Delay Unit Control Computer: Block Failure

Sometimes ASSISTANCE complains that the delay unit block -1 has failed. This refers to the delay unit control computer (DUCC). The problem usually responds to stop/restart in CAOBS. However, occasionally you may need to re-program the correlator (config). If this doesn't work seek help from your Duty Astronomer. You may need to reset the DUCC computer itself (which is located in the delay unit racks in the screened room). Be sure to re-program the correlator after restarting this machine.