1. UVIS TEAM MEETING OPERATIONS UPDATE
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

2. UVIS TEAM MEETING OPERATIONS UPDATE
Instrument Status
On/Off Cycle: 28.
+1 since last meeting.
S/C safing on 11/1/2010 in S64
Hours On: ~90,500 hours.
Longest continuous operations: 9/11/2007 – 11/1/2010.
HDAC Filament Modulation:
Filament 1: hours (H cell), (D cell).
Filament 2: hours.
Last: In S63 during T72 (H cell only).
Lost: In S64 during T73 (did not execute).
Next: In S67 during T75 (H cell and D cell).
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

3. Significant Data Issues
None
S62
UVIS_136SW_IPHSURVEY004
UVIS_137OT_OUTERSAT003
Data loss: Station problem
Data loss
S63
UVIS_138TI_LMBINT001_CIRS
UVIS_138SW_IPHSURVEY016
Wrong target: target was Saturn
Total Loss
S64
UVIS_139IC_ALPVIR001
UVIS_139SW_IPHSURVEY006
UVIS_139SA_AURSLEW001
All data from to *
Data loss: Rain
Data Loss: Lighting strike
Total loss: S/C safing
S65
UVIS_141SW_IPHSURVEY013
UVIS_141SW_IPHSURVEY010
UVIS_141SW_IPHSURVEY011
UVIS_142SW_IPHSURVEY002
UVIS_142SA_MOS142APO002
Total loss: Station problem
Data loss: Rain & station pb
* Includes: UVIS_140SA_MOS140APO001 & 002, UVIS_141IC_ALPVIR001
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

4. UVIS TEAM MEETING OPERATIONS UPDATE
First Time Events
New SSR allocation for IEB (starting S65).
Use of “cyclic” to send commands to UVIS during system scan:
Starting S65 (should have been S64 but…).
Save command memory space on-board the S/C:
UVIS_142SA_MOS142APO001_PRIME with cyclic: 5 commands.
UVIS_142SA_MOS142APO001_PRIME without cyclic:545 commands.
UVIS_142SA_MOS142APO001: timing looks Ok.
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

5. UVIS TEAM MEETING OPERATIONS UPDATE
Note on System Scan
Need to increase the SSR allocation by 0.6% from what is given by the spreadsheet:
The spreadsheet assumes un-interrupted data acquisition.
In the system scan there is one integration per mosaic stop… The last packet of each integration is not fully filled… The spreadsheet does not take that into account.
In UVIS_142SA_MOS142APO001 expected 545 integrations. Got 542+.
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

6. UVIS TEAM MEETING OPERATIONS UPDATE
Note on System Scan
Un-interrupted data acquisition
Packet 1
Packet 2
Packet n
Packet n+1
Packet n+2
Integration 1
Integration 2
Interrupted data acquisition
Packet 1
Packet 2
Packet n
Packet n+1
Packet n+2
Integration 1
Integration 2
Unused
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

7. UVIS TEAM MEETING OPERATIONS UPDATE
Rbot: Workload Impact
The impact of Rbot on the ops team workload is highly variable:
S64: 1 out of 6 designs
S65: 3 out of 10 designs
S66: 1 out of 10 designs
S67: 0 out of 15 designs
S68: Don’t know yet.
The up-front job done by SP and the lowering of the keep-out values (to +/- 300 rpm starting S67) help a lot.
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

8. UVIS TEAM MEETING OPERATIONS UPDATE
Major Local Issues
Uplink side: None
Downlink side:
Beginning of S65: problem ingesting data with the correct CIMS labels due to a clock kernel switch in FSIV.
Consequence of the S64 safing
In S65: problem processing large files generated by long (32 hours) system scans.
We have a workaround
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

9. XM Data Utilization Summary S42 – S61
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

10. XM Data Utilization Summary S62
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

11. XM Data Utilization Summary S63
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE

12. UVIS TEAM MEETING OPERATIONS UPDATE
Notes and Reminders
Use UVIS_SOLAR_OFF to Sun in CIMS for all solar occultation instead of ISS_NAC to Sun (-20.0, 0.0, deg) offset.
HDAC modulation is a non-standard power mode.
Before requesting sponge bits let us know what you want as we may have a good understanding of instrument SSR loading.
The list of ring occultations that contain an atmospheric occultation is on the team web site at
The list of all the tour calibrations is on the team web site at
The UVIS PEFs are on the team web site at
01/04/11
UVIS TEAM MEETING OPERATIONS UPDATE