RS232 Analyser - How it works

Short description


What you need:

ComTrace RS232 Analyzer - PackageComTrace RS232 Analyzer - PC Comports
   A ComTrace package (All adapters in the box)        A Windows PC with 2 serial interfaces



If your PC has only one or no serial interface: We offer you our ComTrace kits that contain interface cards (PCI, PCI express, PCMCIA or ExpressCard) with 2 serial interfaces.

Exsys-1332hmv 2xSerial USBComTrace RS232 Analyzer - Exsys 1352ComTrace RS232 Analyzer - Exsys 1372ComTrace RS232 Analyzer - Exsys 43073ComTrace RS232 Analyzer - Exsys 44092

Hint: For precise time measurements the USB-to-RS232 adapters in market are NOT sufficient. They delay the signal and data transfer to strong!


Installation, configuration and start:


Please also have a look for the following description!


ComTrace RS232 Analyzer - DTE/DTE-Sample configuration

Example: ComTrace DTE/DTE configuration/measurement setup 


  • Installation of the software
  • Settings in device manager for both RS232 interfaces used: FIFO RX Buffer = 1 ==> No parking of events/data in UART buffer
  • Starting  Comtrace
  • Setup the required number of both COM ports in the Live-Port window for Com A and B.  Normally doesn't need to be changed once again!
  • Simply plug the Com-AB-cable to the existing RS232 interfaces
  • Put the free plug into the middle of the testline cable (9 or 25 PIN in the box)
  • Loop in the free plugs of the testline cable into the connection you want to measure. (4 adapters 9/25 PIN in the box)
  • In Live Port Setting you can setup baudrate, data, start and stop bits along with parity. This may differ between missions and can be saved into separate environment settings.
  • Start recorder via button "REC" and if needed interrupt or complete with buttons "PAUSE" or "STOP".
  • Confirm record mode and filename and go-ahaed!
  • During recoridng you should see then incoming TX/RX characters and signal changes LIVE.
  • After "STOP" you automatically go back into "Examine" mode (View mode/Analysis)
  • Congratulations: You completed your first RS232 recording!