUTPUT WILL DEPEND ON THE INTEGRATED EFFECT OF ITS 

PARTICULAR SPECTRAL RESPONSE AND THIS SPECTRAL TRANSMITTANCE FACTOR IN 

THE EXPRESSION FOR IMAGE PLANE IRRADIANCE ABOVE 

5=1-IR?, HA o 

WHERE RX IS RESPONSIVITY OF SENSOR - VOLTS/WATT/CM 2 - 

THEREFORE NO MEANINGFUL MINIMUM IVS IMAGE PLANE IRRADIANCE LEVEL CAN BE 

GIVEN BY A SINGLE VALUE. 

FOR PURPOSES OF COMPARISON WITH THE RESPONSE OF THE EYE, THE 

MINIMUM VALUE OF IVS IMAGE PLANE ILLUMINANCE FOR A STEREO ANGLE OF 

PLUS 30 DEGREES -WORST CASE- IS APPROXIMATELY 0.0062 FT. CANDLES 

E. TRANSMITTANCE 

sang spr.r I 

11 DU atY 

7 
NRO APPROVED FOR 

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12/04/67 PAGE 022 

*.1 ■ &... LI.JUNG 

THE TRANSMITTANCE TO THE IMAGE PLANE WILL BE AS SHOWN 

IN FIGURE 10, CURVE 1. 

THE TRANSMITTANCE IS REDUCED BY THE EFFECTS OF TRACKING 

MIRROR APERTURE VARIATION WITH STEREO -PITCH- ANGLE. THE 

REDUCED TRANSMITTANCE RANGE 15 32.6% TO 72.9% OF THE ABOVE 

VALUES FOR STEREO RANGE FROM PLUS 30 DEGREES TO MINUS 40 

DEGREES. THE TRANSMITTANCE IN FIGURE 10 INCLUDES EFFECTS 

OF THE FOLLOWING FACTORS-- 

1-GLASS TRANSMITTANCE 

2-GLASS SURFACE REFLECTANCE 

3-MIRROR REFLECTANCE 

4-MAIN PELLICLE REFLECTANCE 

5-SECONDARY PELLICLE REFLECTANCE 

THE IVS SHALL PERFORM IN ACCORDANCE WITH THE REQUIREMENTS 

OF THIS SPECIFICATION FOR THE TRANSMITTANCE VALUES SHOWN 

IN FIGURE 109 CURVE I. WITH CHANGES IN THE PRESENT DESIGN 

BASELINE* THE TRANSMITTANCE MAY BE INCREASED TO THE VALUES 

SHOWN IN FIGURE 109 CURVE 2 AS A MAXIMUM. HOWEVER, 

CHANGES IN THE BASELINE COULD RESULT IN SIGNIFICANT 

PENALTIES TO THE MISSION. IT WILL BE CONSIDERED A 

DEVIATION FROM THIS SPECIFICATION IF THE IVS REQUIRES 

TRANSMITTANCE VALUES HIGHER THAN CURVE 19 THE HIGHER THE 

REQUIRED TRANSMITTANCE, THE GREATER THE DEVIATION. 

F. PRIMARY OPTICAL SYSTEM CHARACTERISTICS 

THE OPTICAL SYSTEM WILL HAVE A FOCAL LENGTH OF 

AND A FOCAL RATIO -RELATIVE APERTURE- OF 

OBSCURATION WILL BE 12.7% -AREA-, FOR AN APPROXIMATELY 

CIRCULAR CENTRAL OBSTRUCTION. 

-THIS OBSCURATION IS FACTORED INTO THE REDUCED 

TRANSMITTANCE OF SECTION EG. IMAGE CONTRAST THE INPUT IMAGE-PLANE SCENE WILL HAVE AN 

AVERAGE ILLUMINATION AND A RANGE OF MODULATIONS OVER A 

RANGE OF TWO DIMENSIONAL SPATIAL FREQUENCIES. THESE ARE 

SPECIAL .HANDLINg6 

SPECIFICATION NO. EC-701A REV 5 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

JAI ii)I.! 

SPECIFICATION NO. EC-701A REV 5 12/04/67PAGE 023 

DESCRIBED BY A TWO DIMENSIONAL WIENER SPECTRUM OF THE FORM 

W. WHERE 

W = (FOOT LAMBERT)/(YCLE PER FOOT) 4- 

K.' WIENER SPECTRUM LEVEL — FOOT LAMBERTS 2/(CYCLE 

1 PER FOOT) 2 

d" --r. SPATIAL FREQUENCY — CYCLES PER FOOT 

6) 46-ORTHOGONAL COMPONENTS OF 

THE 

- 

THE RANGE OF VALUES FOR THESE PARAMETERS ARE DEFINED TO 

BE THE FOLLOWING 

K — FUNCTION OF SUN ANGLE PER FIGURE 11 

4X10 < 

-I a 0.19 CYCLE PER FOOT 

0.1 M 0.7 

IN ALL CASES THERE MAY BE LOCAL AREAS OF HIGH 

ILLUMINATION DUE TO SPECULAR REFLECTIONS. THE IVS SHALL 

NOT BE DAMAGED BY INTERVALS OF HIGH ILLUMINATION UP TO 

309000 FOOT LAMBERTS APPARENT SCENE LUMINANCE. 

H. IMAGE VELOCITY FREQUENCY CONTENT 

THE INPUT IMAGE MAY INCLUDE VIBRATION WITH VARIOUS 

RANDOM FREQUENCIES TO 200 RAD/SEC. 

I. IMAGE PLANE 

THE IMAGE PLANE FOR THE IVS WILL VARY WITH THE SLANT RANGE 

TO TARGET. THE NOMINAL IMAGE PLANE LOCATION WILL BE 4.9 

INCHES FOR THE REFERENCE AS SHOWN ON DRAWING 711-03013 

THE IMAGE PLANE WILL SHIFT A TOTAL OF 

APPROXIMATELY 0.041 INCHES, FOR AN ALTITUDE RANGE 

OF 70 TO 230 N MILES, WITH LINE—OF—SIGHT STEREO ANGLE 

RANGE OF PLUS 30 DEGREES TO MINUS 40 DEGREES AND OBLIQUITY 

ANGLE RANGE OF PLUS 40 DEGREES TO MINUS 40 DEGREES. 

J. MODULATION 

RELATIVE MODULATION FOR DEFOCUSED CONDITIONS WILL 

BE AS DEFINED IN FIGURES 12 AND 13. 

3.2.1.2.6 THERMAL INTERFACE 

-SECRETSPECVil _INC 
0NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 

Lfi 

12/04/67 PAGE 024 

IT SHALL BE A DESIGN GOAL THAT A MINIMUM OF 90% OF THE TOTAL 

STEADY-STATE ELECTRONICS BOX HEAT DISSIPATION BE TRANSMITTED INTO A COLD 

PLATE IN THE CONSOLE ENVELOPE REF. DWG. 711-03013. THE HEAT WILL BE 

REMOVED FROM THE COLD PLATE BY FLUID TRANSFER. POWER DISSIPATION AT THE 

SENSOR HEAD SHALL BE HELD TO AN ABSOLUTE MINIMUM WITH A DESIGN GOAL OF 3 

WATTS MAX. REFERENCE DR1100 FOR THERMAL ENVIRONMENT THAT THE COMPONENT 

MUST ACCEPT. 

3.2.2 COMPONENT IDENTIFICATION 

NOT APPLICABLE. 

---ZGRETSPEGA. \IL 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 025 

-44%14+ 

3.3 DESIGN AND CONSTRUCTION 

3.3.1 GENERAL DESIGN FEATURES 

THIS COMPONENT IS SHOWN ON GE DRAWING 711-03013 AND IN FIGURE 14 

OF THIS SPEC. THE GENERAL DESIGN FEATURES ARE AS SPECIFIED IN THE 

SUB-PARAGRAPHS LISTED BELOW. 

3.3.1.1 OVERALL DIMENSIONS 

THE MAXIMUM DIMENSIONS FOR PACKAGING AND MOUNTING THE IVS HEAD 

SHALL BE CONSISTENT WITH THE SPACE ENVELOPE DEFINED BY SECTION 3.2.1.2.4 

THE COMBINED PACKAGING OF THE SENSOR HEAD TOGETHER WITH ALL OTHER 

IVS ELEMENTS WHICH ARE SUPPORTED AT THE. IMAGE INTERFACE AND MOUNTED WITHIN 

THE ENVELOPE DEFINED BY DRAWING 711-03013 HAS NOMINAL DIMENSION OF 10 

INCHES X 10 INCHES X 8 INCHES. IVS ELEMENTS WHICH ARE MOUNTED IN THE 

CONSOLE TRAY SHALL HAVE MAXIMUM DIMENSIONS OF 6 INCHES X 6 INCHES X 6 

INCHES. REFER TO FIGURE 14 FOR ELECTRONICS PACKAGE DEFINITION. 

3.3.1.2 WEIGHT 

THE MAXIMUM WEIGHT FOR THE IVS SHALL BE 22 POUNDS TOTAL, EXCLUSIVE 

OF INTERCONNECTING CABLING. 

3.3.1.3 PACKAGING ENVELOPES 

THE IVS HEAD SHALL BE PACKAGED FOR INSTALLATION IN THE LAB. 

MODULE WITHIN THE MOUNTING ENVELOPE DEFINED By DWG. 711-03013. 

REMAINING ELEMENTS SHALL BE LOCATED IN A CONSOLE ENVELOPE WHICH IS . 

ALSO LOCATED IN THE LABORATORY MODULE. THE IVS HEAD SHALL BE CONNECTED 

TO THE IVS ELECTRONICS BOX By A SINGLE MULTI-CONDUCTOR CABLE. FOR THE 

MISSION EQUIPMENT, THIS CABLE WILL BE SUPPLIED BY THE GENERAL ELECTRICAL 

COMPANY. THE VENDOR SHALL SUPPLY A TEN FOOT LONG INTERCONNECTING CABLE 

WITH THE IVS FOR TEST AND CHECKOUT PURPOSES, AND SHALL SUPPLY ELECTRICAL 

SPECIFICATIONS AND OTHER SPECIAL PROVISIONS THAT WILL BE NEEDED TO 

FABRICATE THE ACTUAL MISSION CABLING. 

ALL CONNECTORS SHALL BE IN ACCORDANCE WITH DR 1110A WITH BENDIX 

TYPE JT CONNECTORS THE PREFERRED TYPE. 
NRO APPROVED FOR ('`Cf T 

-RELEASE 1 JULY 2015 { 

SPECIFICATION NO. EC-701A REV 5 

t. 1 a POWL-iik 

12/04/67 PAGE 026 

THREE SEPARATE CONNECTORS SHALL BE USED ON THE ELECTRONICS BOX 

FOR POWER INPUT, SIGNAL INPUTS/OUTPUTS, AND INTERCONNECTING TO THE IVS 

HEAD. THE LOCATION OF ELEMENTS OF THE IVS SHALL BE IN ACCORDANCE WITH 

THERMAL, MECHANICAL AND FUNCTIONAL REQUIREMENTS AS DEFINED BY THIS 

SPECIFICATION. 

3.3.1.4 COMPONENT SEAL 

THE INTERFACE BETWEEN THE SENSOR HEAD ASSEMBLY AND THE MOUNTING 

SURFACE SHALL CONTAIN A SEAL TO PREVENT TRANSMISSION OF STRAY LIGHT AND 

PARTICLES OF 55 MICRON SIZE OR LARGER. 

THE SENSOR HEAD ASSEMBLY AND ELECTRONICS ASSEMBLY SHALL HAVE 

SEALING AS REQUIRED FOR OPERATION WITHIN THE HELIUM ENVIRONMENT 

SPECIFIED IN DR1100 AND TO PREVENT CORONA FORMATION WHEN POWER IS 

APPLIED IMMEDIATELY FOLLOWING EXPOSURE TO VACUUM. 

3.3.2 SELECTION OF SPECIFICATIONS AND STANDARDS. 

THE ORDER OF PRECEDENCE FOR THE SELECTION OF SPECIFICATIONS AND 

STANDARDS SHALL BE IN ACCORDANCE WITH MIL—STD-143. ONLY THOSE MILITARY 

DOCUMENTS LISTED IN ANA BULLETIN 400 AND/OR DOD INDEX OF SPECIFICATIONS 

AND STANDARDS SHALL BE INTERPRETED AS BEING GROUP 1 DOCUMENTS AS DEFINED 

IN MIL—STD-143. THE USE OF STANDARDS AND SPECIFICATIONS OTHER THAN THOSE 

LISTED OR REFERRED TO BY THOSE LISTED IN SECTION 2 HEREIN, SHALL REQUIRE 

PRIOR APPROVAL OF THE GENERAL ELECTRIC COMPANY. ANY MIL—STD-143 GROUP II 

THROUGH V DOCUMENTS SELECTED FOR USE SHALL AUTOMATICALLY NECESSITATE THE 

PREPARATION OF A SPECIFICATION CONTROL DRAWING WHICH SHALL BE SO DRAFTED AS 

TO ESTABLISH THE SPECIFIC DOCUMENT BEING REFERENCED, ITS DATE OF ISSUE AND 

CONTROL RESPONSIBILITY FOR ITS USE. 

3.3.3 MATERIALS, PARTS AND PROCESSES 

MICROELECTRONIC ELEMENTS SHALL BE USED IN ELECTRONICS CIRCUITRY 

WHEREVER THEIR USAGE IS REASONABLE FOR THE PARTICULAR APPLICATION. IN 

THOSE INSTANCES WHERE IT CAN BE SHOWN TO THE SATISFACTION OF THE GENERAL 

ELECTRIC COMPANY THAT THE USE OF MICRO—ELECTRONIC CIRCUITRY 15 NOT 

SiXfirismrifil "• A ro, r)t 

0-1 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

--SECREF SI 't -. Li ,DLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 027 

FEASIBLE, THEN DISCRETE PARTS MAY BE USED. THESE ELEMENTS AND/OR PARTS 

SHALL BE IN ACCORDANCE WITH GE SPECIFICATION NO. DR 1110 -SELECTED AVE 

PARTS LIST-. IN THE EVENT THEY DO NOT APPEAR IN DR1110 DATA SHALL BE 

FURNISHED IN ACCORDANCE WITH REQUIREMENTS OF DR1110 FOR THEIR SUBSEQUENT 

INCLUSION. 

WHERE DISCRETE PARTS ARE USED, MODULAR PACKAGING OF THESE PARTS 

SHALL BE USED WHEREVER PRACTICABLE. THE MODULAR PACKAGING TECHNIQUES TO BE 

EMPLOYED SHALL BE SIMILAR TO THOSE DESCRIBED IN GE SPECIFICATION S-30000• 

5-30001 AND S-30002 -EXCLUDING LOWER TIER REFERENCES- OR THEY SHALL BE IN 

ACCORDANCE WITH TECHNIQUES EMPLOYED BY THE VENDOR - ALL SUBJECT TO GE 

APPROVAL. 

OTHER MATERIALS, PARTS AND PROCESSES SHALL BE IN ACCORDANCE WITH GE 

SPECIFICATIONS NO. DR 1100, DR 11129 DR 11139 DR 1115 AND NON-CONFLICTING 

PORTIONS OF MIL-E-25366 AND MIL-E-5400. 

IN THE CASE OF THE USE OF EQUIPMENT BUILT TO A DESIGN PREVIOUSLY 

ACCEPTED BY THE GOVERNMENT, IT WILL NOT BE NECESSARY TO CHANGE THE DESIGN 

TO USE ONLY PARTS THAT ARE ON THE MOL SELECTED PARTS LISTS PROVIDED THAT 

A. EVIDENCE OF PRIOR ACCEPTANCE OF THE EQUIPMENT IS SUBMITTED. 

B. PRIOR APPLICATION-S- INCLUDED DEMONSTRATED CAPABILITY IN 

EQUIVALENT OR MORE SEVERE ENVIRONMENTS THAN SPECIFIED IN 

PARAGRAPH 3.1.2.4 HEREIN. 

3.3.4 STANDARD AND COMMERCIAL PARTS 

FOR OTHER THAN ELECTRONIC OR ELECTRICAL PARTS MAXIMUM USE SHALL BE 

MADE OF COMMERCIALLY AVAILABLE STANDARD MIL, AN AND MS PARTS. 

IF IT BECOMES NECESSARY TO USE COMMERCIAL PARTS OTHER THAN THOSE 

LISTED AS STANDARD, A LIST SHALL BE SUBMITTED TO THE GENERAL ELECTRIC 

COMPANY IDENTIFYING EACH PART BY NAME, CATALOG NUMBER, NUMBER OF PARTS 

REQUIRED, MANUFACTURER/S NAME AND EQUIVALENT APPROVED GOVERNMENT SPECIFICATION -IF AVAILABLE- WHICH CAN BE SUBSTITUTED FOR THE COMMERCIAL PART. 

THE REASON AND SUBSTANTIATION FOR THE USE OF THE COMMERCIAL OR NONSTANDARD 

ITEM SHALL ALSO BE SUBMITTED. 

-SESEESPECIAL HANDLING 
NRO APPROVED FOR V -RELEASE 1 JULY 2015 

-SECRET-, 

DIP" 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 028 

3.3.5 MOISTURE AND FUNGUS RESISTANCE 

THIS COMPONENT SHALL CONFORM TO THE REQUIREMENTS OF MIL-STD-454, 

REQUIREMENT 4. WHENEVER PRACTICABLE' MATERIALS AND PROCEDURES WHICH HAVE 

DEMONSTRATED THE CAPABILITY OF BEING IMPERVIOUS TO MOISTURE AND FUNGUS 

SHALL BE SELECTED. PROTECTIVE COATINGS WILL NOT BE ACCEPTABLE AS MOISTURE 

AND FUNGUS PREVENTATIVES ON PARTS WHICH WILL LOSE THE COATINGS DURING THE 

NORMAL COURSE OF MANUFACTURE, ASSEMBLY, AND TEST. 

3.3.6 CORROSION OF METAL PARTS 

3.3.6.1 ELECTROLYTIC CORROSION 

USE OF DISSIMILAR METALS IN DIRECT CONTACT WITH EACH OTHER SHALL 

BE AVOIDED AS PER THE REQUIREMENTS OF MIL-E-5400, PARAGRAPH 3.1.8.1, AND 

MS 33586 UNLESS SUITABLY PROTECTED BY PLATING, PAINTING OR OTHER SURFACE 

TREATMENT. METAL SPRAYING OR PLATING OF DISSIMILAR METALS TO PROVIDE 

SUITABLE MATING SURFACES OR SEPARATION BY SUITABLE INSULATING MATERIAL 

IS PERMISSABLE. 

3.3.6.2 STRESS CORROSION 

METALS. TECHNIQUES, AND PROCESSES SHALL BE SELECTED AND EMPLOYED 

WITH REGARD TO HEAT TREATMENT PROCEDURES, CORROSION PROTECTION, FINISH, 

ASSEMBLY AND INSTALLATION, SO THE SUSTAINED OR RESIDUAL SURFACE TENSILE 

STRESSES, STRESS CONCENTRATIONS AND THE HAZARDS OF STRESS CORROSION, 

CRACKING AND HYDROGEN EMBRITTLEMENT ARE MINIMIZED. 

3.3.6.3 PROTECTIVE METHODS 

METHODS AND MATERIALS FOR CLEANING, SURFACE TREATMENT, AND 

APPLICATION OF FINISHES AND PROTECTIVE COATINGS SHALL BE IN ACCORDANCE WITH 

DR 1100, PARAGRAPH 3.2.6.3, PROTECTIVE TREATMENT. 

3.3.7 INTERCHANGEABILITY AND REPLACEABILITY 

EACH PART, SUBASSEMBLY, OR ASSEMBLY BEARING A PARTICULAR SUPPLIER S 

• PART NUMBER SHALL BE COMPLETELY INTERCHANGEABLE WITH ALL OTHER PARTS, SUBASSEMBLIES, OR ASSEMBLIES BEARING THE SAME NUMBER. THE REQUIREMENT OF MILEC[ dCiIVG 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 SECRET L•1/4,1• I ■;ULING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 029 

STD-454, REQUIREMENT 7, SHALL APPLY. 

3.3.8 WORKMANSHIP 

THIS COMPONENT, INCLUDING ALL PARTS AND ASSEMBLIES, SHALL BE 

CONSTRUCTED AND FINISHED IN ACCORDANCE WITH MIL-STD-454, REQUIREMENT 9. 

3.3.9 ELECTROMAGNETIC INTERFERENCE 

THIS COMPONENT SHALL CONFORM TO THE REQUIREMENTS OF GE SPECIFICATION 

NO. DP 1690. 

. 3.3.10 IDENTIFICATION AND MARKING 

IDENTIFICATION AND MARKING SHALL BE IN ACCORDANCE WITH MIL-E-5400, 

PARAGRAPH 3.1.19, MIL-STD-130, AND SSD 61-70. SELECTED COLORS SHALL BE IN 

ACCORDANCE WITH FED-STD-595 AND MIL-STD-795. 

3.3.11 STORAGE 

THIS COMPONENT SHALL BE CAPABLE OF PERFORMANCE PER PARAGRAPH 3.1 

AFTER THREE -3- YEARS STORAGE, IN AN ENVIRONMENT AS DEFINED IN PARAGRAPH 3.1.2.4 OF THIS SPECIFICATION. 

3.3.12 CLEANLINESS 

THIS COMPONENT SHALL BE ASSEMBLED IN A CLEAN AREA WHICH MEETS THE 

REQUIREMENTS OF FED STD 209, CLASS 10,000, OR IT SHALL BE CAPABLE OF 

BEING CLEANED AFTER ASSEMBLY FOR USE IN SUCH AN AREA. 

THERE SHALL BE NO EVIDENCE -OR FLUORESCENCE- OF OILS OR VOLATILE 

CONTAMINATION WHEN SURFACES ARE EXAMINED EITHER VISUALLY OR BY ULTRA 

VIOLET LIGHT. 

3.3.13 VIBRATION 

3.3.13.1 SENSOR GENERATED VIBRATION 

THE MAXIMUM EXCITATION DURING FRAME EXPOSURE TIMES WHICH THE IVS 

SHALL GENERATE IS 3.0 INCH- OZ. ABOUT ANY AXIS AND 0.01 POUNDS AXIAL FORCE 

ALONG ANY AXIS MEASURED AT THE IVS MOUNT. DURING SLEW TIMES, TWICE THE 

WIC spEC 
NRO APPROVED FOR 

JRELEASE 1 JULY 2015 

--SEGREFSPECIP_ 11ANDLING 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 030 

FOREGOING VALUES WILL BE PERMITTED. 

3.3.13.2 RESONANCE 

THE IVS SHALL BE DESIGNED TO HAVE STRUCTURAL ELEMENTS WITH 

NATURAL FREQUENCIES IN EXCESS OF 50 CPS. EFFECTS OF INTERNAL RESONANCES 

ON IVS OUTPUT SHALL BE INCLUDED IN THE PRIMARY PERFORMANCE REQUIREMENTS 

DESCRIBED IN PARAGRAPH 3.1.1.1. 

3.3.14 SENSOR GENERATED NOISE -ACOUSTICPER SAFSL 10003 PAGE 21 

-5EWSPECIAL.TANDIVNG 
NRO APPROVED FOR 

_ RELEASE 1 JULY 2015 

-sEeREF-S[)Eiit. 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 031 

4.0 QUALITY ASSURANCE PROVISIONS 

4.1 CATEGORY I TEST 

4.1.1 ENGINEERING TEST AND EVALUATION 

THIS COMPONENT SHALL BE SUBJECTED TO SUCH TESTS AS ARE NECESSARY 

TO PROVIDE DATA, NOT OBTAINABLE BY OTHER TESTING SPECIFIED HEREIN. TO 

VERIFY CONFORMANCE WITH THE REQUIREMENTS OF SECTION 3. 

4.1.2 PRELIMINARY QUALIFICATION TESTS 

NOT APPLICABLE 

4.1.3 FORMAL QUALIFICATION TESTS 

TWO COMPONENTS OF A NEW DESIGN SHALL BE SUBJECTED TO THE TESTS 

DEFINED HEREIN. 

4.1.3.1 INSPECTION 

THE FOLLOWING REQUIREMENTS OF SECTION 3 SHALL BE VERIFIED BY 

INSPECTION OF THIS COMPONENT AT TIME AND PLACE OF TESTING PRIOR TO THE 

START OF QUALIFICATION TESTING. 

3.1.1.1.5 ALIGNMENT 

3.3.1 GENERAL DESIGN FEATURES 

3.3.3 MATERIALS, PARTS AND PROCESSES 

3.3.4 STANDARD AND COMMERCIAL PARTS 

3.3.7 INTERCHANGEABILITY & REPLACEABILITY 

3.3.8 WORKMANSHIP 

3.3.10 IDENTIFICATION AND MARKING 

3.3.12 CLEANLINESS 

4.1.3.2 ANALYSES 

THE FOLLOWING REQUIREMENTS OF SECTION 3 SHALL BE VERIFIED BY 

REVIEW OF ANALYTICAL DATA AT THE CONCLUSION OF ENVIRONMENTAL TESTING. 

3.1.2.1 RELIABILITY 

3.1.2.2 MAINTAINABILITY 

3.1.2.3 USEFUL LIFE 

SEQRTT SPECS 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 032 

ol LW/ I I/ ti 

3.1.2.7 SAFETY 

3.2.1 INTERFACE REQUIREMENTS 

3.3.2 SELECTION OF SPECIFICATION & STANDARDS 

3.3.5 MOISTURE AND FUNGUS RESISTANCE 

3.3.6 CORROSION OF METAL PARTS 

3.3.11 STORAGE 

4.1.3.3 DEMONSTRATIONS 

NOT APPLICABLE. 

4.1.3.4 TEST 

4.1.3.4.1 TEST CONDITIONS AND PROCEDURES 

THE TEST CONDITIONS AND PROCEDURES FOR THIS COMPONENT SHALL 

CONFORM TO THE REQUIREMENTS OF GE SPECIFICATION NO. DR 1100 PARAGRAPHS 

3.3 -TESTS- AND 4.2 -TEST CONDITIONS- FOR COMPONENTS INTERNALLY TRUSS 

MOUNTED IN ZONE 2. 

4.1.3.4.2 DESIGN/PERFORMANCE VERIFICATION TESTS 

THE FOLLOWING REQUIREMENTS OF SECTION 3 SHALL BE VERIFIED 

DURING THE FORMAL QUALIFICATION TEST PROGRAM AS SPECIFIED IN SUBSEQUENT 

PARAGRAPHS HEREIN 

3.1.1.1 PRIMARY PERFORMANCE CHARACTERISTICS 

3.1.1.2 SECONDARY PERFORMANCE CHARACTERISTICS 

3.1.2.3 USEFUL LIFE 

3.1.2.4 ENVIRONMENTAL 

3.1.2.5 TRANSPORTABILITY 

3.2.1.2.2 ABNORMAL CONDITIONS 

3.3.9 ELECTROMAGNETIC INTERFERENCE 

3.3.13 VIBRATION 

3.3.14 SENSOR GENERATED NOISE 

--SERETPECIA 1 141\1 Ifin! 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 033 

6r LA, UAL i LUNG 

4.1.3.4.3 PRELIMINARY PERFORMANCE TESTS 

4.1.3.4.3.1 DIELECTRIC STRENGTH AND INSULATION RESISTANCE 

THE COMPONENT SHALL BE TESTED FOR DIELECTRIC STRENGTH AND 

INSULATION RESISTANCE PER PARAGRAPH 4.3.1.2 OF GE SPECIFICATION NO DR. 1100 

4.1.3.4.3.2 CONTINUITY TEST 

PRIOR TO THE APPLICATION OF POWER, A CONTINUITY TEST SHALL BE 

PERFORMED ON THIS COMPONENT TO PRECLUDE THE POSSIBILITY OF EQUIPMENT 

MALFUNCTION OCCURING AS A RESULT OF MANUFACTURING DEFECTS. CARE SHALL BE 

EXERCISED IN THE SELECTION OF TEST EQUIPMENT USED FOR THIS TEST SO THAT 

THERE IS NO POSSIBILITY OF DAMAGING INTERNAL CIRCUITS OF THE IVS. 

4.1.3.4.3.3 PERFORMANCE TEST 

SUITABLE TESTS WILL BE DESIGNED AND PERFORMED ON A GE IVS 

TESTER DELINEATED BY SPECIFICATION TR951 TO VERIFY PERFORMANCE COMPLIANCE 

WITH THE REQUIREMENTS SPECIFIED IN PARAGRAPHS 3.1.1.1 AND 3.1.1.2 OF THIS 

SPECIFICATION. THE FOLLOWING TESTS SHALL BE INCLUDED AS A PART OF THE 

PERFORMANCE TEST. 

A. STATIC RANGE 

THE IVS SHALL BE SUBJECTED TO IMAGE PLANE VELOCITIES 

FROM ZERO TO BEYOND 0.3 INCH PER SECOND IN A NUMBER OF 

ARBITRARY DIRECTIONS TO DETERMINE THE SATURATED RESPONSE 

THRESHOLD PROFILE AS A DEMONSTRATION OF ITS RANGE 

OF PROPORTIONAL RESPONSE. 

B. LINEARITY - KNOWN IMAGE VELOCITIES SHALL BE IMPUTTED TO 

THE IVS TO DETERMINE LINEARITY OF RESPONSE. THE RANGE OF 

VALUES SHALL BE FROM ZERO IPS THROUGH 0.3 IPS IN 

SUFFICIENTLY SMALL INCREMENTS TO VERIFY THAT THE IVS 

PERFORMANCE IS WITHIN TOLERANCE AS SPECIFIED BY FIGURE 1A. 

THE OUTPUT SIGNAL SHALL BE PERMITTED TO STABILIZE AFTER 

THE INSERTION OF EACH TEST VELOCITY POINT BEFORE IT IS 

READ AND RECORDED. THE OUTPUT SHALL, IN EACH CASE, BE 

RECORDED WITH AND WITHOUT THE INCLUSION OF A 0.01 CPS 

PEP" " 1 1,0 , 

4,04W4 
a 

NRO APPROVED FOR 

0 RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 034 

t-. o • 

FIllE1611tV46C14144- 6F' THE IMAGE VELOCITY SHALL BE 

REVERSED FOR ONE TEST CASE. AND THIS VELOCITY SHALL NOT BE 

ALIGNED WITH EITHER AXIS OF THE SENSOR. 

A CURVE RELATING THE TRUE VELOCITY TO THE INDICATED 

VELOCITY SHALL BE CONSTRUCTED AND COMPARED TO THAT 

SPECIFIED IN FIGURE 1. 

C. SATURATION CHARACTERISTICS 

SATURATING IMAGE VELOCITIES OF VARIOUS DURATIONS SHALL 

BE PROVIDED TO THE IVS AND THE OUTPUT MONITORED TO 

DEMONSTRATE COMPLIANCE WITH THIS SPECIFICATION. 

D. FREQUENCY RESPONSE 

A FREQUENCY RESPONSE TEST SHALL BE CONDUCTED ON THE IVS 

WITH THE GAIN AND PHASE RELATIONSHIPS BETWEEN THE INPUT 

IMAGE VELOCITY AND THE INDICATED VELOCITY PLOTTED VERSUS 

FREQUENCY. THE INPUT VELOCITIES SHALL COVER THE RANGE 

0.0125 IPS —25 MICRO RAD/SEC.— TO .25 IPS —500 MICRO 

RAD/SEC.— FOR THE FREQUENCY RANGE INDICATED IN FIG 7. 

E. NULL ACCURACY 

THE IVS SHALL BE PROVIDED WITH INPUT IMAGE VELOCITIES 

FROM ZERO TO 0.02 IPS —40 MICRO RAD/SEC.— FROM 

VARIOUS DIRECTIONS. THE OUTPUT RECORD SHALL BE 

ANALYZED TO DETERMINE THE ERROR BIAS AND THE NOISE POWER 

SPECTRAL DENSITY. 

F. POWER INTERRUPT 

THE IVS SHALL BE REQUIRED TO DEMONSTRATE THE ABILITY 

TO RETURN TO SPECIFIED PERFORMANCE AFTER THE EXPOSURE TO 

ABNORMAL VOLTAGE CONDITIONS DESCRIBED IN PARA 3.2.1.2.2—A. 

THE DEMONSTRATION OF POWER INTERRUPT DOES NOT REQUIRE THE 

SUPERPOSITION OF EMI —RIPPLE AND TRANSIENT— REQUIREMENTS 

BUT DOES REQUIRE THE DEMONSTRATION OF SPECIFIED 

PERFORMANCE AT A LOW LINE VOLTAGE OF 22 VOLTS AND THE 

SUPERPOSITION OF THE EMI REQUIREMENTS PER DP 16909 DURING 

EMI TESTING WITHOUT INDICATING A POWER INTERRUPT 

Argalir • -SHOAL.-MI L_! 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

SPECIFICATION NO. EC-701A REV 5 2/04/67 PAGE 035 

tl V41)11146 

CONDITION. 

4.1.3.4.4 OPERABILITY ASSURANCE TESTS 

THE COMPONENT SHALL BE TESTED TO THE REQUIREMENTS 

SPECIFIED IN PARAGRAPH 4.3.2 OF DR 1100. THE PERFORMANCE TEST SHALL 

CONSIST OF PARAGRAPH 4.1.3.4.3.3 OF THIS SPECIFICATION. 

4.1.3.4.5 QUALIFICATION ENVIRONMENTAL TESTS 

THESE TESTS SHALL BE PERFORMED IN ACCORDANCE WITH PARAGRAPH 4.4 

OF DR 1100. THE PERFORMANCE TEST SHALL CONSIST OF PARAGRAPH 4.1.3.4.3.3 OF 

THIS SPECIFICATION. 

A. ACCELERATION PARAGRAPH 4.4.3.4 OF DR 1100 APPLIES EXCEPT 

THAT REFERENCE TO PHASE C COMPONENTS DOES NOT APPLY. THE 

COMPONENT SHALL NOT BE REQUIRED TO OPERATE DURING THIS TEST, 

HOWEVER, POWER VOLTAGES SHALL BE APPLIED AND MONITORED. 

B. VIBRATION PARAGRAPH 4.4.3.5 OF DR 1100 APPLIES. 

C. SHOCK TESTS PARAGRAPHS 4.4.3.6, 4.4.3.6.1. 4.4.3.6.2, 

AND 4.4.3.6.3 APPLY. 

D. ACOUSTIC NOISE PARAGRAPH 4.4.3.7 AND 4.4.3.7.1 APPLY. 

E. TEMPERATURE CYCLING PARAGRAPH 4.4.3.1 APPLIES. 

F. THERMAL ALTITUDE PARAGRAPH 4.4.3.2 APPLIES. 

G. OXYGEN COMPATIBILITY PARAGRAPH 4.4.3.15 APPLIES. 

H. HELIUM COMPATIBILITY PARAGRAPH 4.4.3.15 APPLIES. 

I. HUMIDITY PARAGRAPH 4.4.3.8 APPLIES. 

J. ELECTROMAGNETIC COMPATIBILITY PARAGRAPH 4.4.3.12 APPLIES. 

K. FUNGUS PARAGRAPH 4.4.3.9 APPLIES. 

L. SALT FOG PARAGRAPH 4.4.3.10 APPLIES. 

M. LEAKAGE PARAGRAPH 4.4.3.11 APPLIES. 

N. ENDURANCE PARAGRAPH 4.4.3.19 APPLIES. 

THE COMPONENT SHALL BE OPERATED FOR A TOTAL OF 1200 HOURS ON 

TIME, INCLUDING THE TIME ACCUMULATED DURING PREVIOUS CHECKOUT AND 

QUALIFICATION TESTS. THE DUTY CYCLE FOR THIS TEST IS 20 MINUTES ON AND 70 

MINUTES OFF, UNLESS TEMPERATURE STABILIZATION ON THE OFF CYCLE IS LESS 
NRO APPROVED FOR 

'RELEASE 1 JULY 2015 

--=214,45r_ crar./NIT. ! I I, ro r), ipqrs 

SPECIFICATION NO. EC-701A REV 5 12/04/67 PAGE 036 

THAN 70 MINUTES, THEN THE DUTY CYCLE SHALL BE 20 MINUTES ON AND TIME TO 

STABILIZE OFF. THE COMPONENT SHALL BE GIVEN PERFORMANCE TESTS, 

PARAGRAPH 4.1.3.4.3.3, AFTER EVERY 100 HOURS OF OPERATION. 

4.1.4 RELIABILITY TEST AND ANALYSIS 

A RELIABILITY MATHEMATICAL MODEL OF THE IVS SHALL BE CONSTRUCTED 

SHOWING THE FUNCTIONAL RELATIONSHIP OF ALL PARTS AND ASSEMBLIES. A LISTING 

OF ALL FUNCTIONAL PARTS SHALL BE SUPPLIED WITH A STATEMENT OF APPLIED OPERATIONAL STRESS LEVEL FOR EACH PART -VOLTAGE, CURRENT, MECHANICAL LOADS, 

VIBRATION, TEMPERATURE, ETC.-. FOR EACH PART APPLICATION, A FAILURE RATE 

SHALL BE STATED. MILITARY HANDBOOK MIL-HDBK-217 -FOR ELECTRICAL AND 

ELECTRONIC PARTS- AND SP 63-470, VOL. 1 -FARADA- -FOR ALL OTHER PARTSSHALL BE USED AS THE CONTROLLING SOURCES OF FAILURE RATE DATA -WITH THE 

USE OF APPROPRIATE APPLICATION FACTORS- UNLESS USE OF OTHER RATES IS 

JUSTIFIED BY DATA DERIVED FROM TESTS OR PRIOR PROVEN EXPERIENCE IN 

EQUIVALENT APPLICATIONS. 

USING THE PROCEDURE ABOVE, THE RELIABILITY AND/OR THE MTBF. FOR THE 

EQUIPMENT SHALL BE COMPUTED AND SUBMITTED. THIS ANALYSIS WILL CONSTITUTE 

ADEQUATE DEMONSTRATION OF THE DESIGN RELIABILITY, PROVIDED THAT THE 

COMPUTED RELIABILITY AND/OR THE MTBF MEETS OR EXCEEDS THE DESIGN 

REQUIREMENT STATED IN PARAGRAPH 3.1.2.1. AND PROVIDED THAT THE 

RELIABILITY MODEL AND ASSOCIATED RELIABILITY COMPUTATION ARE UPDATED FOR 

EVERY SUBSEQUENT CHANGE IN CONFIGURATION OR APPLICATION. 

4.2 CATEGORY II TEST PROGRAM 

NOT APPLICABLE 

6.0 NOTES 

10.0 APPENDIX 

-ssgErtSfingli ANDLLI1r, 
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True Image Velocity - I P S 

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z 0 

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SPECIFICATION NO EC701A, REV. 5 

Page 37 of 52 

—sEcitEr-sewriL HANDLING 

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DICATED 

NRO APPROVED FOR 

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-SECRET- SPEGIAL HANDLING 

SPECIFICATION NO. EC701A, REV. 5 

Page I-3g of 52 

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m 7 t 

i 

4 • • 

OPP 

NO 

0001111100001101mm 

00001100000000111011 0 

OM 

I--' i - ° N Milli ,- 0 11 

If) 0 0 O 0 O 0 

1 • 8 

9 

8 

7 

X.Elimlimm. NE == WEEMEMMIMIL 

smnismaallmumm;Immommorma_pga-= 

higmaid40 

• TN. 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

_sEeREF__ I m 

SPECIFICATION NO. EC701A, Rev. 5 

PAGE I- 40 OF 52 

LATER 

Figure 3B. 

—EGO- SPLUAL HANDLING 
U) 

4-1 

NRO APPROVED FOR 

RELEASE 1 JULY 2015 

ESPECIAL HANDLING SPECIFICATION NO. EC7OIA,REV 5 

PAGE I- 41 OF 52 

N 

Cl+ 

ci) 

t—i 

0 

U) 

U 

0

0 

Ca 

"C3 

cd 

X 

SampledPSD about Y-Axis of IVS 

C1) 

4-1 

C•1 

U) 

CN1 

0 

Frequency in Hz 

PSD DISTRIBUTION 

a) 

0 

00 

-ORETS$RALMAKKINC 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 HAWING SPECIFICATION NO. EC701A, REV. 5 

Page 42 of 52 

- - 

4 

1.t 

A 

/.4L 

0.6 

10. 

Figure 5A Attenuation Characteristic 

0.2. 

/0/47r aoAr1r 301a7r 

Frequency ilteRETSPECIACTANDLING 
NRO APPROVED FOR 

_RELEASE 1 JULY 2015 

,-,L HANDLIN 

SPECIFICATION NO. EC701A, Rev. 5 

PAGE 1- 43 OF 52 

LATER 

SECeET SPECIAL HANDLIP 

Figure 5B 
1 

N 

• NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

SPETV. HANDLING 

SPECIFICATION NO. EC701A, REV. 5 

Page I- 44 of 52 

0.030 IPS 

(Nr BT) (2 Cr) 

0.010 IPS 

0.0225 IPS 0.3 

TRUE IMAGE VELOCITY 

Figure 6 ALLOWABLE NOISE AND BIAS IN LARGE SIGNAL REGION 

—111INETsmotht_ [J-OlijkING 
SPECIFICATION NO. EC701A,REV. 5 

Page 45 of 52 -VW SPEtkiAL HANDLING 

- 4 

0 8 

.ra 

0 

-a 

0 

NRO APPROVED FOR 

_RELEASE 1 JULY 2015 

o o o o o o o: 0 0 

0 

IL i 

CO CO 

GVS1 

., 

, 

on 

T.\ 

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k 

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/ 

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Fig

ure 7 

aunIllawv 

--sing-SPENICRAMIDLIIRG 

(V 

0 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

SPECLAL HANDLING 

SPECIFICATION NO. EC701 

Page 46 of 52 

POWER 

LM MC 

RETURN 

POWER 

OUTPUTS 

X AMPLITUDE DATA 

X SIGNAL RETURN 

Y AMPLITUDE DATA 

Y SIGNAL RETURN 

X SIGN * 

IVS Y SIGN * 

ELECTRONICS FULL SCALE REFERENCE 

LOCK-ON * 

IVS 

HEAD 

BOX 

INTERCONNECT 

CABLE 

READY * 

CLOUD PRESENCE * 

SUBTHRESHOLD * 

X SATURATION * 

Y SATURATION * 

OTHER ANALOG DIAGNOSTICS 

ANALOG RETURN 

DISCRETE RETURN 

* Indicates Discrete Signal 

It may be possible to meet saturation signal requirement 

on the x, y amplitude data lines. 

Figure 8. IVS ELECTRICAL INTERFACE 

--aratErsPE'60.0L:e-iRiP0t.IG 
• 

2 so,' 

A-5-104 

/ 006 

'06 

TYPICAL 

EXPECTED 

RANGE 

4e4 

.5-00 

14 00 

300 PREDICT ED MI NIMU 36-) 

sf" 

Sun angle ( Degrees ) 

100 20 4o 94 

M 

NRO APPROVED FOR 

'RELEASE 1 JULY 2015 

SPECIAL HANDLING SPECIFICATION NO. EC701A, REV. 5 

Page 47 of 52 

Figure 9 AVERAGE LUMINANCE VERSUS SUN ANGLE 

isiNVEPNG 
NRO APPROVED FOR 

.RELEASE 1 JULY 2015 SPECIFICATION NO. EC701A REV. 5 

Figure 10 OPTICS TRANSMITTANCE VERSUS WAVELEN 

.. 11 

111 

allialVali 

(1 i 

lier 

i 1 

iiKOPILI1 Page 48 of 52 

0 

111 

ill 

i WA 111 ' I■II MAXIMUM POSSIBLE 

III 

3 

r-, 

0 

III 

& 

,,4' 

c., 

111111 

, 

i I lir Al ii r Iwe .... 

SPECIFICATION 'gig= 

REQUIREMENT 

.qq41111111111 C.) 

I F --Sag- SKI L HMI IN 

■I■r 

If OPTICAL ASSEMBLY TRANSMITTANCE 

TO IVS IMAGE PLANE 

( NOT INCLUDING STEREO ANGLE CORRECTION If FACTOR FOR VIGNETTING AND BLOCKAGE.) 

' 1- 1 1 1 III I _ 

eo „i-,45 ip 

WAVELENGTH ( NANOMETERS ) 

, os 

,O4 

,03 

,0( 
SPECTR

UM LEVEL, K VERSUS SUN ANGLE ( W.R.T. 

Grp el 

5( 

CONDITI

ONS 

CLEAR SCENE 0.1<M40.7 

NRO APPROVED FOR 

- RELEASE 1 JULY 2015 

0 

4-■ 

4-1 

•0 • 

Cti 

C./ 0 

4-1 CO 0. CU 0 0 

CD a) 

X 

_ 

I a) 

a) 

D.c.3 

.c.1 E 

C 

CJ CI) 

4-) '11 

Cr) 

34 0 

o 0.) 

.0 

W 4.) 

rn 

W (0 

.0 a) 

0 a) 

0 

N ti 

0 C 

Z E 

4 

PACE ISPECIFICATION 

49 OF 

NO.EC701A, 

5Z 

Rev. 5 0 

0 

• 

• 

O 

II 

1-1 

v-4 SunAng le ( Deg

rees ) 

fr-1 

C.1 

z 

,--sEcKE SPELIAL HANDLING 

__swig-SPEGI AL HANDLING 

s d 1 Td.1. 4It E o4.)z)1.1we7 *-.4.1 
SPECIFICATION NO. EC701A, REV. 5 

Page 50 of 52 

NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

___SNREF SPEGIAL HANDLING 

O 

C•1 

O 0 

co 

NOIrrIflfION aaz rIVNIION 

0 

DE FOCUS - MILS 

N 

00 

NORMALIZED RESPONSE 

AA

JOR A

XIS 

NORMALIZED RES

PONSE 

CONDITIONS:STA

TIC 

• 

ONAXIS 

NA

DIR 

HETEROCHROMATIC 

7 

L-Ar - _,..40.,---- 

{p

0 _,..---- 

4.7.■ c?) --- r. -- • - 0 P - - -

--SOCK vliAMING 

0 0 

In 

cn 

0 

0 

0 
NRO APPROVED FOR 

-RELEASE 1 JULY 2015 

—sEcRET-SPLIAL HANDLING SPECIFICATION NO. EC701A,REV 5 

Page 51 of 52 

0 

Minor Axis 

Normalized Response Conditions: Static 

On-Axis 

Nadir 

Heter

ochromatic 

0 

A 

0 O 

NOTIVIMOW GRZIIVIAINON 

-

sEgRETSPECKLIVIASOUISG 

LA 

0 

0 

co csi 

C/3 z DE FOCUS - 
6.0" 

_.1-- 75 

Surface B 

Surface 

NRO APPROVED FOR 

RELEASE 1JULY2015 

SPECIAL HANDLING SPECIFICATION NO. EC701A REV. 5 

Page 52 Of 52 

BETA SYSTEM ELECTONICS PACKAGE DEFINITION 

Ar Connector located on this surface 

==.1 0.060 to 0.080" 

I 1-- 2.0' 

6.0" - 

2.0" 

AL__ 

All holes are clearance holes 

for 10-32 screws. 

Hole placement within POM .005" 

of designated positions. 

Dwg. Tolerances: 2 place digits POM .010" 

3 place digits POM .005" 

4 

6.0" 

6.75" ...1—

1 .-- 0.37" Dwg. Scale: None 

DRAWING NOTES 

1. Component to be mounted to Cold Plate heat exchange using 10-32 

stainless screws 3/4" long. Screws to be furnished by sub-contractor. 

2. Surface finish on surfaces A and B 32 microinches. 

3. Screws torqued to 800 lb tensile force. 

4. Surface flatness. Surface "A" 10 mils. Surface "B" 5 mils. 

5. Surface finish to have Hemispherical Thermal Emissivity, ERof 

ER< 0.15 

6. Component to be installed to Cold Plate using DC34 conductive grease. 

Figure 14. ELECTRONICS BOX DEFINITION 

SEAL