RFM errors investigation

Jim, Dave:

during the Ham6 vent, we further investigated the LSC RFM receiving errors. We remotely bypassed several nodes in the Y-Arm RFM loop (except for the h1iscex sender and the h1lsc0 receiver). We found that the Y-Arm errors disappeared when h1asc0 was bypassed. We then bypassed h1asc0 on the X-Arm loop and ran for 50 minutes without a single LSC receive error (error rate is typically 50 per hour).

Bottom line, h1asc0 is somehow causing the ISC to LSC errors. We found that of the 16 RFM channels the ASC is sending per arm, only 8 have receivers. Clearly we should start by removing the 8 obsolete senders (per arm, 16 in total). We have scheduled this with Daniel for such time as when the DAQ can be restarted.

We are investigating this further on the DTS.