Using test terminal to test a port, By-port basis – Comtrol RocketPort Plus 422 Universal PCI User Manual
Page 21
RocketPort uPCI Plus 422 User Guide: 2000370 Rev. B
Troubleshooting - 21
Troubleshooting
Using Test Terminal
to Test a Port
Test Terminal (WCom2) allows you to open a port, send characters and commands
to the port, and toggle the control signals. This application can be used to
troubleshoot communications on a port-by-port basis.
The Send and Receive Test Data sends data out the transmit line to the loopback
plug, which has the transmit and receive pins connected thus sending the data
back through the Rx line to Test Terminal, which then displays the received data in
the terminal window for that port. This test is only testing the Tx and Rx signal
lines and nothing else. A failure in this test will essentially prevent the port from
working in any manner.
The Loopback Test tests all of the modem control signals such as RTS, DTR, CTS,
DSR, DCD, and RI along with the Tx and Rx signals.
Note: This test will fail and is expected to fail since RS-422 does not have the
modem control signals that are present in RS-232 for which this test is
designed.
The following procedure shows how to use Test Terminal to send and receive test
data to the serial ports and run a loopback test. If necessary, install the Comtrol
Utility package using
1.
Stop all applications that may be accessing the ports such as RRAS or any
faxing or production software. See the appropriate help systems or manuals
for instructions on stopping these services or applications.
If another application is controlling the port, then Test Terminal will be unable
to open the port and an error message will be shown.
2.
From the Start menu, select Programs > Comtrol > Utilities > Test Terminal
(WCom2).
3.
Select File > Open Port, the
appropriate port (or ports)
from the Open Ports drop list
and Ok.
Note: If you left Port Monitor
open from the previous
subsection, you should
show that the port is
open.
4.
onto the port (or ports) that
you want to test.
5.
Select Port > Send and Receive
Test Data.