Diff for "BoloChkList" - www.iram.es Main Wiki

Differences between revisions 4 and 22 (spanning 18 versions)

MAMBO2/ABBA2 Checklist

This document describe the checks and test that must be done before and during the Bolometer pool, as well as the frequency needed for these tests. (Maintained by GQ.)

The tests are divided into different groups, as they supposed to be carried by different groups of the IRAM staff (operators, AoDs, or Rxs)

OPERATOR CHECKLIST

Check the bolometer temperature
Check that the paddle motor works.
Fill the bolometer: https://gra-lx1.iram.es/mainWiki/BolometerCooldownInstructions

HOWTO:

Put the absorber: TBD

Remember to remove the cable from the box when He3 is recycled manually

AOD CHECKLIST

Teach the observers on the general aspects of the observation even the expert MAMBO observers (weekly):
- CookbookPako.
- When to switch to heterodyne
- What is a spiky scan
- Not to open a second monitor at flexible@mrt-lx3:monitor/
Do a backup of the DAFS (daily)
Observations on absorber ((AbsorberObs, at least once per week!)
- Do when the weather is too bad even for heterodyne observations.
- Do if the scans are too spiky
Check the cable connections of ABBA (weekly, or if ABBA does not react)

RXs CHECKLIST

Check the resistance
Check battery voltage
Check the Bias voltage
Check the blank/sync Signal at ABBA with an oscilloscope. (During tests, and/or if strong spikes appear)
Check the analog signals after the preamplifier while covering the entrance window with a metal plate. (During tests, and/or if strong spikes appear)

USEFUL DOCUMENTATION

ABBA short description: abba2_short_description.pdf
ABBA cable conections: TBA

PROBLEMS AND SOLUTIONS

This is a quick guide through normal problems that appeared in the past and the possible reasons and solutions.

PROBLEM	REASON	SOLUTION
Bololog is not updated	goPool has not been sent	Ask the operator to do so
Mopsic Monitor is not working	There is other monitor running and the DAFS files have been corrupted	Stop the second monitor and recreate the DAFS
ABBA does not start getting data	Wobbler is not wobbling	Ask the operator
ABBA does not start getting data	Wobbler works fine but the signal did not reach ABBA	Check the cable connections with ABBA
The skydip results are abnormally high	The paddle is put in from of the beam	Ask the operator to try it by hand or contact the Rx people

-  ⇤ ← Revision 4 as of 2009-07-08 16:07:59 → 
  Size: 900
  Editor: gra-lx17
  Comment:
+   ← Revision 22 as of 2009-07-15 08:21:10 → ⇥
  Size: 2614
  Editor: gra-lx17
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-This document describe the checks and test that '''must''' be done before and during the Bolometer pool, as well as the frequency needed for these tests.
+== MAMBO2/ABBA2 Checklist ==

This document describe the checks and test that '''must''' be done before and during the Bolometer pool, as well as the frequency needed for these tests. (Maintained by GQ.)
-Line 8:
+Line 10:
- * Bolometer temperature
+ * Check the bolometer temperature
 * Check that the paddle motor works.
 * Fill the bolometer: https://gra-lx1.iram.es/mainWiki/BolometerCooldownInstructions

'''HOWTO''': 
 * Put the absorber: TBD

<!> Remember to remove the cable from the box when He3 is recycled manually
-Line 12:
+Line 21:
- * Teach the observers on the general aspects of the observation '''even''' they are expert MAMBO observers:
+ * Teach the observers on the general aspects of the observation '''even''' the expert MAMBO observers ('''weekly'''):
-Line 18:
+Line 27:
- * Do absorber observations (AbsorberObs) when the weather is too bad even for heterodyne observations. 
 * Do absorber observations (AbsorberObs) if the scans are too spiky
+ * Do a backup of the DAFS ('''daily''')
 * Observations on absorber ((AbsorberObs, '''at least once per week!''')
   * Do when the weather is too bad even for heterodyne observations.
   * Do if the scans are too spiky

 * Check the cable connections of ABBA ('''weekly''', or if ABBA does not react)
-Line 24:
+Line 37:
- * Resistance
+ * Check the resistance
-Line 26:
+Line 39:
- *
+ * Check the Bias voltage 
 * Check the blank/sync Signal at ABBA with an oscilloscope. ('''During tests, and/or if strong spikes appear''')
 * Check the analog signals after the preamplifier while covering the entrance window with a metal plate. ('''During tests, and/or if strong spikes appear''')
----
=== USEFUL DOCUMENTATION ===

 * ABBA short description: [[attachment:abba2_short_description.pdf]]
 * ABBA cable conections: TBA

----

=== PROBLEMS AND SOLUTIONS ===

This is a quick guide through normal problems that appeared in the past and the possible reasons and solutions.

 ||'''PROBLEM'''||'''REASON'''||'''SOLUTION'''||
 ||Bololog is not updated|| goPool has not been sent|| Ask the operator to do so||
 ||Mopsic Monitor is not working || There is other monitor running and the DAFS files have been corrupted || Stop the second monitor and recreate the DAFS ||
 ||ABBA does not start getting data||Wobbler is not wobbling|| Ask the operator||
 ||ABBA does not start getting data||Wobbler works fine but the signal did not reach ABBA|| Check the cable connections with ABBA||
 ||The skydip results are abnormally high||The paddle is put in from of the beam||Ask the operator to try it by hand or contact the Rx people||