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Power cycle procedure for camera/USB fiber extender

You can see log files for the IOC here:  /cds/data/iocData/ioc-rix-dir-andor/iocInfo/.

Can look for "USB disconnect" error messages in /var/log/messages.  Can see device numbers with "lsusb" and compare to device numbers in /var/log/messages.

Occasionally after power cycling the camera or everything if there was a power outage the USB fiber extender will come back in a bad state where it won't communicate with the camera. This seems to happen to the direct beam path andor an order of magnitude more often than the one on the VLS. Too recover from this when it happens do the following procedure:

1. Power off the camera
2. Power off the camera side of the extender
3. Unplug the server-side extender USB cable from daq-rix-andor-01. The DIR andor extender has the black USB cable (top USB port) and the VLS andor extender is the silver cable (bottom USB port).
4. Re-plug the server-side extender USB cable into daq-rix-andor-01.
5. Power on the camera side of the extender. You should see the link led turn on on the extender, and the host led blink slowly.
6. Power on the camera. The host led on the camera side extender show turn on solid now, and the activity led should blink intermittently.
7. Restart the IOC (the existing IOC process my be locked up and may need to be kill -9 to die) or alternatively just reboot daq-rix-andor-01.

Debugging

You can see log files for the IOC here:  /cds/data/iocData/ioc-rix-dir-andor/iocInfo/.

Can look for "USB disconnect" error messages in /var/log/messages.  Can see device numbers with "lsusb" and compare to device numbers in /var/log/messages.