Reference Manual

Table Of Contents
3. Installation
LUM0020CD Rev June-2020 Page 23 of 112 Copyright © 2019FreeWave
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3.2.3. Troubleshooting Terminal Emulators
These are some common issues encountered while using terminal emulators:
Nothing displays on the screen after placing the radio into Setup mode.
This usually indicates one of two things; either the wrong Com port is selected or a null
modem cable is being used. Change the Com port, verify the cable, and attempt to
connect again.
In addition, if the radio has been previously configured, you could be using the wrong
port to access the Setup menu. For more information, see Setup Port (on page 33).Try
connecting to the other port.
Unreadable characters display on the screen after placing the radio into Setup mode.
This typically indicates a baud rate mismatch. Unreadable characters before
grounding the pin indicates Diagnostics is enabled and the terminal emulator is
connected to the Diagnostics pins. Update the terminal emulator's baud rate to 19200
and reconnect to the radio.
The Setup menu displays on the screen, but nothing happens when keys on the
keyboard are pressed.
This usually indicates flow control is turned on in a three-wire connection (Rx, Tx, and
Gnd). Update the terminal emulator's flow control setting to None and reconnect to the
radio.
A connection exists, the terminal emulator is receiving data, and some data is correct,
but the remaining data is in unrecognizable characters.
This usually indicates a parity mismatch. Ensure that the parity of the radio and the
parity of emulator are are set the same.
LRS455A-C, LRS455A-CE, LRS455-T
User-Reference Manual