Next: Servo amps alarm
Up: Appendix F: TROUBLE SHOOTING
Previous: Unable to identify field
If the temperature is out of range (CCD warming up), fill immediately.
SITe2 has an off-centre filler tube which means that at very high and
very low ZD's, then liquid Nitrogen can syphon out, rapidly reducing
the hold-time. The danger is under-filling the cryostat: continue
to fill until liquid Nitrogen is seen escaping from the filler tube
or side vent. If the 5v digital line goes out of range, ignore it,
but log it in the database.