**POLAR Spacecraft Status As of: Tues, 30 Sept 03 17:00 EST**

*(changes from last week in bold border)*

+----------+--------+--------+--------+--------+---------+---------+
| **Subs   | ##     | **NOAA | **NOAA | **NOAA | **NOA   | ##### N |
| ystem/** | ### NO | -12D** | -14J** | -15K** | A-16L** | OAA-17M |
|          | AA-11H |        |        |        |         |         |
| **Com    |        | S      | S      | BACKUP | PRIMARY | PRIMARY |
| ponent** | S      | tandby | tandby | AM     | PM      | AM      |
|          | tandby | AM     | AM     |        |         |         |
|          | PM     |        |        | GAC    | GAC&LAC | GAC&LAC |
|          |        | STIP   | STIP   | data   | data    | data    |
|          | STIP   | data   | data   | only   |         |         |
|          | data   | only   | only   |        |         |         |
|          | only   |        |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **LA     | 09     | 05     | 12     | 05     | 0       | 6/24/02 |
| UNCHED** | /23/88 | /14/91 | /30/94 | /13/98 | 9/21/00 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **CNTL   | OBP2   | OBP2   | OBP2   | OBP2   | OBP2    | OBP2    |
| OBP**    |        |        |        |        |         |         |
|          |        |        | OBP1   |        |         |         |
|          |        |        | inope  |        |         |         |
|          |        |        | rative |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **BUS**  | A-BUS  | B-BUS  | B-BUS  | B-BUS  | B-BUS   | B-BUS   |
|          |        |        |        |        |         |         |
|          | XSU-1  | XSU-1  | XSU2   | XSU-1  | XSU-1   | XSU-1   |
|          |        |        | (XSU1  |        |         |         |
|          |        |        | inop)  |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **BUS    | NO     | NO     | NO     | NO     | NO      | NO      |
| VETO**   |        |        |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| *        | [RGYRO | [YGC   | [N     | [N     | #####   | #####   |
| *ADACS** | Mode]  | Mode]  | ominal | ominal | # [Nomi | # [Nomi |
|          | {.unde | {.unde | Mode]  | Mode]  | nal Mod | nal Mod |
|          | rline} | rline} | {.unde | {.unde | e]{.und | e]{.und |
|          |        |        | rline} | rline} | erline} | erline} |
|          | (Y,    | & Skew |        |        |         |         |
|          | Z      | gyro.  | Rgm    | Rg     | R       | R       |
|          | -Gyros |        | ode=Di | mode=M | gmode=D | gmode=D |
|          | F      | Ignore | sabled | onitor | isabled | isabled |
|          | ailed) | yaw    |        |        |         |         |
|          | R      | u      | Gyro   | Gyro-3 | Gyro    | Gyro    |
|          | educed | pdates | chans= | Of     | ch      | ch      |
|          | Gyro   | S/W    |        | f/Anom | ans=AAA | ans=BBB |
|          | S/W.   | patch  | SS     |        |         |         |
|          |        | p      | check  | Gyro   | Gyro3   |         |
|          | X &S   | lanned | Di     | cha    | des     |         |
|          | gyros  | for    | sabled | ns=AAB | elected |         |
|          | only   | 10/1   | when   |        |         |         |
|          |        | Switch | mo     | Rgyro  | Gyro    |         |
|          |        | back   | de=YGC | test   | TOAR    |         |
|          |        | to X   |        | planed | 427     |         |
|          |        | gyro   |        | but    |         |         |
|          |        | p      |        | de     |         |         |
|          |        | lanned |        | layed. |         |         |
|          |        | 10/2   |        |        |         |         |
|          |        |        |        |        |         |         |
|          |        | RG     |        |        |         |         |
|          |        | mode=M |        |        |         |         |
|          |        | onitor |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI    | PRI     | PRI     |
|          |        |        |        |        |         |         |
|          | BU     | BU     | BU     | ETCUP  | ETCUP   | ETCUP   |
|          | random | random | random | -8     | --5.1   | -1 msec |
|          | e      | e      | e      | mSec   | mSec    |         |
|          | nables | nables | nables |        |         | Update  |
|          |        |        | ETCUP  |        |         | planned |
|          | ETCUP  | Update | --7.3  |        |         |         |
|          | +70    | p      | Msec   |        |         |         |
|          | mSecs  | lanned |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2      | 2       | 2       |
| DIV**    |        |        |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **MIRP** | ON     | ON     | Ex     | Ex     | E       | I       |
|          |        |        | ternal | ternal | xternal | nternal |
|          |        |        | Synch  | Synch  | Sync    | Synch   |
|          |        |        |        | R      |         |         |
|          |        |        | R      | ephase | Re      | Rephase |
|          |        |        | ephase | Daily. | phasing | Enabled |
|          |        |        | Daily  |        | Daily   |         |
|          |        |        |        |        | at      |         |
|          |        |        |        |        | 04:30Z  |         |
|          |        |        |        |        | since   |         |
|          |        |        |        |        | 9/26    |         |
+----------+--------+--------+--------+--------+---------+---------+
| **TIP    | 1      | 1      | 1      | 2      | 1       | 1       |
| SIDE**   |        |        |        |        |         |         |
|          |        |        |        | ####   | Analog  |         |
|          |        |        |        | #### S | telem   |         |
|          |        |        |        | ince 4 | d       |         |
|          |        |        |        | /24/03 | rifting |         |
+----------+--------+--------+--------+--------+---------+---------+
| **DTRs** | 1A,    | 1, 3,  | 1, 2B, | 1, 2,  | 1       | 1,2,3,4 |
|          | 2B, 3, | 4, 5B  | 3A, 5  | 3, 4   | ,2,3,4A |         |
|          | 4A     |        | Safe   | Saf    |         | Safes   |
|          | Safes  | Safe   | state- | estate | Sa      | tate=1B |
|          | tate - | state- | 1B     | 1B EOT | festate |         |
|          | 2B,    | 1B     |        |        | 3A      | D       |
|          |        |        |        |        |         | TR2-SSR |
|          |        |        |        |        | 4B TOAR |         |
|          |        |        |        |        | 418     | DTR5    |
|          |        |        |        |        |         | TOAR    |
|          |        |        |        |        | (STIP   | 420     |
|          |        |        |        |        | only)   |         |
+----------+--------+--------+--------+--------+---------+---------+
| **VTX**  | OFF    | #1     | OFF    | #1     | INOP    | #2      |
|          |        |        |        |        |         |         |
| (APT     |        | 137.50 | Since  | 137.50 | OFF     | 137.62  |
| data)    |        | MHZ    | 8      | MHZ    | since   | MHZ     |
|          |        |        | /14/02 |        | 1       |         |
|          |        |        |        |        | 1/15/00 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **BTX**  | #2     | #1     | #2     | #1     | #1      | ###     |
|          |        |        |        |        |         | #### #2 |
|          | 137.77 | 136.77 | 137.77 | 137.35 | 137.35  |         |
|          | MHZ    | MHZ    | MHZ    | MHZ    | MHZ     | 137.77  |
|          |        |        |        |        |         | MHZ     |
+----------+--------+--------+--------+--------+---------+---------+
| **STX**  | 3 --   | 1 --   | 3 --   | 1, 2,  | 1 --    | 3 --    |
|          | TIP    | HRPT;  | HRPT   | 3 -    | HRPT;   | HRPT    |
| #        |        |        |        | deg    |         |         |
| 1=1698.0 | 1,2 -  | 2,3 -  | 2, 1   | raded; | 2--     | TOAR424 |
| mhz      | Pl     | Pl     | --     |        | Pl      | low     |
|          | ayback | ayback | Pl     | ###    | ayback; | power   |
| #        |        |        | ayback | ### 2  |         |         |
| 2=1702.5 |        |        |        | Omni-- | 4 --    | 1&2     |
| mhz      |        |        |        | HRPT;  | P       | P       |
|          |        |        |        |        | layback | layback |
| #        |        |        |        | #      |         |         |
| 3=1707.0 |        |        |        | #####  | 3 low   | 4 --    |
| mhz      |        |        |        |        | power   | TIP     |
|          |        |        |        | #      | unused  |         |
| #        |        |        |        | #####  |         | STX4    |
| 4=2247.5 |        |        |        | 4- Pla |         | tests   |
| mhz      |        |        |        | yback  |         | at Sval |
+----------+--------+--------+--------+--------+---------+---------+
| #        | [Array | [Ar    | [Array | [Array | [Array  | [Array  |
| ## POWER | Off    | rayOff | Off    | Off    | Off     | Off.    |
|          | -30]   | -60]   | -55]   | -45]   | -4      | --3     |
| (Array   | {.unde | {.unde | {.unde | {.unde | 0]{.und | 5]{.und |
| offset,  | rline} | rline} | rline} | rline} | erline} | erline} |
| charge   |        |        |        |        |         |         |
| and      | Since  | since  | Since  | Since  | Since   | Since   |
| eclipse  | 6      | 7      | 8      | 1      | 7/16/02 | 7/1/02  |
| states,  | /19/02 | /30/03 | /21/03 | /25/01 |         |         |
| sun      |        |        |        |        | Eclipse | Eclipse |
| angle)   | E      | FULL   | FULL   | FULL   | all     | all     |
|          | clipse | SUN    | SUN    | SUN    | year    | year    |
|          | all    |        |        |        |         |         |
|          | year   | Sun    | Sun    | Sun    | Sun     | Sun     |
|          |        | Angle  | Angle  | Angle  | Angle   | Angle   |
|          | Sun    | at 18  | at 22  | at 15  | 56      | at 68   |
|          | angle  | trend  | bo     | trend  |         |         |
|          | 78     | down   | ttomed | down   | Do      | Steady  |
|          |        | to 16  | out    | to 14  | wntrend | Trend   |
|          | Steady | mi     | steady |        | to 54   |         |
|          | Trend  | d-Oct. | trend  | m      |         | Batts   |
|          |        | Sun    |        | id-Oct | At end  | 1-3=    |
|          | Batts  | sensor | Batts  | 03     | of Oct  | LRC     |
|          | 1-3=   | s      | 1-3=   |        |         |         |
|          | LRC    | hading | LRC    | Batts  | Batts   | V/T=    |
|          |        |        |        | 1-3=   | 1-3=    | 4/8     |
|          | VT1    | 9      | Batt   | LRC    | LRC     |         |
|          | ,2=6/8 | /12/03 | 1&3V/  |        |         | Batt2A  |
|          |        | to1    | T=8/11 | V      | V/T=4/8 | runs    |
|          | VT3 =  | 2/5/03 |        | /T=7/9 |         | warm    |
|          | 8/11   |        | Batt2  |        | Batt2A  |         |
|          |        | Batts  | V      |        | runs    |         |
|          | Charge | 1      | T=9/11 |        | warm    |         |
|          | state  | &2=LRC | )      |        |         |         |
|          | safe   |        |        |        |         |         |
|          |        | V/T=4  | Shunt  |        |         |         |
|          | trip   |        | Degra  |        |         |         |
|          | di     |        | dation |        |         |         |
|          | sabled |        |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| *        | INOP   | N      | DE     | N      | I       | ###     |
| *AVHRR** |        | ominal | GRADED | ominal | MPROVED | Nominal |
|          | Failed |        |        |        | since   |         |
|          | Power  |        | Scan   | Rare   | 9/29    | 3A-B    |
|          | S      |        | motor  | Scan   |         | switch  |
|          | upply. |        | e      | motor  | Scan    | enabled |
|          | P      |        | rratic | s      | Motor   |         |
|          | owered |        | perfo  | urges. | current |         |
|          | Off    |        | rmance | Last   | anomaly |         |
|          | since  |        | STAT   |        | TOAR    |         |
|          | 1994   |        | US=RED | In     | 430     |         |
|          |        |        |        | cident | ge      |         |
|          |        |        |        | 8/9/03 | nerated |         |
|          |        |        |        |        |         |         |
|          |        |        |        |        | Chan 3B |         |
|          |        |        |        |        | in use  |         |
+----------+--------+--------+--------+--------+---------+---------+
| **A      |        |        |        | ON     | ON      | ON      |
| MSU-A1** |        |        |        |        |         |         |
|          |        |        |        | Ch14   | TOAR    | Chan-3  |
|          |        |        |        | inope  | 415 on  | noise   |
|          |        |        |        | rative | primary |         |
|          |        |        |        |        | PLLO    | TOAR    |
|          |        |        |        | Ch11   | chans   | 414 on  |
|          |        |        |        | inope  | 9-14    | PLLO    |
|          |        |        |        | rative | bias    | chans   |
|          |        |        |        |        | shift.  | 9-14    |
|          |        |        |        | Cold   |         | bias    |
|          |        |        |        | Temps  | TOAR    | shift.  |
|          |        |        |        |        | 417 on  |         |
|          |        |        |        |        | Backup  | I       |
|          |        |        |        |        | PLLO    | nactive |
|          |        |        |        |        | inop    | TOAR    |
|          |        |        |        |        |         | 421 on  |
|          |        |        |        |        |         | Ch      |
|          |        |        |        |        |         | annel-7 |
|          |        |        |        |        |         | RFI     |
+----------+--------+--------+--------+--------+---------+---------+
| **A      |        |        |        | ON     | ON      | ON      |
| MSU-A2** |        |        |        |        |         |         |
|          |        |        |        | Cold   | Space   |         |
|          |        |        |        | Temps  | Pos     |         |
|          |        |        |        |        | ition-2 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **       |        |        |        | ON     | ON      | ON      |
| AMSU-B** |        |        |        |        |         |         |
|          |        |        |        | Bias   | Space   |         |
|          |        |        |        | in All | Pos     |         |
|          |        |        |        | Chans. | ition-3 |         |
|          |        |        |        |        |         |         |
|          |        |        |        | Motor  |         |         |
|          |        |        |        | c      |         |         |
|          |        |        |        | urrent |         |         |
|          |        |        |        | s      |         |         |
|          |        |        |        | urges, |         |         |
|          |        |        |        | most   |         |         |
|          |        |        |        | recent |         |         |
|          |        |        |        | 8      |         |         |
|          |        |        |        | /31/03 |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| ### HIRS | #####  | INOP   | ON     | ON     | ON      | ON      |
|          | ## OFF |        |        |        |         |         |
|          |        | Filter | Opera  | Opera  | Nominal | 1 Pixel |
|          | #####  | Wheel  | tional | tional |         | cross   |
|          | ### Fi | turned |        |        |         | track   |
|          | lter W | OFF    |        | FW in  |         | misal   |
|          | heel A | 10/    |        | Hi     |         | ignment |
|          | nomaly | 17/02. |        | power, |         | .       |
|          |        | Elect  |        |        |         |         |
|          |        | ronics |        | FW     |         |         |
|          |        | On     |        | H      |         |         |
|          |        |        |        | eaters |         |         |
|          |        |        |        | OFF    |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | Filter |         |         |
|          |        |        |        | Motor  |         |         |
|          |        |        |        | c      |         |         |
|          |        |        |        | urrent |         |         |
|          |        |        |        | s      |         |         |
|          |        |        |        | urges. |         |         |
|          |        |        |        | Last   |         |         |
|          |        |        |        | in     |         |         |
|          |        |        |        | cident |         |         |
|          |        |        |        | 9      |         |         |
|          |        |        |        | /30/03 |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **MSU**  | ###    | INOP   | ON     |        |         |         |
|          | # INOP |        |        |        |         |         |
|          |        | Scan   | Scan   |        |         |         |
|          | OFF,   | Motor  | motor  |        |         |         |
|          | A      | OFF    | and    |        |         |         |
|          | ntenna | since  | a      |        |         |         |
|          | Failed | 3      | ntenna |        |         |         |
|          |        | /12/03 | pr     |        |         |         |
|          |        |        | oblems |        |         |         |
|          |        | Elect  |        |        |         |         |
|          |        | ronics |        |        |         |         |
|          |        | ON.    |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **SSU**  | ON     |        | ON     |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **DCS**  | ON     | ON     | ON     | ON     | ON      | ON      |
|          |        |        |        |        |         |         |
|          |        |        |        |        | Nominal | Nominal |
+----------+--------+--------+--------+--------+---------+---------+
| **SARR** | ON     |        | ON     | ON-A   | ON-A    | ON-A    |
|          |        |        |        |        |         |         |
|          | Low    |        |        | All    | All AGC | Nominal |
|          | signal |        |        | AGC    | Mode    |         |
|          |        |        |        | Mode   |         | All AGC |
|          |        |        |        |        | (B-side | Mode    |
|          |        |        |        | Interm | in FG   |         |
|          |        |        |        | ittent | mode)   |         |
|          |        |        |        | fa     |         |         |
|          |        |        |        | ilures | 243 MhZ |         |
|          |        |        |        | for    | INOPE   |         |
|          |        |        |        | 243MHz | RATIVE. |         |
|          |        |        |        | A&B    |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **SARP** | ON     |        | OFF    | ON     | ON      | ON      |
|          |        |        |        |        |         |         |
|          | N      |        | Failed | N      | Nominal | Nominal |
|          | ominal |        | Power  | ominal |         |         |
|          |        |        | Supply |        | RCVR    |         |
|          |        |        |        | RCVR   | B/W = 2 |         |
|          |        |        |        | B/W =  |         |         |
|          |        |        |        | 2      |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **SEM**  |        | ON     | ON     | ON     | ON      | ON      |
|          |        |        |        |        |         |         |
|          |        | El     | El     | N      | Nominal | Nominal |
|          |        | ec-CH- | ec-CH- | ominal |         |         |
|          |        | HVPS=4 | HVPS=0 |        | E-CDEM  | E-CDEM  |
|          |        |        |        | E      | -HVPS=4 | -HVPS=2 |
|          |        | Pr     | Pr     | -CDEM- |         |         |
|          |        | ot-CH- | ot-CH- | HVPS=2 | P-CDEM  | P-CDEM  |
|          |        | HVPS=0 | HVPS=0 |        | -HVPS=4 | -HVPS=3 |
|          |        |        |        | P      |         |         |
|          |        |        | 1 of 4 | -CDEM- |         |         |
|          |        |        | Tele   | HVPS=0 |         |         |
|          |        |        | scopes |        |         |         |
|          |        |        | inope  |        |         |         |
|          |        |        | rative |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **SBUV** | INOP   |        | ON     |        | ON      | ON      |
|          |        |        |        |        |         |         |
|          | G      |        | Occa   |        | Backup  | Nominal |
|          | rating |        | sional |        | D       |         |
|          | motor  |        |        |        | iffuser | Anode   |
|          | OFF    |        | R      |        | in use  | Mode    |
|          | since  |        | educed |        | since   |         |
|          | 5      |        | G      |        | 6/      |         |
|          | /29/03 |        | rating |        | 16/03.) |         |
|          |        |        | Drive  |        |         |         |
|          | Elect  |        | Motion |        | Primary |         |
|          | ronics |        |        |        | =TOAR   |         |
|          | and    |        | R      |        | 426     |         |
|          | Heater |        | educed |        |         |         |
|          | remain |        | oper   |        | antenna |         |
|          | ON     |        | ations |        | deploy  |         |
|          |        |        | s      |        | a       |         |
|          |        |        | tarted |        | nomaly, |         |
|          |        |        | 6/5/03 |        |         |         |
|          |        |        |        |        | AMSU    |         |
|          |        |        |        |        | EMI     |         |
|          |        |        |        |        | causing |         |
|          |        |        |        |        | erratic |         |
|          |        |        |        |        | B       |         |
|          |        |        |        |        | ehavior |         |
|          |        |        |        |        | in PMT  |         |
|          |        |        |        |        | cathod, |         |
|          |        |        |        |        | range 3 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **       |        |        |        | N/A    | ON      | ON      |
| SADPOS** |        |        |        |        |         |         |
|          |        |        |        |        | ENABLED | ENABLED |
|          |        |        |        |        |         |         |
|          |        |        |        |        | MFactor |         |
|          |        |        |        |        | =50%    |         |
+----------+--------+--------+--------+--------+---------+---------+
| **T      | N      | N      | N      | HIRS   | Nominal | TCE3H   |
| HERMAL** | ominal | ominal | ominal | FWheel |         | Batt 2A |
|          |        |        |        | heater | TCE24   | heater  |
| Heaters, |        |        |        | OFF    | turned  | turned  |
| louvers  |        |        |        | 2      | off     | off     |
|          |        |        |        | /13/02 | (AVHRR  | 8/26/03 |
| TCE's    |        |        |        |        | H&L)    | TOAR    |
|          |        |        |        | TCE2   | 9/23/03 | 428     |
|          |        |        |        | 4L&25L |         |         |
|          |        |        |        | (HIRS  |         |         |
|          |        |        |        | &      |         |         |
|          |        |        |        | AVHRR) |         |         |
|          |        |        |        | failed |         |         |
|          |        |        |        | 5      |         |         |
|          |        |        |        | /13/98 |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | RCE    |         |         |
|          |        |        |        | ther   |         |         |
|          |        |        |        | mostat |         |         |
|          |        |        |        | failed |         |         |
|          |        |        |        | 5      |         |         |
|          |        |        |        | /13/98 |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | Cold   |         |         |
|          |        |        |        | season |         |         |
+----------+--------+--------+--------+--------+---------+---------+
|          | *      | *      | *      | *      | **N16** | **N17** |
|          | *N11** | *N12** | *N14** | *N15** |         |         |
+----------+--------+--------+--------+--------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-11 No changes since previous report.

NOAA-12. Spacecraft remains in YGC mode with skew gyro operating in
place of X-gyro. A software patch that disables yaw

updates by branching around yaw update processing flight code has been
generated and successfully simulated. (A previous memory load designed
to perform a similar function resulted in a bus switch on the TTS that
was later confirmed to be valid.) This patch will be uploaded to the N12
spacecraft on 1 Oct, at 17:30Z and remain in effect until early December
when the sun angle rises back above 22 degs (the point that the sun
sensor is no longer shaded under the current solar array offset). After
the software patch, data will be analyzed to ensure the code works as it
was designed after which the gyro will be commanded back to X (from
Skew) on 2 Oct at 17:00Z. In preparation for this software patch, on 24
Sept, EMOSS engineer Jon Woodward performed memory dumps on two
different locations (12E9 and 24F2) where the load will reside. He and
Jim Sheperd are EMOSS POC's for the remainder of theses reconfiguration
operations.

Because of the increasing importance of the N12 AVHRR data stream, a new
process to incorporate N12's Time Stamp Files has been initiated by
EMOSS POC Jeff Devine. This process will provide the precision time
offset data that has been used on N14, 15, 16 and 17 to minimize
spacecraft clock drift (by determining what that drift is and then
performing daily ETCUP's to compensate). This spacecraft was not
incorporated with the other TSF process because the sparseness of its
passes (sometimes less than 1 per day) corrupted the process for the
other spacecraft. Recently, additional N12 supports have been scheduled
(3-4 passes daily) which will allow N12 to also be incorporated into
this TSF process. In addition, a clock update is planned for N12 within
the next 2 weeks where between 750 and 1000 mSecs (final number still
TBD) will be added. Jim Sheperd is EMOSS POC for this operation. The
clock drift will then be observed and, once it drifts back to within 1
AVHRR pixel offset (+/- 75 mSecs) a daily ETCUP will be specified and
implemented to ensure that the clock stays within this boundary
indefinitely.

NOAA-14: The N14 AVHRR scan motor current was steady to slightly higher
during the previous week (illustration 1). Imagery

remains severely degraded (illustration 2). Conversely, the N14 power
subsystem was nominal during the past week with a steady bus voltage and
a shunt which is not operating at peak capacity.

NOAA-15: AVHRR, and AMSU-B motor currents were nominal during the past
week with no "out of family" motor current

surges. A HIRS filter motor surge began later yesterday (29 Sept)
evening (illustration 3) and, if typical of this

incident, should resolve itself with 2-3 days. Imagery does not appear
to be adversely affected (illustration 4)

AMSU temperatures continue to trend lower past the "historically" low
values registered during the past three weeks (illustration 5). Although
in most cases the trend downward has begun to slow, these temps are
expected to continue falling as mid-October when the sun angle on the
spacecraft "bottoms out" at 14 degrees (NOTE: comparison of current
"record temps" relative to past performance is skewed by the change in
values that the TIP swap brought on after being implemented in April
03.) The implications of these low temps are not readily apparent as no
reports of degraded imagery from any of these instruments has been
reported to EMOSS nor is there any imagery degradation observable in
imagery produced on the NOAA PIDES system (illustrations 6).

The Rgyro test remains postponed with no date yet planned as does a plan
to put N15 into YGC mode for several revs in order to get performance
data. A meeting to discuss this test is planned for 1 Oct at 13:00
local. The meet me number is 888-625-1624 and the pass code is 47413 for
those who wish to attend.

NOAA-16: After slowly trending down (improving) over the past week, the
N16 AVHRR scan motor current (and imagery quality)

made an abrupt return to nominal on 29 Sept at 02:13Z, going so far as
to fall below its previous nominal range (illustration 7). Whether this
can in any way be attributed to turning off TCE24 in order that the
instrument would heat up and reduce lubricant viscosity remains to be
ascertained. However, in desiring to not "mess with success" this TCE
will remain off into the foreseeable future. Currently, all AVHRR temps
have risen (and stabilized at) an average of 3 degrees (illustration 8).
However, in order to ensure that these temperatures do not inadvertently
run up into a red high condition while its cooling capability is
unavailable, a procedure is on the SOCC floor instructing controller to
immediately turn TCE24 back on if a Red High limit condition occurs. In
addition, to further reduce the risk of an excess temperature rise,
EMOSS engineer Jon Woodward will be generating an on-board macro which
will also turn the TCE24 back on if the temperature exceeds 27 degrees.
Will Kent has generated and submitted a TOAR (430) on this anomaly

N16 continues to operate with the MIRP rephase disabled. On Friday, 26
Sept, the N16 rephase enable command was incorporated into the stored
command table (and eliminated from the operators twice daily routine).
Coincidentally, on that same day, the synch delta value preceded the
scan motor current improvement by returning to (and remaining at) near
nominal values (illustrations9a and 9b). This new rephase configuration
will now ensure that MIRP rephase is enabled at 04:30Z each day for 10
seconds. If, during that window, the synch delta is above 800, this will
cause an actual rephase to occur (with its resultant loss of data). If,
when rephase is enabled the synch delta is below 800, nothing will
happen. Questions about when rephase should be once again permanently
enabled have recently arisen. This question has provoked a discussion
among NOAA and EMOSS engineers about whether it should ever be
permanently re-enabled again or if it should always operate disabled
except for the once per day enabling at 04:30Z. The discussion not only
centers around N16 but as an operational concept for all spacecraft with
an operational AVHRR (most of which are already flying with rephase
disabled). Tina Baucom and Jim Walters are EMOSS POC's for this
discussion.

Also improving during the past week was the performance of the N16
Y-Gyro which was affected by the AVHRR anomaly between 17 and 19 Sept,
experiencing significantly more perturbation than is usual because of
the momentum provided by the anomalous AVHRR scan motor (illustration
10). No actions were required to alleviate this situation and the gyro
has remained nominal for over a week.

During the past week (illustration 11) there were no additional "out of
family" yaw updates and the current XA, YA, ZA gyro channel assignments
(reconfigured on 29 July) continue to maintain a stable profile since
being selected on 29 Jul.

NOAA-17: EMOSS engineers supported a short turnaround request to turnon
STX-4 for 1 orbit on 24 Sept for testing purposes.

After a single rev, the transmitter was turned off. The transmitter
performed nominally (illustration 12) although EMOSS has not received
any information on the results of this test.

An unusual occurrence appeared in telemetry regarding STX-4 on Sat, 27
Sept. At approximately 12:00Z, telemetry

shows STX-4 temperature to be registering a value which would normally
be associated with power on (illustration 12). However, there was no
scheduled turnon of STX-4 on 27 Sept and telemetry does not show a power
or status reading that would indicate that STX-4 was turned on at that
time. It is possible that this may be a PACS problem that has appeared
recently and has been giving less than nominal telemetry readings.
Angelique Riley is investigating for EMOSS.

EMOSS engineer Jim Shepard continues to investigate the occasional "out
of family" change in operating profile on N17's Gyro 1 and 3 motor
current (illustration 13). No autonomous reconfigurations occurred
because of this small surge nor did any limits flag. In addition, the
components settled down (although at slightly higher levels) several
hours later and other ADACS telemetry appeared nominal.

To maintain the command clock offset to within +/-75 mSecs (1 AVHRR
Pixel) N17 will have a spacecraft clock adjustment of between --50 to
-75 msecs (actual number TBD) within the next two weeks. In addition, to
further reduce clock drift, the daily ETCUP on N17 will be changed from
its current --1 mSec daily to --1.7 mSecs. (Determining these values to
such precision was made possible by the Time Stamp File process created
by EMOSS engineers). Jim Sheperd is POC for the clock adjustments.

NOAA-N NOAA-N data base has not yet been delivered and is required to
support the end to end test currently scheduled for late

October.

EMOSS engineers supported a NOAA meeting to discuss the problems and
potential solutions regarding schedule conflicts between DMSP launch,
GOES maneuvers and POES end-to-end (and launch) test. One solution under
consideration is to use the training room in building 4.5 as a
pseudo-LCR where all monitoring functions could be performed. Commanding
however would still be required to take place within the SOCC area of
building 4 and communications between those two areas would of course be
required.

MISC EMOSS engineer have started to generate an engineering operations
document with pre-defined operations procedures

for the AET to follow during contingency operations. Once these
procedures are completed they will be incorporated into a spacecraft
specific CROH. This week, KLM spacecraft Data Authentication Un it (DAU)
contingencies were reviewed.

EMOSS engineers supported the MOWG on 29 Sept 03

![](media/image1.wmf){width="5.997916666666667in"
height="4.925694444444445in"}**Illustration 1: N14 AVHRR Scan Motor
Health**

![](media/image2.png){width="3.4125in" height="3.625in"}

####### Illustration 2: N14 Most recent AVHRR Image 30 Sept 03

![](media/image3.wmf){width="7.25in" height="5.49375in"}

### Illustration 3: N15 HIRS Surge started

![](media/image4.png){width="3.875in" height="3.14375in"}

**Illustration 4: N15 most recent HIRS Image (with filter motor current
surging)**

![](media/image5.wmf){width="8.25in" height="6.251388888888889in"}

**Illustration 5: N15 AMSU Temps Continuing to Fall**

**(minimum trend vs current history)**

![](media/image6.png){width="2.375in" height="7.491666666666666in"}

# AMSU-A1 AMSU-A2 AMSU-B

**Illustration 6: AMSU Imagery Analysis to determine if cold
temperatures affect imagery. (All three images, from 30 Sept 17:10Z**

![](media/image9.wmf){width="7.0in" height="4.910416666666666in"}

**Illustration 7: N16 AVHRR Scan Motor Current Performance the past 10
days and most recent image (30 Sept 16:15Z)**

![](media/image11.wmf){width="8.25in" height="6.251388888888889in"}

**Illustration 8: N16 AVHRR Thermal (and Patch Power) Analysis**

![](media/image12.wmf){width="8.375in" height="6.2444444444444445in"}

**Illustration 9a: N16 AVHRR Synch Delta Analysis (Mean)**

![](media/image13.wmf){width="8.5in" height="6.3375in"}

**Illustration 9b: N16 AVHRR Synch Delta Analysis (MAXIMUMS)**

![](media/image14.wmf){width="8.125in" height="6.058333333333334in"}

Illustration 10: N16 Gyro Analysis showing some of the effects of the
AVHRR anomaly

![](media/image15.wmf){width="8.125in" height="6.469444444444444in"}

Illustration 11: N16 Yaw Determination and Control Analysis, still
nominal...

![](media/image16.wmf){width="8.25in" height="6.240277777777778in"}

**Illustration 12: N17 STX-4 Analysis. Note the "nominal" temperature at
a time when the transmitter was not actually turned on.**

![](media/image17.wmf){width="8.25in" height="6.788888888888889in"}

# 

**Illustration 13: N17 ADACS Gyro Motor analysis**

(under investigation by Jim Sheperd

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING September 26, 2003

  ----------- --------- ---------- ---------- ---------- ---------- ----------
  DAY/DATE    NOAA-11   NOAA-12    NOAA-14    NOAA-15    NOAA-16    NOAA-17

  FRI. 09/19  -1634     -511 msec  +003 msec  +044 msec  +009 msec  +036 msec
              msec                                                  

  SAT. 09/20  -1564     -515 msec  +003 msec  +043 msec  +010 msec  +038 msec
              msec                                                  

  SUN. 09/21  -1794     -522 msec  +004 msec  +042 msec  +010 msec  +039 msec
              msec                                                  

  MON. 09/22  -1824     -529 msec  +002 msec  +041 msec  +010 msec  +040 msec
              msec                                                  

  TUE. 09/23  -1654     -536 msec  +002 msec  +040 msec  +011 msec  +042 msec
              msec                                                  

  WED. 09/24  -984 msec -541 msec  +003 msec  +043 msec  +011 msec  +042 msec

  THU. 09/25  -1314     -547 msec  +004 msec  +039 msec  +011 msec  +042 msec
              msec                                                  
  ----------- --------- ---------- ---------- ---------- ---------- ----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-12: As of 09/03/02 the TIP clock is corrected daily by +70 msec to
compensate for drift.

ADDED 1250 mSecs to spacecraft command clock on 6 June

NOAA-14: As of 04/23/03 the TIP clock is corrected daily by ---7.3 msec
to compensate for drift.

SUBTRACTED 150 msec from spacecraft command on 10 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.

NOAA-16: As of 04/23/03 the TIP clock is corrected daily by --5.1 msec
to compensate for drift.

SUBTRACTED 100 msec from spacecraft command clock on 10 June.

NOAA-17: As of 04/23/03 the TIP clock is corrected daily by -1 msec to
compensate for drift.

> SUBTRACTED 100 msec from spacecraft command clock on 10 June.

![](media/image18.wmf){width="6.75in" height="3.9340277777777777in"}

**Weekly N17 CPU Error Scrubs**

![](media/image19.wmf){width="7.75in" height="2.3520833333333333in"}

![](media/image20.wmf){width="7.75in" height="5.8in"}

**NOAA-17 Scrubber Hits from 22 Sep 2003 through 28 Sep 2003:**

![](media/image21.png){width="8.121527777777779in"
height="5.019444444444445in"}

### Red/Circle = CPU#1 Black/X = CPU#2

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

September 19, 2003 through September 25, 2003

JDAY 262-268

  ----------- ------- ------ ------------- --------- --------- ------------- -------------
                             NOAA15        NOAA14    NOAA11    NOAA16        NOAA17

  Friday      09/19   262    100.0         100.0     100.0     **99.9(a)**   **99.9(b)**

                                                                             

  Saturday    09/20   263    **99.9(c)**   100.0     100.0     **99.9(d)**   **99.9(e)**

                                                                             

  Sunday      09/21   264    100.0         100.0     100.0     100.0         100.0

                                                                             

  Monday      09/22   265    **99.9(f)**   100.0     100.0     100.0         100.0

                                                                             

  Tuesday     09/23   266    **99.9(g)**   100.0     100.0     **99.9(h)**   **99.9(i)**

                                                                             

  Wednesday   09/24   267    100.0         100.0     100.0     100.0         100.0

                                                                             

  Thursday    09/25   268    100.0         100.0     100.0     100.0         100.0

                                                                             

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

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

(a) Rev 15417/W: L2A noisy; 90.6% recovered.

(b) Rev 06424/F: L1A noisy; 88.3% recovered.

(c) Rev 27820/F: G4B noisy; 99.2% recovered.

(d) Rev 15435/F: G2B noisy; 99.3% recovered 9DL 8PE.

(e) Rev 06436/F: G2B noisy; 99.1% recovered.

(f) Rev 27862/F: G4A noisy; 98.7% recovered.

(g) Rev 27870/F: G4B noisy; 98.9% recovered.

(h) Rev 15481/W: G4A noisy; 99.4% recovered 1DL.

(i) Rev 06478/W: G2B noisy; 99.9% recovered.

### 

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

NOAA-11 DTR 1B -Inoperative.

> DTR 2A/B -Frequently noisy

DTR 4B -Frequently noisy

DTR 5A/B -Inoperative

NOAA-12 DTR 5A -Inoperative.

DTR 2B -Occasionally noisy and short

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