SoundTraxx Tsunami Quick Start - Manual (Page 9)

Tsunami Quick Start Guide Page 6 Tsunami Quick Start Guide Page 6
Installing the Digital Sound Decoder
Isolating the Motor
If your model is not DCC-ready, make sure you isolate the motor first. The
two motor brush connections must be electrically isolated so they are driven
exclusively by the DSD motor outputs.
Failure to properly isolate the motor will damage your decoder and turn
it into an effective, but short-lived smoke generator!
Disconnect all wires leading to both motor terminals. Note that some motor
brush connections are made using a spring contact to the chassis. In such
cases, it will be necessary to remove or modify the spring contact as well.
Next, verify that each motor terminal is electrically isolated from the left and
right rail pickups using an ohmmeter or continuity tester. If all tests indicate
an open circuit, the motor is properly isolated. Do not proceed further until
this is done.
You will also need to disconnect the wires leading to any lights you wish to
use. Using an ohmmeter, check that each lamp lead is electrically isolated
from the frame as well as the left and right rail pickups.
If you don’t know how to perform the above tests, see the Installation Guide
for more detailed instructions.
Installation