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Handover notes
Please use this page to write up any notes on anything that needs to be passed on to the next observer or should go into the end of experiment message.
Notes should be placed below the horizontal line as a new blog entry.
Continuing problems should be copied to the Current Issues page.
**Template for Handover notes:**
Be sure to add any specific notes about the experiment if required, for example “Special back end configuration for x reason”. Put as much detail as you can - the more the better.
====== Experiment Name ====== **Hobart 12m** Disk VSN: abc-123 | Data volume at beginning: 2.34 GB * 1300UT a comment from me (user) **Katherine 12m** Disk VSN: | Data volume at beginning: GB * **Yarragadee 12m** Disk VSN: | Data volume at beginning: GB * 1300UT Experiment started okay (JMc).
Format for entering a comment It is important to stick to this formula - there is a good reason we need this information, so please include it!
Time stamp in UT * Comment * (Your Name)
For Example:
20:00UT: Wind stows, Missed scans 012-3456 to 012-3457 (Jim)
20:50UT: Mark5 lost connection, had to restart Mark5 and reconfigure DBBC, called Jamie on call to fix, missed scans 012-3456 to 012-4567 (Jim)
Again - as much detail as you can. It is important to remember that these notes will be sent to the correlator, so please make sure they make sense to others.
R1651
Hb:
- Recording on BKG-0049, +0 GB.
Ke:
- Recording on USN-0191, +0 GB.
- Tsys high in bands 09, 11 and 12 as per usual.
Yg:
- Recording on UAO-0026, +0 GB.
- Tsys high in band 12.
aust46
Hb:
- Recording to HOB+0035. +3 GB
- Usual RFI from the NBN in last two channels
Ke:
- Recording to HOB+0122. +20792 GB
- RFI ongoing in S band.
Yg:
- Recording to HOB+0120. +22656 GB
- Antenna was stuck for about an hour before the experiment. Onsite staff managed to return control about 15 min into exp. First source was 244-0716b.
Ho:
- Recording to USN-0027. +3 GB
- Receiver is warm, so tsys higher than usual.
- Status monitor clock shows wrong datetime. However, log time agrees with monit2 agrees with UT. So will clarify inconsistency at a later time.
AUST45
- Hb: module HOB+1104, module 3417 GB ahead
- apparernt persistent RFI issues:
- 1) Channels 14, 15 (last S) have peaks
- 2) Narrow-band S-band channels have Tsys>100K
- Ke: module HOB+0122, module 14280 GB ahead
- apparernt persistent RFI issues:
- 1) Channel 11 and sometimes 12 (S) autocorrelation bandpass show peaks; ch 15 (last S) shows slope
- 2) narrow-band S-band channels 9,10,12 have high Tsys>110K
- Yg: module HOB+0120, module 16055 GB ahead
- apparent RFI issues:
- 1)Channel 15 (last S) autocorrelation bandpass shows peak-slope configuration
- 2) narrow-band S band, esp. ch. 9,12,13,14 have hight Tsys>110K
AUST44
Logs and EndMess sent (Lucia) All experiments started OK.
- Hb module: HOB+0119 (~10.66 TB ahead), changed to HOB+0104 part way through as didn't have enough space.
- Ke module: HOB+0122 (~7.82 TB ahead)
- Yg module: HOB+0120 (~9.54 TB ahead)
- Hb
- Module only has ~5 TB of space, does this need to be changed?
- Missed most scans in 242-0754 to 242-0943 due to mk5 issues loading up another module
- Ke
- There are some communications issues with eControl - use Dave's “backup control”.
- Yg
- There are some communications issues with eControl- use Dave's “backup control”.
R4650
hb:
recording to HOB+0119 start at 8692 GB.
ke:
- recording to BKG+0126 start 0 GB. Test record OK.
- After start channels 11, 12 looked suspect in autocorrelation.
- clock jumped at 19:00. halted schedule and reconfigured dbbc at 19:03. fs crashed also.
- one missed scan 240-1902a. next good scan 240-1916. (missed scan record stop means -20 GB approx.)
- clock delay drifted from -0.29 us to -0.4 us around 240/20:30 and has stabilised see ke_ddiff.txt plot
- missed scans 240-2312 and 240-2328 due to dbbc reconfig.
- clock delay stable since 240-2330 (as of 240-0315)
At UT13:40 day 241, the delay difference at Katherine started to drift quite badly, had to run fmset at 13.53UT (Imogen)
For some reason, gnuplot will not plot values of ke_ddif.txt past ~11:00UT - not sure why (Imogen).
At 14:29UT, restarted DBBC as clock drift was still occurring, ran fmset to resync dbbc and mark5. Delay seems to be stable as of 14:42UT, however cannot plot the values as they do not seem to be reaching the ke_ddif.txt file.
yg:
- recording to USN-0019 start 0 GB
- spurious wind stow 240/21:22, antenna will not release elevation brake. Sending Jack from moblas to try handbox antenna alive
- also note anemometer cant connect to device
- schedule halted 240/21:36
- drives still inoperable at 240/23:59
- restarted for scan 241-0447
aust43
DISKS:
hb HOB+0119
ke HOB+0122
yg HOB+0120
Ke
1000 UTC: Int. T. reading red at 55 C. The internal temperature of the maser unit has risen to warning levels. Monica shows that the maser room temperature has risen since about 0 UTC on 27/8 reaching a peak at 0800 UTC and is now falling again. Brett informed. Martin to investigate in the morning (~2000 UTC).
1200 UTC: Int. T. now at 48 C and warning light off in maser monitor.
1300 UTC: Delay difference has been drifted since start of experiment. This seems to be coming from the formatter.
1315 UTC: Drift rate increased. Rebooting and formatting the DBBC.
2208 UTC: fmout seems to have been stable since UT18:00
1330 UTC: Resumed after reboot. Monitoring offsets.
1750 UTC: Delay difference drifting again. Trying another reconf.
2209 UTC: fmout seems to have been stable since UT18:00
0115 UTC: Large difference between formatter and GPS. Halted schedule to run fmset. This did not fix the problem. Jamie restarted the DBBC and reconfigured Schedule starting again at UT02:14.
0702 UTC: Formatter to GPS has remained stabled till the end of observations.
