**POLAR Spacecraft Status As of: Tues, 01 Nov, 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     | 17     | 1       | 2       | 1       |
|          | :56=AN | :57=AN | :57=AN | 4:54=AN | 2:24=AN | 3:54=AN |
|          |        |        |        |         |         |         |
|          | STIP   | STIP   | GAC    | GAC&LAC | GAC&LAC | GAC &   |
|          | data   | data   | data   | data    | data    | LAC     |
|          | only   | only   | only   |         |         | data    |
+----------+--------+--------+--------+---------+---------+---------+
| **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**    |        |        |        |         |         |         |
|          | Rec    | OBP1   |        |         |         |         |
|          | ursive | inope  |        |         |         |         |
|          | SCT    | 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 | ### [RG | # [Nomi | Nominal |
|          | Mode]  | Mode]  | Mode]  | YRO 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     | E       | Rgmode= | Gyro-A  |
| Z=Pitch  | mode=M | ode=Di | mode=M | stimate | Monitor | MIMU-2  |
|          | onitor | sabled | onitor | pitch   |         |         |
|          |        |        |        |         | Gyro-3  | Z-wheel |
|          | Gyro   | Gyro   | Gyro-3 | Rgmode= | Off     | -Pitch  |
|          | cha    | cha    | Off    | PASSIVE | 6/10/04 |         |
|          | ns=XYZ | ns=XYZ | 6      |         |         | TOAR    |
|          |        |        | /26/00 | Gyro-1  | Gyro    | 447     |
|          |        | I      | Gyro   | Off     | ch      |         |
|          |        | nvesti | cha    | 1       | ans=AAB |         |
|          |        | gating | ns=AAB | 0/24/05 |         |         |
|          |        | insta  |        |         | Gyro-2  |         |
|          |        | bility | N2 Low | Gyro-3  | invest  |         |
|          |        |        | PSI    | Off     | igation |         |
|          |        |        | i      | 6/10/04 |         |         |
|          |        |        | nvalid |         |         |         |
|          |        |        |        | Gyro    |         |         |
|          |        |        |        | chans   |         |         |
|          |        |        |        | X-Z     |         |         |
|          |        |        |        | only    |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | TOAR    |         |         |
|          |        |        |        | 454     |         |         |
|          |        |        |        | ge      |         |         |
|          |        |        |        | nerated |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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      | each   | daily  | orbit   |         |         |
|          | nabled | orbit  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **TIP    | 1      | 1      | 2      | 2       | 1       | 1       |
| SIDE**   |        |        | (since |         |         |         |
|          |        |        | 4      | since   | Analog  |         |
|          |        |        | /3/03) | 4/18/05 | telem   |         |
|          |        |        |        |         | d       |         |
|          |        |        | #2 has |         | rifting |         |
|          |        |        | 3      |         |         |         |
|          |        |        | chans  |         |         |         |
|          |        |        | 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  | Safes   |
|          | estate | 1B     | 1B EOT | festate | ate=SSR | tate=5B |
|          | 5B     |        |        | 3A      | 2B      |         |
|          |        |        |        |         |         | Current |
|          |        |        |        | 4B STIP | 2.66    | spikes  |
|          |        |        |        | only    | Mbps    |         |
|          |        |        |        |         | reverse | TOAR    |
|          |        |        |        |         | p       | 450     |
|          |        |        |        |         | layback |         |
|          |        |        |        |         | 18 Oct  |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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 | Co     | 1       |         |         |
|          |        |        | nflict | 1/15/00 |         |         |
|          |        |        | with   |         |         |         |
|          |        |        | N12    |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | T      |         |         |         |
|          |        |        | urnOFF |         |         |         |
|          |        |        | 11     |         |         |         |
|          |        |        | /13/05 |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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   | 2      | 1--     | TOAR424 | 3 -     |
| mhz      | Pl     | --     | om     | P       | low     | P       |
|          | ayback | Pl     | ni=rcp | layback | power   | layback |
| 2 = lcp  |        | ayback |        |         |         |         |
| 1702.5   |        |        | Power  | 4 --    | 2 & 4   | 2-P     |
| mhz      |        |        | drop   | P       | P       | layback |
|          |        |        |        | layback | layback |         |
| 3= rcp   |        |        | TOAR   |         |         | 4-Test  |
| 1707.0   |        |        | 446    | & MCM   | 1-      | &       |
| mhz      |        |        |        | usage   | Standby | Standby |
|          |        |        | 4-Pl   |         |         |         |
| 4= rcp   |        |        | ayback | 3 low   | STX-1   |         |
| 2247.5   |        |        |        | power   | Power   |         |
| mhz      |        |        | 1,     | unused  | drop    |         |
|          |        |        | 2,3-De |         | TOAR    |         |
|          |        |        | graded |         | 443.    |         |
+----------+--------+--------+--------+---------+---------+---------+
| #        | [Ar    | [Array | [Array | [Array  | [Array  | [Array  |
| ## POWER | rayOff | Off    | Off    | Off     | Off.    | Off.    |
|          | +60]   | -45]   | -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      | 10     | 1      | 7/16/02 | 1/29/04 | underli |
| V/T      | /23/05 | /19/05 | /25/01 |         |         | ne}ince |
| rates,   |        |        |        | Eclipse | Eclipse | 6/6/05  |
| eclipse  | Full   | E      | Full   | all     | all     |         |
| states   | Sun    | clipse | Sun    | year    | year    | Array   |
| and sun  |        | all    |        |         |         | 360     |
| angle)   | Sun    | year   | Sun    | Sun     | Sun     | slew    |
|          | Angle  |        | Angle  | Angle   | Angle   | test on |
| Solar    | 12 end | Sun    | 6      | 41      | at 68   | 21 & 22 |
| eclipse  | dow    | angle  |        |         |         | Sept    |
| occurred | ntrend | 48     | U      | End     | Steady  |         |
| interm   |        |        | ptrend | Do      | trend   | Eclipse |
| ittently | Batts  | Steady | to 15  | wntrend |         | all     |
| for 5    | 1      | trend  | in     |         | Batts   | year    |
| hours on | &2=LRC |        | m      | Batts   | 1-3=    |         |
| 3 Oct 05 |        | Batts  | id-Dec | 1-3=    | LRC     | TOAR    |
|          | Batt   | 1-3=   | 05     | LRC     |         | 453 on  |
| no       | 1&2    | LRC    |        |         | V/T=    |         |
| impact   | V/T=4  |        | Batts  | V/T=4/8 | 4/8     | Batt    |
|          |        | Batts  | 1-3=   |         |         | C/D     |
|          | Shunt  | 1&3V   | LRC    | SA      | SA      | ratio   |
|          | de     | /T=6/9 |        | CANT=22 | CANT=37 |         |
|          | graded |        | V      | degs    | degs    | Batts   |
|          |        | Batt2  | /T=7/9 |         |         | 1-3=LRC |
|          | SA     | VT=7/9 |        |         |         |         |
|          | C      |        | SA     |         |         | Batts   |
|          | ANT=37 | VT     | C      |         |         | 1-3     |
|          | degs   | change | ANT=37 |         |         | V/T=4/8 |
|          |        | 10/19  | degs   |         |         |         |
|          |        |        |        |         |         | SADE -1 |
|          |        | De     |        |         |         | 7/29/05 |
|          |        | graded |        |         |         |         |
|          |        | shunts |        |         |         | SA      |
|          |        |        |        |         |         | CANT=22 |
|          |        | SA     |        |         |         |         |
|          |        | C      |        |         |         |         |
|          |        | ANT=22 |        |         |         |         |
|          |        | degs   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | N      | E      | N      | I       | ###     | Nominal |
| *AVHRR** | ominal | rratic | ominal | mproved | Nominal |         |
|          |        |        |        |         |         | 3A-B    |
|          |        | Scan   | Rare   | No bar  | 3A-B    | switch  |
|          |        | motor  | major  | codes   | switch  | D       |
|          |        | c      | scan   | since   | enabled | isabled |
|          |        | urrent | motor  | 12 Oct. |         | 8/05/05 |
|          |        | surged | s      | Status  |         |         |
|          |        | 27     | urges. | u       |         | Channel |
|          |        | Sept   | Last   | pgraded |         | 3B only |
|          |        |        |        | 1       |         |         |
|          |        | Fr     | In     | 0/18/05 |         |         |
|          |        | equent | cident |         |         |         |
|          |        | i      | 11     | TCE24   |         |         |
|          |        | magery | /18/04 | OFF     |         |         |
|          |        | bar    |        | 4/14/04 |         |         |
|          |        | codes  |        |         |         |         |
|          |        |        |        | Channel |         |         |
|          |        | Red    |        | 3B      |         |         |
|          |        | Status |        | only.   |         |         |
|          |        | 29 Sep |        |         |         |         |
|          |        |        |        |         |         |         |
|          |        | Ch     |        |         |         |         |
|          |        | annels |        |         |         |         |
|          |        | 2&4    |        |         |         |         |
|          |        | APT    |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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 | Imagery | cross   |         |
|          | off    | tional | status | high    | track   | Status  |
|          | 6      |        |        | levels  | misal   | dow     |
|          | /23/05 | Occa   | Since  | radi    | ignment | ngraded |
|          |        | sional | 16 May | ometric | .       | to      |
|          | For    | loss   | 05     | noise   |         | Yellow  |
|          | power  | of     |        |         |         | 15 Aug  |
|          | b      | Fwheel | FW     | TOAR    |         | 05      |
|          | alance | synch  | Abrupt | 441     |         |         |
|          |        |        | return | open    |         | #####   |
|          | Filter |        | to     |         |         | ### LW  |
|          | Wheel  |        | n      | Occ     |         | channel |
|          | turned |        | ominal | asional |         |  1-12 n |
|          | OFF    |        | 7      | major   |         | oise TO |
|          | 10/    |        | /12/05 | FM      |         | AR 448  |
|          | 17/02. |        |        | surges, |         |         |
|          |        |        | FW     | most    |         | LW      |
|          |        |        | m      | recent  |         | Noise   |
|          |        |        | ode=Hi |         |         | i       |
|          |        |        | Powr   | 12/9/04 |         | mproved |
|          |        |        |        |         |         | since   |
|          |        |        |        |         |         | 14 Oct  |
+----------+--------+--------+--------+---------+---------+---------+
| ###      |        |        |        |         |         | Nominal |
|  MHS/MIU |        |        |        |         |         |         |
|          |        |        |        |         |         | Space   |
|          |        |        |        |         |         | View=0  |
+----------+--------+--------+--------+---------+---------+---------+
| **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   |        |         |         |         |
|          |        | plans  |        |         |         |         |
|          |        | un     |        |         |         |         |
|          |        | derway |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SSU**  |        | N      |        |         |         |         |
|          |        | ominal |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DCS**  | N      | N      | N      | Nominal | Nominal | Nominal |
|          | ominal | ominal | ominal |         |         |         |
|          |        |        |        |         |         | DRU's   |
|          |        |        |        |         |         | 1-7 On  |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | DRU8    |
|          |        |        |        |         |         | off     |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | TOAR    |
|          |        |        |        |         |         | 449     |
+----------+--------+--------+--------+---------+---------+---------+
| **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   |        |         |         |         |
|          |        |        |        |         |         |         |
|          | TED    | Auto   |        |         |         |         |
|          | l      | nomous |        |         |         |         |
|          | evel=3 | TED    |        |         |         |         |
|          | as of  | sh     |        |         |         |         |
|          | 27     | utdown |        |         |         |         |
|          | Sept   | 24     |        |         |         |         |
|          |        | Sept   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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    |         |         |
|          |        | Tra    |        | EMI     |         |         |
|          |        | nsient |        | causing |         |         |
|          |        | a      |        | erratic |         |         |
|          |        | nomaly |        | B       |         |         |
|          |        |        |        | ehavior |         |         |
|          |        | 1 Sept |        | in PMT  |         |         |
|          |        | 05     |        | cathod, |         |         |
|          |        |        |        | range 3 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | 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 |        | TCE2   | heater  |         |         |
|          | fol    |        | 4L&25L | turned  | CLOSED  |         |
|          | lowing |        | (HIRS  | OFF     | 9/14/04 |         |
|          | 7      |        | &      | 1/18/05 | no      |         |
|          | /25/04 |        | AVHRR) |         | cor     |         |
|          | U      |        | failed |         | rective |         |
|          | Vtrip. |        | 5      |         | action  |         |
|          |        |        | /13/98 |         | po      |         |
|          |        |        |        |         | ssible. |         |
|          |        |        | RCE    |         |         |         |
|          |        |        | ther   |         | AMSU-A1 |         |
|          |        |        | mostat |         | s       |         |
|          |        |        | failed |         | urvival |         |
|          |        |        | 5      |         | heaters |         |
|          |        |        | /13/98 |         | on      |         |
|          |        |        |        |         | 1       |         |
|          |        |        | T      |         | 0/29/03 |         |
|          |        |        | hermal |         |         |         |
|          |        |        | dow    |         |         |         |
|          |        |        | ntrend |         |         |         |
|          |        |        | ended  |         |         |         |
|          |        |        | 10 Oct |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
|          | *      | *      | *      | **N16** | **N17** | ### N18 |
|          | *N12** | *N14** | *N15** |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+

**COMMENTS/CHANGES:**

NOAA-12: There were no changes to N12 during the past reporting period.

NOAA-14: The N14 AVHRR continues to perform very erratically with the
scan motor current frequently spiking by as much as

100 mAmps before quickly falling back to more nominal values and then
spiking again (illustration 1). Synch delta values are also relatively
erratic despite the MIRP rephase enable command being implemented out of
stored commands once per rev over the South Pole. The affect of this
rephase operation is difficult to ascertain since N14 has no GAC (and
thus the rephase effect cannot be seen) and there are long gaps between
supports that result in less synch delta information being processed by
EMOSS engineers. However, analysis of HRPT imagery continues to
intermittently observe bar codes N14 HRPT images. However, this problem
also appears intermittent, not continuous as it was in past weeks.
Therefore engineers are assuming that the rephase enable operation may
actually be helping increase the percentage of nominal images
(illustration 2).

The N14 EPS subsystem has been relatively nominal since its major
reconfiguration on 19 Oct. Engineers are closely

monitoring the bus and partial shunt voltages to ensure that both remain
stable and nominal. Presently, the bus voltage is running at a higher
daily standard deviation that at any time during its mission which can
be indicative of less stability. Much of this can be accounted for by
the fact that N14 is now in a permanent eclipse season and the shunts
appear to be operating within acceptable norms. However, these
components will continue to be closely monitored to ensure that the bus
voltage does not surge and the shunts do not degrade further than they
already have (illustration 3and 4).

There was no additional coordination or discussion that ensued on the
proposed N14 "Pitch Over" test for MSU end-of-life space view
calibration during the past week. Implementation of a recursive stored
command table into the N14 operations remain TBD.

NOAA-15: N15 is approaching the start of a new VTX (APT data) RF
conflict period with N12. On 13 Nov the N15 VTX-1 will be turned off
until the conflict ends on 13 Dec. Otherwise there were no significant
changes to N15 in the past week (except for a small change in AVHRR scan
motor current operating profile) and all subsystems appear to be
operating nominally (illustrations 6-9) .

NOAA-16: N16 payloads were nominal during the past week (illustration
10). The N16 AVHRR scan motor current was much

improved last week with the scan motor current approaching its nominal
range, synch delta values remaining below MIRP rephase trigger
thresholds and imagery remaining free of bar codes and MIRP rephase
frame losses. HRPT imagery does continue to show some wave patterns but
even these are less pronounced than has been the case for several months
(illustrations 11-13).

There was basically no change to the N16 ADACS-gyro situation during the
past week. Tiger team meetings continue

and TOAR 454 was submitted but no resolution has yet been determined.
The subsystem continues to operate in Reduced Gyro mode (passive
monitoring) with roll being estimated. Most ADACS values have been
stable since

gyro-1 was turned off although many of them are operating in different
ranges than before the anomaly (i.e. The Y-axis reaction wheel is
operating at significantly higher motor currents than previously)
although all of these values have been determined to be within
acceptable limits. Controllers continue to monitor N16 on every orbit
and are prepared to take contingency actions in the event there is a
mission threatening event on the spacecraft related to the IMU. To
ensure maximum contact with N16, STX-4 is being turned on over McMurdo.
MCM is being used to cover the N-16 CDA blind orbits.

The N16 gyro-1 component remains RED in status while the ADACS subsystem
remains YELLOW. See illustrations 14-16 for graphical depictions of N16
ADACS performance over the past 10 days and illustrations 17-18 for
performance during the past half day.

NOAA-17: The gyros on N17 were relatively stable last week and EMOSS
continues to monitor them closely, especially in light of

the situation which just occurred on N16 gyro-1. The AVHRR scan motor
current fell slightly this week (improved?) continuing a trend that
began last week, reaching its lowest level in over a year last with
synch delta following suit (illustrations 19 & 20). In general lower
currents are considered better, conversely, operational profile changes
can sometimes be a harbinger of imminent problems and so closer scrutiny
is warranted. Otherwise N17 ADACS was nominal last week (illustration
21) nor were there any other changes of note to N17 status or
configuration.

NOAA-18: EMOSS engineers were notified that the long wave channel noise
on N18 HIRS had a significantly improved in the

past 2 weeks, see illustration 22 for a comparison of before and after
imagery. Otherwise there was no change to the HIRS, AVHRR or AMSU's
engineering data during this time (illustration 23) and the ADACS on N18
was also stable throughout the reporting period (illustrations 24 and
25).

![](media/image1.png){width="8.125in" height="6.111111111111111in"}

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

(The large current spikes continue affecting the scan motor. At times
the value is nominally within the 150 mAmps range. It just hasn't been
able to stabilize there.)

![](media/image2.png){width="8.125in" height="5.093055555555556in"}

Illustration 2: N14 AVHRR Imagery & Synch Delta Analysis

(Imagery is intermittently bar coded in concert with the frequent scan
motor current surges. It appears that the rephase enabled operations now
being performed once per orbit over the South Pole, has been useful at
increasing the number of nominal images between current surges. The red
colored "RE" in the top synch delta plot indicates when rephase enable
operations began every orbit on N14.)

![](media/image3.png){width="8.25in" height="6.268055555555556in"}

Illustration 3: N14 EPS Analysis (Part 1)

(A little less stable on the bus voltage which is actually running at
the highest DAILY standard deviation in its history, see upper right
plot, while the shunts are now working a little harder. Batteries low
darkness voltages all remain comfortably above power survival safestate
threshold. This spacecraft configuration may require closer scrutiny
than the pass load currently allows.)

![](media/image4.png){width="8.25in" height="6.268055555555556in"}

Illustration 4: N14 EPS Analysis (Part 2)

(Battery temps seemed to have stabilized. At a glance, the bus current,
upper right plot, shows a similar profile as the AVHRR scan motor,
although the surges are nothing more than transmitter on commands.)

![](media/image5.png){width="8.125in" height="6.104166666666667in"}

Illustration 5: N14 AVHRR Scan Motor vs. Bus Current Analysis

(It was observed that bus current and AVHRR scan motor current had
similar "surge profiles". Plot above connecting each with a red line
shows them to [not]{.underline} be correlated.)

![](media/image6.png){width="8.25in" height="6.268055555555556in"}

Illustration 6: N15 Payload Motor Current Analysis

(Solidly nominal although the AVHRR scan motor is again rising and has
shown somewhat less stability in recent weeks, although nothing
approaching its previous anomalous behaviors.)

![](media/image7.png){width="8.25in" height="6.268055555555556in"}

Illustration 7: N15 Payload Thermal Analysis

(All payload, and many other spacecraft components temperatures have
been rising in recent weeks now that the sun angle trend is back up. )

![](media/image8.png){width="8.25in" height="6.427083333333333in"}

Illustration 8: N15 AVHRR Imagery & Synch Delta Analysis

(Everything appears nominal although synch delta appears to also be on
the increase along with the scan motor current, again to only a
relatively minor degree.)

![](media/image9.png){width="8.25in" height="6.268055555555556in"}

**ILLUSTRATION 9: N15 ADACS Analysis**

(Nominal although gyro-1 current is slightly less stable than desired.
Subsystem is now under a lot closer scrutiny because of the similarity
with and problems of N16 gyros..)

**[N16 (NOT 15)]{.underline}**

![](media/image10.png){width="8.25in" height="6.268055555555556in"}

NOTE: ALL PLOTS ARE N16 NOTHWITHSTANDING THE LABLES

**ILLUSTRATION 10: N16 Payload Motor Current Analysis**

(Nominal and stable relative to recent performance.)

![](media/image11.png){width="8.25in" height="6.204861111111111in"}

Illustration 11: N16 AVHRR Health Analysis

(Improved since last week and now approaching nominal range.)

![](media/image12.png){width="8.125in" height="6.111111111111111in"}

Illustration 12: N16 Synch Delta Analysis

(Improved from previous weeks to the point that MIRP rephasing is no
longer occurring when rephase is enabled.)

![](media/image13.png){width="7.854166666666667in"
height="6.445138888888889in"}

Illustration 13: N16 AVHRR Imagery Analysis

(Also improved from previous weeks to the point that there are no longer
frame losses caused by MIRP rephasing (RE) when rephase I enabled and
wave patterns on HRPT images are less prominent than previous weeks.)

![](media/image14.png){width="8.25in" height="6.268055555555556in"}

Illustration 14: N16 Gyro and Wheel Currents. Before, During and After
Gyro-1 Anomaly

(Little changed since gyro-1 was turned off on JDAY 297, 24 Oct.)

![](media/image15.png){width="8.25in" height="6.268055555555556in"}

Illustration 15: N16 IMU, Wheel Temps and Yaw Updates. Before, During
and After Gyro-1 Anomaly

(Little changed since gyro-1 was turned off on JDAY 297, 24 Oct.)

![](media/image16.png){width="8.25in" height="6.323611111111111in"}

Illustration 16: N16 Axis momentums and errors

(Little changed since gyro-1 was turned off on JDAY 297, 24 Oct.)

![](media/image17.png){width="8.0in" height="6.131944444444445in"}

Illustration 17: N16 Recent (today) RWheel health

(Y-wheel current looks to be improving somewhat. Sustainable?)

![](media/image18.png){width="8.125in" height="6.227777777777778in"}

Illustration 18: N16 Recent (today) axis performance

(No apparent changes from previous days,)

![](media/image19.png){width="8.25in" height="6.323611111111111in"}

Illustration 19: N17 Payload Motor Current Analysis

(All stable and nominal, AVHRR continues to fall. Is this change in
operational profile an improvement? Lower scan motor current values are
usually considered to be a positive development but operational changes
can also be a harbinger of potential instabilities.)

![](media/image20.png){width="8.125in" height="5.773611111111111in"}

Illustration 20: N17 AVHRR Synch Delta and Imagery Analysis

(Imagery remains nominal, synch delta, like scan motor current has been
falling recently and is now approaching zero. Typically such a
development would be considered positive but concerns about stability of
this value, like the scan motor current, may also be warranted.)

![](media/image21.png){width="8.25in" height="6.323611111111111in"}

Illustration 21: N17 ADACS Health Analysis

(N17 has similar gyro problems as those exhibited by N16. In addition,
N17 gyro-2 recently had a spin motor current surge that resulted in a
TOAR being generated. Closer scrutiny will be maintained on this
subsystem into the foreseeable future. This week was relatively stable
and nominal.)

![](media/image22.png){width="8.0in" height="7.125in"}

1 2 3 4 5 6 7

Illustration 22: N18 HIRS Long Wave Channel Comparison

(Noise improvements were noted by Products personnel starting on or
about 14 Oct. The most recent image, bottom, appears completely nominal
especially compared to previous images.)

![](media/image23.png){width="8.125in" height="6.227777777777778in"}

Illustration 23: N18 Payload Motor Current Analysis

(Stable and nominal last week.)

![](media/image24.png){width="8.125in" height="6.227777777777778in"}

Illustration 24: N18 ADACS RWheel Analysis

(About the same as last week; generally nominal, notwithstanding the
TOAR on the

Z-wheel.)

![](media/image25.png){width="8.0in" height="6.131944444444445in"}

Illustration 25: N18 ADACS Axis Analysis

(About the same as last week; generally nominal.)

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING October 28, 2005

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

  FRI. 10/21 -866 msec  +260 msec  -321 msec  +200 msec  +144 msec  +077 msec

  SAT. 10/22 -865 msec  +259 msec  -322 msec  +203 msec  +146 msec  +079 msec

  SUN. 10/23 -866 msec  +258 msec  -323 msec  +204 msec  +147 msec  +080 msec

  MON. 10/24 -866 msec  +258 msec  -325 msec  +204 msec  +146 msec  +083 msec

  TUE. 10/25 -869 msec  +259 msec  -326 msec  +328 msec  +148 msec  +082 msec

  WED. 10/26 -875 msec  +260 msec  -326 msec  +329 msec  +150 msec  +083 msec

  THU. 10/27 -870 msec  +263 msec  -326 msec  +323 msec  +152 msec  +084 msec
  ---------- ---------- ---------- ---------- ---------- ---------- ----------

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 07/01/05 due to fractional
second daily ETCUP. A clock

> jump of -500 milliseconds on 09/15/05 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 11/30/05.