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operations:rf_if_check_9.10.5

This wiki is not maintained! Do not use this when setting up AuScope experiments!

This is an old revision of the document!


RF and IF Configuration

Check the Status Monitor to see if the Cross-over switches and RCP IF Attenuators are at the default levels:

  • At all sites, cross-over switches should be Direct
  • IF Attenuator settings should be as follows
    • At Hobart:
      • S RCP : 0.0 dB
      • X RCP : 10.0 dB
      • ASCII code if setting manually: @@TT
    • At Katherine
      • S RCP : 15.0 dB
      • X RCP : 8.5 dB
      • ASCII code if setting manually: __QQ
    • At Yarragadee
      • S RCP : 10.0 dB
      • X RCP : 7.0 dB
      • ASCII code if setting manually: TTNN

The main thing is that the target power levels here are OK, (once the DBBC is set up and levels reported by fs command iread). If values aren't as above but power levels are attained without radical attenuation, then all is well.

Check the crossover switch and attenuator settings via the System Monitor GUI. If they are not correct, they can be adjusted using the rfpic and ifpic commands in the Field System. Documentation for these commands is here:

but each station has setup procedures for the default settings. Cross-over switched to Direct:

xodirect

IF attenuation to nominal:

ifnom

Occasionally these commands may report a communications error. If this happens, try re-issuing the command.

To set these values manually, use the nc (netcat) command and appropriate ASCII code given above. For example, to set the attenuators at Yarragadee:

nc pcfsyg 60002
S

Prompt will return: 'values', so type in:

TTNN

Then type “Ctrl-C” to quit

/home/www/auscope/opswiki/data/attic/operations/rf_if_check_9.10.5.1395796487.txt.gz · Last modified: 2014/03/26 01:14 (external edit)