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Table of Contents
Mark5B setup
The following assumes that a module (or modules) have already been loaded at the station.
Starting the Mark5 software
From within the pcfs[hb|ke|yg] VNC session log in to Mark5 you want to set up (either mk5hb, mk5ke or mk5yg) as oper. Do this so that the Mark5 software will continue to run even if the network link to the telescope goes down. e.g.
ssh oper@mk5hb
First check if the dimino program is running:
ps -ef | grep dim
If it is, we want to re-start it so that output is logged to the correct place. Stop it with the command
Enddim
Then start it and give the experiment code and station ID as the argument. E.g. for r1456 at Yarragadee:
cd ~ ./dim r1456yg
Some messages will appear, ending with a message reporting dimino is ready:
201222802:40:54 dimino Ready. End with Enddim, please
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
ntpq -np
Look for an offset (reported in milli-sec) from the the first server listed of about 10 ms or less 1). If there is a large offset, the Mark5 system clock may need resetting. Contact the on-call person for assistance.
Synchronising the Mark5 Clock
The following steps are done through e-remote Control or the Field System.
First set up the Mark5 recording mode. Use the experiment procedure file:
proc=<experiment_name><station_ID>
e.g.
proc=r1473hb
then type
ready_disk
Then one of the following depending on the experiment type.
- For R1, R4, RD, RDV, T2, ANZ, CRDS, CRF, OHIG:
setupsx
- For AUST, CONT:
setup8f
This will configure the Mark5 for the experiment.
Now check that the times are all OK:
mk5=dot?
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
fmset
When the interface appears, type
s
then confirm with a
y
Following this, the clocks should all be synchronised and agree with UT. Press the [Esc] key to exit fmset. Then check the times again:
mk5=dot?
