Keri Systems Doors16 - Manual (Page 12)

Doors™ Users Guide Keri Systems, Inc.
October 1998 01821-001
Page 12 Revision 2.1
COMTEST Serial Port Test
The Keri Systems, Inc. COMTEST program is a simple program. It is designed to send a
string of characters out the host computer's COM port output and see if they are echoed back
to the host computer's COM port input.
It is not designed to determine if the COM port has more serious problems such as conflicts
with other devices on the host computer. For these types of problems, troubleshooting by a
computer technician is required.
The Loop-Back Plugs
To use the COM Test utility program, unplug the connection made from the access control
system to the host computer's COM port. Plug in the correct loop-back plug. The loop-back
plug routes the output signal from the serial port back to the input signal. Two plugs are
provided – one with 9 pins and one with 25 pins. Virtually every serial COM port will use one
of these two plugs.
Starting COMTEST In Windows 95
1. Open the Windows Explorer program.
2. Locate the COMTEST.EXE program. For a default software installation, the program can
be found in the "\kerisys\doors\utils" subdirectory.
3. Double-click on the COMTEST.EXE program icon, or click on the COMTEST.EXE icon
and then click on the File
⇒
Run pull-down menu option.
4. Skip to the Running COMTEST section below.
Starting COMTEST In Windows 3.11
1. Open the FILE MANAGER program.
2. Click on the File
⇒
Run pull-down menu.
3. Click on the Browse button and locate the COMTEST.EXE program. For a default
software installation, the program can be found in the "\kerisys\doors\utils" subdirectory.
4. Click on the Run button.
Running COMTEST
1. When the program begins, the following screen will appear.
KERI SYSTEMS INC. COMM TEST UTILITY
Plug in the Keri Loopback Test plug before starting the test.
Type C to set COM port
Type T to test COM port
Use icon in upper left to quit the program
PORT: COM2
STATUS: Untested