**POLAR Spacecraft Status As of: Tues, 13 Sept, 16:00 EST**

*(changes from last week in bold border)*

+----------+--------+--------+--------+---------+---------+---------+
| **Subs   | **NOAA | **NOAA | **NOAA | **NOA   | ##### N | ##### N |
| ystem/** | -12D** | -14J** | -15K** | A-16L** | OAA-17M | OAA-18N |
|          |        |        |        |         |         |         |
| **Com    | AM     | AM:    | AM:    | PM:     | AM:     | PM      |
| ponent** | 16     | 20     | 18     | 1       | 2       | 1       |
|          | :51=AN | :39=AN | :06=AN | 4:41=AN | 2:25=AN | 4:00=AN |
|          |        |        |        |         |         |         |
|          | STIP   | STIP   | GAC    | GAC&LAC | GAC&LAC | GAC &   |
|          | data   | data   | data   | data    | data    | LAC     |
|          | only   | only   | only   |         |         | data    |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | Oper    |
|          |        |        |        |         |         | ational |
|          |        |        |        |         |         | 30Aug05 |
+----------+--------+--------+--------+---------+---------+---------+
| **LA     | 05     | 12     | 05     | 0       | 6/24/02 | ##      |
| UNCHED** | /14/91 | /30/94 | /13/98 | 9/21/00 |         | ##### 5 |
|          |        |        |        |         |         | /20/05  |
+----------+--------+--------+--------+---------+---------+---------+
| **CNTL   | OBP2   | OBP2   | OBP2   | OBP2    | OBP2    | OBP2    |
| OBP**    |        |        |        |         |         |         |
|          |        | OBP1   |        |         |         |         |
|          |        | inope  |        |         |         |         |
|          |        | rative |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS**  | B-BUS  | B-BUS  | B-BUS  | B-BUS   | B-BUS   | B-BUS   |
|          |        |        |        |         |         |         |
|          | XSU-1  | XSU2   | XSU-1  | XSU-1   | XSU-1   | XSU-1   |
|          |        | (XSU1  |        |         |         |         |
|          |        | inop)  |        | XSU1    |         |         |
|          |        |        |        | TOAR    |         |         |
|          |        |        |        | 444     |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS    | NO     | NO     | NO     | NO      | NO      | NO      |
| VETO**   |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | [N     | [N     | [N     | #####   | #####   | [       |
| *ADACS** | ominal | ominal | ominal | # [Nomi | # [Nomi | Nominal |
|          | Mode]  | Mode]  | Mode]  | nal Mod | nal Mod | Mod     |
| X=Yaw    | {.unde | {.unde | {.unde | e]{.und | e]{.und | e]{.und |
|          | rline} | rline} | rline} | erline} | erline} | erline} |
| Y=Roll   |        |        |        |         |         |         |
|          | RG     | Rgm    | Rg     | Rgmode= | Rgmode= | Gyro-A  |
| Z=Pitch  | mode=M | ode=Di | mode=M | Monitor | Monitor | MIMU-2  |
|          | onitor | sabled | onitor |         |         |         |
|          |        |        |        | Gyro-3  | Gyro-3  | Z-wheel |
|          | Gyro   | Gyro   | Gyro-3 | Off     | Off     | -Pitch  |
|          | cha    | cha    | Off    | 6/10/04 | 6/10/04 |         |
|          | ns=XYZ | ns=XYZ | 6      |         |         | TOAR    |
|          |        |        | /26/00 | Gyro    | Gyro    | 447     |
|          |        | SS     | Gyro   | ch      | ch      |         |
|          |        | check  | cha    | ans=AAA | ans=AAB |         |
|          |        | Di     | ns=AAB |         |         |         |
|          |        | sabled |        |         | Gyro-2  |         |
|          |        | when   | N2 Low |         | invest  |         |
|          |        | mo     | PSI    |         | igation |         |
|          |        | de=YGC | i      |         |         |         |
|          |        |        | nvalid |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI     | PRI     | PRI     |
|          |        |        |        |         |         |         |
|          | BU     | BU     | daily  | Daily   | Daily   | No      |
|          | random | random | bias   | Bias    | Bias    | daily   |
|          | e      | e      | -8 mS  | --5.5   | --3 mS  | bias    |
|          | nables | nables |        | mS      |         |         |
|          |        | daily  | +100   |         |         |         |
|          | daily  | bia    | mS     | -100 mS |         |         |
|          | bi     | s--7.0 | 3      | 31Aug04 |         |         |
|          | as+6.5 | mS     | 1Aug04 |         |         |         |
|          | mS     |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2       | 2       | 2       |
| DIV**    |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **MIRP** | Ex     | Ex     | Ex     | E       | E       | E       |
|          | ternal | ternal | ternal | xternal | xternal | xternal |
|          | Synch  | Synch  | Synch  | Sync    | Sync    | Synch   |
|          |        |        | R      |         |         |         |
|          | R      | R      | ephase | Rephase | Rephase | Rephase |
|          | ephase | ephase | 0730   | each    | Enabled | Enabled |
|          | E      | 0730   | daily  | orbit   |         |         |
|          | nabled | Daily  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **TIP    | 1      | 1      | 2      | 2       | 1       | 1       |
| SIDE**   |        |        |        |         |         |         |
|          |        |        | (since | since   | Analog  |         |
|          |        |        | 4/     | 4/18/05 | telem   |         |
|          |        |        | 23/03) |         | d       |         |
|          |        |        |        |         | rifting |         |
|          |        |        | 3      |         |         |         |
|          |        |        | Ch     |         |         |         |
|          |        |        | annels |         |         |         |
|          |        |        | inop   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **Rec    | DTRs   | DTRs   | DTRs   | DTRs 1, | DTR     | SSRs    |
| orders** | 3A, 4, | 1, 2B, | 1, 2,  | 2, 3,   | 1,3,4 / | 1,      |
|          | 5B     | 5      | 3, 4   | 4A      | SSR 2   | 2,3,4,5 |
| **(DTR,  |        | Safe   | Saf    |         |         |         |
| SSR)**   | Saf    | state- | estate | Sa      | Safest  | Current |
|          | estate | 1B     | 1B EOT | festate | ate=DTR | spikes  |
| Plan SS  | 5B     |        |        | 3A      | 1B      |         |
| rec      |        |        |        |         |         | TOAR    |
| changes  |        |        |        | 4B STIP |         | 450     |
|          |        |        |        | only    |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **VTX**  | #1 ON  | OFF    | #1 ON  | I       | #2 ON   | #2 ON   |
|          |        | (no    |        | NOP/Off |         |         |
| (APT     | 137.50 | minal) | 137.50 |         | 137.62  | 1       |
| data)    | MHZ    |        | MHZ    | OFF     | MHZ     | 37.9125 |
|          |        | Since  |        | since   |         | MHZ     |
|          |        | 8/2/05 |        | 1       | C       |         |
|          |        | N17    |        | 1/15/00 | onflict | Swap    |
|          |        | con    |        |         | with    | con     |
|          |        | flict, |        |         | N14     | sidered |
|          |        | turnon |        |         |         |         |
|          |        | tbd    |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **BTX**  | #1     | #2     | #1     | #2      | ###     | #1      |
|          |        |        |        |         | #### #2 |         |
|          | 136.77 | 137.77 | 137.35 | 137.77  |         | 137.35  |
|          | MHZ    | MHZ    | MHZ    | MHZ     | 137.77  | MHZ     |
|          |        |        |        |         | MHZ     |         |
+----------+--------+--------+--------+---------+---------+---------+
| **STX**  | 1 --   | 3 --   | 2-Omni | 2 --    | 3 --    | 1 -     |
|          | HRPT;  | HRPT   | HRPT   | HRPT    | HRPT    | HRPT    |
| 1 = rcp  |        |        |        |         |         |         |
| 1698.0   | 2,3 -  | 2, 1   | Power  | 1--     | TOAR424 | 3 -     |
| mhz      | Pl     | --     | drop   | P       | low     | P       |
|          | ayback | Pl     |        | layback | power   | layback |
| 2 = lcp  |        | ayback | TOAR   |         |         |         |
| 1702.5   |        |        | 446    | Swapped | 2 & 4   | Swapped |
| mhz      |        |        |        | 8/30    | P       | 8/30    |
|          |        |        | 4-Pl   |         | layback |         |
| 2        |        |        | ayback | 4 --    |         | 2-P     |
| omni=rcp |        |        |        | P       | 1-      | layback |
|          |        |        | 1,     | layback | Standby |         |
| 3= rcp   |        |        | 2,3-De |         |         | 4-Test  |
| 1707.0   |        |        | graded | 3 low   | STX-1   | &       |
| mhz      |        |        |        | power   | Power   | Standby |
|          |        |        |        | unused  | drop    |         |
| 4= rcp   |        |        |        |         | TOAR    |         |
| 2247.5   |        |        |        |         | 443.    |         |
| mhz      |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| #        | [Ar    | [Array | [Array | [Array  | [Array  | [Array  |
| ## POWER | rayOff | Off    | Off    | Off     | Off.    | Off.    |
|          | +60]   | -55]   | -45]   | -4      | --4     | -4      |
| (Array   | {.unde | {.unde | {.unde | 0]{.und | 0]{.und | 0]{.und |
| offset   | rline} | rline} | rline} | erline} | erline} | erline} |
| and CANT |        |        |        |         |         |         |
| angle,   | since  | Since  | Since  | Since   | Since   | [S]{.   |
| charge & | 6      | 8      | 1      | 7/16/02 | 1/29/04 | underli |
| V/T      | /23/04 | /21/03 | /25/01 |         |         | ne}ince |
| rates,   |        |        |        | Eclipse | Eclipse | 6/6/05  |
| eclipse  | Full   | E      | Full   | all     | all     |         |
| states   | Sun    | clipse | Sun    | year    | year    | **      |
| and sun  |        | all    |        |         |         | *[Array |
| angle)   | Sun    | year   | Sun    | Sun     | Sun     | 360     |
|          | Angle  |        | Angle  | Angle   | Angle   | slew    |
| Solar    | 22     | Sun    | 16     | 50      | at 68   | test    |
| eclipse  | dow    | angle  | dow    |         |         | planned |
| interm   | ntrend | 48     | ntrend | Do      | Steady  | for]{   |
| ittently | to 12  |        | to 2   | wntrend | trend   | .underl |
| for 5    | m      | Steady | degs   | to 41   |         | ine}*** |
| hours on | id-Oct | trend  | on 10  | on 30   | Batts   |         |
| 3 Oct 05 | 05     |        | Oct 05 | Oct 05  | 1-3=    | ***[20  |
|          |        | Batts  |        |         | LRC     | & 21    |
| All      | Batts  | 1-3=   | Batts  | Batts   |         | Sept]{  |
| sp       | 1      | LRC    | 1-3=   | 1-3=    | V/T=    | .underl |
| acecraft | &2=LRC |        | LRC    | LRC     | 4/8     | ine}*** |
|          |        | Batts  |        |         |         |         |
|          | Batt   | 1&3V/  | V      | V/T=4/8 | SA      | Eclipse |
|          | !&2    | T=7/11 | /T=7/9 |         | CANT=37 | all     |
|          | V/T=4  |        |        | SA      | degs    | year    |
|          |        | Batt2  | SA     | CANT=22 |         |         |
|          | Shunt  | V      | C      | degs    |         | TOAR    |
|          | de     | T=8/11 | ANT=37 |         |         | 453 on  |
|          | graded |        | degs   |         |         |         |
|          |        | SS     |        |         |         | Batt    |
|          | SA     | t      |        |         |         | C/D     |
|          | C      | rigger |        |         |         | ratio   |
|          | ANT=37 | =18.98 |        |         |         |         |
|          | degs   |        |        |         |         | Batts   |
|          |        | Shunt  |        |         |         | 1-3=LRC |
|          |        | De     |        |         |         |         |
|          |        | graded |        |         |         | Batts   |
|          |        |        |        |         |         | 1-3     |
|          |        | SA     |        |         |         | V/T=4/8 |
|          |        | C      |        |         |         |         |
|          |        | ANT=22 |        |         |         | SADE -1 |
|          |        | degs   |        |         |         | 7/29/05 |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | SA      |
|          |        |        |        |         |         | CANT=22 |
+----------+--------+--------+--------+---------+---------+---------+
| *        | N      | N      | N      | Im      | ###     | Nominal |
| *AVHRR** | ominal | ominal | ominal | proving | Nominal |         |
|          |        |        |        |         |         | 3A-B    |
|          |        | Ch     | Rare   | TCE24   | 3A-B    | switch  |
|          |        | annels | major  | OFF     | switch  | D       |
|          |        | 2 & 4  | scan   | 4/14/04 | enabled | isabled |
|          |        | to APT | motor  |         |         | 8/05/05 |
|          |        | 8/2/05 | s      | Last    |         |         |
|          |        |        | urges. | bar     |         | Channel |
|          |        |        | Last   | code    |         | 3B only |
|          |        |        |        | image 2 |         |         |
|          |        |        | In     | Sept.   |         |         |
|          |        |        | cident | Waves   |         |         |
|          |        |        | 11     |         |         |         |
|          |        |        | /18/04 | Channel |         |         |
|          |        |        |        | 3B      |         |         |
|          |        |        |        | only.   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | Opera  | Oper    | O       | Nominal |
| MSU-A1** |        |        | tional | ational | FF/INOP |         |
|          |        |        |        |         |         | Full    |
|          |        |        | Ch14   | Primary | Since   | Scan    |
|          |        |        | inope  | PLLO    | 1       | mode    |
|          |        |        | rative | chans   | 0/30/03 |         |
|          |        |        |        | 9-14    |         |         |
|          |        |        | Ch11   | bias    | S       |         |
|          |        |        | inope  | shift.  | urvival |         |
|          |        |        | rative |         | heat    |         |
|          |        |        |        | Backup  | on.     |         |
|          |        |        |        | PLLO    |         |         |
|          |        |        |        | inop.   |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | Channel |         |         |
|          |        |        |        | 9-14    |         |         |
|          |        |        |        | noise   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | N      | Nominal | Nominal | Nominal |
| MSU-A2** |        |        | ominal |         |         |         |
|          |        |        |        | Space   |         | Full    |
|          |        |        |        | Pos     |         | scan    |
|          |        |        |        | ition-2 |         | mode    |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | Opera  | Oper    | Nominal | ***R    |
| AMSU-B** |        |        | tional | ational |         | eplaced |
|          |        |        |        |         |         | by      |
|          |        |        | Bias   | Space   |         | MHS***  |
|          |        |        | in All | Pos     |         |         |
|          |        |        | Chans. | ition-3 |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Motor  | IPD     |         |         |
|          |        |        | surges | reports |         |         |
|          |        |        | most   | channel |         |         |
|          |        |        | recent | 8       |         |         |
|          |        |        | 11     | degr    |         |         |
|          |        |        | /14/04 | adation |         |         |
|          |        |        |        |         |         |         |
|          |        |        | de     |         |         |         |
|          |        |        | graded |         |         |         |
|          |        |        | data   |         |         |         |
|          |        |        | on     |         |         |         |
|          |        |        | Chan-3 |         |         |         |
|          |        |        | since  |         |         |         |
|          |        |        | 4/30   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ### HIRS | OF     | N      | N      | Oper    | NOMINAL | ######  |
|          | F/Inop | OMINAL | OMINAL | ational |         | ## Oper |
|          |        |        |        |         | 1 Pixel | ational |
|          | Turned | Opera  | Yellow | High    | cross   |         |
|          | off    | tional | status | levels  | track   | Status  |
|          | 6      |        |        | of      | misal   | dow     |
|          | /23/05 | Occa   | Since  | imagery | ignment | ngraded |
|          |        | sional | 16 May | radi    | .       | to      |
|          | For    | loss   | 05     | ometric |         | Yellow  |
|          | power  | of     |        | noise   |         | 15 Aug  |
|          | b      | Fwheel | FW     |         |         | 05      |
|          | alance | synch  | Abrupt | TOAR    |         |         |
|          |        |        | return | 441     |         | ####    |
|          | Filter |        | to     | open    |         | #### TO |
|          | Wheel  |        | n      |         |         | AR 448  |
|          | turned |        | ominal | Occ     |         |         |
|          | OFF    |        |        | asional |         | ####### |
|          | 10/    |        | TOAR   | major   |         | # Noise |
|          | 17/02. |        | 445    | FM      |         |  in lon |
|          |        |        | CLOSED | surges, |         | g wave  |
|          |        |        | 7      | most    |         |         |
|          |        |        | /12/05 | recent  |         | ##      |
|          |        |        |        |         |         | ######  |
|          |        |        | FW     | 12/9/04 |         | channel |
|          |        |        | m      |         |         | s 1-12. |
|          |        |        | ode=Hi |         |         |         |
|          |        |        | Powr   |         |         | Some    |
|          |        |        |        |         |         | impr    |
|          |        |        | FW     |         |         | ovement |
|          |        |        | Heater |         |         | re      |
|          |        |        | OFF    |         |         | ported. |
+----------+--------+--------+--------+---------+---------+---------+
| ###      |        |        |        |         |         | Nominal |
|  MHS/MIU |        |        |        |         |         |         |
|          |        |        |        |         |         | Space   |
|          |        |        |        |         |         | View=0  |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | 1 Pixel |
|          |        |        |        |         |         | point   |
|          |        |        |        |         |         | error   |
|          |        |        |        |         |         | TOAR    |
|          |        |        |        |         |         | 452     |
|          |        |        |        |         |         | closed  |
|          |        |        |        |         |         | op      |
|          |        |        |        |         |         | eration |
|          |        |        |        |         |         | is      |
|          |        |        |        |         |         | nominal |
+----------+--------+--------+--------+---------+---------+---------+
| **MSU**  | OF     | Opera  |        |         |         |         |
|          | F/Inop | tional |        |         |         |         |
|          |        |        |        |         |         |         |
|          | Turned | Scan   |        |         |         |         |
|          | off    | motor  |        |         |         |         |
|          | for    | and    |        |         |         |         |
|          | power  | a      |        |         |         |         |
|          | b      | ntenna |        |         |         |         |
|          | alance | pr     |        |         |         |         |
|          |        | oblems |        |         |         |         |
|          | 6      |        |        |         |         |         |
|          | /23/05 | End of |        |         |         |         |
|          |        | life   |        |         |         |         |
|          |        | test   |        |         |         |         |
|          |        | pr     |        |         |         |         |
|          |        | oposed |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SSU**  |        | N      |        |         |         |         |
|          |        | ominal |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DCS**  | N      | N      | N      | Nominal | Nominal | Nominal |
|          | ominal | ominal | ominal |         |         |         |
|          |        |        |        |         |         | DRU's   |
|          |        |        |        |         |         | 1-7 On  |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | DRU-8   |
|          |        |        |        |         |         | TOAR    |
|          |        |        |        |         |         | 449     |
|          |        |        |        |         |         | turned  |
|          |        |        |        |         |         | off     |
|          |        |        |        |         |         | 6/13    |
+----------+--------+--------+--------+---------+---------+---------+
| **SARR** |        | N      | Opera  | Oper    | Nominal | Nominal |
|          |        | ominal | tional | ational |         |         |
|          |        |        |        |         | A-side  | A-Side  |
|          |        |        | A      | Mode    |         |         |
|          |        |        | -Side, | =AA     | All AGC | All AGC |
|          |        |        | AGC    |         | Mode    | Mode    |
|          |        |        | Mode   | A-side, |         |         |
|          |        |        |        | AGC     |         | Since   |
|          |        |        | Interm | Mode    |         | 15 Aug  |
|          |        |        | ittent |         |         | 05      |
|          |        |        | fa     | (B-side |         |         |
|          |        |        | ilures | in FG   |         |         |
|          |        |        | for    | mode)   |         |         |
|          |        |        | 243MHz |         |         |         |
|          |        |        | A&B    | 243 MHz |         |         |
|          |        |        |        | = INOP. |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARP** |        | OFF    | N      | Nominal | Nominal | Nominal |
|          |        |        | ominal |         |         |         |
|          |        | Power  |        | RCVR    |         | A-side  |
|          |        | F      | RCVR   | B/W = 2 |         | 23 May  |
|          |        | ailure | B/W =  |         |         |         |
|          |        |        | 2      |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SEM**  | ON/N   | Opera  | N      | Nominal | Nominal | Nominal |
|          | ominal | tional | ominal |         |         |         |
|          |        |        |        | E-CDEM  | E-CDEM  | Turned  |
|          | Turned | El     | E      | -HVPS=5 | -HVPS=2 | on      |
|          | on     | ec-CH- | -CDEM- |         |         |         |
|          | 8      | HVPS=0 | HVPS=2 | P-CDEM  | P-CDEM  | 6 June  |
|          | /30/04 |        |        | -HVPS=4 | -HVPS=3 | at      |
|          |        | Pr     | P      |         |         | 14:05z  |
|          | El     | ot-CH- | -CDEM- |         |         |         |
|          | ec-CH- | HVPS=0 | HVPS=0 |         |         |         |
|          | HVPS=4 |        |        |         |         |         |
|          |        | 1 of 4 |        |         |         |         |
|          | Pr     | T      |        |         |         |         |
|          | ot-CH- | scopes |        |         |         |         |
|          | HVPS=0 | inop   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SBUV** |        | De     |        | Oper    | Nominal | Nominal |
|          |        | graded |        | ational |         |         |
|          |        |        |        |         | Anode   | Anode   |
|          |        | Grate  |        | D       | Mode    | mode    |
|          |        | motor  |        | egraded |         |         |
|          |        | sticks |        | Ozone   | Plan    | since 6 |
|          |        |        |        | data    | sweep   | July    |
|          |        | Flex   |        |         | mode    | 13:30z  |
|          |        | memory |        | Backup  |         |         |
|          |        | 3      |        | D       | S       |         |
|          |        | (giant |        | iffuser | tandard |         |
|          |        | step)  |        | inop    | Ops     |         |
|          |        | ops    |        |         | Pr      |         |
|          |        | sus    |        | Primary | ocedure |         |
|          |        | pended |        | D       | changes |         |
|          |        | 1      |        | iffuser |         |         |
|          |        | 2/2/03 |        | dep     | fort    |         |
|          |        |        |        | loyment | hcoming |         |
|          |        | R      |        | problem |         |         |
|          |        | educed |        | TOAR    |         |         |
|          |        | oper   |        | 426     |         |         |
|          |        | ations |        |         |         |         |
|          |        |        |        | AMSU    |         |         |
|          |        | No     |        | EMI     |         |         |
|          |        | data   |        | causing |         |         |
|          |        | re     |        | erratic |         |         |
|          |        | ported |        | B       |         |         |
|          |        | by     |        | ehavior |         |         |
|          |        |        |        | in PMT  |         |         |
|          |        | pr     |        | cathod, |         |         |
|          |        | oducts |        | range 3 |         |         |
|          |        | di     |        |         |         |         |
|          |        | vision |        |         |         |         |
|          |        | 7      |        |         |         |         |
|          |        | /25/05 |        |         |         |         |
|          |        |        |        |         |         |         |
|          |        | "tran  |        |         |         |         |
|          |        | sient" |        |         |         |         |
|          |        | a      |        |         |         |         |
|          |        | nomaly |        |         |         |         |
|          |        |        |        |         |         |         |
|          |        | 1 Sept |        |         |         |         |
|          |        | 05     |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | N/A    | ON      | ON      | ON      |
| SADPOS** |        |        |        |         |         |         |
|          |        |        |        | Enabled | ENABLED | Enabled |
|          |        |        |        | MFa     |         |         |
|          |        |        |        | ctor50% | Timer = | Timer   |
|          |        |        |        |         | 12mins  | =12     |
|          |        |        |        | Timer = |         | mins    |
|          |        |        |        | 12 mins |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **T      | N      | N      | TCE26  | Nominal | TCE3H   | All     |
| HERMAL** | ominal | ominal | & 15H  |         | Batt 2A | TCE's   |
|          |        |        |        | TCE24   | heater  | active  |
| Heaters, | TCE's  |        | Telem  | OFF     | failed  |         |
| louvers  | back   |        | i      | 4/14    | ON,     |         |
|          | to     |        | nvalid | (AVHRR  | turned  |         |
| TCE's    | n      |        |        | H&L)    | off     |         |
|          | ominal |        | TOAR   |         | 8/26/03 |         |
|          | c      |        | 432    | HIRS    | TOAR    |         |
|          | onfigu |        |        | Filter  | 428     |         |
|          | ration |        | HIRS   | heater  |         |         |
|          | fol    |        | FW     | turned  | CLOSED  |         |
|          | lowing |        | Heat   | OFF     | 9/14/04 |         |
|          | 7      |        | tuned  | 1/18/05 | no      |         |
|          | /25/04 |        | ON 17  |         | cor     |         |
|          | U      |        | Apr    |         | rective |         |
|          | Vtrip. |        | and    |         | action  |         |
|          |        |        | OFF on |         | po      |         |
|          |        |        | 18 Apr |         | ssible. |         |
|          |        |        |        |         |         |         |
|          |        |        | TCE2   |         | AMSU-A1 |         |
|          |        |        | 4L&25L |         | s       |         |
|          |        |        | (HIRS  |         | urvival |         |
|          |        |        | &      |         | heaters |         |
|          |        |        | AVHRR) |         | on      |         |
|          |        |        | failed |         | 1       |         |
|          |        |        | 5      |         | 0/29/03 |         |
|          |        |        | /13/98 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | RCE    |         |         |         |
|          |        |        | ther   |         |         |         |
|          |        |        | mostat |         |         |         |
|          |        |        | failed |         |         |         |
|          |        |        | 5      |         |         |         |
|          |        |        | /13/98 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | T      |         |         |         |
|          |        |        | hermal |         |         |         |
|          |        |        | dow    |         |         |         |
|          |        |        | ntrend |         |         |         |
|          |        |        | occ    |         |         |         |
|          |        |        | urring |         |         |         |
|          |        |        | on     |         |         |         |
|          |        |        | spac   |         |         |         |
|          |        |        | ecraft |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
|          | *      | *      | *      | **N16** | **N17** | ### N18 |
|          | *N12** | *N14** | *N15** |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-12 No change from last week. N12 supports have increased to average
one per day which improves the analytical

situation somewhat. EMOSS Power subsystem engineer Carl Gliniak is not
recommending any reconfigurations to the power balance equation at this
time.

NOAA-14: No changes since previous report. The SBUV has operated
nominally since its "transient anomaly" of 1 Sept (reported

last week) was resolved by EMOSS engineers. The AVHRR has begun to show
signs of less stability in recent days although it is still operating
within very nominal values (illustration 1) and its imagery is still
perfect. The N14 power balance remains nominal although the battery
voltages are starting to dip into lower than average values (below 20
volts) just before exiting eclipse (illustration 2). With the safe state
trigger set at 18.98 volts, this should not be a problem. However,
should APT (VTX transmitter) be turned back on, (there are currently no
such plans) additional power calculations will be required to ensure
that the batteries will not go undervoltage. Carl Gliniak is EMOSS POC.

Tom Kleepies of ORA is requesting an MSU end of life test on N14 which
will result in the cessation of pitch rotation

For 15 minutes over the course of the N14 spacecrafts orbit). This test
will result in the MSU continuously viewing space in normal scan mode
for 15 minutes in order to characterize the side lobes and any asymmetry
of the MSU. If approved for implementation by NOAA this test must be
complete while OSDPD still had the capability of ingesting data from
NOAA 14, in other words before the move to NSOF next month. According to
Tom, this maneuver was successfully performed on NOAA-6, but the results
were inconclusive and the data appears to have been lost. Data from this
maneuver will help characterize the instrument and assist in refining
the long-term MSU temperature time series. Jon Woodward, Jim Sheperd and
Carl Gliniak are investigating the most effective and safe method for
implementing this test although no approval has yet been forthcoming and
no date has yet been selected for implementation.

NOAA-15: The N15 spacecraft remains in a thermal downtrend although it
appears to be slowing compared to previous weeks. This trend should
continue as the sun angle on the spacecraft works its way down to
approximately 2 degrees in mid-October (which is not as low as the zero
degrees angle it reached at this time last year). The N15 AMSU's were
nominal during the past week (illustration 3) while the AVHRR scan motor
current actually improved again as it got cooler and the HIRS remained
the same, completely nominal (illustration 4). All other N15 subsystems
including ADACS (illustration 5) were performing nominally, from an
engineering perspective, at the time of this report.

NOAA-16: The N16 AVHRR was stable to slightly improved last week with
slightly lower scan motor currents and longer

continued (albeit minor) improvement in synch delta values (illustration
6). Imagery has not experienced a bar code since 2 Sept although wave
patterns continue to persist (illustration 7). The remainder of N16's
subsystems (including HIRS; illustration 8, all three AMSU's
illustration 9 and ADACS, illustration 10) were nominal and stable
during the past week, from an engineering perspective.

NOAA-17: There were no changes from last week. The remaining N17 AMSU's,
the AVHRR and HIRS were all nominal and

stable during the past week (illustration 11 and 12). In addition, the
gyros on N17, which had recently shown some tendencies toward
instability, remained generally stable during the past week (gyro-2 more
so than gyro-1 see illustration 13). Regardless, both the gyros on N17
are operating at, or near all time highs and increased vigilance over
them will be maintained by EMOSS into the foreseeable future. Jim
Sheperd is EMOSS POC for this subsystem.

NOAA-18: There were no changes to N18 configurations or health during
the past week. The N18 payload suite performed in a

nominal and stable manner (excepting HIRS channel 1) during the past
week although the synch delta operational profile appears to be changing
on N18 (illustrations 14-18). In additional, TOAR 452 which was
concerned with the MHS "along track misalignment problem" was closed at
the 13 Sept TOAR Board which was supported by EMOSS engineering. The
"problem" was determined to be an MIU buffering routine which delays
data transmission by two scan periods which is in fact the way this
subsystem was designed to operate. Therefore, no actual anomaly exists
and no spacecraft related corrective actions are required.

Another TOAR (453) was opened by NASA regarding the N18 battery charge
to discharge ratio which is showing a

different characteristic than that of other spacecraft, especially
battery #3 (illustration 19). This TOAR is still under investigation. In
a similar but probably unrelated matter, EMOSS engineer Carl Gliniak
detected another out of family power situation on N18 which occurs
between the solar array current (NSOLARRI) and the bus current
(NPSEBUSI) at the time when full capacity cutback is reached (meaning
that the bus voltage comes under shunt mode regulation). At this time,
on all other POES spacecraft, the array current typically registers as
2-3 amps higher than the bus current. This difference represents a
trickle charge of about .6 amps per battery and other losses before the
regulated bus voltage for the given spacecraft load. Conversely, on N18
there is basically zero difference between array and bus current at this
point the implications of which engineers are still attempting to
determine (illustration 20). Carl has brought this situation to the
attention of Lockheed and NASA engineers and is the EMOSS POC for
coordinating the investigative effort with them.

The investigation into the pitch oscillation TOAR continues. To support
this investigation, a test is currently being discussed among NOAA and
NASA engineers that will result in the N18 solar array being slewed
completely around (360 degrees) while in the dark/eclipse portion of its
orbit. This test is tentatively scheduled for 20 and 21 Sept.

N18 (cont)

If implemented, this slew will be performed twice, once in each
direction over these two separate days. EMOSS engineer Jon Woodward is
supporting the planning stage of this operation by identifying and
preparing spacecraft macros and CPU telemetry changes that will be
necessary to support the operations while NASA engineers are scheduling
TDRSS and McMurdo to provide additional support. To prepare for this
implementation, EMOSS engineer Will Chadwick implemented a McMurdo
readiness test (per NASA request) on 12 Sept. This test turned on STX4
transmitter and configured AIP for continuous downlink over several
orbits. This test completed successfully (illustration 21). Otherwise
the ADACS was nominal and relatively stable during the past reporting
period (illustrations 22 & 23).

Discussions regarding the possible swap of N18's VTX (APT) assignment
are also underway among the engineering and scheduling divisions.
Apparently, the VTX currently in operation (#2 at 137.9125 MHZ) on N18
is often interfered with by cellular devises while orbiting over the
European continent. To alleviate this condition a swap to VTX#1 (137.1
MHZ) is under consideration. No date has yet been determined for this
reconfiguration, if it should occur.

Misc: Engineers are currently discussing the efficacy of swapping out a
number of the safe state recorders throughout the

POES constellation. The reasons behind this possibility is that the safe
state recorders remain idle for very long periods

of time and there is some belief that "exercising them" and "resting"
other playback recorders might prolong all of these components. No date
is planned as yet for this operation. Will Chadwick and Jon Woodward are
EMOSS POC's.

A solar eclipse (moon blocking the sun) will be intermittently
experienced by all POES spacecraft on 3 Oct between the hours 07:35 and
13:27z. EMOSS engineers have already initiated analysis into this event
to determine what, if any reconfigurations will be required to safely
bring each spacecraft through this event. Since SADPOS timers have been
increased to 12 minutes (from their previous 7-8 minutes) turning off
SADPOS is not expected to be necessary. EMOSS analysis and
recommendations for all spacecraft will be included in the next Weekly
Report.

 

![](media/image1.png){width="8.25in" height="6.3597222222222225in"}

**Illustration 1: NOAA-14 AVHRR Health Analysis**

(Less stable in recent days although imagery remains nominal.
Engineering is watching the trend closely.)

![](media/image2.png){width="8.25in" height="6.3597222222222225in"}

Illustration 2: N14 Power Balance Analysis

(Battery voltages getting a little lower than desired although still
well above undervoltage threshold. Turning on APT data, not currently
planned, could change this equation.)

![](media/image3.png){width="8.25in" height="6.027083333333334in"}

Illustration 3: N15 AMSU Health Analysis

(Nominal with a continuing thermal downtrend which is expected to last
for 2-3 more weeks.)

![](media/image4.png){width="8.25in" height="6.3597222222222225in"}

Illustration 4: N15 HIRS and AVHRR Health Analysis

(Nominal and stable.)

![](media/image5.png){width="8.375in" height="6.45625in"}

Illustration 5: N15 Attitude Control Health Analysis

(Generally nominal and historically stable, but will continue to be
closely scrutinized by engineering.)

![](media/image6.png){width="8.25in" height="6.3597222222222225in"}

Illustration 6: N16 AVHRR Health Analysis

(Generally stable and possibly improved to a small degree.)

![](media/image7.png){width="8.0in" height="7.110416666666667in"}

**ILLUSTRATION 7: N16 AVHRR Imagery Analysis**

(No bar codes since 2 Sept, but MIRP rephases still occur almost every
rev and wave patterns still persist on HRPT images.)

![](media/image8.png){width="8.125in" height="6.263194444444444in"}

**ILLUSTRATION 8: N16 HIRS Health Analysis**

Generally nominal and stable although the high vs. low operating range
of the filter motor continues to be near or at an all time high.
Consideration (but no plans) being given to going to high power mode.

![](media/image9.png){width="8.25in" height="6.027083333333334in"}

Illustration 9: N16 AVHRR Health Analysis

(The cause of the bar codes that started on 31 Aug after 02:00 may never
be known since the data is missing during the time of the last good
image and the start of bar coded images.

**ILLUSTRATION 9: N16 AMSU Health Analysis**

(Nominal and stable)

![](media/image10.png){width="8.25in" height="6.189583333333333in"}

Illustration 10: N16 AVHRR Current Imagery Analysis

(No bar codes today, wave patterns persist.)

**Illustration 10: N16 Attitude Control Analysis**

(Nominal and stable using this limited perspective)

![](media/image11.png){width="8.25in" height="6.3597222222222225in"}

Illustration 11: N16 HIRS Health Analysis

(About the same as last week.)

**Illustration 11: N17 AMSU Health Analysis**

(Nominal and stable for the two remaining operational AMSU's on N17)

![](media/image12.png){width="8.25in" height="6.3597222222222225in"}

Illustration 12: N17 HIRS & AVHRR Health Analysis

(Both nominal and stable, although the HIRS filter wheel current is
showing slightly increased "activity".)

![](media/image13.png){width="8.25in" height="6.3597222222222225in"}

Illustration 13: N17 Attitude Control Health Analysis

(About the same as last week, nominal and stable.)

![](media/image14.png){width="8.375in" height="6.45625in"}

Illustration 14: N18 AMSU Health Analysis

(About the same as last week, nominal and stable.)

![](media/image15.png){width="8.375in" height="6.45625in"}

Illustration 15: N18 MHS Health Analysis

(About the same as last week, nominal and stable. Noise spikes are
caused by ABE software and are not indicative of MHS performance.)

![](media/image16.png){width="8.25in" height="7.288194444444445in"}

Illustration 16: N18 AVHRR Health Analysis

(About the same as last week, although it appears a change in the
operational profile of the synch delta value is starting. Note Hurricane
Ophelia on the image above.)

![](media/image17.png){width="8.25in" height="6.3597222222222225in"}

Illustration 17: N18 HIRS Health Analysis

(About the same as last week, nominal and stable.)

![](media/image18.png){width="8.25in" height="6.3597222222222225in"}

Illustration 18: N18 misc. Payload Health Analysis

![](media/image19.png){width="8.25in" height="6.124305555555556in"}

**N17 N18**

Illustration 19: N18 Power Health Analysis

(Comparing N18 vs. N17 battery charge to discharge ratios. Upper left
plot shows a close-up of the N18 charge to discharge relationship. TOAR
453 has been generated in response to a concern primarily with the N18
battery-3 C/D ratio.)

![](media/image20.png){width="8.25in" height="6.48125in"}

N18 N17 (similar for N16)

Illustration 20: N18 vs. N17 Solar Array Current vs. Bus Current
Comparison.

(Three orbits for each spacecraft. Note the difference when batteries
reach full charge. With N18 array and bus current are approximately
equal, on other KLM spacecraft array current is usually 2-3 amps higher
than bus current.)

![](media/image21.png){width="8.375in" height="6.465277777777778in"}

Illustration 21: N18 DHS/Comm Analysis

(About the same as last week. DDR current spikes investigation
continues. The upper left plot shows a comparison of N17 DDR currents
vs. that of N18, note the difference. Plot in lower left shows the
McMurdo test on JDAY 255.5 while other, shorter duration turn-ons are
Svalbard IJPS tests.)

![](media/image22.png){width="8.375in" height="6.45625in"}

Illustration 22: N18 MIMU Health Analysis

(Nominal and stable.)

![](media/image23.png){width="8.25in" height="6.39375in"}

Illustration 23: N18 Attitude Control Health Analysis

(Nominal and stable, relative to recent weeks. TOAR investigation into
pitch oscillation continues. A test which will move the solar array 360
degrees is planned for 20 & 21 Sept in support of this investigation.)

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING September 9, 2005

  ---------- ---------- ---------- ---------- ---------- ---------- ----------
  DAY/DATE   NOAA-12    NOAA-14    NOAA-15    NOAA-16    NOAA-17    NOAA-18

  FRI. 09/02 N/A        +235 msec  -270 msec  +170 msec  +107 msec  +012 msec

  SAT. 09/03 N/A        +239 msec  -273 msec  +172 msec  +107 msec  +012 msec

  SUN. 09/04 -317 msec  +233 msec  -272 msec  +171 msec  +110 msec  +015 msec

  MON. 09/05 -313 msec  +240 msec  -274 msec  +172 msec  +110 msec  +015 msec

  TUE. 09/06 -314 msec  +241 msec  -274 msec  +174 msec  +110 msec  +015 msec

  WED. 09/07 -317 msec  +242 msec  -276 msec  +173 msec  +110 msec  +017 msec

  THU. 09/08 -316 msec  +240 msec  -277 msec  +174 msec  +111 msec  +018 msec
  ---------- ---------- ---------- ---------- ---------- ---------- ----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-14: As of 12/23/03 the TIP clock is corrected daily by --7.0 msec
to compensate for drift.

NOAA-15: As of 04/22/03 the TIP clock is corrected daily by --8.0 msec
to compensate for drift.

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

NOAA-17: As of 12/23/03 the TIP clock is corrected daily by --3.0 msec
to compensate for drift.

NOAA-12: As of 12/10/03 the TIP clock is corrected daily by +6.5 msec to
compensate for drift.

\* A clock jump of -500 milliseconds on 04/17/05 due to fractional
second daily ETCUP. A clock

> jump of +500 milliseconds on 07/01/05 due to fractional second daily
> ETCUP. Alternating +/-
>
> 500 millisecond clock jumps will ccur at 76-day intervals as long as
> fractional second daily
>
> ETCUP is utilized to manage clock drift. The next +500 millisecond
> jump is expected on 09/15/05.

[POES Engineering Contact List]{.underline}

[Government]{.underline}

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

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

Mickey Fitzmaurice: NOAA, POES Bus, IJPS 301-817-4016

Nicolaie Todirita (Todi): NOAA Ground Systems 301-817-4229

[EMOSS-2 Contractor]{.underline}

Jeff Devine: EMOSS POES Lead 301-817-4020

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

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

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

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

Sally House EMOSS POES Payloads 301-817-4026

William Chadwick EMOSS, POES Comm and DHS 301-817-4015