Note: In case of a power outage, you cannot assume that anything is safe! Use the pre-observation checklist.
Below is an explanation of the current list of items to check during an observation:
onsourceand check the antenna is tracking, which it should be provided a new source command hasn't recently been issued.
maserdelay. These values should be within 0.5 microsecond of each other and stable (i.e. similar results if you issue the commands again). The monitoring software will calculate the difference for you and should ring an alarm if the difference is not acceptable. See this entry in the common Problems section for a remedy.
mk5=mode?. The result should be, ( where the last number represents the number of disk modules loaded, either 1 or 2 ),
/mk5/!mode? 0 : ext : 0xffffffff : 2 : 2 ;for 2nd and 4th R1/R4 experiments each month,
/mk5/!mode? 0 : ext : 0x55555555 : 2 : 2 ;for R1 and R4 experiments,
/mk5/!mode? 0 : ext : 0x55555555 : 4 : 2 ;for OHIG, APSG, T2 (Arwin) and CRF observations
/mk5/!mode? 0 : ext : 0xffffffff: 1 : 2 ;for AUA, AOV and AUG experiments (Arwin).
/mk5/!mode? 0 : ext : 0xffffffff : 1 : 1 ;for AUST experiments.
mk5=dot?. Make sure it reports a small offset (~<10ms) as the final value, that
FHG_offdepending on whether it is currently recording or not.
disk_posin eRemoteControl should report three values - the current number of btyes recorded, bytes at start of previous scan and bytes at start of current scan. If not currently recording, the first and third values should agree. It is normal for Yarragadee
disk_posto lag its expected value due to regular stows for USN uplinks. The Log Monitor also reports disk usage. Compare amount of bites recorded with that listed in the summary file (e.g. r4000hb.sum). Snap-file summary is located in /vlbobs/ivs/sched/, and according to current practice, should be open in the favourite text editor on the screen (for all monitored antennas) (don't forget to ssh to ops2 if you're not already there). Feel free to edit and add your comments.
wthcommand, which will look like this:\\/#wx#/16.1,1007.9,58.6