**POLAR Spacecraft Status As of: Tues, 20 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    |
+----------+--------+--------+--------+---------+---------+---------+
| **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      | Array   |
|          |        | check  | cha    | ans=AAA | ans=AAB | slew    |
|          |        | Di     | ns=AAB |         |         | test    |
|          |        | sabled |        |         | Gyro-2  | 21-23   |
|          |        | when   | N2 Low |         | invest  | Sept    |
|          |        | 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 | Sw      | 450     |
|          |        |        |        | only    | itching |         |
|          |        |        |        |         | sa      | Plan    |
|          |        |        |        |         | festate | sa      |
|          |        |        |        |         | to #2B  | festate |
|          |        |        |        |         | 21 Sept | switch  |
|          |        |        |        |         |         | to 5b   |
|          |        |        |        |         |         | date    |
|          |        |        |        |         |         | TBD     |
+----------+--------+--------+--------+---------+---------+---------+
| **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 to |
|          |        | con    |        |         | with    | #1 @    |
|          |        | flict, |        |         | N14     | 137.1   |
|          |        | turnon |        |         |         | planned |
|          |        | tbd    |        |         |         | NLT 27  |
|          |        |        |        |         |         | Sept    |
+----------+--------+--------+--------+---------+---------+---------+
| **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   | Consi  | Full   | all     | all     |         |
| states   | Sun    | dering | Sun    | year    | year    | **      |
| and sun  |        | move   |        |         |         | *[Array |
| angle)   | Sun    |        | Sun    | Sun     | Sun     | 360     |
|          | Angle  | E      | Angle  | Angle   | Angle   | slew    |
| *        | 19     | clipse | 8      | 49      | at 68   | test    |
| **[Solar | dow    | all    | dow    |         |         | planned |
| eclipse  | ntrend | year   | ntrend | Do      | Steady  | for]{   |
| interm   | to 12  |        | to 2   | wntrend | trend   | .underl |
| ittently | m      | Sun    | degs   | to 41   |         | ine}*** |
| for 5    | id-Oct | angle  | on 10  | on 30   | Batts   |         |
| hours on | 05     | 48     | Oct 05 | Oct 05  | 1-3=    | ***[21  |
| 3 Oct    |        |        |        |         | LRC     | & 22    |
| 05       | Batts  | Steady | Batts  | Batts   |         | Sept]{  |
| ]{.under | 1      | trend  | 1-3=   | 1-3=    | V/T=    | .underl |
| line}*** | &2=LRC |        | LRC    | LRC     | 4/8     | ine}*** |
|          |        | Batts  |        |         |         |         |
| ***[All  | Batt   | 1-3=   | V      | V/T=4/8 | SA      | Eclipse |
| sp       | !&2    | LRC    | /T=7/9 |         | CANT=37 | all     |
| acecraft | V/T=4  |        |        | SA      | degs    | year    |
| ]{.under |        | Batts  | SA     | CANT=22 |         |         |
| line}*** | Shunt  | 1&3V/  | C      | degs    |         | TOAR    |
|          | de     | T=7/11 | ANT=37 |         |         | 453 on  |
|          | graded |        | degs   |         |         |         |
|          |        | Batt2  |        |         |         | Batt    |
|          | SA     | V      |        |         |         | C/D     |
|          | C      | T=8/11 |        |         |         | ratio   |
|          | ANT=37 |        |        |         |         |         |
|          | degs   | SS     |        |         |         | Batts   |
|          |        | t      |        |         |         | 1-3=LRC |
|          |        | rigger |        |         |         |         |
|          |        | =18.98 |        |         |         | Batts   |
|          |        |        |        |         |         | 1-3     |
|          |        | Shunt  |        |         |         | V/T=4/8 |
|          |        | De     |        |         |         |         |
|          |        | graded |        |         |         | SADE -1 |
|          |        |        |        |         |         | 7/29/05 |
|          |        | SA     |        |         |         |         |
|          |        | C      |        |         |         | SA      |
|          |        | ANT=22 |        |         |         | CANT=22 |
|          |        | degs   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | 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   |        |         |         |         |
|          |        | plans  |        |         |         |         |
|          |        | un     |        |         |         |         |
|          |        | derway |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **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 over 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 while the

AVHRR continues to show signs of slightly less stability although it is
still operating within nominal values

(illustration 1) and its imagery is still perfect. In analyzing the
power balance situation on N14, EMOSS engineer Carl Gliniak is
[considering]{.underline} recommending a small reduction in the solar
array offset (no more than 10 degrees to -45 from the current -55) in
order to slightly increase power production which he has calculated to
be just slightly less than optimum as battery voltages have started to
dip below 20 volts upon exiting eclipse. The power survival safe state
trigger set at 18.98 battery volts, which means that no N14 undervoltage
trip appears imminent, at least as long as APT data (VTX transmitter) is
not brought on line (there are no such plans in the offing). This
analysis has taken into account that the degraded shunts on N14 have
been operating nominally and assumes that they will continue to do so
after any array offset move (illustration 2).

EMOSS and NOAA engineers met with Tom Kleepies of ORA on Thursday 15
Sept to discuss his proposed end-of-life

test for the N14 MSU (described in last weeks report) whereby spacecraft
pitch rotation will be ceased for as long as one full orbit while the
MSU continuously views deep space. No date has been proposed for this
test, nor has "final official approval" yet been forthcoming. However,
EMOSS engineers are analyzing the risks and implementation strategies
for performing such a test if and when it is approved. For planning
purposes only, the team is using a mid-November implementation data
(while actual implementation must occur before ORA moves into NSOF.) Jon
Woodward, Jim Sheperd, Jim Walters Will Chadwick and Jeff Devine were
POES team members supporting this meeting.

NOAA-15: The N15 spacecraft remains in a thermal downtrend although
which should continue as the sun angle on the spacecraft works its way
down to approximately 2 degrees in mid-October. The N15 AMSU's were
nominal during the past week (illustration 3) as was AVHRR and the HIRS
(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 AMSU's, HIRS and AVHRR were generally stable and
nominal during the past week (illustration 6). The

N16 AVHRR actually improved with slightly lower scan motor currents and
synch deltas that are no longer "pegging out". The result of this synch
delta improvement has been that since 18 Sept, imagery is no longer
showing the rephase frame loss (black line) over the South Pole because
the rephase enable is no longer resulting in an actual MIRP rephase.
Furthermore, AVHRR imagery has not experienced a bar code since 2 Sept
although wave patterns continue to persist (illustration 7). The
remainder of N16's subsystems were also 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 8). 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 9). 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.

Per Procedure 050920.1330 generated and distributed by EMOSS engineer
Will Chadwick: The safe state recorder on N17 will be changed from DTR1B
to DDR2B to better utilize the solid state recorders and free up one
additional recorder. Because DTR1B is the safe state recorder, it is not
being utilized by scheduling and is reserved for TIP data recording
should N18 enter safe state. This recorder allows for 113 minutes of GAC
data and 225 minutes of TIP data. Changing the safe state recorder on
N17 to DDR2B will allow for 360 minutes of GAC data and 2880 minutes of
TIP data. This change has two benefits due to DDR2B being about three
times larger than DTR1B, it will allow for it to be used daily for
regular recordings and have excess capacity should it be required to
record TIP upon entering safe state. See Table 7-6 from NOAA KLM P&CH
for more information on recording/playback times for various DTR/DDR
Modes and Sub modes. The safe state recorder change will be performed on
9/21/05 during rev 16856 at Wallops at 14:18:30. Will Chadwick has
generated and distributed in preparation for this operation and is
co-EMOSS POC for its implementation along with Jon Woodward

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 as did all the other subsystems (illustrations 10-13) relative to
the known problems discussed in previous weekly reports.

The investigation into the pitch oscillation TOAR continues. To support
this investigation, a test that will slew the solar array 360 degrees
(while in darkness) has been scheduled for 21 and 22 Sept starting at
14:30z, outlined in Procedure 050916.1031 written by EMOSS engineer Jon
Woodward and included in this Weekly Report (following this narrative).
The test will utilize both McMurdo and TDRSS to maximize the spacecrafts
visibility while the array slew is in effect. To ensure both assets
could support the spacecraft EMOSS engineer Will Chadwick oversaw two
successful data flow tests: The first with McMurdo occurred on 12 Sept
and the second with TDRSS occurred on 20

(N18 cont)

Sept. Both tests turned on STX4 transmitter and configured AIP (at
McMurdo) or TIP (on TDRSS) for continuous downlink which were
successfully received by these sites and nominally transmitted back to
SOCC.

The N18 APT data will be switched to VTX-1 (137.1 MHZ) because VTX-2
(137.9125 MHZ), currently in operation, is often interfered with by
cellular devises while orbiting over the European continent. This change
will be implemented NLT 27 Sept (actual date still TBD). Will Chadwick
is EMOSS POC.

Like N17 N18 will have its safestate recorder changed in within the next
week (although the actual date remains TBD). As per Procedure
050920.1230 written (but not yet distributed) by Will Chadwick: The safe
state recorder on N18 will be changed from DDR1B to DDR5B to better
utilize the solid state recorders and free up one additional recorder.
Because DDR1B is the safe state recorder, it is not being utilized by
scheduling and is reserved for TIP data recording should N18 enter safe
state. This recorder allows for 180 minutes of GAC data and 1440 minutes
of TIP data. Changing the safe state recorder on N18 to DDR5B will allow
for 360 minutes of GAC data and 2880 minutes of TIP data. This change
has two benefits due to DDR5B being two times larger than DDR1B, it will
allow for it to be used daily for regular recordings and have excess
capacity should it be required to record TIP upon entering safe state.
See Table 7-6 from NOAA KLM P&CH for more information on
recording/playback times for various DDR Modes and Submodes.

Misc: A solar eclipse (moon blocking the sun) will be intermittently
experienced by all POES spacecraft on 3 Oct between

07:35 and 13:27z. Using the EMOSS eclipse model which has proven highly
accurate in the past, Will Chadwick has generated the predictions for
this event as it relates to all POES spacecraft. The bottom line is that
no reconfigurations are recommended in preparation for this event. See
Illustrations 14a-f for the in-depth analysis used by EMOSS engineers to
reach this conclusion.

**[Procedure Number:]{.underline} 050916.1031 [PREPARED BY:]{.underline}
J. Woodward**

**[SUBJECT/TITLE:]{.underline} N18 full slew rotation**

On Sept 20-22 NOAA-18 will be undergoing testing to help determine the
cause of the pitch oscillations seen since launch. The test involves
commanding the array to slew speed where it will remain until it has
completed a full revolution. We will test both slew directions. The slew
period will be completed entirely during the darkness period of the
orbit so that power levels and array health are unaffected. Temporary
changes will also be made to CPU telemetry to gather additional data.

One of the possible causes of the oscillations is the rotation of the
solar array. By placing the array in slew speed the characteristics of
array rotation will be changed and if the signal changes, the array is
responsible for the oscillations.

**[Day 1:]{.underline}**

Beginning in the morning of Sept 20^th^ (Jday 263), rev 1736
preparations for the test period are planned. The changes to the CPU
telemetry table will occur on this contact. The first change will be for
increased updates on solar array information. The second affects MIMU
raw telemetry. It will replace the attitude error angle telemetry on the
backup CPU. In normal operations this will have no effect on spacecraft
health since error angles are not computed on the backup CPU. APTCHERR,
AROLLERR and AYAWERR will read values that do not correspond to the
actual error angles.

We plan on removing this change to the telemetry table when the testing
is completed (1766 WAL, on 22 Sept). However, if we switch CPUs during
this period, the attitude error angles (assuming SCP1 is connected to
BUS A, APTCHERR, AROLLERR and AYAWERR) will not read correct values.
Therefore, the CP to remove the telemetry changes will need to be run
early. The CP is named REMMIMTLM and it has a pass parameter. The
correct syntax to run the CP is: **[CP START=REMMIMTLM
C/N=C]{.underline}** This CP will return SCP 1's CPU telemetry table to
its nominal state. Also, the macros to complete the testing will be
loaded this contact (but not activated).\
**[Day 2:]{.underline}**

The first testing will occur on 21^st^ Sept (Jday 264), rev 1751 BAR.
The activities on this contact are to place the SATCU in mode A, turn on
STX 4 (and configure for TIP), analog dwell on the Boom angle and begin
the reverse slew test macro. (Macro logic flows are included at the end
of this document.)

The slew will take place after the Barrow (AOS 16:00z) contact once
darkness is entered. We will have TDRSS coverage for most of this
portion of the test. The currently scheduled time for coverage is 16:13z
to 16:33z. 1751 McMurdo (16:46z) is scheduled, where we will revert to
SATCU mode B. The next CDA pass is rev 1752 WAL, where we will revert to
normal DHS and COMM status (STX 4 off, and analog dwelling on the bus
voltage). This concludes testing for Day 1.

Operations wise, all CDA contacts will be taken on TCS1 as per normal.
However, we will have TCS2 set up for TDRSS and MCM data during those
portions of the orbit. The operations crew will set up the correct paths
and sites for this period.

**[Day 3:]{.underline}**

Day 3's testing is very similar to Day 2's. The only differences between
the two are that the slew will be in the forward direction, TDRSS
coverage may not be available and the CPU telemetry changes will be
removed at the conclusion of the test. Times for CDA contacts are as
follows: Test activation at 1765 FBK (15:50z), monitoring at 1765 MCM
(16:35z) and conclusion at 1766 WAL (17:16z).

Operations wise, all CDA contacts will be taken on TCS1 as per normal.
However, we will have TCS2 set up for TDRSS (possibly) and MCM data
during those portions of the orbit. The operations crew will set up the
correct paths and sites for this period.

**[Macro logic flows:]{.underline}**

[Macro 9 Place the SAD in Reverse slew for 27.27 minutes]{.underline}\
If patch current less than 10, place SAD in ground control\
One second later, Enable macro 3 (safety macro)\
One second later, command SAD to reverse slew\
27.41 minutes later, return control to SADCS with SADPOS as backup

[Macro A Place the SAD in Forward slew for 17.75 minutes]{.underline}\
If patch current less than 10, place SAD in ground control\
One second later, command SAD to forward slew\
One second later, Enable macro 3 (safety macro)\
17.67 minutes later, return control to SADCS with SADPOS as backup\
\
[Macro B After 28 minutes place SADCS in control with SADPOS as
backup]{.underline}\
Wait 28 minutes, return control to SADCS with SADPOS as backup

![](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. Possibility of a small solar array
offset move being recommended in the coming days.)

![](media/image3.png){width="8.375in" height="6.11875in"}

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="8.375in" height="6.11875in"}

Illustration 6: N16 Primary Payload Motor Current Analysis

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

![](media/image7.png){width="5.998611111111111in"
height="5.635416666666667in"}

**ILLUSTRATION 7: N16 AVHRR Imagery Analysis**

(No bar codes since 2 Sept, and no MIRP rephase frame losses since 18
Sept now that synch delta has continued to improve. However, wave
patterns still persist on HRPT images.)

![](media/image8.png){width="8.25in" height="6.3597222222222225in"}

**ILLUSTRATION 8: N17 Payload Motor Currents Analysis**

(Generally nominal and stable.)

![](media/image9.png){width="8.25in" height="6.3597222222222225in"}

**ILLUSTRATION 9: N17 ADACS Analysis**

(Generally nominal and stable.)

![](media/image10.png){width="8.375in" height="6.11875in"}

Illustration 10: N18 Payload Motor Current Analysis

(Nominal and stable)

![](media/image11.png){width="8.375in" height="6.11875in"}

**ILLUSTRATION 11: N18 Battery Health Analysis (close-up)**

(Engineers still investigating battery charge to discharge TOAR)

![](media/image12.png){width="8.375in" height="6.45625in"}

Illustration 12: N18 DDR and Comm Analysis

(About the same as last week)

![](media/image13.png){width="8.375in" height="6.45625in"}

ILLUSTRATION 13: N18 ADACS Health Analysis

(About the same as last eek.)

![](media/image14.png){width="8.25in" height="6.280555555555556in"}

Illustration 14a: N12 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N12 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge at approx 60% illumination intensity (or less) which
is called "darkness threshold" for planning purposes. Only one rev (at
08:45z see upper plot) will cause N12 to discharge its batteries and
only for 6 minutes after which a quick and full recovery of this full
sun spacecraft should result. N12 has no SADPOS so autonomous takeover
of the solar array is not a concern. No yaw updates will occur during
"deep eclipse" (20% intensity or less) so autonomous swap to YGC mode is
not a concern.

![](media/image15.png){width="8.25in" height="6.280555555555556in"}

Illustration 14b: N14 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N14 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge at approx 60% illumination intensity which is called
"darkness threshold" for planning purposes. There are no revs where sun
intensity will be low enough to cause N14 to discharge its batteries
(upper plot). N14 has no SADPOS so autonomous takeover of the solar
array is not a concern. No yaw updates will occur during any eclipse
time frame so autonomous swap to YGC mode is not a concern.

![](media/image16.png){width="8.375in" height="6.375694444444444in"}

Illustration 14c: N15 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N15 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge at approx 60% illumination intensity (or less) which
is called "darkness threshold" for planning purposes. There are two revs
where the sun intensity will go low enough to cause the batteries to
discharge. The most significant rev will be at 12:15z (upper plot) which
will result in batteries discharging for approximately 7 minutes, which
is not a concern. N15 has no SADPOS so autonomous takeover of the solar
array is not a concern. No yaw updates will occur during any eclipse so
autonomous swap to YGC mode is not a concern.

![](media/image17.png){width="8.25in" height="6.284027777777778in"}

Illustration 14d: N16 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N16 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge below (approx) 60% illumination intensity which is
called "darkness threshold" for planning purposes. Only one rev (at
11:20z, see upper plot) will cause N16 to discharge its batteries and
only for 3 minutes after which a quick and full recovery should result.
N16 does have SADPOS enabled meaning at below 60% intensity (approx) a
timer will start counting down from 12 minutes. If greater than 60%
intensity is not achieved within those 12 minutes, the timer expires and
SADPOS will take control of the array and move it to 0 degree offset.
Since only 3 minutes of darkness are predicted, this provides a 9 minute
margin of safety, considered more than ample by engineering because of
the proven accuracy of the EMOSS model. No yaw updates will occur during
any part of the eclipse so autonomous swap to YGC mode is not a concern.

![](media/image18.png){width="8.375in" height="6.370138888888889in"}

Illustration 14e: N17 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N17 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge below (approx) 60% illumination intensity which is
called "darkness threshold" for planning purposes. Only one rev (at
09:36z, see upper plot) will cause N17 to discharge its batteries for 9
minutes after which a quick and full recovery should result. N17 does
have SADPOS enabled meaning that below 60% intensity (approx) a timer
will start counting down from 12 minutes. If greater than 60% intensity
is not achieved within those 12 minutes, the timer expires and SADPOS
will take control of the array and move it to 0 degree offset. Since 9
minutes of darkness are predicted, this provides a 3 minute margin of
safety, considered ample by engineering because of the proven accuracy
of the EMOSS model. No yaw updates will occur during any eclipse so
autonomous swap to YGC mode is not a concern.

![](media/image19.png){width="8.25in" height="6.284027777777778in"}

Illustration 14f: N18 Eclipse Analysis (no reconfigurations
recommended.)

Red asterisk on bottom plot indicates when N18 will experience
"unexpected shadowing" (i.e. the effects of the eclipse). Batteries
start to discharge below (approx) 60% illumination intensity which is
called "darkness threshold" for planning purposes. Only one rev (at
11:45z, see upper plot) will cause N18 to discharge its batteries for 7
minutes after which a quick and full recovery should result. N18 does
have SADPOS enabled meaning below 60% (approx) intensity a timer will
start counting down from 12 minutes. If greater than 60% intensity is
not achieved within those 12 minutes, the timer expires and SADPOS will
take control of the array and move it to 0 degree offset. Since 7
minutes of darkness are predicted, this provides a 5 minute margin of
safety, considered ample by engineering because of the proven accuracy
of the EMOSS model. No yaw update will occur during any eclipse so
autonomous swap to YGC mode is not a concern.

N17 Single Event Upset Scrub Log for the past 2 weeks and the entire
mission

![](media/image20.png){width="7.750694444444444in"
height="3.3805555555555555in"}

![](media/image21.wmf){width="7.624305555555556in"
height="4.768055555555556in"}

#  POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING September 16, 2005

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

  FRI. 09/09 -317 msec  +238 msec  -277 msec  +177 msec  +110 msec  +019 msec

  SAT. 09/10 -317 msec  +238 msec  -279 msec  +176 msec  +113 msec  +020 msec

  SUN. 09/11 -322 msec  +237 msec  -279 msec  +178 msec  +113 msec  +022 msec

  MON. 09/12 -321 msec  +243 msec  -281 msec  +178 msec  +114 msec  +023 msec

  TUE. 09/13 -321 msec  +244 msec  -283 msec  +178 msec  +114 msec  +027 msec

  WED. 09/14 -323 msec  +245 msec  -283 msec  +177 msec  +115 msec  +028 msec

  THU. 09/15 -825 msec  +246 msec  -284 msec  +179 msec  +117 msec  +028 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