Phase #25 - Gpsc-3B External Drivers And Receivers - AT&T 3B2 Off-Line Diagnostic Manual

Phase Descriptions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Phase #25
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GPSC-3B External Drivers and Receivers
Phase Name:
Type:
Function:
Tests:
Data Returned:
Notes:
GPSC-3B External Drivers and Receivers (xmiLrecv)
Interactive
This phase provides external looping cable from one port to another on the
GPSC-3B card.
The transmit-receive drivers test will send the entire American Standard Code
for Information Interchange (ASCII) character set for each Serial
Communication Controller (SCC) at the maximum and minimum supported
baud rates (38.4 kilobyte, 50).
Test 1 - SCC Channel A transmit - SCC Channel B receive (38400 baud)
Test 2 - SCC Channel A receive - SCCO Channel B transmit (38400 baud)
Test 3 - SCC Channel A transmit - SCC Channel B receive (50 baud)
Test 4 - SCC3 Channel A receive - SCC2 Channel B transmit (50 baud)
The expected and actual data values are returned.
This test will not stop on first failure but will continue until all ports are tested.
If a port(s) fails, a failure message is displayed; the other ports are then tested.
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