I'm in the process of troubleshooting a few things in my 7B50 and I notice the schematic shows a connection to the A15 pin of the rear connector and that connection is labeled EXTERNAL SINGLE SWEEP. I'm using this in a 7704A and in this mainframe, the A15 connections are not used.
I see where the 7603 provides a Single Sweep Ready Indicator output. Is that the purpose of this output?
Thanks,
Barry - N4BUQ
