20m Telescope - SIS 4-mm Receiver Monitoring
A black number indicates a normal value.A red number indicates a too high or a too low value.
A blue number indicates a value that has not been updated during the last 5 minutes.
A magenta number indicates a BAD value that has not been updated during the last 5 minutes.
You can click on any slot to get to a page showing graphs for that slot.
Daily log-files with the raw ASCII-data can be found here.
SLOT 2025-11-14 23:31:00 UTC
301 Commanded backshort position 797.85
302 Actual backshort position 799.32
303 Commanded tuning position 231.20
304 Actual tuning position 230.47
305 Commanded pol-A attenuator position 30.03
306 Actual pol-A attenuator position 30.03
307 Commanded pol-B attenuator position 30.03
308 Actual pol-B attenuator position 29.54
309 Gunn bias voltage 0.07 V
310 Gunn error voltage 0.92 V
311 Gunn AGC voltage 0.04 V
401 Gunn bias status off
402 Commanded Gunn phase lock loop open
403 Actual Gunn phase lock status yes
501 SIS cryo status OK yes
601 KOS switch mirror mode left
602 KOS left mirror position sky
603 KOS right mirror position sky
701 3-mm ambient load temperature 6.34 C
702 4-mm ambient load temperature 5.86 C
703 KOS switch motor temperature 20.74 C
Last modified: 14 November 2025
Responsible for this page: Mikael Lerner