Index TableOfContents(2)

PACS bolometer operation from the commanding point of view


T. Mueller, D. Cesarsky; 08-Nov-2006


1. Short functional tests


1.1. SFT Warm: Sorption Cooler and Bolometer detector chain

Note: No specific autonomy functions are involved here (except AF#6 to check for the communication between DMC and BOLC)

1.2. SFT at HeI: Sorption Cooler and Bolometer detector chain

Note: No specific autonomy functions are involved here (except AF#6 to check for the communication between DMC and BOLC)

1.3. SFT at HeII (cooler not recycled): Sorption Cooler and Bolometer detector chain

Note: No specific autonomy functions are involved here (except AF#6 to check for the communication between DMC and BOLC)


2. Nominal operations


2.1. Instrument switch-on and connection of the warm electronic boxes

Note: Autonomy function #6 is enabled to check for the communication between DMC and BOLC

2.2. Cooler recycling (only at HeII temperatures)

Note: At the end of the recycling the autonomy function 14 is enabled. It checks for TEMP_EV, TEMP_FPU1, TEMP_FPU2: --> HK DEC SOFT is generated if one or more are out of the range [260,320] mK; --> GO SAFE is generated if one or more are above 400 mK

2.3. General Setup for Photometer Operation (after cooler recycling)

* calibration sources are set to default values, but need 40-50 min stabilisation time!!!BR

Note: At the end of the PHOT_setup the autonomy function 17 "generate_event_pwr" is enabled. It checks for the HK entries: PC_PWR_ANA_P_#, PC_PWR_ANA_N_# and PC_PWR_DIG_#, with # = [1,2,3,4,5,6,7]

2.4. Operation of the bolometers (starting out of PHOTOMETRY mode)

2.4.1. start/stop of bolometer data flow

2.4.2. Change of the bolometer data/sequence mode and gain

2.4.3. Take data with manual chopper & filter movements

2.4.4. Take data with pre-defined OBCPs

Note: all OBCPs can be started with default parameters via the generic tcl-script; the key-OBCPs can also be started with freely selectable parameters via specific tcl-scripts

2.4.5. Execute AOT observations

Note: the default OBCP for point-source photometry will probably be the OBCP_fixed_fixed_photo.

2.5. Reset after photometer operation

2.6. Instrument switch-off


3. NOTES