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Chapter 3: Troubleshooting
Situation A: The modem does not answer through the serial link
If the Wireless MultiModem does not answer through the serial link upon an attempted
transmission of data or voice signals, see the table below for possible causes and solutions.
If the modem
Then ask ...
returns ...
(nothing)
Is the modem powered correctly?
Is the serial cable properly connected to
the modem and PC sockets?
Is the communication program
properly configured?
Is another program interfering with
the communication program?
Solutions for 'no connection through serial link' situation
18
Chapter 3 - Troubleshooting
Action
Provide a power supply in the range of 5 to
32Vdc.
Connect cable per step 2 of the "Electrical
Installation and Configuration" procedure.
Verify cable pinout per"RS232 15-Pin
Connector Pinout" table, esp Rx & Tx
connections.
Verify reception & transmission.
In communications program, verify that
modem parameters have been set to
the values shown here:
= 8
Data Bits
= none
Parity
= 1
Stop Bits
= 115200 bps
Baud
Close any such application program.
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