**POLAR Spacecraft Status As of: Tues, 10 Aug 04 16:00 EST**

*(changes from last week in bold border)*

+----------+--------+--------+--------+---------+---------+---------+
| **Subs   | **NOAA | **NOAA | **NOAA | **NOA   | ##### N | ##### N |
| ystem/** | -12D** | -14J** | -15K** | A-16L** | OAA-17M | OAA-N18 |
|          |        |        |        |         |         |         |
| **Com    | AM:    | AM:    | AM:    | PM:     | AM:     | Planned |
| ponent** | AN     | AN     | AN     | A       | A       | PM      |
|          | =1644Z | =1930Z | =1837Z | N=1437Z | N=2220Z |         |
|          |        |        |        |         |         | Plan    |
|          | STIP   | STIP   | GAC    | GAC&LAC | GAC&LAC | AN      |
|          | data   | data   | data   | data    | data    | =14:00L |
|          | only   | only   | only   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **LA     | 05     | 12     | 05     | 0       | 6/24/02 | Planned |
| UNCHED** | /14/91 | /30/94 | /13/98 | 9/21/00 |         |         |
|          |        |        |        |         |         | #####   |
|          |        |        |        |         |         | ## NET  |
|          |        |        |        |         |         | 2/11/05 |
+----------+--------+--------+--------+---------+---------+---------+
| **CNTL   | OBP2   | OBP2   | OBP2   | OBP2    | OBP2    |         |
| OBP**    |        |        |        |         |         |         |
|          |        | OBP1   |        |         | CPU1&2  |         |
|          |        | inope  |        |         | Errr    |         |
|          |        | rative |        |         | TOAR    |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS**  | B-BUS  | B-BUS  | B-BUS  | B-BUS   | B-BUS   |         |
|          |        |        |        |         |         |         |
|          | XSU-1  | XSU2   | XSU-1  | XSU-1   | XSU-1   |         |
|          |        | (XSU1  |        |         |         |         |
|          |        | inop)  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS    | NO     | NO     | NO     | NO      | NO      |         |
| VETO**   |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | [N     | [N     | [N     | #####   | #####   | New     |
| *ADACS** | ominal | ominal | ominal | # [Nomi | # [Nomi |         |
|          | Mode]  | Mode]  | Mode]  | nal Mod | nal Mod | ring    |
| X=Yaw    | {.unde | {.unde | {.unde | e]{.und | e]{.und | laser   |
|          | rline} | rline} | rline} | erline} | erline} | gyro    |
| Y=Roll   |        |        |        |         |         |         |
|          | RG     | Rgm    | Rg     | Rgmode= | Rgmode= |         |
| Z=Pitch  | mode=M | ode=Di | mode=M | Monitor | Monitor |         |
|          | onitor | sabled | onitor |         |         |         |
|          |        |        |        | Gyro-3  | Gyro-3  |         |
|          | Gyro   | Gyro   | Gyro-3 | Off     | Off     |         |
|          | cha    | cha    | Off    | 6/10/04 | 6/10/04 |         |
|          | ns=XYZ | ns=XYZ | 6      |         |         |         |
|          |        |        | /26/00 | Gyro    | Gyro    |         |
|          |        | SS     | Gyro   | ch      | ch      |         |
|          |        | check  | cha    | ans=AAA | ans=AAB |         |
|          |        | Di     | ns=AAB |         |         |         |
|          |        | sabled |        | Gyro3   | Gyro3   |         |
|          |        | when   | N2 Low | TOAR    | TOAR    |         |
|          |        | mo     | PSI    | 427     | 436     |         |
|          |        | de=YGC | i      |         |         |         |
|          |        |        | nvalid |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI     | PRI     |         |
|          |        |        |        |         |         |         |
|          | BU     | BU     | daily  | Daily   | Daily   |         |
|          | random | random | bias   | Bias    | Bias    |         |
|          | e      | e      | -8     | --5.5   | --3     |         |
|          | nables | nables | mSec   | mS      | mSec    |         |
|          |        | daily  |        |         |         |         |
|          | daily  | bia    |        |         |         |         |
|          | bi     | s--7.0 |        |         |         |         |
|          | as+6.5 | mS     |        |         |         |         |
|          | mS     |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2       | 2       |         |
| DIV**    |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **MIRP** | Ex     | Ex     | Ex     | E       | E       |         |
|          | ternal | ternal | ternal | xternal | xternal |         |
|          | Synch  | Synch  | Synch  | Sync    | Sync    |         |
|          |        |        | R      |         |         |         |
|          | R      | R      | ephase | Rephase | Rephase |         |
|          | ephase | ephase | 0730   | each    | Enabled |         |
|          | E      | 0730   | daily  | orbit   |         |         |
|          | nabled | Daily  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **TIP    | 1      | 1      | 2      | 1       | 1       |         |
| SIDE**   |        |        | (since |         |         |         |
|          |        |        | 4/     | Analog  | Analog  |         |
|          |        |        | 23/03) | telem   | telem   |         |
|          |        |        |        | d       | drift   |         |
|          |        |        | Ch     | rifting |         |         |
|          |        |        | annels |         |         |         |
|          |        |        | 224    |         |         |         |
|          |        |        | -227   |         |         |         |
|          |        |        | i      |         |         |         |
|          |        |        | nvalid |         |         |         |
|          |        |        | TOAR   |         |         |         |
|          |        |        | 432    |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DTRs** | 3, 4,  | 1, 2B, | 1, 2,  | 1       | 1,2,3,4 | All     |
|          | 5B     | 3A, 5  | 3, 4   | ,2,3,4A |         | solid   |
|          |        | Safe   | Saf    |         | Safes   | state   |
|          | Saf    | state- | estate | Sa      | tate=1B | digital |
|          | estate | 1B     | 1B EOT | festate |         | re      |
|          | 3B     |        |        | 3A      | D       | corders |
|          | since  |        |        |         | TR2-SSR |         |
|          | 9 Jun  |        |        | 4B TOAR |         |         |
|          |        |        |        | 418     | DTR5    |         |
|          |        |        |        |         | TOAR    |         |
|          |        |        |        | (STIP   | 420     |         |
|          |        |        |        | only)   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **VTX**  | #1 ON  | OFF    | #1 ON  | INOP    | #2 ON   |         |
|          |        |        |        |         |         |         |
| (APT     | 137.50 | Since  | 137.50 | OFF     | 137.62  |         |
| data)    | MHZ    | 8      | MHZ    | since   | MHZ     |         |
|          |        | /14/02 |        | 1       |         |         |
|          |        |        |        | 1/15/00 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BTX**  | #1     | #2     | #1     | #1      | ###     |         |
|          |        |        |        |         | #### #2 |         |
|          | 136.77 | 137.77 | 137.35 | 137.35  |         |         |
|          | MHZ    | MHZ    | MHZ    | MHZ     | 137.77  |         |
|          |        |        |        |         | MHZ     |         |
+----------+--------+--------+--------+---------+---------+---------+
| **STX**  | 1 --   | 3 --   | 2-Omni | 1 --    | 3 --    |         |
|          | HRPT;  | HRPT   | HRPT   | HRPT;   | HRPT    |         |
| #        |        |        |        |         |         |         |
| 1=1698.0 | 2,3 -  | 2, 1   | 4-Pl   | 2--     | TOAR424 |         |
| mhz      | Pl     | --     | ayback | Pl      | low     |         |
|          | ayback | Pl     |        | ayback; | power   |         |
| #        |        | ayback | 1,     |         |         |         |
| 2=1702.5 |        |        | 2,3-De | 4 --    | 1&2     |         |
| mhz      |        |        | graded | P       | P       |         |
|          |        |        |        | layback | layback |         |
| #        |        |        | #      |         |         |         |
| 3=1707.0 |        |        | #####  | 3 low   | 4 --    |         |
| mhz      |        |        |        | power   | TIP     |         |
|          |        |        |        | unused  |         |         |
| #        |        |        |        |         |         |         |
| 4=2247.5 |        |        |        |         |         |         |
| mhz      |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| #        | [Ar    | [Array | [Array | [Array  | [Array  |         |
| ## POWER | rayOff | Off    | Off    | Off     | Off.    |         |
|          | -50]   | -55]   | -45]   | -4      | --4     |         |
| (Array   | {.unde | {.unde | {.unde | 0]{.und | 0]{.und |         |
| offset,  | rline} | rline} | rline} | erline} | erline} |         |
| charge   |        |        |        |         |         |         |
| and      | since  | Since  | Since  | Since   | Since   |         |
| eclipse  | 7      | 8      | 1      | 7/16/02 | 1/29/04 |         |
| states,  | /27/04 | /21/03 | /25/01 |         |         |         |
| sun      |        |        |        | Eclipse | Eclipse |         |
| angle)   | E      | E      | Full   | all     | all     |         |
|          | clipse | clipse | Sun    | year    | year    |         |
|          | end    | all    |        |         |         |         |
|          | 8/20   | year   | Sun    | Sun     | Sun     |         |
|          |        |        | Angle  | Angle   | Angle   |         |
|          | B      | Sun    | 27     | 61      | at 68   |         |
|          | attery | Angle  |        |         |         |         |
|          | UVtrip | at 37  | down   | do      | Steady  |         |
|          | 7/25   | steady | trend  | wntrend | trend   |         |
|          |        | trend  | to 8   | to 49   |         |         |
|          | Sun    |        | in     | on 31   | Batts   |         |
|          | Angle  | Batts  | early  | Oct     | 1-3=    |         |
|          | 33     | 1-3=   | Oct    |         | LRC     |         |
|          | down   | LRC    |        | Batts   |         |         |
|          | to 15  |        | Batts  | 1-3=    | V/T=    |         |
|          | m      | Batts  | 1-3=   | LRC     | 4/8     |         |
|          | id-Oct | 1&3V/  | LRC    |         |         |         |
|          |        | T=8/11 |        | V/T=4/8 |         |         |
|          | Shunt  |        | V      |         |         |         |
|          | de     | Batt2  | /T=7/9 |         |         |         |
|          | graded | V      |        |         |         |         |
|          |        | T=9/11 |        |         |         |         |
|          | Batts  | )      |        |         |         |         |
|          | 1      |        |        |         |         |         |
|          | &2=LRC | Shunt  |        |         |         |         |
|          |        | De     |        |         |         |         |
|          | V/T=4  | graded |        |         |         |         |
|          | (      |        |        |         |         |         |
|          | 26Jul) |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | N      | INOP   | N      | D       | ###     | New     |
| *AVHRR** | ominal |        | ominal | EGRADED | Nominal | br      |
|          |        | Scan   |        |         |         | ushless |
|          | Turned | motor  | Rare   | Ty      | 3A-B    | scan    |
|          | backon | s      | major  | pically | switch  | motors  |
|          | 7/28   | talled | scan   | erratic | enabled |         |
|          | Com    |        | motor  | perfo   |         |         |
|          | manded | 14 Apr | s      | rmance/ |         |         |
|          | back   | 04     | urges. | quality |         |         |
|          | to     |        | Last   |         |         |         |
|          | C      |        |        | TCE24   |         |         |
|          | han-2A |        | In     | OFF     |         |         |
|          | 8/3/04 |        | cident | 4/14    |         |         |
|          |        |        | 8/9/03 |         |         |         |
|          | I      |        |        | Chan 3B |         |         |
|          | nvesti |        |        | only.   |         |         |
|          | gating |        |        |         |         |         |
|          | APT    |        |        |         |         |         |
|          | interf |        |        |         |         |         |
|          | erence |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | Opera  | Oper    | O       |         |
| MSU-A1** |        |        | tional | ational | FF/INOP |         |
|          |        |        |        |         |         |         |
|          |        |        | Ch14   | TOAR    | Since   |         |
|          |        |        | inope  | 415 on  | 1       |         |
|          |        |        | rative | primary | 0/30/03 |         |
|          |        |        |        | PLLO    |         |         |
|          |        |        | Ch11   | chans   | Ino     |         |
|          |        |        | inope  | 9-14    | perable |         |
|          |        |        | rative | bias    | Red in  |         |
|          |        |        |        | shift.  | status. |         |
|          |        |        |        |         | S       |         |
|          |        |        |        | TOAR    | urvival |         |
|          |        |        |        | 417 on  | heat    |         |
|          |        |        |        | Backup  | on.     |         |
|          |        |        |        | PLLO    |         |         |
|          |        |        |        | inop    |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | D       |         |         |
|          |        |        |        | iffuser |         |         |
|          |        |        |        | test    |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | 7/16.   |         |         |
|          |        |        |        | n       |         |         |
|          |        |        |        | egative |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | N      | Nominal | Nominal |         |
| MSU-A2** |        |        | ominal |         |         |         |
|          |        |        |        | Space   |         |         |
|          |        |        |        | Pos     |         |         |
|          |        |        |        | ition-2 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | Opera  | Oper    | Nominal |         |
| AMSU-B** |        |        | tional | ational |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Bias   | Space   |         |         |
|          |        |        | in All | Pos     |         |         |
|          |        |        | Chans. | ition-3 |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Motor  | IPD     |         |         |
|          |        |        | surges | reports |         |         |
|          |        |        | ,most  | channel |         |         |
|          |        |        | recent | 8       |         |         |
|          |        |        | 7      | degr    |         |         |
|          |        |        | /29/04 | adation |         |         |
|          |        |        |        |         |         |         |
|          |        |        | IPD    |         |         |         |
|          |        |        | R      |         |         |         |
|          |        |        | eports |         |         |         |
|          |        |        | of     |         |         |         |
|          |        |        | de     |         |         |         |
|          |        |        | graded |         |         |         |
|          |        |        | data   |         |         |         |
|          |        |        | on     |         |         |         |
|          |        |        | Chan-3 |         |         |         |
|          |        |        | since  |         |         |         |
|          |        |        | 4/30   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ### HIRS | IN     | N      | VA     | Oper    | NOMINAL | ##      |
|          | OP/OFF | OMINAL | RIABLE | ational |         | ######  |
|          | Elect  |        |        |         | 1 Pixel |         |
|          | ronics | Opera  | FW     | Occ     | cross   |         |
|          | off    | tional | m      | asional | track   |         |
|          | since  |        | ode=Hi | major   | misal   |         |
|          | 7      | Occa   | Powr   | FM      | ignment |         |
|          | /25/04 | sional |        | surges, | .       |         |
|          | UVtrip | loss   | FW     | most    |         |         |
|          |        | of     | Heater | recent  |         |         |
|          | Filter | Fwheel | OFF    |         |         |         |
|          | Wheel  | synch  |        | 4/29/04 |         |         |
|          | turned |        | Fr     |         |         |         |
|          | OFF    |        | equent | IPD     |         |         |
|          | 10/    |        | Filter | Reports |         |         |
|          | 17/02. |        | Motor  | of      |         |         |
|          |        |        | c      | excess  |         |         |
|          |        |        | urrent | noise   |         |         |
|          |        |        | "mini" | in      |         |         |
|          |        |        | s      | space   |         |         |
|          |        |        | urges, | view    |         |         |
|          |        |        | most   | c       |         |         |
|          |        |        | recent | hannels |         |         |
|          |        |        | 7      | 21May04 |         |         |
|          |        |        | /11/04 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Occa   |         |         |         |
|          |        |        | sional |         |         |         |
|          |        |        | major  |         |         |         |
|          |        |        | FM     |         |         |         |
|          |        |        | c      |         |         |         |
|          |        |        | urrent |         |         |         |
|          |        |        | s      |         |         |         |
|          |        |        | urges, |         |         |         |
|          |        |        | most   |         |         |         |
|          |        |        | recent |         |         |         |
|          |        |        | 6/3/04 |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ###      |        |        |        |         |         | #####   |
|  MHS/MIU |        |        |        |         |         | ### At  |
|          |        |        |        |         |         | factory |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | R       |
|          |        |        |        |         |         | eplaces |
|          |        |        |        |         |         | AMSUB   |
+----------+--------+--------+--------+---------+---------+---------+
| **MSU**  | IN     | Opera  |        |         |         |         |
|          | OP/OFF | tional |        |         |         |         |
|          |        |        |        |         |         |         |
|          | Elect  | Scan   |        |         |         |         |
|          | ronics | motor  |        |         |         |         |
|          | off    | and    |        |         |         |         |
|          | since  | a      |        |         |         |         |
|          | 7      | ntenna |        |         |         |         |
|          | /25/04 | pr     |        |         |         |         |
|          |        | oblems |        |         |         |         |
|          | Scan   |        |        |         |         |         |
|          | Motor  |        |        |         |         |         |
|          | OFF    |        |        |         |         |         |
|          | since  |        |        |         |         |         |
|          | 3      |        |        |         |         |         |
|          | /12/03 |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SSU**  |        | N      |        |         |         |         |
|          |        | ominal |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DCS**  | DRU's  | N      | N      | Nominal | Nominal |         |
|          | com    | ominal | ominal |         |         |         |
|          | manded |        |        |         |         |         |
|          | back   |        |        |         |         |         |
|          | on     |        |        |         |         |         |
|          | 8/3/04 |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARR** |        | N      | Opera  | Oper    | Nominal |         |
|          |        | ominal | tional | ational |         |         |
|          |        |        |        |         | A-side  |         |
|          |        |        | A-Side | A-side  |         |         |
|          |        |        |        |         | All AGC |         |
|          |        |        | All    | All AGC | Mode    |         |
|          |        |        | AGC    | Mode    |         |         |
|          |        |        | Mode   |         |         |         |
|          |        |        |        | (B-side |         |         |
|          |        |        | Interm | in FG   |         |         |
|          |        |        | ittent | mode)   |         |         |
|          |        |        | fa     |         |         |         |
|          |        |        | ilures | 243 MhZ |         |         |
|          |        |        | for    | = INOP. |         |         |
|          |        |        | 243MHz |         |         |         |
|          |        |        | A&B    |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARP** |        | OFF    | N      | Nominal | Nominal |         |
|          |        |        | ominal |         |         |         |
|          |        | Power  |        | RCVR    |         |         |
|          |        | F      | RCVR   | B/W = 2 |         |         |
|          |        | ailure | B/W =  |         |         |         |
|          |        |        | 2      |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SEM**  | OFF    | Opera  | N      | Nominal | Nominal |         |
|          |        | tional | ominal |         |         |         |
|          | Since  |        |        | E-CDEM  | E-CDEM  |         |
|          | 7/25   | El     | E      | -HVPS=5 | -HVPS=2 |         |
|          | UVtrip | ec-CH- | -CDEM- |         |         |         |
|          |        | HVPS=0 | HVPS=2 | P-CDEM  | P-CDEM  |         |
|          | No     |        |        | -HVPS=4 | -HVPS=3 |         |
|          | turnon | Pr     | P      |         |         |         |
|          | p      | ot-CH- | -CDEM- |         |         |         |
|          | lanned | HVPS=0 | HVPS=0 |         |         |         |
|          |        |        |        |         |         |         |
|          | El     | 1 of 4 |        |         |         |         |
|          | ec-CH- | Tele   |        |         |         |         |
|          | HVPS=4 | scopes |        |         |         |         |
|          |        | inope  |        |         |         |         |
|          | Pr     | rative |        |         |         |         |
|          | ot-CH- |        |        |         |         |         |
|          | HVPS=0 |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SBUV** |        | De     |        | Oper    | Nominal |         |
|          |        | graded |        | ational |         |         |
|          |        |        |        |         | Anode   |         |
|          |        | G      |        | D       | Mode    |         |
|          |        | rating |        | egraded |         |         |
|          |        | motor  |        | Ozone   |         |         |
|          |        | stuck  |        | data    |         |         |
|          |        | at     |        | r       |         |         |
|          |        | po     |        | eported |         |         |
|          |        | sition |        | TOAR    |         |         |
|          |        | --930  |        | 435     |         |         |
|          |        | on     |        |         |         |         |
|          |        | 7/8/04 |        | Primary |         |         |
|          |        | re     |        | &       |         |         |
|          |        | covery |        | Backup  |         |         |
|          |        | ops    |        | d       |         |         |
|          |        | succ   |        | iffuser |         |         |
|          |        | essful |        | =TOAR   |         |         |
|          |        | 7/9    |        | 426 and |         |         |
|          |        |        |        | TOAR    |         |         |
|          |        | Flex   |        | 433     |         |         |
|          |        | memory |        |         |         |         |
|          |        | 3      |        | Both    |         |         |
|          |        | (giant |        | have    |         |         |
|          |        | step)  |        | Antenna |         |         |
|          |        | ops    |        | deploy  |         |         |
|          |        | sus    |        | p       |         |         |
|          |        | pended |        | roblems |         |         |
|          |        | indefi |        |         |         |         |
|          |        | nitely |        | AMSU    |         |         |
|          |        | on     |        | EMI     |         |         |
|          |        | 1      |        | causing |         |         |
|          |        | 2/2/03 |        | erratic |         |         |
|          |        |        |        | B       |         |         |
|          |        | R      |        | ehavior |         |         |
|          |        | educed |        | in PMT  |         |         |
|          |        | oper   |        | cathod, |         |         |
|          |        | ations |        | range 3 |         |         |
|          |        | s      |        |         |         |         |
|          |        | tarted |        |         |         |         |
|          |        | 6/5/03 |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | N/A    | ON      | ON      |         |
| SADPOS** |        |        |        |         |         |         |
|          |        |        |        | Enabled | ENABLED |         |
|          |        |        |        | MFac    |         |         |
|          |        |        |        | tor=50% |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **T      | N      | N      | TCE26  | Nominal | TCE3H   |         |
| HERMAL** | ominal | ominal | & 15H  |         | Batt 2A |         |
|          |        |        |        | TCE24   | heater  |         |
| Heaters, | TCE's  |        | Telem  | OFF     | failed  |         |
| louvers  | back   |        | i      | 4/14    | ON,     |         |
|          | to     |        | nvalid | (AVHRR  | turned  |         |
| TCE's    | n      |        |        | H&L)    | off     |         |
|          | ominal |        | TOAR   |         | 8/26/03 |         |
|          | c      |        | 432    |         | TOAR    |         |
|          | onfigu |        |        |         | 428     |         |
|          | ration |        | HIRS   |         |         |         |
|          | fol    |        | FW     |         | AMSU-A1 |         |
|          | lowing |        | Heat   |         | s       |         |
|          | 7      |        | OFF    |         | urvival |         |
|          | /25/04 |        |        |         | heaters |         |
|          | U      |        | TCE2   |         | on      |         |
|          | Vtrip. |        | 4L&25L |         | 1       |         |
|          |        |        | (HIRS  |         | 0/29/03 |         |
|          |        |        | &      |         |         |         |
|          |        |        | AVHRR) |         |         |         |
|          |        |        | failed |         |         |         |
|          |        |        | 5      |         |         |         |
|          |        |        | /13/98 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | RCE    |         |         |         |
|          |        |        | ther   |         |         |         |
|          |        |        | mostat |         |         |         |
|          |        |        | failed |         |         |         |
|          |        |        | 5      |         |         |         |
|          |        |        | /13/98 |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
|          | *      | *      | *      | **N16** | **N17** | ### N   |
|          | *N12** | *N14** | *N15** |         |         | OAA-N18 |
+----------+--------+--------+--------+---------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-12 Undervoltage trip recovery operations were completed on 3 Aug at
11:15Z when the DCS DRU's were commanded

back on and the AVHRR APT channel was commanded back to 2A (from 1A).
Although operationally capable, the SEM remains off to reduce the
battery voltage draw down during its orbital eclipse. Currently, the
minimum battery voltage draw down (lowest voltage during the eclipse)
continues to rise as the percentage of time that N12 spends in darkness
continues to fall. The most recent battery voltage drawdown point is now
reaching approximately 21 volts, well above the UV Trip point of 18.75.
This trend should continue through 20 Aug when the N12 eclipse season
ends and it returns to full sun orbits. At that time, it is probable
that the SEM will be commanded back on and additional power balance
reconfigurations will be considered (including solar array moves and
turning non-operational payloads back on). Carl Gliniak is the EMOSS POC
for these power issues. In addition, in early September, given the
current solar array offset angle, consideration to the attitude control
mode for N12 will also have to be discussed because of the probability
that the sun sensor will start to become shaded and the spacecraft will
autonomously switch to YGC mode. Jim Sheperd is the EMOSS POC leading
the analysis for this eventuality.

In order to support the analysis necessary to make informed
reconfiguration decisions, NOAA Scheduling has increased the number of
support on N12 to 4 per day (vs 1 per day previous to the UV Trip
incident). However, this has required the AET's to implement a larger
number of "manual" STIP recorder dumps in order to capture all the data.
Discussion on how best to proceed with this operational concept is also
underway.

On 10 Aug, EMOSS engineers were advised by IPD (direct readout group)
that N12 was experiencing significant interference on the VTX-APT
downlink at 137.5 mHz. Within the active POES constellation, only N15 is
broadcasting on this frequency and there is currently nominal separation
( at least 45 minutes) between these two spacecraft. The EMOSS team is
investigating this interference but has not yet drawn any conclusions.
As reported by the user in California, "\[We are receiving\] occasional
and intermittent transmitting \[interference\] on N12 at 137.5MHz.  It
appears to be a signal from another orbiting satellite as it\'s
signal is dopplering and shows varying signal strength.  Are some of the
old defunct NOAA spacecraft being manipulated? Illustration 1 (in this
weekly report) depicts a direct APT readout an image received in Los
Angeles from NOAA-12 (Northbound) on 9 Aug 04 at 15:41 PDT, with this
interference clearly shown.  The subsequent NOAA-12 pass was totally
interference free."

NOAA-14: Previous concerns voiced by EMOSS engineers regarding the
relatively low voltage points being reached by N14 batteries as they
exit eclipse have been somewhat mitigated because of the relative
stability of the low voltage point reached by N14 during the dark phase
of its orbit (illustration 2). Reinforcing this mitigation is the
knowledge that the percentage time N14 spends in the dark will be
trending lower until mid-September. Therefore, the reconfigurations that
engineers have discussed implementing (i.e. AVHRR electronics turnoff,
solar array offset reduction) are being held in abeyance for the time
being. Close scrutiny will continue to be maintained on N14's power
balance situation and consideration for implementing some
reconfiguration in late September may have to be re-visited. Carl
Gliniak is EMOSS POC for this issue. Otherwise, there were no changes to
N14 during the past reporting period.

NOAA-15: The N15 AMSU-B experienced one of its periodic scan motor
current surges on 29 Jul which returned back to nominal several hours
later and has not re-occurred during the past reporting period. The N15
HIRS filter motor continues its cyclical series of "mini surges" and
return to nominal with no reports of image degradation being received by
EMOSS engineers during the surges (illustration 3).

Since ending its eclipse season on 29 July, most N15 AVHRR thermal
components have begun a significant down trend (illustration 4). This
thermal downtrend has coincided with an improvement in the AVHRR scan
motor current operational profile which for the past two weeks had been
exhibiting some un-auspicious (albeit non-imagery impacting) performance
and has recently returned back to a nominal operating profile
(illustration 5). In addition, the synch delta on N15 AVHRR remained
steady throughout this period and has generally not changed since the
scan motor improvement occurred (illustration 6) and imagery remains
nominal and no reports of degraded images have been received by EMOSS
engineers (illustration 7). Jim Walters and Sally House are EMOSS POC's
for this payload.

N15 eclipse season ended on 29 July and all associated power values have
performed nominally since that time (illustration 8).

NOAA-16: After several continuous weeks of consistently degraded
imagery, the N16 AVHRR improved dramatically starting around 5 Aug with
the scan motor current eventually falling to levels that eliminated the
bar codes completely and even approaching values where wave patterns
could possibly be eliminated as well. (Although the most recent HRPT
images from N16 today are still showing the wave patterns.) In addition,
the synch delta has gone back to "nominal" since 5 August after spending
most of the past 30-45 days at "pegged levels". This improvement in
synch delta also has the added benefit of eliminating the lost frames of
imagery (from all N16 payloads) that occurs each time MIRP Rephase
Enabled was executed over the south pole and the synch delta was over
400 (which it always was last month.) This improvement has also
coincided with a downtrend in AVHRR component temperatures see
illustrations 9-11.

The N16 HIRS has remained nominal over the past weeks. It is mention in
this analysis because of concerns regarding the coupling of the N16
AVHRR and HIRS thermal profiles. There was no, coinciding change in the
N16 HIRS filter motor temp or current concurrent with that of the AVHRR
scan motor improvement and thermal downtrend onset.

NOAA-16 (cont)

The ADACS on N16 was generally nominal during the past reporting period.
However, the N-16 XA and YA gyro

channels did show increased rate max/min values for the period between
JDAY 220 through 222. This coincides with the period when there were
simultaneous sun and moon conflicts in the ESA. There are larger than
usual attitude transients when ESA algorithm switching involves two
quadrants instead of just one. The biggest transients are usually when
switching from a two quadrant conflict to a one quadrant conflict. Jim
Sheperd monitored this periodic situation for EMOSS and his conclusion
is that there is no cause for concern. (Illustration 12 ).

NOAA-17: EMOSS engineers have noticed some possible instabilities or
divergences in the HIRS Period Monitor on N17. Over

the course of the past 2 years there seems to be some divergence between
the daily high and low value for this mnemonic with a slight bias
towards a lower mean value. Analysis of the HIRS Filter Motor shows a
slight upward trend over the past 2 years but very stable values week to
week. At the current time this is not considered any cause for concern,
just a slight change in operational profile that EMOSS engineers will
maintain close vigilance over and periodically report upon. Jim Walters
is POC (illustrations 13 and 14).

The ADACS on N17 was generally nominal last week with
[slightly]{.underline} elevated Yaw updates over previous weeks that
have since returned to more nominal values (illustration 15). Jim
Sheperd is EMOSS POC.

NOAA-N EMOSS engineers Kim Kolb and Tate Yancy began loading the NOAA-N
model into TTS in anticipation of

simulations in the coming months. Previous attempts to perform this load
have met with some technical difficulties.

MISC: EMOSS PC swapping has been completed all POES engineers are now
configured with the new PC's running

Windows XP. A new DVD writer has been received by EMOSS engineer Jeff
Devine that will provide far greater archiving capacity than was
previously possible. Once implemented and integrated with the current
archive system used by EMOSS (POES), this new hardware should provide
enough capacity to store as much as four years of the selected processed
telemetry files stripped out of Greta each day (approx 6500 analog,
discrete and Dig-B mnemonics from N14-N17) on a single disk, a six
sigma+ enhancement over the current capability.

Meetings supported by EMOSS personnel during the past week included the
MOWG and TOAR Board.

EMOSS engineer Jeff Devine generated the standard Monthly Stoplight
reports for the month of July last week.

![](media/image1.wmf){width="5.40625in" height="6.8375in"}

Illustration 1: N12 APT Image from 9 Aug at 22:45Z over Los Angeles, CA
showing possible RF Interference.

![](media/image2.wmf){width="7.870138888888889in"
height="5.963888888888889in"}

Illustration 2: N14 Power Analysis

(Given the current trend of somewhat reduced percentage darkness time
per orbit for the next several weeks, no immediate reconfiguration
requirements appear absolutely necessary at this time)

![](media/image3.wmf){width="7.441666666666666in"
height="5.629166666666666in"}

Illustration 3: N15 HIRS and AMSU-B Motor Performance

(nothing out of the usual)

![](media/image4.wmf){width="7.870138888888889in"
height="5.972222222222222in"}

[Illustration 4: N15 AVHRR Thermal Profile Analysis]{.underline}

(Downtrend onset lagging several days behind the end of eclipse season)

![](media/image5.wmf){width="7.870138888888889in"
height="5.9534722222222225in"}

Illustration 5: N15 AVHRR Scan Motor Health Analysis

(Return to nominal during the past several days.

Note: Eclipse season ended on J-Day 211)

![](media/image6.wmf){width="7.870138888888889in"
height="5.961111111111111in"}

Illustration 6: N15 AVHRR Synch Delta Analysis, Strategic and Tactical.

(No apparent concerns in the short term)

![](media/image7.wmf){width="5.63125in" height="7.526388888888889in"}

Latest N15 GAC Latest N15 HRPT

10 Aug 10:00Z 10 Aug 13:25Z

[Illustration 7: N15 AVHRR Imagery Analysis.]{.underline}

[(Latest images, all clean. Note N15 does not support LAC)]{.underline}

![](media/image8.wmf){width="7.870138888888889in"
height="5.972222222222222in"}

[Illustration 8: N15 Post-Eclipse season power analysis]{.underline}

[(everything appears nominal)]{.underline}

![](media/image9.wmf){width="8.125in" height="6.094444444444444in"}

[Illustration 9: N16 AVHRR Scan Motor vs Imagery Analysis]{.underline}

[Images point to the general date/time they were taken relative to scan
motor current. Note improvement to the point that when Rephase is
Enabled (RE on each image) it no longer creates the dark line across the
image which would otherwise indicate that an actual rephase
occurred.)]{.underline}

![](media/image10.wmf){width="7.748611111111111in"
height="5.883333333333334in"}

Illustration 10: N16 Synch Delta Analysis.

Much Improved for the first time in a month

![](media/image11.wmf){width="7.870138888888889in"
height="5.972222222222222in"}

Illustration 11: N16 AVHRR Thermal Analysis

(Downtrend coinciding with improvement in scan motor performance.)

![](media/image12.wmf){width="7.625in" height="5.778472222222222in"}

Illustration 12: N16 ADACS Health Analysis

![](media/image13.wmf){width="7.879166666666666in"
height="5.976388888888889in"}

Illustration 13: N17 HIRS Period Monitor Trends

Something to monitor but not worry about at this time

![](media/image14.wmf){width="7.870138888888889in"
height="5.961111111111111in"}

[Illustration 14: N17 HIRS Filter Wheel Analysis, Tactical and
Strategic]{.underline}

[Generally stable with some upward bias possibly caused by analog TIP
drift]{.underline}

![](media/image15.wmf){width="8.002777777777778in"
height="6.064583333333333in"}

[Illustration 15: N17 ADACS Health Analysis]{.underline}

![](media/image16.wmf){width="7.751388888888889in"
height="1.8298611111111112in"}

# 

# ![](media/image17.wmf){width="6.749305555555556in" height="5.113194444444445in"}

# N17 CPU Single Event Upset Scrub Analysis (New). 

# Last week and total. 

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING August 6, 2004

  ------------ ----------- ----------- ----------- ----------- -----------
  DAY/DATE     NOAA-12     NOAA-14     NOAA-15     NOAA-16     NOAA-17

  FRI. 07/30   -564 msec   -019 msec   -052 msec   +041 msec   -008 msec

  SAT. 07/31   -561 msec   -018 msec   -053 msec   +040 msec   -008 msec

  SUN. 08/01   -562 msec   -009 msec   -052 msec   +040 msec   -010 msec

  MON. 08/02   -563 msec   -009 msec   -054 msec   +040 msec   -010 msec

  TUE. 08/03   -565 msec   -008 msec   -054 msec   +041 msec   -009 msec

  WED. 08/04   -569 msec   -008 msec   -056 msec   +040 msec   -010 msec

  THU. 08/05   -563 msec   -011 msec   -056 msec   +040 msec   -009 msec
  ------------ ----------- ----------- ----------- ----------- -----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-12 Autonomous -500mSec jump on 17 Jun return expected 2 Sept

Daily ETCUP bias of +6.5 mSec started on 12/10/03.

NOAA-14: As of 1223/03 the TIP clock is corrected daily by ---7.0 msec
to compensate for drift.

Subtracted 150 mSecs on 30 June

NOAA-15: As of 04/23/03 the TIP clock is corrected daily by ---8 msec to
compensate for drift.

Added 100 msec to spacecraft command clock on 10 June 03.

NOAA-16: As of 12/23/03 the TIP clock is corrected daily by --5.5 msec
to compensate for drift.

Subtracted 100 msec from spacecraft command clock on 23 Dec 03.

NOAA-17: As of 12/23/03 the TIP clock is corrected daily by --3 msec to
compensate for drift.

Added 125 Msecs3 Feb 04.

![](media/image18.wmf){width="6.996527777777778in"
height="4.168055555555555in"}

***PACS DATA AVAILABILITY (%)***

July 30, 2004 through August 5, 2004

JDAY 205-211

  ----------- ------- ------ --------- ---------- ---------- ------------- ---------
                             NOAA15    \*NOAA14   \*NOAA12   NOAA16        NOAA17

  Friday      07/30   205    100.0                           100.0         100.0

                                                                           

  Saturday    07/31   206    100.0                           100.0         100.0

                                                                           

  Sunday      08/01   207    100.0                           100.0         100.0

                                                                           

  Monday      08/02   208    100.0                           100.0         100.0

                                                                           

  Tuesday     08/03   209    100.0                           100.0         100.0

                                                                           

  Wednesday   08/04   210    100.0                           **99.9(a)**   100.0

                                                                           

  Thursday    08/05   211    100.0                           **99.9 (b)**  100.0

                                                                           

                                                                           
  ----------- ------- ------ --------- ---------- ---------- ------------- ---------

**\*NOAA-12 and NOAA-14 excluded because they are only recording STIP
data. This data is not recovered.**

**[Comments:]{.underline}**

(a) Rev 19842/W: G2A noisy; 99.2% recovered.

(b) Rev 19851/F: G4A noisy; 99.4% recovered 2DL.

EMOSS POC for this chart Angelique Riley

**[DTR Inf. (\*):]{.underline}**

NOAA-12 DTR 5A -Inoperative.

DTR 2A/B -Occasionally noisy and short

DTR 1A/B - Inoperative

NOAA-14 DTR 4A/B -Inoperative.

DTR 3B -Unreliable playbacks, Removed from operations.

DTR 2A -Inoperative, DOY/200

NOAA-15 DTR 5A/B - Inoperative

NOAA-16 DTR 5A/B -Inoperative

DTR 3A -safe state change 1B

DTR 4B --Inoperative 1/12/03

NOAA-17 DTR 5A/B-Inoperative 2/16/03 Anomaly

**[Acronyms:]{.underline}**

DL -- Drop lock(s) PE - Parity Error(s) DQR - Data Quality Report

BE - Bit Error(s) DAR - Data Accountability Report MFR - Multi-Function
Receiver

POES Engineering Contact List

[Government]{.underline}

Renee Smith-Dearing NOAA POES Constellation Lead 301-817-4117

Dong Han: NOAA, POES Payloads 301-817-4127

Keith Amburgy: NOAA, IJPS and POES Spacecraft Bus 301-817-4263

[Contractor]{.underline}

Jeff Devine: EMOSS, POES Contractor Lead 301-817-4020

Jim Walters: EMOSS, POES Payload Engineer 301-817-4033

Angelique Riley, EMOSS, POES Comm and DHS 301-817-4028

Carl Gliniak, EMOSS POES Power and Thermal 301-817-4207

Jim Sheperd, EMOSS POES Attitude Control 301-817-4030

Jon Woodward EMOSS, POES Flight Software C&CS 301-817-4019

Sally House EMOSS POES Payloads (in training) 301-817-4026