Serial Port Loopback Test Software
Two kinds of loopback tests can be used to isolate problems on the serial link: software loopbacks and hardware plug loopbacks. Whether it is an internal or external CSU/DSU, you can do both software and hardware loopbacks back towards the router. When a serial line does not come up as it must, the best way to troubleshoot the circuit is to perform loopback tests. Loopback tests allow you to isolate pieces of the circuit, and test them separately. Begin loopback tests on the customer premises with channel service unit/data service unit (CSU/DSU) loopback tests. Then proceed on to loopback tests that involve the telco or provider.
Measurement Collection Specialists |
ComTestSerial
Free serial communications test program
Download ComTestSerial for free, use it and give it to anyone who has a need for a serial communications test program!
MicroRidge manufactures a variety of serial interface devices. We had a need for a fast, effective and easy-to-use serial test communications program. We developed ComTestSerial to meet that need, and are offering it free of charge to anyone who has a need for a test program to help them understand the output of their serial device.
Version 3.1.0.133 released April 2, 2019 | Important Distribution Notes:
ComTestSerial was developed by and is the property of MicroRidge Systems, Inc., Sunriver, Oregon. Copyright 2004-2019 MicroRidge Systems, Inc. |
Why do you need ComTestSerial?
When you cannot get communications between your serial device and your application, you typically need to perform the following troubleshooting steps. These steps are general troubleshooting guidelines. Our experience has shown us that you can save hours and even days worth of troubleshooting if you first get an understanding of the operation of your serial device using a test program such as ComTestSerial.
Connect your serial device to a serial communications test program such as ComTestSerial.
Press the send button on your serial device to send information to ComTestSerial or send a command from ComTestSerial to your serial device.
Find the manual for your serial device to determine what the baud rate and communications parameters should be (yes, I know we all hate to read the manual!).
If you have multiple serial ports on your PC, change the serial port within ComTestSerial to determine which serial port your device is connected to.
Refer to the Help Troubleshooting Section in ComTestSerial for additional suggestions.
ComTestSerial Features
Much friendlier and easier to use than the HyperTerminal Program included with Windows.
Install on as many computers as needed.
Give it to anyone else who needs it.
Supports COM1 to COM200.
Supports baud rates from 300 to 115.2K.
Supports all of the commonly used communication parameters.
Set printer and screen font sizes.
12 user definable buttons for defining commands to send to your serial device.
Displays all characters including control and extended characters.
LED status indicators showing state of handshake lines and display parameters.
- Very fast screen updates.
Supported Operating Systems
ComTestSerial has been tested on Windows XP through Windows 10 When installing ComTestSerial, you should have Administrative Rights enabled.
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Serial Port Loopback Test Software Free
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Serial Port Loopback Test Software Download
Revised November 24, 2020