2. Setup
22
COM-1(PM), COM-1D(PM)
Step 4 Checking Operations with the Diagnosis
Program
Use the diagnosis program to check that the PC card and driver software work normally, thereby you can
confirm that they have been set up correctly.
What is the Diagnosis Program?
These programs perform some simple checks on the PC card operation. Two programs are provided.
Terminal program (CTstCom.exe)
Data entered from the keyboard is sent directly from the port. The function of the program is equivalent
to the Hyper Terminal program provided with Windows.
Serial Communications Diagnostic Program (CommChk.exe)
Performs actual communications and indicates whether the results are correct or not (error).
The following describes the procedure for testing using the serial communications diagnostic program
(CommChk.exe).
Check Method
Obtain an RS-232C crossed cable or a loopback connector. If using a crossed cable, connect to the
COM port on the PC. If using a loopback connector, you can perform the check using a single COM port.
The figure below shows the wiring connections for a loopback connector.
Wiring connections for a loopback connector
3
2
7
8
4
6
TxD
RxD
RTS
CTS
DTR
DSR
