AWAN 3886 Server Installation and Configuration Guide

Current-Loop Support
AWAN 3886 Server Installation and Configuration Guide—427428-006
B-8
Troubleshooting the RS-232 20MA Current Loop
(3886-CL) Converter
Troubleshooting the RS-232 20MA Current
Loop (3886-CL) Converter
Two problems might occur if the 3886-CL converter is not working properly:
•
None of the ports is working properly (Table B-3).
•
One port is working; the other ports are not working properly (Table B-4).
If the 3886-CL converter is not operating correctly, return the unit to HP.
Table B-3. None of the Ports Is Working
Condition Action
None of the ports is working Check the AC cord and if the Power LED is lit; if not, make
sure that the AC cord is plugged in. If the unit is still not
functioning, return the unit to HP.
Power LED is illuminated;
power is present
Check that the adapters and cabling are correctly connected.
1. Check that the AWAN 3886 RS-232 port is connected to
the correct 3886-CL RS-232 port.
2. Ensure that each current-loop cable is connected to the
correct current-loop port and terminated by the proper
adapter.
Table B-4. Only One or More, But Not All, of the Ports Are Working
Condition Action
One port is working with a
connection to an adapter
connected to a terminal or
printer; other ports are not
working properly.
To test that all the ports work:
1. In the port that is working, leave the AWAN 3886 RS-
232 cable connected.
2. Test each remaining port by connecting the other end
of that same AWAN RS-232 line to the current-loop
cable connected to the 3886-CL converter.
Note: The AWAN server cannot detect the presence of a
3886-CL device.