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Appendix F: Serial Loopback Test

This procedure will demonstrate how to test the operation of a serial communication port (COM port) on an

IBM compatible PC running Windows 95 or Windows 98. This procedure may also apply to computers

running Windows NT 4 and Windows 2000 although this procedure has not been verified on those

operating systems.

This procedure relies on a Windows communications utility called “HyperTerminal” being installed on

your computer. To determine if you have this program installed follow these steps:

1. Click on the “Start” button on the Windows Desktop.

2. Select “Programs”, then “Accessories”, and then “Communications” from the popup menus.

3. If HyperTerminal is installed, you should see it in the “Communications” menu (See Figure 1).

Note that on some computers, HyperTerminal may appear in the “Accessories” menu instead.

4. If HyperTerminal is not installed, either install it from your Windows CD or consult with someone

who can help you with this process.

Figure 8

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