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| * from DM_CHOP_CUR_POS the chopper offset (chop_offfset) will be determined | * determine chopper offset (chop_offset) from DM_CHOP_CUR_POS |
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| -> PosOffset=(-*1)*chop_offset * stop diag. HK witth '''SPEC_Chopper_dhk_stop_OBS''' |
-> PosOffset=(-1)*chop_offset * stop diag. HK with '''SPEC_Chopper_dhk_stop_OBS''' |
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| * switch-on Chopper * load up Chopper control parameters including the new offset |
* switch-on chopper * load up chopper control parameters including the new offset |
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| * enable chopper controller in order to upload new control parameter set |
H. Dannerbauer; 07-Dec-2006
Index TableOfContents(2)
1. Determination of Chopper Offset
- Chopper has to be switched-off and controller disabled
start PacketRecorder
start diag. HK with SPEC_Chopper_dhk_imt_OBS
- determine chopper offset (chop_offset) from DM_CHOP_CUR_POS
- include the new chopper offset in chopper control parameter set
-> PosOffset=(-1)*chop_offset
stop diag. HK with SPEC_Chopper_dhk_stop_OBS
close PacketRecorder
- switch-on chopper
- load up chopper control parameters including the new offset
-> tcl-script CONF_chopper_OBS.tcl with parameter name of CAL-U and control parameter set
- enable chopper controller in order to upload new control parameter set
2. Verify function of Ge:Ga detectors, CREs and detector heaters PTD 0.7.3 (TBD!)
for detailed test description see PTD_0.7.3 (->file attachment:vergega.pdf) or in CVS
- prerequisites:
- PACS in spectroscopic mode
- blue detector heater should be around 2.1 K
- short test description:
- procedures consists of two tests, one in loss-less compression mode to get raw ramps and one in default mode
start with test in loss-less compression mode; detector selection table with 14 randomly selected pixel DXS7602 in both channels; execute CUS script SPEC_detector_fmilt073_detsel_llc_OBS.cus (called by tcl-script Generic_CUS_OBS.tcl); script lasts 1659 seconds
do then test in default mode; therefore, execute CUS script SPEC_detector_fmilt073_standard_OBS.cus (called by tcl-script Generic_CUS_OBS.tcl); script lasts 134
3. Chopper Synchronization PTD 0.7.6 (TBD!)
3.1. Spectroscopic Mode (TBD!)
for detailed test description see PTD_0.7.6_spec (->file attachment:chopsynspec.pdf) or in CVS
- prerequisites:
- PACS in spectroscopic mode
setup Chopper Configuration Parameter for 8 degree; use from CAL-U table CONFChopper the column FM_sa2_81deg
- short test description:
- we use the SPU mode loss less compression
detector selection table with 14 randomly selected pixel DXS7602 in both channels
use CUS script SPEC_Chopper_fmilt076spec_detsel_llc_OBS.cus for conducting this test (called by tcl-script Generic_CUS_OBS.tcl); script lasts 865 seconds
3.2. Photometeric Mode (TBD!)
for detailed test description see PTD_0.7.6_phot (->file attachment:chopsynphot.pdf) or in CVS
- prerequisites:
- PACS in photometric mode
setup Chopper Configuration Parameter for 8 degree; use from CAL-U table CONFChopper the column FM_sa2_81deg; to do this do following:
if chopper controller enabled, disable chopper controller with CUS script XXX (called by tcl-script XXX with parameters XXX)
do chopper configuration with CUS script XXX (called by tcl-script XXX with parameters XXX)
enable chopper controller with CUS script XXX (called by tcl-scritp XXX with parameters XXX)
- short test description:
- we use the SPU mode loss less compression
detector selection table with 14 randomly selected pixel DXS7602 in both channels
use CUS script PHOT_Chopper_fmilt076phot_detsel_llc_OBS.cus for conducting this test (called by tcl-script Generic_CUS_OBS.tcl); script lasts 51 seconds