I run my early Protosounds stuff using a TPC-300, 6-14189, powered by a PH-180, and controlled by a CAB-2. Lionel has added some clever software (advance features) to the newest versions of the TPC's, and I would assume by extension to the ZW-L as well. These make the clinks and clanks a little less stressful.
To run Protosounds engines your ZW-L should be powering the track in conventional mode. In this configuration you'll use the big red knob to apply power conventionally, but you can select the Protosounds- related advanced features via the CAB-2, as follows:
Using QSI/MTH Proto 1.0 features with CAB-1 or 2:
Additional features have been added to the TPC Series
making the operation of QSI/MTH E units easier. The first is the
power up sequencer. This feature allows QSI/MTH E Units to
operate with the TrainMaster system.
To power up track #1 with a QSI/MTH E unit press the following keys
• (TR) (#1) select track #1
• (AUX1) (#9) performs QSI/MTH power up After engine sounds begin to operate, press
• (#4),(#5),(#8) Depending on the startup voltage you desire.
Always press (#4),(#5),(#8) before selecting the direction key or the locomotive will take off.
There are three different possible startup voltages. The first is (#8) which set the voltage to approximately
½ of the input supply. The second is (#5) which set the voltage to approximately 1/3 of the input supply.
Lastly (#4) if you accidentally power up the unit without using the above procedure and the engine does not come out of reset, simply turn the power completely off and restart it using this sequence.
The second is the programming button. This button toggles the voltage between 8 and full voltage automatically .
To use the programming function from the CAB-1 or 2. First complete the power sequence listed above. Then perform the following:
• (F) Reset engine by completely removing power
• (AUX1) enable numeric entry
• (#9) This places full voltage on the track.
• (#7) Sends programming pulse to QSI/MTH units.
Repeat the (#7) key sequence until the desired feature is selected then press the whistle. Again do not press the (AUX1) between the selection of (#9) and (#7). Consult your MTH engine operating instructions for specific details.
For more see https://ogrforum.ogaugerr.com/...%20Manual%20v1.3.pdf