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operations:down_under_2015_08_11_minutes [2015/08/12 00:48] (current)
Ed Himwich created
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 +
 +0. Rich & Brett:
 +
 +  - Ho receiver on-axis comment is confirmation of correct positioning
 +
 +>  1. Issues from Ww
 +
 +  - Real time etransfer to Bonn partially successful, Harro explained that there was a port conflict, try again next week
 +  - New power switch on gpib, not RS-232 yet
 +
 +>  2. Issues from AuScope
 +
 +  - Still working on Broadband receiver on 12m
 +
 +> Review of reported station issues:
 +
 +>  3. Ww has new internet power switch to cylce GPIB when it fails
 +>     will replace GPIB controller with RS-232 connection
 +
 +  - See above
 +
 +>  4. Yg r4696
 +>     VNC connection lost for several hours, no monitor
 +>         (what about eRemoteControl?​)
 +
 +  - Report was VPN down (not VNC, but that was too), everything continued as normal at the site
 +  - Ww also has a VPN with VNC over it
 +
 +>  5. Yg r1699
 +>     ​Monica restarted twice due to ifpic problems, not fixed?
 +
 +  - operator talked to Jim about it, should have just restarted ifpic server
 +  - ifpic server needs to be updated
 +
 +>  6. Yg says "​wth"​ not found, fixed? (& in all sy= commands?)
 +
 +  - Jamie fixed, there was an error with ampersand put in by mistake
 +  - all sy commands updated with ampersand
 +
 +>  7. Ke r1699
 +>     S1-S4 high Tsys most of the time (120-170k)
 +
 +  - example of operator report of high Tsys
 +  - RFI issue? yes, persistent and reported unevenly, but not too bad
 +  - DBBC problem? Tsys is high, but cal diode val might also be high
 +  - Ww core board replacement dropped SEFDs from 8000 to 4000 
 +    - AuScope 3500 SEFDs so core boards probably okay there
 + 
 +>  8. Ho
 +>     RFI, overflows in S5, S6 most of the time
 +
 +  - Radiolinks for wireless systems, also gets Hb
 +    - Consider new frequencies
 +
 +> Issues left over from last time:
 +
 +>  9. 0.7 nanosecond clock jumps causing significant data loss during
 +>     ​analysis
 +
 +  - Yg and Hb (and Ho): timing system or Maser PPS or PPS delay in DBBC
 +  - Rick ask analysts for times of jumps (we also percentage of loss)
 +  - NR maser still at Hb/Ho, but just used for frequency comparison
 +
 +> 10. wind-stow progress, next test
 +
 +  - next week firm up time for Wed/Thurs
 +  - apparent 'man in the middle attack'​ for pcfshb due to back-up
 +
 +> 11. Brian agreed there is no need to move pcal to 26m
 +
 +  - Okay
 +
 +> 12. NTP configuration,​ need more servers, especially remote and
 +>     ​non-TAC/​CNS
 +
 +  - Ed contacted Hambly, plans to fix CNS clock firmware to include leap second approaching flag
 +  - NTP configurations need more servers, especially remote (6 or more) and not CNS clocks, but more local of any type is better too
 +    - Jim said okay to increasing server
 +
 +> 13. "popen uptime"​ was added to all three AuScope 12m systems
 +
 +  - Installed, waiting for a case where a machine is slowed down to be useful
 +
 +> 14. Ed and Stuart to review status registers
 +
 +  - Stuart will send documentation on Ww status registers for Ed to compare with other 12m antennas
 +
 +> 15. Thanks for IPS/​KVM/​auto-login information
 +
 +  - Thanks.
 +  - Can require a large load on UPS supplying IPS, but has two inputs
 +  - Brett/​Stuart:​ Wireless switch can switch device from phone
 +    - "​Pebble"​ unit, "​Wemo"​ by Belkin ​
 +    - Telnet very handy, web interface can bog down
 +    - need more webcams for looking at equipment
 +
 +> 16. Ho antcn reliability issues?
 +
 +  - working on updating the antenna controller
 +
 +> 17. Any luck getting spare VC parts? switch to DBBC at Ho?
 +
 +  - Need some oscillator parts from Mike
 +    - now know what parts to ask for
 +  - DBBC has two CoMo/four AD2s so not quite compatible with IFs
 +    - will DBBC 105F support more than eight BBCs? Gino will know
 +
  
/home/www/auscope/opswiki/data/pages/operations/down_under_2015_08_11_minutes.txt · Last modified: 2015/08/12 00:48 by Ed Himwich