Comments and Suggestions
   
Last updated: April 16, 1997


FDDI/DX

Selftest

Normal mode selftests run at powerup when the DIAG/NORM switch is in the NORM position. Attach a terminal set for 9600 baud, 8 data bits, no parity, and 1 stop bit to the serial port to monitor normal mode selftest output.

Extended Selftests

Extended selftests are run with the DIAG/NORM switch in the DIAG position. Attach a terminal set for 9600 baud, 8 data bits, no parity, and 1 stop bit to the serial port, and attach loopback cables between ports FDDI-A and FDDI-B. Enter s to enable the extended selftests. Enter a to display the Diagnostic Engineering Monitor (DEMON) menu.

LEDs

LEDs indicate the status of the FDDI PCB and the network during operation.
LED
4
LEDs
3 & 1
LEDs
2 & 0
LED STATUS
x Off Off Connection is dead
x Off On Connection sequence in progress
Off On Off Connection is complete and is part of token path
On On Off Connection is complete but there is no token
x On On Connection is too noisy

LEDs 4, 1, and 0 indicate connection status for port FDDI-A.

LEDs 4, 3, and 2 indicate connection status for port FDDI-B.

LED 4, RINGOP, is ON when the ring is not operational.

LED 5, PACKETIO, changes state each time a packet is received or successfully transmitted. LEDs 6 and 7 blink alternately four times per second under normal conditions.

LEDs 6 and 7 blink together two times per second when a non-recoverable firmware problem occurs.

LED Patterns During Selftests



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