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Power Cycling an Archon

Power Cycling an Archon

Owned by Josh Walawender
May 06, 2025

If an Archon needs to be shut down (i.e. because it will be unplugged temporarily) this is the procedure to power it off before unplugging:

  1. Ensure the detectors are not exposing or reading out and that there are no scripts running.

  2. Turn off CCDPOWER using modify -s kpf[green/red] CCDPOWER=Off

  3. Shut down the detector control dispatchers using kpf stop kpf[green/red]0 then kpf stop [g/r]camerad

  4. Power off or unplug the Archon as needed

 

To recover:

  1. Restore power to the Archon

  2. Start detector control: kpf start [g/r]cameradthen kpf start kpf[green/red]0

  3. Load an ACF file to the Archon using kpfSetReadModeNormal (you can set fast read mode if that is desired instead).

  4. Restore CCDPOWER using modify -s kpf[green/red] CCDPOWER=On

 

You may need to recover one or more of the detectors and kpfexpose after this.