ESU 53900 Decoder Tester
 
Latest version - A very handy tool to test bare decoders, away from a model.
 
Interfaces:
1) 6-pin NEM 651 socket
2) 8-pin NEM 652 socket
3) 21-MTC NEM660 interface
4) PluX22 socket
5) Next18 interface
6) Decoders with bare wires can be contacted via the terminal block (spring loaded connectors)
 
A quality coreless motor with flywheel serves in conjunction with LEDs indicating the direction for checking the motor output is included.
 
An LED array provides lighting feedback, for checking headlights and Aux lighting functions. 
 
For testing LokSound decoders, ESU includes a 20 mm speaker. 
 
Two SUSI plugs facilitate the direct test of optional SUSI modules as well as the connection to another circuit board.
 
The electrical connection to either the command station or the LokProgrammer is facilitated by a removable, 2-pole terminal block (same system as used on the LokProgrammer and the ECoS) or via two solder points.