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= Check the amplitude of the Trapping Pit around the stop positions =

1. Move by 1, 2, ... maxkick degrees from each stop position

2. Repeat those "open loop" movements from + and from - 45 degrees from each stop position

== Photometer filter wheel ==

|| || Script || TCL || Parameters || Comments ||
|| 1 || PACS_Phot_HK_Setup_OBS || || || ||
|| 2 || PACS_Phot_Fil_Diaghk_Setup_OBS || || || ||
|| 3 || CONF_phot_fltw_param_OBS || Yes || rate,drive_current,threshold '''50''',4096,2000|| ||
|| 4 || PACS_Phot_Fil_nturns_OBS || Yes || nturns (3) || ||
|| 5 || PACS_Phot_Fil_Trapping_DEG_MODE_OBS || No || num_iter,maxkick || ||
|| 6 || PACS_Diaghk_Reset_OBS || || || ||
|| 7 || PACS_SAFE_MODE.tcl || || || ||

== Spectrometer filter wheel ==

|| || Script || TCL || Parameters || Comments ||
|| 1 || PACS_Spec_HK_Setup_OBS || || || ||
|| 2 || PACS_Spec_Fil_Diaghk_Setup_OBS || || || ||
|| 3 || CONF_spec_fltw_param_OBS || Yes || rate,drive_current,threshold '''50''',4096,2000|| ||
|| 4 || PACS_Spec_Fil_nturns_OBS || Yes || nturns (3) || ||
|| 5 || PACS_Spec_Fil_Trapping_DEG_MODE_OBS || No || num_iter,maxkick || ||
|| 6 || PACS_Diaghk_Reset_OBS || || || ||
|| 7 || PACS_SAFE_MODE.tcl || || || ||

1. Filter Wheel control loop procedures

2. Conditions

All tests described can be executed from SAFE MODE of from SPECTROSCOPY.

3. Threshold Tuning

3.1. Threshold parameter optimisation Photometer filter wheel

A loop over steps 3 & 4 can be implemented for a number of thresholds

Script

TCL

Parameters

Comments

1

PACS_Phot_HK_Setup_OBS

2

PACS_Phot_Fil_Diaghk_Setup_OBS

3

CONF_phot_fltw_param_OBS

Yes

rate,drive_current,threshold

4

PACS_Phot_Fil_nturns_OBS

Yes

nturns : number of full turns of the FW

5

PACS_Diaghk_Reset_OBS

6

PACS_SAFE_MODE.tcl

3.2. Threshold parameter optimisation Spectrometer filter wheel

A loop over steps 3 & 4 can be implemented for a number of thresholds

Script

TCL

Parameters

Comments

1

PACS_Spec_HK_Setup_OBS

2

PACS_Spec_Fil_Diaghk_Setup_OBS

3

CONF_spec_fltw_param_OBS

Yes

rate,drive_current,threshold

4

PACS_Spec_Fil_nturns_OBS

Yes

nturns : number of full turns of the FW

5

PACS_Diaghk_Reset_OBS

6

PACS_SAFE_MODE.tcl

4. Current loop

Loop over current from 10 to 100mA by steps of 10. For each setting, performs nturns *OPEN LOOP* movements of 360 degrees (default = 3). Open loop movement means that the wheel is driven for a given time, depending on the size of the movement and the rate. Consequently, the movement might finally not be of the expected size.

4.1. Photometer filter wheel

Script

TCL

Parameters

Comments

1

PACS_Phot_HK_Setup_OBS

2

PACS_Phot_Fil_Diaghk_Setup_OBS

3

CONF_phot_fltw_param_OBS

Yes

rate,drive_current,threshold

4

PACS_Phot_Fil_Current_Loop_OBS

No

nturns : #turns of the FW/current setting

5

PACS_Diaghk_Reset_OBS

6

PACS_SAFE_MODE.tcl

5. Tuning the rate

The following test aims at checking the feasability and behaviour stability of the FWs operated at higher rates (= higher speed). The baseline rate = 100, corresponding to an angular speed of 360 degrees in 18.75 seconds.

5.1. Photometer filter wheel

Script

TCL

Parameters

Comments

1

PACS_Phot_HK_Setup_OBS

2

PACS_Phot_Fil_Diaghk_Setup_OBS

3

CONF_phot_fltw_param_OBS

Yes

rate,drive_current,threshold

4

PACS_Phot_Fil_nturns_OBS

Yes

nturns : #turns of the FW

5

PACS_Diaghk_Reset_OBS

6

PACS_SAFE_MODE.tcl

6. Influence of disconnecting redundant connector

The following procedure may be applied w/ or w/o short circuit connector.

Script

TCL

Parameters

Comments

1

Disconnect redundant, place short-circuit connector

2

PACS_switch_on.tcl

Yes

3

PACS_Phot_HK_Setup_OBS

4

PACS_Phot_Fil_Diaghk_Setup_OBS

5

CONF_phot_fltw_param_OBS

Yes

rate 100,drive_current 4096,threshold 2000

6

PACS_Phot_Fil_nturns_OBS

Yes

nturns=6

437 sec

7

PACS_Phot_Fil_nturns_twodirections_OBS

Yes

num_repeats=2, num_turns=3, slew_time=15

981 sec

8

PACS_Phot_Fil_nturns_finepos_OBS

Yes

nturns=2

1484 sec

9

CONF_phot_fltw_param_OBS

Yes

rate=200,drive_current 4096,threshold 2000

10

PACS_Phot_Fil_nturns_twodirections_OBS

Yes

num_repeats=2, num_turns=3, slew_time=30

1716 sec

11

PACS_Diaghk_Reset_OBS

12

PACS_Spec_HK_Setup_OBS

13

PACS_Spec_Fil_Diaghk_Setup_OBS

14

CONF_spec_fltw_param_OBS

Yes

rate 100,drive_current 4096,threshold 2000

15

PACS_Spec_Fil_nturns_OBS

Yes

nturns=6

437 sec

16

PACS_Spec_Fil_nturns_twodirections_OBS

Yes

num_repeats=2, num_turns=3, slew_time=15

918 sec

17

PACS_Spec_Fil_nturns_finepos_OBS

Yes

nturns=2

1484 sec

18

CONF_Spec_fltw_param_OBS

Yes

rate=200,drive_current 4096,threshold 2000

19

PACS_Spec_Fil_nturns_twodirections_OBS

Yes

num_repeats=2, num_turns=3, slew_time=30

1716 sec

20

PACS_Diaghk_Reset_OBS

21

PACS_switch_off.tcl

7. Check the amplitude of the Trapping Pit around the stop positions

1. Move by 1, 2, ... maxkick degrees from each stop position

2. Repeat those "open loop" movements from + and from - 45 degrees from each stop position

7.1. Photometer filter wheel

Script

TCL

Parameters

Comments

1

PACS_Phot_HK_Setup_OBS

2

PACS_Phot_Fil_Diaghk_Setup_OBS

3

CONF_phot_fltw_param_OBS

Yes

rate,drive_current,threshold 50,4096,2000

4

PACS_Phot_Fil_nturns_OBS

Yes

nturns (3)

5

PACS_Phot_Fil_Trapping_DEG_MODE_OBS

No

num_iter,maxkick

6

PACS_Diaghk_Reset_OBS

7

PACS_SAFE_MODE.tcl

7.2. Spectrometer filter wheel

Script

TCL

Parameters

Comments

1

PACS_Spec_HK_Setup_OBS

2

PACS_Spec_Fil_Diaghk_Setup_OBS

3

CONF_spec_fltw_param_OBS

Yes

rate,drive_current,threshold 50,4096,2000

4

PACS_Spec_Fil_nturns_OBS

Yes

nturns (3)

5

PACS_Spec_Fil_Trapping_DEG_MODE_OBS

No

num_iter,maxkick

6

PACS_Diaghk_Reset_OBS

7

PACS_SAFE_MODE.tcl

Herschel: FmIltProc/FwControlloop (last edited 2009-07-15 14:32:36 by localhost)