The DSX-2PC (Two Port Controller) is where each serial port from the Primary Comm Server and the corresponding one from the Backup Comm Server connect. The output of the 2PC then goes to a direct ...
The DSX-SPST (Serial Port Switch Trigger) board is the power distribution and Backup Comm Server monitoring board. It receives +15VDC (Class II Power Limited) from the DSX-1040PDM board and ...