2270
Comment:
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2340
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Deletions are marked like this. | Additions are marked like this. |
Line 17: | Line 17: |
|| PACS_Spec_HK_Setup_OBS || Sets DPU HK List to SPEC BOTH || || || || PACS_Spec_Gra_Diaghk_SINCOS_Setup_OBS || Starts the grating specific Diaghk flow || || || |
|| PACS_Spec_HK_Setup_OBS || || Sets DPU HK List to SPEC BOTH || || || PACS_Spec_Gra_Diaghk_SINCOS_Setup_OBS || || Starts the grating specific Diaghk flow || || |
1. Conditions
All tests described can be executed from SAFE MODE of from SPECTROSCOPY. As these tests do not ensure that the grating remains configured with senseful controller parameters, it is safe to end them by sending the SAFE MODE OBCP
One should care that the DPU_HK_LIST command has been commanded to "SPEC - BOTH". This is performed by the PACS_Spec_HK_Setup_OBS.cus script.
Their analysis relies only on HK & diagnostic HK data.
2. PID
The following test loops over a serie of sets of grating PID parameters.
Script |
Parameters |
Comments |
Duration [sec] |
PACS_Spec_HK_Setup_OBS |
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Sets DPU HK List to SPEC BOTH |
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PACS_Spec_Gra_Diaghk_SINCOS_Setup_OBS |
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Starts the grating specific Diaghk flow |
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CONF_grating_OBS |
calUname="CONFGrat" calUrow=<default> |
Configures the grating with default parameters |
198 |
PACS_Spec_Gra_PID_loop_OBS |
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A reasonable grid of PID parameters must be hardcoded |
619 |
PACS_Diaghk_Reset_OBS |
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PACS_SAFE_MODE.tcl |
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3. Grating Behaviour Characterisation
Once a possibly acceptable set of PID parameters has been found, the grating behaviour should be characterised in all its aspects. This is the goal of the following tests.
3.1. Grating Healthcheck
This test homes the grating a number of times, on both sides of the grating range, and performs large amplitude movements in between. It allows to check for the grating range, the presence or absence of hard points in the path, the behaviour of the driving current throughout the range and it allows to establish the GRAT_CUR_POS vs HALL A & B characteristics.
3.2. Slew Time Cal
This is the main grating characterisation test. It performs series of grating movements of all amplitudes, all over the grating range
3.3. PID Check ("Tune PID")
This test performs a set of small amplitude movements every 5 degrees of the grating range.