The latest series of HOB experiments are using X-band for observations on the Hobart12-Hobart26 baseline. To get the best sensitivity we are using the DBBC for Hobart26, rather than the mark4 rack. We use the S/X receiver on the 26m.

====== Hobart12m ======

Drudg the experiment file as normal, but please note that you will need to run ''setupxx'' rather than ''setupsx''. Only 8 IFs are being monitored in caltsys (BBCs 1-8, but both USB and LSB channels) and the autocorrelations will appear differently (with the second 8 channels having reversed shapes to the first 8). 

====== Hobart26m ======

The Hobart26m uses the DBBC backend for these experiments rather than the mk5 rack. Unfortunately, the FS only supports controlling one "rack" at a time, so you need to edit configuration files and restart the FS to swap between the backends. There are some instructions included below.

  * **DO NOT  RUN SLOGIT!** This script assumes that you are using the mark4 backend and will create an unusable proc file! Instead, run drudg directly. As ''oper@hobart''
    - ''cd /usr2/sched/''
    - ''scp oper@pcfshb:/usr2/sched/hob006.skd /usr2/sched/''
    - ''drudg hob006.skd''
    - Check equipment with option ''11'' - it should be set to DBBC and Mark5B for the rack and recorder.
    - Return to the main menu and produce a proc file with ''12'' and snap file with ''3''
    - Copy a previous experiments proc file across to current experiment (these are fairly heavily customised at the moment) with ''cp /usr2/proc/hob005ho.prc /usr2/proc/hob006ho.prc''
  * On ''hobart'', terminate the FS and then run the following commands:
    - ''cp /usr2/control/mk5ad.mk5ho.ctl /usr2/control/mk5ad.ctl''
    - ''cp /usr2/control/equip.dbbc2.1gbps.ctl /usr2/control/equip.ctl''
  * Restart the FS with ''fs'' and then check that the correct mark5 is selected with 
    - ''mk5=dot?'' - this should return a "normal" response, as for the AuScope antennas.
  * Load the hob006 procedure as per normal and make sure that there are no errors reported by the FS after running ''setupxx''.