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11
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
working properly, Windows will notify you.
Windows XP Modem Test