Sheila wanted to run a couple of DBB scans of Frequency Noise. From the DBB MEDM found could not switch from LOCAL to LOCK (or any other state). Per Peter's instructions; (1). Checked the DBB toggle switch was in the RMT state. It was. Cycled the switch, but no change. Could not switch from LOCAL to any other state. (2). Then tried recycling the DBB AI chassis, but still no change.