TGBT14A_912_75 - continued bank discrepancy tests

Goals

• Continue bank comparison tests

Details

• Ray switches to latest version of Manager
• roaches E and H are still swapped.
• bank_gain_mode4_kfpa in tp_nocal mode
• balance
• archivist
• for some reason which I don't understand, we seem to have much less IF power than before? Set IF target to 7 in balance. Doesn't work
• Manually set IF rack atten to 2dB for rcvr Array 18 - 26 J6.
• lbw_gain was 163321889, = 2**27.3
• Use SetValues to set it to 2**27 = 134217728
• checkLinearityDB(0,31,2)
• both polarizations look good this time. Can use all data.
• Scan 1 aborts due to Antenna being in Scan Coordinator
• Scans 2 - 17
• Repeat with switch mode tp
• Scans 18-33
• Run separate 60 sec scans with Cal Off, Cal On
• Scan 34 - track with Cal off.
• Scan 35 - Cal On
• Scan 36 - Cal Off
• Scan 37 - Cal On
• Scan 38 - Cal Off

• Hand over to Ray for snapblock testing at 10:00am.

• Galen was putting some absorber over the feed while this was going on, so may have screwed up our tests (We are using B1)....

• Get Jason and Ray to swap the Roaches back, but still BOF 123...

• Run the Cal on / Cal Off scans with Roaches in normal configuration. Now have absorber over the feed.

• config, balance, set values, etc.
• Scan 39 - off
• Scan 40 - on. Don't see the cal. Maybe system temperature is now way too high?
• Try a "tp" scan - 41. GBTIDL can calibrate it, so try the separate scans. Tsys = 370K this actually might be a useful test.
• Scan 42 - off
• Scan 43,44,45,46 - on, off, on, off

• Switch back to normal mode...
• scan 47 - running Bank E from Ray's machine
• scan 48 - running normally - filler is not running; restart
• scan 49. looks fine.
• 12:40pm. finito