Nextel comm Modem IR1200 User Manual download pdf (Page 103)

Troubleshooting

RFM-4002-5015 Rev 3

Symptom Troubleshooting Tips

Modem keeps

dropping connection.

Check the signal strength and signal

quality icon to be sure the signal is not

weak or poor.

Modem does not

respond to hang-up

command from the

software’s command

mode.

Make sure that:

• The Drop DTR on Hang-up is enabled

in the communication software.

• The hang-up string setting is

‘+++ATH’.

Computer screen

appears distorted.

Turn off Auto Baud by initiating AT+IPR

command. Make sure that the baud rate

setting in your communication software

matches the baud rate setting of the

modem.

No characters are

displayed on the

computer screen

Turn on Local Echo by initiating the ATE1

command.

Images

transmitted/received

are of poor quality.

Ensure that the RTS/CTS flow control is

enabled in the communication software

and is set to &K3.

Error Messages

The following table outlines error messages that you may receive when sending

or receiving data. These error messages will appear on the computer screen

Message Explanation

ERROR

• The command was not recognized.

• The command line maximum length

was exceeded.

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 121 122

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Nextel comm Modem IR1200 User Manual Page 103

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