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Table of Contents
Operations
Schedules
Operations Meetings
Data Handling and Disk Logistics
Transfers
Please use the Transfers Page for information on data transfer.
Modules
See the Modules Page
AuScope IVS Module Allocation
Telescope calibration/monitoring procedures and notes
Stairwell Displays
AuScope Operations Log
Please enter any significant events related to the AuScope VLBI project, including observations, configuration changes, hardware upgrades etc.
log monitor now checks for FS activity
The PCFS Log monitor now checks the Field System log to see when the last entry was. If it's more than 15 mins ago it will ring a beep every 2 seconds as this is a possible sign that the Field System software has dies or that the network has dropped out.
Also removed the check to see if time had gone backwards. This check was buggy and doesn't seem to actually trap a real problem.
Stuck bits at Ke
MK5-2ke shows a stuck bit in channel 15. First noticed 22 May and may have been persistent throughout CONT14. Autocorrelations show this in 1-bit data but not 2-bit.
Removing connector at mk5 end, cleaning and re-seating didn't fix the problem. Continuing to investigate..
C1405 notes
Note to observers Can anyone doing an expt changeover PLEASE record the disk pos at expt start on the paper schedule, so that we can properly and easily check disk usage? -Claire
Ke:
- Telescope system died after experiment changeover and before first scan, no data from scan 130-0001c to 130-0203 while all systems rebooted (Mark). -Claire
- As usual, maser AHM ~/= power is blue, value 23.8. -Claire
- Time delays have returned to normal - Imogen
Mark 5 Crash at Katherine
At ~17:40UT (03:40am local), the Mark 5 at Katherine crashed.
Could not restart remotely as the power failed, all lights were off. Martin went to the telescope and had to reboot the Mark5 several times (as in pull the plug) before it would completely restart and begin working again. Had to fmset as everything was then out of sync.
Mark5 began recording again at 18:58UT (04:58am local).
Missed scans from 130-1737 through to 130-1854a (possibly one or two either side), have noted this in the Checklist. - Imogen
Ho:
- Can view time series of 70k stage (etc) for current expt by on “hobart” machine, command “logpl”, load file “c1405ho.log”, and “plotting” last option in first list is 70k. Handy to monitor. -Claire via Brett
- When preparing End Message, check log for “switching”, ie 'switching drives on', indicating the slew never completed, you can work out which scans were missed (triggered by midob). -Claire via Brett
Katherine Maintenance Trip (April 12-17)
- DBBC Service - Replaced PCI7200 card, swapped CoMos B & C, reseated stack, connected longer VSI cable to mk5-2ke. No further problems with errorenous readback of power levels, but seem to be suffering a new poblem with clock breaks in the mark5 units. Will revisit earthing of the mark5 units to attempt to correct this problem.
- mk5-2ke - Upgraded firmware and software to v3.0.2. Connected to VSI output of DBBC. All working, but still needs an additional counter to fully support its use in recording.
- Monica - Rxmon & IFBox code updated to read the temperature & Humidity sensors in control room, maser room, pedestal and hub and the maser battery voltage. Feed temp & RH sensor was damaged in installation but monitor points have been created for when it is available.
- UPSMon - A new PC has been installed which monitors the UPS state via NUT, and can send SMSs via an attached mobile phone. This should give warning of any significant power outages.
- Phase CAL - The rapid phase wrapping noted by Brian Corey (Dec 2013) appears to be caused by the 5 MHz filter put in place last year. Removing it reduced the phase rate from 360 degree drifts in ~30 min at S-band (~5 min at X-band), to ~30 degrees over 3 hours at S-band (~120-150 degrees over 3.5 hours at X-band). No delay-like differential variations noted in the pcal phases after removing the filter.
- Tsys - SLCP LNA appears to be worse than nominal. Adjusted flange connections of S-band feed while monitoring Tsys under load and have got an apparent improvement in SRCP Tsys (~100-110 K instead of ~130 K). New CAL factors have been measured for the cont CAL per band.
- pcfske - Discovered that disk 2 of the RAID had failed and that the spare was not in use. Removed disk 2 from the RAID array and set the RAID rebuilding with sda & sdc.
- webcamke - Removed webcamke from housing, left housing on pole to avoid a fight with the wasps. A new housing and camera installed further down the pole, replacing webcamke.
