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At each observatory you need to run the
obs.pl program. This connects to the correlator processors at Parkes and copies the requested data down the network.
Obs.pl should be run remotely by who ever is running the fringe test, as they sometimes hang and have to be restarted. This should be run after the correlator processes are started. Once you have logged onto the recorder PCs, you need to cd to the directory where the data is being recorded then run obs.pl. If the recorder is currently been run via
cdisko or other programs which use “recorder_server”, then an alias “
recdir” is setup which will automatically change to the correct directory. Usage will normally be something like:
On Mark5 systems you will have to “
cd” to whatever directory the Mark5 is dumping the data.
If disk recording is moved to a different directory,
obs.pl will have to be stopped and restarted in this new directory.
The recorders are running on the following machines and usernames. Note if remote recording is being run, you need to log onto the machine where the data is being written to disk NOT the machine where the data is received from the telescope. You can only connect via ssh.
Note that at the ATNF observatories we also record data onto cave-store-ext and pam-store-ext. In such cases you need to run
obs.pl on the machine where the data is being recorded - see the note below.
rtfc_obswin.csh will start up 6 xterms and log into the recorder PCs. If you have ssh passphrases setup, you will not need passwords.
The following environment variables need to be set (or added to existing paths)
|RTFC_CONTROL||Optional, defaults to localhost|
|RTFC_CORRELATOR||Optional, defaults to localhost|
|RTFC_ANTID||E.g. 'At', defaults to 'Tt'|
|RTFC_ANTNAME||'ATCA Phased array', defaults to 'Test Antenna'|
If you are recording to a remote recorder you need to ensure RTFC_ANTID (and RTFC_ANTNAME) are set. For remote recorders which generally only record data from a single teleacope this will normally be setup in the login scripts. cave-store can record data from Mopra and ATCA. Aliases have been setup “mopra” and “atca” to setup the environment. E.g.:
Normally if the telescope IF spectrum is inverted, a flipped DAS profile should be used. However for 64 MHz recording the spectrum cannot be “flipped”. If you know or suspect the band is inverted you can run obs.pl with the “-invert” option and it will flip the data for you.
> obs.pl -invert