**POLAR Spacecraft Status As of: Tues, 30 Mar 04 16:00 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   |        |         | C       |
|          |        |        | inope  |        |         | PU1Errr |
|          |        |        | rative |        |         | TOAR434 |
|          |        |        |        |        |         |         |
|          |        |        |        |        |         | CPU2    |
|          |        |        |        |        |         | Errors  |
|          |        |        |        |        |         | 2/8/04  |
+----------+--------+--------+--------+--------+---------+---------+
| **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,    | Gyro   |        |        |         |         |
|          | Z      | cha    | Rgm    | Rg     | R       | R       |
|          | -Gyros | ns=XYZ | ode=Di | mode=M | gmode=D | gmode=D |
|          | F      |        | sabled | onitor | isabled | isabled |
|          | ailed) | Yaw    |        |        |         |         |
|          | R      | u      | Gyro   | Gyro-3 | Gyro    | Gyro    |
|          | educed | pdates | cha    | Of     | ch      | ch      |
|          | Gyro   | di     | ns=XYZ | f/Anom | ans=AAA | ans=AAB |
|          | S/W.   | sabled |        |        |         |         |
|          |        | 1      | SS     | Gyro   | Gyro3   | swapped |
|          | X &S   | 0/1/03 | check  | cha    | des     | from    |
|          | gyros  |        | Di     | ns=AAB | elected | BBB     |
|          | only   | RG     | sabled |        |         | 3/25    |
|          |        | mode=M | when   | N2 Low | Gyro3   | D       |
|          |        | onitor | mo     | PSI    | TOAR    | eselect |
|          |        |        | de=YGC | i      | 427     | Gyro3   |
|          |        | Excess |        | nvalid |         | TOAR    |
|          |        | yaw    |        |        |         | 436     |
|          |        | values |        | S/W    |         |         |
|          |        |        |        | upload |         |         |
|          |        | Plan   |        | 3/11   |         |         |
|          |        | switch |        |        |         |         |
|          |        | back   |        | RGyro  |         |         |
|          |        | to     |        | Tests  |         |         |
|          |        | N      |        | 4/19   |         |         |
|          |        | ominal |        |        |         |         |
|          |        | 4/2    |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI    | PRI     | PRI     |
|          |        |        |        |        |         |         |
|          | BU     | BU     | BU     | daily  | Daily   | Daily   |
|          | random | random | random | bias   | Bias    | Bias    |
|          | e      | e      | e      | -8     | --5.5   | --3     |
|          | nables | nables | nables | mSec   | mS      | mSec    |
|          |        |        | daily  |        |         |         |
|          | daily  | daily  | bia    |        |         | added   |
|          | bias   | bi     | s--7.0 |        |         | 125 mS  |
|          | +      | as+6.5 | mS     |        |         | 2/24    |
|          | 70mSec | mS     |        |        |         |         |
|          | (c     |        |        |        |         |         |
|          | ontrol | -500   |        |        |         |         |
|          | side   | mS     |        |        |         |         |
|          | only)  | drop   |        |        |         |         |
|          |        | 1/17   |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2      | 2       | 2       |
| DIV**    |        |        |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **MIRP** | ON     | Ex     | Ex     | Ex     | E       | E       |
|          |        | ternal | ternal | ternal | xternal | xternal |
|          |        | Synch  | Synch  | Synch  | Sync    | Sync    |
|          |        |        |        | R      |         |         |
|          |        | R      | R      | ephase | Rephase | Rephase |
|          |        | ephase | ephase | Daily. | Daily   | Enabled |
|          |        | E      | Daily  |        |         |         |
|          |        | nabled |        |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **TIP    | 1      | 1      | 1      | 2      | 1       | 1       |
| SIDE**   |        |        |        |        |         |         |
|          |        |        |        | ###### | Analog  |         |
|          |        |        |        | ## [Si | telem   |         |
|          |        |        |        | nce 4/ | d       |         |
|          |        |        |        | 24/03] | rifting |         |
|          |        |        |        | {.unde |         |         |
|          |        |        |        | rline} | AVHRR   |         |
|          |        |        |        |        | Scan    |         |
|          |        |        |        | Ch     | motor   |         |
|          |        |        |        | annels | DWELL   |         |
|          |        |        |        | 224    | test    |         |
|          |        |        |        | -227   | 3/24    |         |
|          |        |        |        | i      |         |         |
|          |        |        |        | nvalid |         |         |
|          |        |        |        | TOAR   |         |         |
|          |        |        |        | 432    |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **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       |
|          |        |        |        | DTR-5  |         | TR2-SSR |
|          |        |        |        | test   | 4B TOAR |         |
|          |        |        |        | 3/1/04 | 418     | DTR5    |
|          |        |        |        |        |         | TOAR    |
|          |        |        |        | inconc | (STIP   | 420     |
|          |        |        |        | lusive | only)   |         |
|          |        |        |        |        |         | DTR4A   |
|          |        |        |        |        |         | tests   |
+----------+--------+--------+--------+--------+---------+---------+
| **VTX**  | OFF    | #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       |         |
|          |        | co     |        | as of  | 1/15/00 |         |
|          |        | nflict |        | 24 Mar |         |         |
|          |        | with   |        |        |         |         |
|          |        | N15    |        | End    |         |         |
|          |        | ended  |        | N12    |         |         |
|          |        | 24 Mar |        | Co     |         |         |
|          |        |        |        | nflict |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **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  |         |
| #        |        |        |        | #####  |         | S       |
| 4=2247.5 |        |        |        | 4- Pla |         | valbard |
| mhz      |        |        |        | yback  |         | tests   |
+----------+--------+--------+--------+--------+---------+---------+
| #        | [Array | [Ar    | [Array | [Array | [Array  | [Array  |
| ## POWER | Off    | rayOff | Off    | Off    | Off     | Off.    |
|          | -30]   | -60]   | -55]   | -45]   | -4      | --4     |
| (Array   | {.unde | {.unde | {.unde | {.unde | 0]{.und | 0]{.und |
| offset,  | rline} | rline} | rline} | rline} | erline} | erline} |
| charge   |        |        |        |        |         |         |
| and      | Since  | since  | Since  | Since  | Since   | Since   |
| eclipse  | 6      | 7      | 8      | 1      | 7/16/02 | 1/29/04 |
| 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    |
| Solar    | all    |        |        |        |         |         |
| Eclipse  | year   | Sun    | Sun    | Sun    | Sun     | Sun     |
|          |        | Angle  | Angle  | Angle  | Angle   | Angle   |
| 19 April | Sun    | at 24  | at 28  | 14     | 59      | at 66   |
|          | angle  | u      |        |        |         |         |
| 12:0     | 77     | ptrend | up     | u      | Steady  | uptrend |
| 0-15:00Z |        | to 28  | trend  | ptrend | Trend   | to 72   |
|          | U      |        | to 43  | to 32  |         | in May  |
|          | ptrend | Sun    |        |        | Batts   |         |
|          | to 82  | sensor | Batts  | mid    | 1-3=    | Batts   |
|          | Ba     | s      | 1-3=   | June   | LRC     | 1-3=    |
|          | tts1,2 | hading | LRC    |        |         | LRC     |
|          | ,3=LRC |        |        | Batts  | V/T=4/8 |         |
|          |        | po     | Batts  | 1-3=   |         | V/T=    |
|          | VT1    | ssible | 1&3V/  | LRC    |         | 4/8     |
|          | ,2=6/8 | until  | T=8/11 |        |         |         |
|          |        | 4/04   |        | V      |         |         |
|          | VT3 =  |        | Batt2  | /T=7/9 |         |         |
|          | 8/11   | Batts  | V      |        |         |         |
|          |        | 1      | T=9/11 |        |         |         |
|          | Charge | &2=LRC | )      |        |         |         |
|          | state  |        |        |        |         |         |
|          | safe   | V/T=4  | Shunt  |        |         |         |
|          |        |        | De     |        |         |         |
|          | trip   |        | graded |        |         |         |
|          | di     |        |        |        |         |         |
|          | sabled |        | Per    |        |         |         |
|          |        |        | manent |        |         |         |
|          |        |        | e      |        |         |         |
|          |        |        | clipse |        |         |         |
|          |        |        | season |        |         |         |
|          |        |        | 3      |        |         |         |
|          |        |        | 0Mar04 |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| *        | INOP   | N      | IM     | N      | D       | ###     |
| *AVHRR** |        | ominal | PROVED | ominal | egraded | Nominal |
|          | Failed |        |        |        | Inter   |         |
|          | power  | Yaw    | No     | Rare   | mittent | 3A-B    |
|          | s      | bias   | image  | Scan   | Scan    | switch  |
|          | upply. | under  | bar    | motor  | motor   | enabled |
|          | Off    | i      | codes  | s      | current |         |
|          | since  | nvesti | 3/30.  | urges. | & sync  |         |
|          | 1994   | gation | First  | Last   | delta.  |         |
|          |        |        | time   |        | Barcode |         |
|          |        |        | since  | In     | images  |         |
|          |        |        | May 03 | cident |         |         |
|          |        |        |        | 8/9/03 | Chan 3B |         |
|          |        |        | STAT   |        | only.   |         |
|          |        |        | US=RED | On     |         |         |
|          |        |        |        | Watch  |         |         |
|          |        |        |        | List   |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **A      |        |        |        | ON     | ON      | O       |
| MSU-A1** |        |        |        |        |         | FF/INOP |
|          |        |        |        | Ch14   | TOAR    |         |
|          |        |        |        | inope  | 415 on  | Since   |
|          |        |        |        | rative | primary | 1       |
|          |        |        |        |        | PLLO    | 0/30/03 |
|          |        |        |        | Ch11   | chans   |         |
|          |        |        |        | inope  | 9-14    | Ino     |
|          |        |        |        | rative | bias    | perable |
|          |        |        |        |        | shift.  | Red in  |
|          |        |        |        |        |         | status. |
|          |        |        |        |        | TOAR    | S       |
|          |        |        |        |        | 417 on  | urvival |
|          |        |        |        |        | Backup  | heat    |
|          |        |        |        |        | PLLO    | on.     |
|          |        |        |        |        | inop    | TOAR    |
|          |        |        |        |        |         | 431     |
+----------+--------+--------+--------+--------+---------+---------+
| **A      |        |        |        | ON     | ON      | ON      |
| MSU-A2** |        |        |        |        |         |         |
|          |        |        |        |        | Space   |         |
|          |        |        |        |        | Pos     |         |
|          |        |        |        |        | ition-2 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **       |        |        |        | ON     | ON      | ON      |
| AMSU-B** |        |        |        |        |         |         |
|          |        |        |        | Bias   | Space   |         |
|          |        |        |        | in All | Pos     |         |
|          |        |        |        | Chans. | ition-3 |         |
|          |        |        |        |        |         |         |
|          |        |        |        | Motor  |         |         |
|          |        |        |        | s      |         |         |
|          |        |        |        | urges, |         |         |
|          |        |        |        | most   |         |         |
|          |        |        |        | recent |         |         |
|          |        |        |        | 2      |         |         |
|          |        |        |        | /16/03 |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| ### HIRS | #####  | INOP   | N      | VA     | NOMINAL | NOMINAL |
|          | ## OFF |        | OMINAL | RIABLE |         |         |
|          |        | Filter |        |        | Filter  | 1 Pixel |
|          | ####   | Wheel  | Opera  | FW     | Motor   | cross   |
|          | #### F | turned | tional | m      | current | track   |
|          | ilter  | OFF    |        | ode=Hi | profile | misal   |
|          | Wheel  | 10/    | Occa   | Powr   | change  | ignment |
|          | Failed | 17/02. | sional |        | 4 Mar   | .       |
|          |        | Elect  | loss   | FW     |         |         |
|          |        | ronics | of     | c      | On      |         |
|          |        | On     | Fwheel | urrent | watch   |         |
|          |        |        | synch  | e      | list    |         |
|          |        |        |        | rratic |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | FW     |         |         |
|          |        |        |        | H      |         |         |
|          |        |        |        | eaters |         |         |
|          |        |        |        | off    |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | FW     |         |         |
|          |        |        |        | Synch& |         |         |
|          |        |        |        | Period |         |         |
|          |        |        |        | M      |         |         |
|          |        |        |        | onitor |         |         |
|          |        |        |        | n      |         |         |
|          |        |        |        | ominal |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **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=5 | -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 |        |         |         |
|          |        |        |        |        |         |         |
|          |        |        | Auto   |        |         |         |
|          |        |        | nomous |        |         |         |
|          |        |        | reset  |        |         |         |
|          |        |        | and    |        |         |         |
|          |        |        | com    |        |         |         |
|          |        |        | manded |        |         |         |
|          |        |        | re     |        |         |         |
|          |        |        | covery |        |         |         |
|          |        |        | 12     |        |         |         |
|          |        |        | /16/03 |        |         |         |
+----------+--------+--------+--------+--------+---------+---------+
| **SBUV** | INOP   |        | Reco   |        | ON      | ON      |
|          |        |        | vering |        |         |         |
|          | G      |        |        |        | D       | Nominal |
|          | rating |        | Flex   |        | egraded |         |
|          | motor  |        | memory |        | Ozone   | Anode   |
|          | OFF    |        | 3      |        | data    | Mode    |
|          | since  |        | (giant |        | r       |         |
|          | 5      |        | step)  |        | eported |         |
|          | /29/03 |        | ops    |        | TOAR    |         |
|          |        |        | sus    |        | 435     |         |
|          | Elect  |        | pended |        |         |         |
|          | ronics |        | indefi |        | Primary |         |
|          | and    |        | nitely |        | &       |         |
|          | Heater |        | on     |        | Backup  |         |
|          | remain |        | 1      |        | d       |         |
|          | ON     |        | 2/2/03 |        | iffuser |         |
|          |        |        |        |        | =TOAR   |         |
|          |        |        | R      |        | 426 and |         |
|          |        |        | educed |        | TOAR    |         |
|          |        |        | oper   |        | 433     |         |
|          |        |        | ations |        |         |         |
|          |        |        | s      |        | Both    |         |
|          |        |        | tarted |        | have    |         |
|          |        |        | 6/5/03 |        | Antenna |         |
|          |        |        |        |        | deploy  |         |
|          |        |        |        |        | p       |         |
|          |        |        |        |        | roblems |         |
|          |        |        |        |        |         |         |
|          |        |        |        |        | AMSU    |         |
|          |        |        |        |        | EMI     |         |
|          |        |        |        |        | causing |         |
|          |        |        |        |        | erratic |         |
|          |        |        |        |        | B       |         |
|          |        |        |        |        | ehavior |         |
|          |        |        |        |        | in PMT  |         |
|          |        |        |        |        | cathod, |         |
|          |        |        |        |        | range 3 |         |
+----------+--------+--------+--------+--------+---------+---------+
| **       |        |        |        | N/A    | ON      | ON      |
| SADPOS** |        |        |        |        |         |         |
|          |        |        |        |        | ENABLED | ENABLED |
|          |        |        |        |        |         |         |
|          |        |        |        |        | MFactor |         |
|          |        |        |        |        | =50%    |         |
+----------+--------+--------+--------+--------+---------+---------+
| **T      | N      | N      | N      | TCE26  | Nominal | TCE3H   |
| HERMAL** | ominal | ominal | ominal | & 15H  |         | Batt 2A |
|          |        |        |        |        | TCE24   | heater  |
| Heaters, |        |        |        | Telem  | turned  | failed  |
| louvers  |        |        |        | i      | ON      | ON,     |
|          |        |        |        | nvalid | (AVHRR  | turned  |
| TCE's    |        |        |        | since  | H&L)    | off     |
|          |        |        |        | 12     | 1/16/04 | 8/26/03 |
|          |        |        |        | /23/03 |         | TOAR    |
|          |        |        |        |        |         | 428     |
|          |        |        |        | TOAR   |         |         |
|          |        |        |        | 432    |         | AMSU-A1 |
|          |        |        |        |        |         | s       |
|          |        |        |        | HIRS   |         | urvival |
|          |        |        |        | FW     |         | heaters |
|          |        |        |        | Heat   |         | on      |
|          |        |        |        | Off    |         | 1       |
|          |        |        |        |        |         | 0/29/03 |
|          |        |        |        | TCE2   |         |         |
|          |        |        |        | 4L&25L |         |         |
|          |        |        |        | (HIRS  |         |         |
|          |        |        |        | &      |         |         |
|          |        |        |        | AVHRR) |         |         |
|          |        |        |        | failed |         |         |
|          |        |        |        | 5      |         |         |
|          |        |        |        | /13/98 |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | RCE    |         |         |
|          |        |        |        | ther   |         |         |
|          |        |        |        | mostat |         |         |
|          |        |        |        | failed |         |         |
|          |        |        |        | 5      |         |         |
|          |        |        |        | /13/98 |         |         |
|          |        |        |        |        |         |         |
|          |        |        |        | Cold   |         |         |
|          |        |        |        | season |         |         |
|          |        |        |        | ended, |         |         |
|          |        |        |        | trend  |         |         |
|          |        |        |        | re     |         |         |
|          |        |        |        | versed |         |         |
+----------+--------+--------+--------+--------+---------+---------+
|          | *      | *      | *      | *      | **N16** | **N17** |
|          | *N11** | *N12** | *N14** | *N15** |         |         |
+----------+--------+--------+--------+--------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-11 No change since previous report.

NOAA-12. The Spacecraft remains in YGC attitude control mode with yaw
updates disabled. However, for the first time since

Sept 2003, the sun angle that necessitated this configuration has
finally begun to rise above the threshold that can possibly cause the
solar array to shade the sun sensor (which, when occurring concurrent
with a yaw update will autonomously switch the spacecraft to YGC mode).
Therefore, preparation for switching back to Nominal attitude control
mode has proceeded. The first step in this reconfiguration is to
re-install the software that will allow the spacecraft to again
calculate Yaw bias (which has been disabled since being patched in Sept
2003) will be reloaded next week. This upload is planned for Thursday, 1
Apr. Jon Woodward is EMOSS POC. Following this software patch, Jim
Sheperd will analyze the yaw response to this re-configuration and
command the spacecraft back to Nominal mode for the first time since
Sept 2003, if everything appears nominal. This operation is planned for
Friday morning, 2 Apr.

The N12 command clock, which has remained stable since the -500 mSec
drop in Jan 2004, and is expected to gain these 500 mSecs back on or
about 2 April. No response by EMOSS will be required.

NOAA-14: Due to reduced contact support, N14 had a number of data gaps
this week. The N14 AVHRR Scan motor current was

slightly improved last week (illustration 1) but, as of today, 30 Mar,
the N14 AVHRR imagery (as displayed by the NOAA PIDES system) is bar
code free for the first time since last May. In contrast, the N14 Synch
delta [value]{.underline} appears to have steadily worsened throughout
the year while its [stability]{.underline} (as measured by standard
deviation) has actually improved significantly (illustration 2) This
improvement is almost a year to the day when the N14 AVHRR self-improved
the last time (19 Mar 03) although by 20 May 03 its performance and
imagery data again degraded and remained degraded until today. The EMOSS
team is looking into possible correlations with thermal, sun angles and
other possible coincidences in the hope of better understanding this
payloads performance (illustration 3). Will Kent is EMOSS POC.

The HIRS filter wheel continued to be generally stable with occasional
losses of filter wheel synch and short filter motor current surges. In
addition, N14 bus and shunt voltage were also nominal. The new permanent
eclipse season for N14 started with the first discharge of the battery
today, 30 Mar at 09:00Z. No changes are currently planned until
performance data can be analyzed once the eclipse becomes deeper and
more established

NOAA-15: The N15 AVHRR scan motor current and synch delta values
remained nominal throughout the last reporting period) as

its scan motor continued to warm (illustration 4). Imagery was also
nominal and while the synch delta value was nominal, its stability
appeared to be lightly less so (illustration 5). EMOSS engineers had
noticed a change in character for this payload component several weeks
ago that was reminiscent of the situation leading up to the N16 AVHRR
anomaly last September. Coupled with the fact that this payload has had
significant problems in the past, additional vigilance is warranted and
will continue to be applied by the EMOSS team.

The AMSU-B scan motor was nominal and stable during the past reporting
period but once again the HIRS filter motor current exhibited the near
continual "mini" surges profile that has become something of a feature
on this payload since the major surge in December of 2003 (illustration
6). On the plus side, there have been no reports of imagery degradation
throughout this period nor is it apparent when analyzing PIDES imagery.

Analysis of peripheral values for the failed TIP-2 telemetry channels
(224, 226, 227) indicates that all remain nominal (illustration 7). No
additional tests are planned.

N15 APT data, was turned back on at 13:05Z on 24 Mar after its conflict
with N12 ended (illustration 8). This was the

first time ever that N15 APT data was turned off when its VHS
transmitter was in RF conflict with N12 and was implemented at the
request of AVHRR users. Angelique Riley was POC for this operation.

Rgyro coordination continues with the test planned to begin starting the
week of 19 April. EMOSS engineer Jon Woodward has generated a number of
safing macros that will be in use during these tests and will upload
them to N15 on 31 Mar at 18:30Z. Coordination continues with the next
meeting of the Rgyro committee scheduled for 1 April at 11:00Z.

NOAA-16: The N16 AVHRR scan motor remained anomalous throughout the past
reporting period and actually worsened in the

past several days to the point where it spending a significant time at
"pegged levels" and appears as anomalous as it has ever been. In
addition, the can motor temperatures are also slowly rising (but not
surging) in conjunction with the sustained high current. Most imagery
now contains bar codes and synch deltas are pegged throughout the day.
No tests or reconfigurations are currently planned (illustration 9-11).

On 24 Mar at 12:55Z, EMOSS engineers performed a dwell test on the N16
AVHRR scan motor current per ITT request in order to help them better
understand the dynamics of the wave pattern data that first became
apparent in Jan 2004 and is another indicator of the degradation of this
payload. This mode was performed for 2 minutes and then returned back to
orbit mode. SOCC is currently unable to process the data so it can be
used by ITT for analysis. A PIR

NOAA-16: (cont)

is in place in order for this processing to be accomplished. The
software fix for this situation is being addressed by the PARB with the
date for completion still TBD. Will Kent is EMOSS POC.

The N16 HIRS continued to improve and stabilize during most of the past
reporting period (illustration 12) with no new notifications of degraded
data being received by EMOSS. The team continues to maintain close
scrutiny on this payload. Will Kent is POC.

N16 attitude control was nominal during the past reporting period with
(illustration 13) as were bus voltage and shunt performance.

On 25 Mar, EMOSS was informed by Emily Harrod that Lannion was losing 6
lines of payload data at 04:30 every ninth day. EMOSS engineers
understood and advised that at 04:30Z every day the MIRP is rephased
which would result in the loss of 6 lines, as Lannion was experiencing.
However, this occurs every day and EMOSS undertook to determine why
Lannion only saw it every 9^th^ day. EMOSS engineer Kim Kolb ran a
visibility of N16 and showed that the reason why Lannion only lost data
at 04:30Z every 9 days is because the spacecraft is only visible to
Lannion at 04:30Z every ninth day (illustration 14).

EMOSS conducted a test of DTR-4A to determine if this recorder is still
acting anomalously. On 25 and 29 Mar, EMOSS POC Angelique Riley oversaw
an operation that put the DTR into forward play to end of tape. This
test was conducted in support of a TOAR investigation on this recorder
to determine any differences between the last recorded data set and any
empty space remaining on the recorder. The test was completed nominally
and the recorder status remains the same, only able to playback STIP but
not GAC and LAC).

NOAA-17: Because of significant degradation in Yaw precision caused by a
noisy gyro#3, EMOSS recommended and NOAA

approved a gyro channel reconfiguration which was implemented on 25 mar
at 14:45Z. The operation consisted of the following changes: (NOTE: [X
axis = YAW, Y axis = ROLL, Z axis = PITCH (A and B
Channels)]{.underline}

**[PREVIOUS CONFIGURATION]{.underline}: (Channels=BBB)**

Gyro #1 Y axis on A channel, Z axis on A channel (NEITHER IS SELECTED
BOTH ARE ON)

Gyro #2 X axis on A channel (ON, BUT NOT SELECTED), Z axis on B channel
(SELECTED)

Gyro #3 X axis on B channel, Y axis on B channel (BOTH SELECTED)

**[NEW CONFIGURATION: (Channels=-AAB)]{.underline}**

Gyro #1 Y axis on A channel (SELECT) , Z axis on A channel (DON'T
SELECT)

Gyro #2 X axis on A Channel, Z axis on B channel (SELECT BTOH)

Gyro #3 X axis on B channel, Y axis on B channel (DESELECT BOTH)

Shortly After the configuration change was completed, yaw values
returned to their nominal profile where they have remained as of this
writing (illustration 15). EMOSS engineers will continue to closely
monitor Gyro-3 to determine if the noise that it has been producing is
interfering with Yaw control (even though it is deselected). If it is
determined that this is the case, EMOSS will recommend powering Gyro-3
off completely as was done on N15. Jim Sheperd is POC for this issue. A
TOAR has been submitted on gyro-3 in regard to this situation.

On 27 Mar, EMOSS engineer Jon Woodward generated a new TOAR for an
incident that occurred on 21 Feb 04 and subsequently reported to the
POES community the next day. This incident was where CPU 2 experienced
over 100 single event upsets in a 3 hour period. This event was very
similar to another TOAR generated on CPU-1 in Dec 2003.

Power and thermal components of N17 remained nominal and steady last
week while testing over Svalbard using STX-4 continued on each Svalbard
visibility during the week (illustration 16 and 17). For the first time
on 25 Mar, the Barrow CDA transmitted "dummy" stored command loads to a
spacecraft (N17).

NOAA-N No changes since previous report

MISC: EMOSS engineer Jon Woodward is updating the ground images for all
POES spacecraft with current FSW parameters

that are currently onboard operational spacecraft. This is being done in
case a full OBP load is required, and thus the current configuration and
set parameters are maintained. N15 is currently being upgraded with N16
next in line

EMOSS supported the MOWG and MHS working groups the past reporting
period. EMOSS engineers completed a Regression Test Plan for CWS and
delivered it to NOAA a day earlier than required. Work on the test
procedures for this plan is ongoing. Kim Kolb is EMOSS POC.

![](media/image1.wmf){width="8.25in" height="5.5in"}

> 30 Mar 0430Z 30 Mar 1145z

Illustration 1: N14 AVHRR Scan Motor Health and Imagery Analysis

(first clean images since May 2003)

![](media/image4.wmf){width="8.25in" height="6.151388888888889in"}

Illustration 2: N14 Synch Delta value and stability for 2004

(First good images of the year were noticed on day 90)

![](media/image5.wmf){width="8.125in" height="6.057638888888889in"}

Illustration 3: N14 AVHRR Imagery vs Environment Analysis

(Notes)

**[Yellow]{.underline}** Areas are those were image bar codes were
prevalent).

**[Blue]{.underline}** bands are times of lowest sun angle (spacecraft
"winter"/cold season).

**[Gray]{.underline}** bands are eclipse season periods.

The last two data points on these graphs depict no yellow area/nominal
images for the first time since May 2003). Thermal and solar
correlations are not readily apparent..

![](media/image6.wmf){width="8.0in" height="5.964583333333334in"}

Illustration 4: N15 AVHRR scan motor profile analysis.

(Generally stable but still being closely monitored. Imagery remains
nominal)

![](media/image7.wmf){width="8.125in" height="6.058333333333334in"}

Illustration 5: N15 AVHRR synch delta analysis.

(Values remain nominal but some concern about the slightly higher
instability as measured by standard deviation.)

![](media/image8.wmf){width="8.0in" height="6.0625in"}

Illustration 6: N15 HIRS Health Analysis.

(More of the same erratic scan motor performance but no reports of
imagery degradation)

![](media/image9.wmf){width="8.125in" height="6.156944444444444in"}

**Illustration 7: Failed telemetry channel (224, 226, 227)**

**peripheral analysis**

(All 3 channels remain flatlined, probably permanently. All peripherals
look nominal indicating that the TCE's are still operational)

![](media/image10.wmf){width="8.0in" height="6.0625in"}

**Illustration 8: N15 VTX-1 performance after returning to service
following the first time it has ever been turned off for an N12
conflict.**

![](media/image11.wmf){width="8.25in" height="6.151388888888889in"}

**Illustration 9: N16 AVHRR Scan Motor Analysis**

(As bad as it has ever been.)

![](media/image12.png){width="7.625in" height="1.5555555555555556in"}

####### N16 Latest GAC: 30 Mar 2004 at 07:00Z

![](media/image13.png){width="2.5in" height="3.672222222222222in"}

# N16 Latest LAC 07:20Z N16 Latest HRPT 30 Mar 12:00Z

**Illustration 10: N16 Imagery Analysis 30 Mar 2004**

![](media/image15.wmf){width="8.0in" height="5.964583333333334in"}

**Illustration 11: N16 AVHRR Synch Delta Analysis**

(Degradation is obvious)

![](media/image16.wmf){width="7.875in" height="6.069444444444445in"}

**Illustration 12: N16 HIRS Filter Motor Health (Recent History)**

(Improved especially in the last week. Vigilance will be maintained.)

![](media/image17.wmf){width="8.125in" height="6.058333333333334in"}

**Illustration 13: N16 Yaw control analysis**

![](media/image18.wmf){width="7.5in" height="4.727777777777778in"}

####### EMOSS POC for this graphic Kim Kolb

The answer to the 9 day cycle at Lannion......each target is NOAA16 at
0430Z on the day specified. Starting with 2Feb04, the ninth day, 10Feb04
is the only day when Lannion has contact at 0430Z.

**Illustration 14: Lannion data loss problem solved**

![](media/image19.wmf){width="8.25in" height="6.151388888888889in"}

**Illustration 15: N17 Attitude control Analysis**

(note the significant improvements of yaw updates following the swap on
JDAY 85)

[New Configuration is as follows:]{.underline}

Y (ROLL) to Gyro#1, Channel-A

X (YAW) to Gyro#2 Channel-A

Z (PITCH) to Gyro#2 Channel-B

Deselect Gyro #3 (possibly power off)

![](media/image20.wmf){width="8.0in" height="5.964583333333334in"}

**Illustration 16: N17 STX-4 Performance**

![](media/image21.wmf){width="8.25in" height="6.151388888888889in"}

**Illustration 17: N17 Power analysis**

**Weekly N17 CPU Error Scrubs**

> On 22 Dec between 18:24 and 19:01Z CPU errors were reported by
> telemetry at a substantially higher number (numbered in the hundreds)
> than appears above. For purposes of brevity only the first and last
> errors during this possible anomalous situation are being reported. A
> TOAR was submitted in response to this event. On 8 Feb 04, a similar
> occurrence happened on CPU-2. No effect on the spacecraft was apparent
> and this large number will not be included in future reporting on CPU
> errors.

![](media/image22.wmf){width="7.5in" height="1.8680555555555556in"}

![](media/image23.wmf){width="7.0in" height="5.284722222222222in"}

**Red/Circle = CPU#1**

**Black/X = CPU#2**

NOAA-17 Scrubber Hits from 21 Mar 2004 through 28 Mar 2004:

![](media/image24.wmf){width="7.625in" height="4.641666666666667in"}

**(NOTE: These statistics DO NOT include the multitude of errors
reported on**

### CPU-1 on 22 Dec or CPU-2 on 8 Feb

### POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING March 26, 2004

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

  FRI. 03/19  -1282     -538 msec  +045 msec  +007 msec  -015 msec  +037 msec
              msec                                                  

  SAT. 03/20  -1912     -538 msec  +045 msec  +006 msec  -014 msec  +036 msec
              msec                                                  

  SUN. 03/21  -1642     -540 msec  +041 msec  +008 msec  -011 msec  +036 msec
              msec                                                  

  MON. 03/22  -1772     N/A        +041 msec  +006 msec  -010 msec  +036 msec
              msec                                                  

  TUE. 03/23  -1802     -538 msec  +040 msec  +005 msec  -011 msec  +035 msec
              msec                                                  

  WED. 03/24  -1732     -539 msec  +047 msec  +007 msec  -010 msec  +033 msec
              msec                                                  

  THU. 03/25  -1662     -540 msec  +047 msec  +006 msec  -012 msec  +035 msec
              msec                                                  
  ----------- --------- ---------- ---------- ---------- ---------- ----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-11 As of 09/03/02 the Control Side TIP clock is corrected daily by
+70 msec to compensate for drift.

As of 11/03/03 Non control side clock is no longer supported

NOAA-12 EXPECT +500mSec jump on 2 Apr

Daily ETCUP bias of +6.5 mSec started on 12/10/03. Offset fell 500mSecs
on 17 Jan

EXPECTING +500 mSec jump on or about 1 Apr 04

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

Subtracted 50 msec from spacecraft command on 23 Dec 03.

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 mSECS on 23 Feb 04.

![](media/image25.wmf){width="7.0in" height="4.156944444444444in"}

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

March 19,2004 through March 25, 2004

JDAY 079-085

  ----------- ------- ------ ------------- ---------- ---------- --------- -------------
                             NOAA15        \*NOAA14   \*NOAA11   NOAA16    NOAA17

  Friday      03/19   079    100.0                               100.0     **99.9(a)**

                                                                           

  Saturday    03/20   080    100.0                               100.0     **99.9(b)**

                                                                           

  Sunday      03/21   081    100.0                               100.0     100.0

                                                                           

  Monday      03/22   082    100.0                               100.0     100.0

                                                                           

  Tuesday     03/23   083    **99.9(c)**                         100.0     100.0

                                                                           

  Wednesday   03/24   084    100.0                               100.0     100.0

                                                                           

  Thursday    03/25   085    100.0                               100.0     100.0

                                                                           

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

**\*NOAA-11 and NOAA-14 excluded because they are only recording STIP
data. This data is not recovered.**

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

(a) Rev 09022/F: G3A noisy; 98.2% recovered 1DL.

(b) Rev 09034/F: G4A noisy; 99.0% recovered 1DL.

(c) Rev 30460/W: G3B noisy; 98.4% recovered.

**[EMOSS POC For This Chart: Angelique Riley]{.underline}**

**[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