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operations:documentation.ivs.mark5_v2
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operations:documentation.ivs.mark5_v2 [2012/08/15 04:32] Jim Lovell |
operations:documentation.ivs.mark5_v2 [2016/08/02 11:33] (current) Ellen Manning [Check the Mark5 system clock] |
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| Line 9: | Line 9: | ||
| First check if the dimino program is running: | First check if the dimino program is running: | ||
| - | <code>ps -ef | grep dim</code> | + | <code>ps -ef | grep -i dim</code> |
| - | If it is, we want to re-start it so that output is logged to the correct place. Stop it with the command | + | If it is (you should see ''DIMino -m0'' in the output from the above), we want to re-start it so that output is logged to the correct place. Stop it with this command: |
| - | <code>Enddim</code> | + | <code>EndDIM</code> |
| Then start it and give the experiment code and station ID as the argument. E.g. for r1456 at Yarragadee: | Then start it and give the experiment code and station ID as the argument. E.g. for r1456 at Yarragadee: | ||
| <code>cd ~ | <code>cd ~ | ||
| Line 21: | Line 21: | ||
| 201222802:40:54 dimino Ready. End with Enddim, please | 201222802:40:54 dimino Ready. End with Enddim, please | ||
| </code> | </code> | ||
| - | |||
| ===== Check the Mark5 system clock ===== | ===== Check the Mark5 system clock ===== | ||
| - | The Mark5 gets it's system time from a local GPS receiver which runs an NTP server. You can check if it is synchronised with the command | + | The Mark5 gets it's system time from a local GPS receiver which runs an NTP server. You can check if it is synchronised with the command as oper@mk5(station name) on the vnc viewer: |
| <code>ntpq -np</code> | <code>ntpq -np</code> | ||
| Look for an offset (reported in milli-sec) from the the first server listed of about 10 ms or less ((detail on ntpq output can be found here: | Look for an offset (reported in milli-sec) from the the first server listed of about 10 ms or less ((detail on ntpq output can be found here: | ||
| - | [[http://tech.kulish.com/2007/10/30/ntp-ntpq-output-explained/|NTP output explained]])). If there is a large offset, the Mark5 system clock may need resetting. Contact the on-call person for assistance. | + | [[http://tech.kulish.com/2007/10/30/ntp-ntpq-output-explained/|NTP output explained]])). If there is a large offset, the Mark5 system clock may need resetting. Contact the on-call person for assistance. Edit: You can try checking the ''mk5=dot?'', if it is ''syncerr_gt_3'' or ''not_synced'', sync the ''fmset'' on the pcfs computer. This usually solves the problem of a large offset. More information can be found here [[http://auscope.phys.utas.edu.au/opswiki/doku.php?id=operations:documentation.ivs#dbbc_configuration]]. (Can someone confirm this and delete the annonations-Arwin) |
| ===== Synchronising the Mark5 Clock ===== | ===== Synchronising the Mark5 Clock ===== | ||
| The following steps are done through e-remote Control or the Field System. | The following steps are done through e-remote Control or the Field System. | ||
| + | ==== 1. Set the recording mode ==== | ||
| First set up the Mark5 recording mode. Use the experiment procedure file: | First set up the Mark5 recording mode. Use the experiment procedure file: | ||
| <code>proc=<experiment_name><station_ID></code> | <code>proc=<experiment_name><station_ID></code> | ||
| Line 41: | Line 40: | ||
| then type | then type | ||
| <code>ready_disk</code> | <code>ready_disk</code> | ||
| - | Then one of the following depending on the experiment type. | + | |
| - | * For R1, R4, RD, RDV, T2, ANZ, CRDS, CRF, OHIG:<code>setupsx</code> | + | ==== 2. VSN Check ==== |
| - | * For AUST, CONT:<code>setup8f</code> | + | It's important that the modules have valid VSN codes. Please follow this procedure to |
| + | [[operations.VSN_Check|check that the VSN reported in the log agrees with the physical VSN label]]. | ||
| + | |||
| + | ==== 3. Configure the Mark5 ==== | ||
| + | Then do one of the following depending on the experiment type. | ||
| + | * For AUST,R1, R4, RDV, T2, ANZ, CRDS, CRF, OHIG:<code>setupsx</code> | ||
| + | * For CONT, RD:<code>setup8f</code> | ||
| This will configure the Mark5 for the experiment. | This will configure the Mark5 for the experiment. | ||
| + | ==== 4. Synch/time check ==== | ||
| Now check that the times are all OK: | Now check that the times are all OK: | ||
| Line 51: | Line 57: | ||
| look for ''syncerr_eq_0'', and that the final number is less than ~5 ms. | look for ''syncerr_eq_0'', and that the final number is less than ~5 ms. | ||
| - | If you see something like ''syncerr_gt_3'' then ''fmset'' may need to be run to synchronise the clocks. To do this, open a terminal on pcfs[hb|ke|yg], and type | + | If you see something like ''syncerr_gt_3'' or ''not_synced'' (Edited by Arwin, can someone check this and delete this message?)then ''fmset'' may need to be run to synchronise the clocks. To do this, open a terminal on pcfs[hb|ke|yg], and type |
| <code>fmset</code> | <code>fmset</code> | ||
| When the interface appears, type | When the interface appears, type | ||
| Line 60: | Line 66: | ||
| <code>mk5=dot?</code> | <code>mk5=dot?</code> | ||
| - | |||
| - | ===== Field System and station time agreement ===== | ||
| - | |||
| - | The fmset program can be used to confirm that the Field system time agrees with the station time. Open a terminal on pcfs[hb|ke|yg], and type | ||
| - | <code>fmset</code> | ||
| - | The Field System and Computer times should agree. | ||
| - | |||
| - | ===== Maser to GPS, Formatter to GPS delays and difference ===== | ||
| - | |||
| - | Now check the maser-GPS and delay through the DBBC and Mark5 (Formatter minus GPS) with the <code>maserdelay</code> and <code>clkoff</code> commands respectively which read the Agilent counters. Log these values in the checklist. | ||
| - | They should bethe same to within 0.5 microsec. The Log Monitor should report the difference whuch should be less than +/- 0.5 us. | ||
| - | |||
| - | Issue the ''maserdelay'' and ''clkoff'' commands a few times to check that they aren't drifting. A drift in the formatter-GPS time is usually an indication of a DBBC problem, usually requiring a reconfig to fix. | ||
| - | |||
| - | If one or both counters are not responding to these commands, you will see an error message like this <code>ERROR sp -4 GPIB Device time-out on response c2</code> To fix this, try re-setting the counters. In the Operator Input window, type <code>counter</code> and try the ''maserdelay'' and ''clkoff'' commands again. | ||
| - | |||
| - | |||
| - | ===== Test Recording ===== | ||
| - | |||
| - | Now make a test recording using the Mark5. This is done through the Operator Input window. | ||
| - | |||
| - | <code>disk_record=on | ||
| - | mk5=dot? (Output should appear as before, but it should say FHG_on) | ||
| - | disk_record=off</code> | ||
| - | Now check the data are OK: | ||
| - | <code>scan_check</code> | ||
| - | Check the last numbers are the correct date at the start of the scan, duration, the data rate (should be 256 for the 8MHz mode, 128 for the 4 MHz mode) and 0 at the end for no problems. Then plot an autocorrelation from the data: | ||
| - | <code>postob</code> | ||
| - | The output should appear in the pcfs[hb|ke|yg] VNC session. Good data should contain quite flat bandpasses and zero phase. See [[operations:monitoring_autocor|autocorrelation spectra plots]] for an example and what problems to look out for. If there's a problem, the DBBC may need reconfiguring. | ||
| - | |||
| - | To clear the disk module, ONLY IF YOU'RE CERTAIN there is no data already on the disk! | ||
| - | <code> mk5=protect=off; mk5=reset=erase </code> | ||
| - | [[operations:monitoring_autocor|Check that the spectra are OK]]. | ||
| - | If there are dropped or strange-looking bands, the [[hardware:dbbc.reprogram|DBBC may need reprogramming]]. | ||
/home/www/auscope/opswiki/data/attic/operations/documentation.ivs.mark5_v2.1345005172.txt.gz · Last modified: 2012/08/15 04:32 by Jim Lovell
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