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| * Bolometer temperature | * Check the bolometer temperature |
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| * Fill the bolometer:[https://gra-lx1.iram.es/mainWiki/BolometerCooldownInstructions] | |
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| <!> Remember to remove the cable from the box when He3 is recycled manually | |
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| * Check the analog signals after the preamplifier while covering the entrance window with a metal plate. ('''During tests, and/or if strong spikes appear''') |
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]
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):
- 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
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)
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