Pricom

Pricom made a very nice DCC protocol analyzer with an LCD screen.

http://www.pricom.com/Trains/DCCTester.shtml

DCCT Both

Apparently no longer sold because of lack of the LCD screen.

You can update the firmware yourself, using a special cable:

Wiring for firmware update cable.

description RJ11 DB9 color
NC 1    
ground 2 5 yellow
xmit > pc 3 2 brown
rcv < pc 4 3 red
ground 5 5 yellow
NC 6    

 

current and last firmware version: v1.52

Download page for the Pricom tester

If you find one, buy it.

 

NCE also makes a packet tester, see the NCE page.

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