Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 TL1 (Transaction Language 1) and X.25 Interface Appendix D - 11
The setup terminal and the connecting DB-25 to DB-25 cable can now
be removed if necessary.
Debugging TL1 The TL1 interface does not report any messages until an activate user
command. Thus, it becomes extremely difficult to debug wiring or
software setup problems. The testing technique described below will
test the interface from the OS to the PAD, and later from the PAD to the
Galaxy.
Debugging OS to
PAD Connection
Testing the DSU
Verify the speed of the connection matches the number displayed on the
front panel of the DSU.
If the front panel displays the message “LINE”, then the wiring of the
8-pin network phone line is incorrect.
If the DSU error light is flashing, then there is a break in the data
connection, or the DSU is malfunctioning.
For normal operation, the transmit and receive lights on the DSU should
be flashing on and off in quick succession.
Debugging the PAD
For normal operation, the front panel transmit and receive lights for the
X.25 connection should be continuously flashing, although at a different
rate than the DSU.
Data transmitted and received by the Galaxy should be seen
momentarily on the front panel port lights.
1. Connect the terminal to the remaining end of the “To User”
Y-cable, using a standard DB-25 cable.
2. On the terminal, reconnect to the PAD by typing: ...<RETURN>.
3. Warm start the PAD, by issuing the command
w s<RETURN>.
4. Wait 5 seconds for the PAD to re-start, and reconnect to the PAD
by typing: ...<RETURN>.
5. Have the OS issue another activate user command.
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