Linear DVS-1200, DVS-2400, RA-2400, DUAL-824, DVS-2408 manual Modem Initialization String

3.4MODEM INITIALIZATION STRING

PURPOSE:

Used to choose whether the default or a custom initialization “string” is sent to confi gure the modem (a “string” is a series of characters that are commands for the modem). Modem’s use initialization strings to setup their speed, data type, and other options. The RA-2400 sends the initialization string to the modem before using the modem to connect to the DVS-2400.

☞NOTE: There are hundreds of models of modems available, each with unique characteristics. Instead of using the default modem string, some modems may perform better with a custom initialization string.

USER RESPONSE:

✦Leave USE DEFAULT INITIALIZATION STRING option selected unless you are having trouble connecting with your modem.

✦IF YOU ARE HAVING TROUBLE CONNECTING WITH YOUR MODEM, and it tests OK with the Windows modem test diagnostics (see Section 1.5), try using a custom initialization string. Various model modems have different requirements for initialization strings. Refer to your modem’s manual for the required commands to place the modem in 300 BAUD BELL 103 confi guration. Two examples are “&F1&N1” and “N0S37=1”. If the initalization string is incorrect, the RA-2400 will display “ERROR WRITING INITIALIZATION STRING”.

☞NOTE: When entering a custom initialization string, don’t enter the “AT” command. The RA-2400 program will do this automatically.

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