9. Testing the Modem

A modem is used when connecting to a Console remotely, over the telephone line. A modem is not required for local programming with a USB cable.

When using a modem, be sure that the computer is running correctly and that the modem is installed and working properly before you run the RA4200 Remote Access Program.

Use the following steps to test the modem and determine the computer’s

COM port number that it is connected to.

To Test the Modem in Windows XP

Windows Control Panel can be used to test the modem and determine what COM port the modem is connected to.

1.Press START, SETTINGS, CONTROL PANEL.

2.Double-click on PHONE AND MODEM OPTIONS.

3.Click on the MODEMS tab. The modem and the COM port used should be shown.

4.Note the COM port number. It’s used when setting COM port in the RA4200 Send/Receive window (see Section 11.1).

5.Click PROPERTIES and select the DIAGNOSTICS tab.

6.Click QUERY MODEM. If the modem is connected and working properly, the Modem Information window will display detailed

Command and Response modem information. If the modem is not

Windows XP Modem Test

working properly, Windows will notify you.

 

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Linear PERS-4200 Series manual Testing the Modem, Command and Response modem information. If the modem is not