**POLAR Spacecraft Status As of: Tues 29 Mar 05 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-N18 |
|          |        |        |        |         |         |         |
| **Com    | AM:    | AM:    | AM:    | PM:     | AM:     | Planned |
| ponent** | 1      | 2      | 1      | 1430=AN | 2224=AN | PM      |
|          | 648=AN | 019=AN | 817=AN |         |         |         |
|          |        |        |        | GAC&LAC | GAC&LAC | Plan    |
|          | STIP   | STIP   | GAC    | data    | data    | A       |
|          | data   | data   | data   |         |         | N=14:00 |
|          | only   | only   | only   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **LA     | 05     | 12     | 05     | 0       | 6/24/02 | ######  |
| UNCHED** | /14/91 | /30/94 | /13/98 | 9/21/00 |         | # Launc |
|          |        |        |        |         |         | h date  |
|          |        |        |        |         |         |         |
|          |        |        |        |         |         | #       |
|          |        |        |        |         |         | ######  |
|          |        |        |        |         |         | 11May05 |
+----------+--------+--------+--------+---------+---------+---------+
| **CNTL   | OBP2   | OBP2   | OBP2   | OBP2    | OBP2    | Dress   |
| OBP**    |        |        |        |         |         | R       |
|          |        | OBP1   |        |         |         | ehearse |
|          |        | inope  |        |         |         | #1      |
|          |        | rative |        |         |         |         |
|          |        |        |        |         |         | Co      |
|          |        |        |        |         |         | mpleted |
|          |        |        |        |         |         | 13Jan   |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS**  | B-BUS  | B-BUS  | B-BUS  | B-BUS   | B-BUS   | Dress   |
|          |        |        |        |         |         | R       |
|          | XSU-1  | XSU2   | XSU-1  | XSU-1   | XSU-1   | ehearse |
|          |        | (XSU1  |        |         |         | #2      |
|          |        | inop)  |        |         |         |         |
|          |        |        |        |         |         | 14Apr05 |
+----------+--------+--------+--------+---------+---------+---------+
| **BUS    | NO     | NO     | NO     | NO      | NO      |         |
| VETO**   |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | [N     | [N     | [N     | #####   | #####   | New     |
| *ADACS** | ominal | ominal | ominal | # [Nomi | # [Nomi |         |
|          | Mode]  | Mode]  | Mode]  | nal Mod | nal Mod | ring    |
| X=Yaw    | {.unde | {.unde | {.unde | e]{.und | e]{.und | laser   |
|          | rline} | rline} | rline} | erline} | erline} | gyro    |
| Y=Roll   |        |        |        |         |         |         |
|          | RG     | Rgm    | Rg     | Rgmode= | Rgmode= |         |
| Z=Pitch  | mode=M | ode=Di | mode=M | Monitor | Monitor |         |
|          | onitor | sabled | onitor |         |         |         |
|          |        |        |        | Gyro-3  | Gyro-3  |         |
|          | Gyro   | Gyro   | Gyro-3 | Off     | Off     |         |
|          | cha    | cha    | Off    | 6/10/04 | 6/10/04 |         |
|          | ns=XYZ | ns=XYZ | 6      |         |         |         |
|          |        |        | /26/00 | Gyro    | Gyro    |         |
|          |        | SS     | Gyro   | ch      | ch      |         |
|          |        | check  | cha    | ans=AAA | ans=AAB |         |
|          |        | Di     | ns=AAB |         |         |         |
|          |        | sabled |        |         |         |         |
|          |        | when   | N2 Low |         |         |         |
|          |        | mo     | PSI    |         |         |         |
|          |        | de=YGC | i      |         |         |         |
|          |        |        | nvalid |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **RXO**  | PRI    | PRI    | PRI    | PRI     | PRI     |         |
|          |        |        |        |         |         |         |
|          | BU     | BU     | daily  | Daily   | Daily   |         |
|          | random | random | bias   | Bias    | Bias    |         |
|          | e      | e      | -8 mS  | --5.5   | --3 mS  |         |
|          | nables | nables |        | mS      |         |         |
|          |        | daily  | +100   |         |         |         |
|          | daily  | bia    | mS     | -100 mS |         |         |
|          | bi     | s--7.0 | 31Au04 | 31Au04  |         |         |
|          | as+6.5 | mS     |        |         |         |         |
|          | mS     |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **CLOCK  | 2      | 2      | 2      | 2       | 2       |         |
| DIV**    |        |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **MIRP** | Ex     | Ex     | Ex     | E       | E       |         |
|          | ternal | ternal | ternal | xternal | xternal |         |
|          | Synch  | Synch  | Synch  | Sync    | Sync    |         |
|          |        |        | R      |         |         |         |
|          | R      | R      | ephase | Rephase | Rephase |         |
|          | ephase | ephase | 0730   | each    | Enabled |         |
|          | E      | 0730   | daily  | orbit   |         |         |
|          | nabled | Daily  |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **TIP    | 1      | 1      | 2      | 1       | 1       |         |
| SIDE**   |        |        |        |         |         |         |
|          |        |        | (since | Analog  | Analog  |         |
|          |        |        | 4/     | telem   | telem   |         |
|          |        |        | 23/03) | d       | d       |         |
|          |        |        |        | rifting | rifting |         |
|          |        |        | 3      |         |         |         |
|          |        |        | Ch     | **[Plan |         |         |
|          |        |        | annels | swap    |         |         |
|          |        |        | inop   | 19Apr]  |         |         |
|          |        |        |        | {.under |         |         |
|          |        |        |        | line}** |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DTRs** | 3A, 4, | 1, 2B, | 1, 2,  | 1       | 1,2,3,4 | All     |
|          | 5B     | 5      | 3, 4   | ,2,3,4A |         | solid   |
|          |        | Safe   | Saf    |         | Safes   | state   |
|          | Saf    | state- | estate | Sa      | tate=1B | digital |
|          | estate | 1B     | 1B EOT | festate |         | re      |
|          | 5B     |        |        | 3A      | D       | corders |
|          |        | 3B     |        |         | TR2-SSR |         |
|          | As of  | inop   |        | 4B STIP |         |         |
|          | 8 Dec  | 2/1/05 |        | only    |         |         |
|          | 04     |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **VTX**  | #1 ON  | OFF    | #1 ON  | INOP    | #2 ON   | #       |
|          |        |        |        |         |         | 1=137.1 |
| (APT     | 137.50 | Since  | 137.50 | OFF     | 137.62  | MHZ     |
| data)    | MHZ    | 8      | MHZ    | since   | MHZ     | #2=1    |
|          |        | /14/02 |        | 1       |         | 37.9125 |
|          |        |        |        | 1/15/00 |         | MHZ     |
+----------+--------+--------+--------+---------+---------+---------+
| **BTX**  | #1     | #2     | #1     | #1      | ###     |         |
|          |        |        |        |         | #### #2 |         |
|          | 136.77 | 137.77 | 137.35 | 137.35  |         |         |
|          | MHZ    | MHZ    | MHZ    | MHZ     | 137.77  |         |
|          |        |        |        |         | MHZ     |         |
+----------+--------+--------+--------+---------+---------+---------+
| **STX**  | 1 --   | 3 --   | 2-Omni | 1 --    | 3 --    | STX-3   |
|          | HRPT;  | HRPT   | HRPT   | HRPT;   | HRPT    | fr      |
| #        |        |        |        |         |         | equency |
| 1=1698.0 | 2,3 -  | 2, 1   | 4-Pl   | 2--     | TOAR424 | drift   |
| mhz      | Pl     | --     | ayback | Pl      | low     | problem |
|          | ayback | Pl     |        | ayback; | power   | caused  |
| #        |        | ayback | 1,     |         |         | launch  |
| 2=1702.5 |        |        | 2,3-De | 4 --    | 2 & 4   | slip.   |
| mhz      |        |        | graded | P       | P       |         |
|          |        |        |        | layback | layback | R       |
| #        |        |        |        |         |         | eplaced |
| 3=1707.0 |        |        |        | 3 low   | 1-      | at VAFB |
| mhz      |        |        |        | power   | Standby | und     |
|          |        |        |        | unused  |         | ergoing |
| #        |        |        |        |         | STX-1   | testing |
| 4=2247.5 |        |        |        |         | Swapped |         |
| mhz      |        |        |        |         | with    |         |
|          |        |        |        |         |         |         |
|          |        |        |        |         | STX-4   |         |
|          |        |        |        |         | 22 Mar  |         |
|          |        |        |        |         | 05      |         |
|          |        |        |        |         |         |         |
|          |        |        |        |         | STX-1   |         |
|          |        |        |        |         | output  |         |
|          |        |        |        |         | power   |         |
|          |        |        |        |         | drop    |         |
|          |        |        |        |         | TOAR    |         |
|          |        |        |        |         | 443.    |         |
+----------+--------+--------+--------+---------+---------+---------+
| #        | [Ar    | [Array | [Array | [Array  | [Array  |         |
| ## POWER | rayOff | Off    | Off    | Off     | Off.    |         |
|          | +50]   | -55]   | -45]   | -4      | --4     |         |
| (Array   | {.unde | {.unde | {.unde | 0]{.und | 0]{.und |         |
| offset   | rline} | rline} | rline} | erline} | erline} |         |
| and CANT |        |        |        |         |         |         |
| angle,   | since  | Since  | Since  | Since   | Since   |         |
| charge & | 8      | 8      | 1      | 7/16/02 | 1/29/04 |         |
| V/T      | /31/04 | /21/03 | /25/01 |         |         |         |
| rates,   |        |        |        | Eclipse | Eclipse |         |
| eclipse  | Full   | E      | Full   | all     | all     |         |
| states   | Sun    | clipse | Sun    | year    | year    |         |
| and sun  |        | all    |        |         |         |         |
| angle)   | B      | year   | Sun    | Sun     | Sun     |         |
|          | attery |        | Angle  | Angle   | Angle   |         |
| Sun-Moon | UVtrip | Sun    | 12,    | 54      | at 68   |         |
|          | 7      | angle  | up-    |         |         |         |
| Eclipse  | /25/04 | 38     | trend  | Steady  | Uptrend |         |
| p        |        |        | to 32  | trend   | to 72   |         |
| redicted | Sun    | up     | in     |         | at      |         |
|          | Angle  | trend  | June   | Batts   |         |         |
| For 8    | 23     | to 52  |        | 1-3=    | the end |         |
| Apr 05.  |        | in     | Batts  | LRC     | of May  |         |
|          | U      | June   | 1-3=   |         |         |         |
| 18:0     | ptrend |        | LRC    | V/T=4/8 | Batts   |         |
| 0-23:00Z | to 37  | Batts  |        |         | 1-3=    |         |
|          | in     | 1-3=   | V      | SA      | LRC     |         |
| Minor    | mi     | LRC    | /T=7/9 | CANT=22 |         |         |
| effects  | d-June |        |        | degs    | V/T=    |         |
| on all   |        | Batts  | SA     |         | 4/8     |         |
| spa      | Batts  | 1&3V/  | C      |         |         |         |
| cecraft. | 1      | T=7/11 | ANT=37 |         | SA      |         |
| No       | &2=LRC |        | degs   |         | CANT=37 |         |
| reconfig |        | Batt2  |        |         | degs    |         |
| urations | V/T=4  | V      |        |         |         |         |
| rec      |        | T=8/11 |        |         |         |         |
| ommended | Shunt  |        |        |         |         |         |
|          | de     | SS     |        |         |         |         |
|          | graded | t      |        |         |         |         |
|          |        | rigger |        |         |         |         |
|          | SA     | =18.98 |        |         |         |         |
|          | C      |        |        |         |         |         |
|          | ANT=37 | Shunt  |        |         |         |         |
|          | degs   | De     |        |         |         |         |
|          |        | graded |        |         |         |         |
|          |        |        |        |         |         |         |
|          |        | SA     |        |         |         |         |
|          |        | C      |        |         |         |         |
|          |        | ANT=22 |        |         |         |         |
|          |        | degs   |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| *        | N      | INOP   | N      | Oper    | ###     | New     |
| *AVHRR** | ominal |        | ominal | ational | Nominal | br      |
|          |        | Scan   |        |         |         | ushless |
|          |        | motor  | Rare   | TCE24   | 3A-B    | scan    |
|          |        | s      | major  | OFF     | switch  | motors  |
|          |        | talled | scan   | 4/14/04 | enabled |         |
|          |        |        | motor  |         |         |         |
|          |        | 14 Apr | s      | Occ     |         |         |
|          |        | 04     | urges. | asional |         |         |
|          |        |        | Last   | Image   |         |         |
|          |        |        |        | Wave    |         |         |
|          |        |        | In     | p       |         |         |
|          |        |        | cident | atterns |         |         |
|          |        |        | 11     |         |         |         |
|          |        |        | /18/04 | Chan 3B |         |         |
|          |        |        |        | only.   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | Opera  | Oper    | O       |         |
| MSU-A1** |        |        | tional | ational | FF/INOP |         |
|          |        |        |        |         |         |         |
|          |        |        | Ch14   | Primary | Since   |         |
|          |        |        | inope  | PLLO    | 1       |         |
|          |        |        | rative | chans   | 0/30/03 |         |
|          |        |        |        | 9-14    |         |         |
|          |        |        | Ch11   | bias    | S       |         |
|          |        |        | inope  | shift.  | urvival |         |
|          |        |        | rative |         | heat    |         |
|          |        |        |        | Backup  | on.     |         |
|          |        |        | Record | PLLO    |         |         |
|          |        |        | low    | inop    |         |         |
|          |        |        | com    |         |         |         |
|          |        |        | ponent | Channel |         |         |
|          |        |        | temps  | 9-14    |         |         |
|          |        |        | re     | noise   |         |         |
|          |        |        | versed | i       |         |         |
|          |        |        | trend  | mproved |         |         |
|          |        |        |        | since   |         |         |
|          |        |        |        | 1/19    |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **A      |        |        | N      | Nominal | Nominal |         |
| MSU-A2** |        |        | ominal |         |         |         |
|          |        |        |        | Space   |         |         |
|          |        |        |        | Pos     |         |         |
|          |        |        |        | ition-2 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | Opera  | Oper    | Nominal | R       |
| AMSU-B** |        |        | tional | ational |         | eplaced |
|          |        |        |        |         |         | by MHS  |
|          |        |        | Bias   | Space   |         |         |
|          |        |        | in All | Pos     |         |         |
|          |        |        | Chans. | ition-3 |         |         |
|          |        |        |        |         |         |         |
|          |        |        | Motor  | IPD     |         |         |
|          |        |        | surges | reports |         |         |
|          |        |        | most   | channel |         |         |
|          |        |        | recent | 8       |         |         |
|          |        |        | 11     | degr    |         |         |
|          |        |        | /14/04 | adation |         |         |
|          |        |        |        |         |         |         |
|          |        |        | IPD    |         |         |         |
|          |        |        | R      |         |         |         |
|          |        |        | eports |         |         |         |
|          |        |        | of     |         |         |         |
|          |        |        | de     |         |         |         |
|          |        |        | graded |         |         |         |
|          |        |        | data   |         |         |         |
|          |        |        | on     |         |         |         |
|          |        |        | Chan-3 |         |         |         |
|          |        |        | since  |         |         |         |
|          |        |        | 4/30   |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ### HIRS | ON /   | N      | Opera  | D       | NOMINAL | ####    |
|          | INOP   | OMINAL | tional | EGRADED |         | #### HI |
|          |        |        |        |         | 1 Pixel | RS-4 re |
|          | Turned | Opera  | FW     | L       | cross   | placing |
|          | on     | tional | m      | ongwave | track   |  HIRS-3 |
|          | 8      |        | ode=Hi | channel | misal   |         |
|          | /30/04 | Occa   | Powr   | imagery | ignment |         |
|          |        | sional |        | i       | .       |         |
|          | For    | loss   | FW     | mproved |         |         |
|          | power  | of     | Heater | radi    |         |         |
|          | b      | Fwheel | OFF    | ometric |         |         |
|          | alance | synch  |        | noise   |         |         |
|          |        |        | Fr     | level   |         |         |
|          | Filter |        | equent | is      |         |         |
|          | Wheel  |        | Filter | still   |         |         |
|          | turned |        | Motor  | high    |         |         |
|          | OFF    |        | c      |         |         |         |
|          | 10/    |        | urrent | TOAR    |         |         |
|          | 17/02. |        | "mini" | 441     |         |         |
|          |        |        | surges | su      |         |         |
|          |        |        |        | bmitted |         |         |
|          |        |        | Occa   | 11      |         |         |
|          |        |        | sional | Jan05   |         |         |
|          |        |        | major  |         |         |         |
|          |        |        | FM     | Occ     |         |         |
|          |        |        | c      | asional |         |         |
|          |        |        | urrent | major   |         |         |
|          |        |        | s      | FM      |         |         |
|          |        |        | urges, | surges, |         |         |
|          |        |        | most   | most    |         |         |
|          |        |        | recent | recent  |         |         |
|          |        |        | 1      |         |         |         |
|          |        |        | 2/9/04 | 12/9/04 |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | HIRS    |         |         |
|          |        |        |        | filter  |         |         |
|          |        |        |        | heater  |         |         |
|          |        |        |        | turned  |         |         |
|          |        |        |        | OFF     |         |         |
|          |        |        |        | 1/18/05 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| ###      |        |        |        |         |         | R       |
|  MHS/MIU |        |        |        |         |         | eplaces |
|          |        |        |        |         |         | AMSUB   |
+----------+--------+--------+--------+---------+---------+---------+
| **MSU**  | ON /   | Opera  |        |         |         |         |
|          | INOP   | tional |        |         |         |         |
|          |        |        |        |         |         |         |
|          | Turned | Scan   |        |         |         |         |
|          | on     | motor  |        |         |         |         |
|          | 8      | and    |        |         |         |         |
|          | /30/04 | a      |        |         |         |         |
|          |        | ntenna |        |         |         |         |
|          | For    | pr     |        |         |         |         |
|          | power  | oblems |        |         |         |         |
|          | b      |        |        |         |         |         |
|          | alance |        |        |         |         |         |
|          |        |        |        |         |         |         |
|          | Scan   |        |        |         |         |         |
|          | Motor  |        |        |         |         |         |
|          | OFF    |        |        |         |         |         |
|          | since  |        |        |         |         |         |
|          | 3      |        |        |         |         |         |
|          | /12/03 |        |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SSU**  |        | N      |        |         |         |         |
|          |        | ominal |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **DCS**  | N      | N      | N      | Nominal | Nominal |         |
|          | ominal | ominal | ominal |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARR** |        | N      | Opera  | Oper    | Nominal |         |
|          |        | ominal | tional | ational |         |         |
|          |        |        |        |         | A-side  |         |
|          |        |        | A      | A-side, |         |         |
|          |        |        | -Side, | AGC     | All AGC |         |
|          |        |        | AGC    | Mode    | Mode    |         |
|          |        |        | Mode   |         |         |         |
|          |        |        |        | (B-side |         |         |
|          |        |        | Interm | in FG   |         |         |
|          |        |        | ittent | mode)   |         |         |
|          |        |        | fa     |         |         |         |
|          |        |        | ilures | 243 MHz |         |         |
|          |        |        | for    | = INOP. |         |         |
|          |        |        | 243MHz |         |         |         |
|          |        |        | A&B    |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SARP** |        | OFF    | N      | Nominal | Nominal |         |
|          |        |        | ominal |         |         |         |
|          |        | Power  |        | RCVR    |         |         |
|          |        | F      | RCVR   | B/W = 2 |         |         |
|          |        | ailure | B/W =  |         |         |         |
|          |        |        | 2      |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SEM**  | ON/N   | Opera  | N      | Nominal | Nominal |         |
|          | ominal | tional | ominal |         |         |         |
|          |        |        |        | E-CDEM  | E-CDEM  |         |
|          | Turned | El     | E      | -HVPS=5 | -HVPS=2 |         |
|          | on     | ec-CH- | -CDEM- |         |         |         |
|          | 8      | HVPS=0 | HVPS=2 | P-CDEM  | P-CDEM  |         |
|          | /30/04 |        |        | -HVPS=4 | -HVPS=3 |         |
|          |        | Pr     | P      |         |         |         |
|          | El     | ot-CH- | -CDEM- |         |         |         |
|          | ec-CH- | HVPS=0 | HVPS=0 |         |         |         |
|          | HVPS=4 |        |        |         |         |         |
|          |        | 1 of 4 |        |         |         |         |
|          | Pr     | Tele   |        |         |         |         |
|          | ot-CH- | scopes |        |         |         |         |
|          | HVPS=0 | inope  |        |         |         |         |
|          |        | rative |        |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **SBUV** |        | De     |        | Oper    | Nominal |         |
|          |        | graded |        | ational |         |         |
|          |        |        |        |         | Anode   |         |
|          |        | G      |        | D       | Mode    |         |
|          |        | rating |        | egraded |         |         |
|          |        | motor  |        | Ozone   |         |         |
|          |        | sticks |        | data    |         |         |
|          |        |        |        |         |         |         |
|          |        | Flex   |        | Backup  |         |         |
|          |        | memory |        | D       |         |         |
|          |        | 3      |        | iffuser |         |         |
|          |        | (giant |        | inop    |         |         |
|          |        | step)  |        |         |         |         |
|          |        | ops    |        | Primary |         |         |
|          |        | sus    |        | D       |         |         |
|          |        | pended |        | iffuser |         |         |
|          |        | indefi |        | dep     |         |         |
|          |        | nitely |        | loyment |         |         |
|          |        | on     |        | problem |         |         |
|          |        | 1      |        | TOAR    |         |         |
|          |        | 2/2/03 |        | 426     |         |         |
|          |        |        |        |         |         |         |
|          |        | R      |        | AMSU    |         |         |
|          |        | educed |        | EMI     |         |         |
|          |        | oper   |        | causing |         |         |
|          |        | ations |        | erratic |         |         |
|          |        |        |        | B       |         |         |
|          |        |        |        | ehavior |         |         |
|          |        |        |        | in PMT  |         |         |
|          |        |        |        | cathod, |         |         |
|          |        |        |        | range 3 |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **       |        |        | N/A    | ON      | ON      |         |
| SADPOS** |        |        |        |         |         |         |
|          |        |        |        | Enabled | ENABLED |         |
|          |        |        |        | MFa     |         |         |
|          |        |        |        | ctor50% |         |         |
|          |        |        |        |         |         |         |
|          |        |        |        | Aut     |         |         |
|          |        |        |        | onomous |         |         |
|          |        |        |        | impleme |         |         |
|          |        |        |        | ntation |         |         |
|          |        |        |        | 10/14   |         |         |
+----------+--------+--------+--------+---------+---------+---------+
| **T      | N      | N      | TCE26  | Nominal | TCE3H   |         |
| HERMAL** | ominal | ominal | & 15H  |         | Batt 2A |         |
|          |        |        |        | TCE24   | heater  |         |
| 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      |        | OFF    | 1/18/05 | no      |         |
|          | /25/04 |        |        |         | cor     |         |
|          | U      |        | TCE2   |         | rective |         |
|          | Vtrip. |        | 4L&25L |         | action  |         |
|          |        |        | (HIRS  |         | po      |         |
|          |        |        | &      |         | ssible. |         |
|          |        |        | AVHRR) |         |         |         |
|          |        |        | failed |         | AMSU-A1 |         |
|          |        |        | 5      |         | s       |         |
|          |        |        | /13/98 |         | urvival |         |
|          |        |        |        |         | heaters |         |
|          |        |        | RCE    |         | on      |         |
|          |        |        | ther   |         | 1       |         |
|          |        |        | mostat |         | 0/29/03 |         |
|          |        |        | failed |         |         |         |
|          |        |        | 5      |         |         |         |
|          |        |        | /13/98 |         |         |         |
|          |        |        |        |         |         |         |
|          |        |        | S/C    |         |         |         |
|          |        |        | record |         |         |         |
|          |        |        | low    |         |         |         |
|          |        |        | t      |         |         |         |
|          |        |        | hermal |         |         |         |
|          |        |        | cycle  |         |         |         |
|          |        |        | ended  |         |         |         |
|          |        |        | 27 Feb |         |         |         |
+----------+--------+--------+--------+---------+---------+---------+
|          | *      | *      | *      | **N16** | **N17** | ### N   |
|          | *N12** | *N14** | *N15** |         |         | OAA-N18 |
+----------+--------+--------+--------+---------+---------+---------+

**COMMENTS/CHANGES:**

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

NOAA-14: Spacecraft is operating nominally and power subsystem remains
stable and well above safe state threshold values as the long slow
increase in percentage darkness time per orbit continues
(illustration 1) through mid-June 05.

NOAA-15: The N15 AVHRR showed a slight rise in scan motor current during
the past week as component temperatures also continued there uptrend
(illustration 2). The synch delta was also slightly higher but like the
scan motor current is not, at the moment, something that is cause for
immediate concern. The AVHRR imagery on N15 continues to be nominal.

The N15 HIRS continued its series of mini-surges and return to nominal
during the past week with no reports of imagery degradation being
received by EMOSS and no loss of filter wheel synch (illustration 3).

The AMSU's on N15 were all nominal during the post week as their thermal
trends continued upward as did the solar array current which is now well
above the NSCPONE darkness threshold (illustration 4).

NOAA-16 The N16 AVHRR scan motor current was stable to very slightly
higher last week with stable temperatures and synch

delta values generally stable but rising slowly. In addition, although
the scan motor current is maintaining somewhat higher than it has since
early Dec 2004, imagery has not degraded and even wave patterns are less
evident now as they were several weeks ago when the scan motor current
was lower (illustrations 5&6). As has been the case since Nov 2004,
there has still been no MIRP rephases since Nov 2004 and no bar coded
imagery since last summer. TCE 24 remains powered off.

The N16 HIRS filter motor was generally stable to very slightly higher
last week remaining close to but below its all

time high values (illustration 7). EMOSS continues to detect HIRS
imagery degradation and also receive reports of same, while the HIRS
filter wheel synch and period monitor values remain relatively nominal
and stable.

EMOSS engineers continue preparing for a TIP swap on N16 currently
planned for 19 April 05. Jon Woodward and Will Chadwick are EMOSS POC's
for this operation.

The N16 ADACS was nominal during the past week as depicted in
illustration 8.

NOAA-17: The N17 AVHRR scan motor current was very stable to slightly
higher during the past week while synch delta and

AVHRR component temps were very stable and imagery remained nominal
(illustration 9). EMOSS is continuing to monitor this payload very
closely.

The STX-1 transmitter is no longer in use with STX-4 now taking all of
STX-1 playback requirements. STX-4 is performing nominally since taking
over this responsibility (illustration 10). STX-1 remains very capable
of for future implementation if the need should arise and will remain in
reserve for such a time. Will Chadwick is EMOSS POC for this subsystem.

The N17 ADACS was nominal during the past week as depicted in
illustration 11.

NOAA-N: No changes since previous report. EMOSS engineers are now
preparing for the second dress rehearsal scheduled for

14 Apr. The new launch support calendar has once again been made
available to the general public. The new web link to review this
calendar is <http://sgt-mets.com/~ddipaula/poes-cal.doc>

MISC: A sun-moon eclipse has been predicted by the EMOSS eclipse model.
This eclipse will affect all POES spacecraft over

the course of 3 orbits from approximately 17:59 through 23:04Z on 8 Apr
05. After careful analysis (see graphs at the back of this report) EMOSS
is recommending that no reconfigurations be implemented during this
event. Additional analysis will continue to be performed prior to this
event to ensure the latest information has been considered. Kim Kolb,
Jim Sheperd, Carl Gliniak, Jon Woodward and Jeff Devine are all involved
in this analysis.

For the first time ever, ABE data is being graphically depicted in this
Weekly report (Illustration 1; N14 power). This data was extracted from
the ABE [software]{.underline} and merged into the Greta
[process]{.underline} which has historically been the source of most
graphics in this report. Previously, all such graphics created by the
Greta [process]{.underline} were first extracted from Greta
[software]{.underline}. This coupling of capabilities offers a new proof
of concept and carries the potential to provide future benefit to the
POES program by expanding the capability, flexibility and redundancy of
both ABE software and the Greta process with no capitol expenditures
required. Jeff Devine is EMOSS POC for evolving this process.

![](media/image1.png){width="8.125in" height="6.420833333333333in"}

Illustration 1: N14 Power Analysis

(Nominal as the percentage of time that the spacecraft spends in
darkness slowly increases (to 30% in mid-June)

NOTE: DATA THAT FALLS WITHIN THE YELLOW BOX (JDAY 87) WAS EXTRACTED FROM
ABE vs. GRETA [SOFTWARE]{.underline}. THIS IS THE FIRST EVER SUCESSFUL
EXTRACTION OF ABE TELEMETRY DATA OUTPUT INCORPORATED INTO THE GRETA
[PROCESS.]{.underline}

![](media/image2.png){width="8.25in" height="6.519444444444445in"}

Illustration 2: N15 AVHRR Health Analysis

(Nominal but showing a possible inauspicious trend on scan motor
current.)

![](media/image3.png){width="8.125in" height="6.420833333333333in"}

Illustration 3: N15 HIRS Health Analysis

(Typical operational behavior)

![](media/image4.png){width="8.25in" height="6.519444444444445in"}

Illustration 4: N15 Power Analysis

(Nominal)

![](media/image5.png){width="8.25in" height="6.519444444444445in"}

Illustration 5: N16 AVHRR Health Analysis

(Generally stable with scan motor current spending most of its time in
an area where imagery affects may vary.)

![](media/image6.png){width="8.0in" height="7.886805555555555in"}

Illustration 6: N16 AVHRR Imagery Analysis (HRPT)

Most recent image nominal, all GACS during the past week were also
nominal.

![](media/image7.png){width="8.25in" height="6.491666666666666in"}

TREND DATA HISTORY DATA

Illustration 7: N16 HIRS Health Comparison Analysis (long term vs.
recent).

(Just a little less stable than preferred with a somewhat less than
desirable trend.)

![](media/image8.png){width="8.25in" height="6.491666666666666in"}

Illustration 8: N16 ADACS Analysis

(Nominal)

![](media/image9.png){width="8.25in" height="6.491666666666666in"}

Illustration 9: N17 AVHRR Health Analysis

(Much the same as previous two weeks although showing a
[slight]{.underline} increase in scan motor current.)

![](media/image10.png){width="7.872222222222222in"
height="6.016666666666667in"}

Illustration 10: N17 STX 1 vs. 4 Analysis

![](media/image11.png){width="8.25in" height="6.491666666666666in"}

Illustration 11: N17 ADACS Analysis

(stable and nominal)

# N17 MEMORY SCRUB REPORT

# Last week and Cumulative

![](media/image12.png){width="7.313194444444444in"
height="1.7305555555555556in"}

![](media/image13.wmf){width="7.465277777777778in"
height="5.764583333333333in"}

# POLAR SPACECRAFT TIP CLOCK ERROR

## WEEK ENDING March 25, 2005

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

  FRI. 03/18   -182 msec   +146 msec   -116 msec   +061 msec   +018 msec

  SAT. 03/19   -181 msec   +155 msec   -117 msec   +060 msec   +016 msec

  SUN. 03/20   -184 msec   +155 msec   -117 msec   +061 msec   +019 msec

  MON. 03/21   -184 msec   +155 msec   -119 msec   +060 msec   +019 msec

  TUE. 03/22   -184 msec   +150 msec   -120 msec   +061 msec   +018 msec

  WED. 03/23   -183 msec   +153 msec   -122 msec   +065 msec   +021 msec

  THU. 03/24   -185 msec   +152 msec   -124 msec   +065 msec   +020 msec
  ------------ ----------- ----------- ----------- ----------- -----------

EMOSS POC for this chart is JIM SHEPHERD

NOAA-12 \*Alternating +/- 500 millisecond clock jumps will occur at
76-day intervals as long as fractional second daily ETCUP is utilized to
manage clock drift. Next +500 mS jump is expected on 1/30/05.

> Daily ETCUP bias of +6.5 mSec started on 12/10/03.

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

Subtracted 150 mSecs on 30 June

NOAA-15: As of 04/23/03 the TIP clock is corrected daily by --8 msec to
compensate for drift.

Added 100 msec to spacecraft command clock on 31 Aug 04

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

Subtracted 100 msec from spacecraft command clock on 31 Aug 04.

NOAA-17: As of 12/23/03 the TIP clock is corrected daily by --3 msec to
compensate for drift.

Added 125 Msecs3 Feb 04.

POES Engineering Contact List

[Government]{.underline}

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

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

Micky 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

Angelique Riley, EMOSS, POES Comm and DHS (outgoing) 301-817-4028

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 (in training) 301-817-4026

William Chadwick EMOSS, POES Comm and DHS (in training) 301-817-4015

![](media/image14.png){width="7.615972222222222in" height="8.375in"}

POES Eclipse Analysis for 8 April 2005 depicts the east to west movement
of the solar eclipse across the earth surface.  The poles are not
effected by this years biannual solar event leaving all but N15 YAW
updates values completely clear,  reducing the number of times POES
spacecraft experience this event, and allowing all spacecraft to orbit
through the solar event without losing 100% sun (maximum loss 70% by
N15).   

![](media/image15.png){width="8.0in" height="5.928472222222222in"}

N12 Sun-Moon Eclipse Analysis for 8 Apr 05 (grey box indicates the
values at which the BYRILLUM telemetry mnemonic indicates darkness.)

Effects and reconfiguration recommendations for N12 (none)

-Power balance: Eclipse effect negligible, no reconfigurations
recommended

-SADPOS Takeover: Not applicable on N12, no reconfigurations possible

-Autonomous YGC Mode: No yaw updates during any reduced sun period.

> No reconfigurations recommended

![](media/image16.png){width="7.875in" height="5.8in"}

N14 Sun-Moon Eclipse Analysis for 8 Apr 05 (grey box indicates the
values at which the BYRILLUM telemetry mnemonic indicates darkness.
Yellow box indicates the percent illumination values that would have to
be reached [during GEODAT predicted sunlight]{.underline} that could
cause an autonomous switch to YGC mode during a Yaw Update)

Effects and reconfiguration recommendations for N14 (none)

-Power balance: Eclipse effect negligible, no reconfigurations
recommended

-SADPOS Takeover: Not applicable on N14, no reconfigurations possible

-Autonomous YGC Mode: A yaw updates does occur at the very end of the
only sun

> blockage period that N14 will experience. However, the illumination
> value never approaches that which could threaten an autonomous switch
> to YGC mode.
>
> No reconfigurations recommended

![](media/image17.png){width="8.125in" height="5.870833333333334in"}

N15 Sun-Moon Eclipse Analysis for 8 Apr 05 (grey box indicates the
values at which the BYRILLUM telemetry mnemonic indicates darkness.

Effects and reconfiguration recommendations for N15 (none)

-Power balance: Eclipse effect negligible on this full sun spacecraft
despite the

> (comparatively) "prolonged" period in BRYILLUM darkness. No
> reconfigurations recommended

-SADPOS Takeover: Not applicable on N15, no reconfigurations possible
although the

> 7.5 minute "dark" period would be close to the 8 minute threshold for
> SADPOS takeover on N16 or N17. No reconfigurations possible

-Autonomous YGC Mode: (see next page)

![](media/image18.png){width="7.875in" height="5.9125in"}

[N15 Yaw Update Analysis (cont, Zoom IN from previous page)]{.underline}

Grey box indicates the values at which the BYRILLUM telemetry mnemonic
indicates darkness. Yellow box indicates the percent illumination values
that would have to be reached [during GEODAT predicted
sunlight]{.underline} that could cause an autonomous switch to YGC mode
during a Yaw Update)

-Autonomous YGC Mode: (from previous page) A yaw updates does occur
during this

> eclipse event but the predicted degree of sunlight lost (45%, equating
> to 55% illuminated) does not approach the value that would threaten an
> autonomous switch to YGC mode (80% equating to 20% illuminated).
> Therefore, no reconfigurations are recommended.

![](media/image19.png){width="8.125in" height="5.972916666666666in"}

N16 Sun-Moon Eclipse Analysis for 8 Apr 05 (grey box indicates the
values at which the BYRILLUM telemetry mnemonic indicates darkness.

Effects and reconfiguration recommendations for N16 (none)

-Power balance: Eclipse effect negligible; expect full charge before
going back into

> Earth-sun eclipse, no reconfigurations recommended

-SADPOS Takeover: SADPOS is applicable on N16. However, the darkness
threshold

> is never breached during this event, let alone breached for the 8
> minutes that would result in SADPOS takeover. Therefore, no
> reconfigurations are recommended.

-Autonomous YGC Mode: No yaw updates will occur while the sun-

moon eclipse is occurring. No reconfigurations

recommended.

![](media/image20.png){width="8.0in" height="5.489583333333333in"}

N17 Sun-Moon Eclipse Analysis for 8 Apr 05 (grey box indicates the
values at which the BYRILLUM telemetry mnemonic indicates darkness.

Effects and reconfiguration recommendations for N17 (none)

-Power balance: Eclipse effect negligible; expect full charge before
going back into

> Earth-sun eclipse, no reconfigurations recommended.

-SADPOS Takeover: SADPOS is applicable on N17 and while the darkness
threshold

> [is]{.underline} breached during this event, it is for significantly
> less time (5 minutes, rounded high) than the 8 minutes required for
> SADPOS takeover. (This analysis uses the Flight Software specs value
> for the BRYILLUM flag to start the 8 minute timer vs. the less
> conservative P&CH. Therefore, no reconfigurations are recommended.

-Autonomous YGC Mode: No yaw updates will occur while the sun-

moon eclipse is occurring. No reconfigurations

recommended.