Decoder for Atlas N Scale H15/16-44 Locomotives

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Silent Drive or Precision Glide Control

The H15/16-44 decoder provides an option to use either Silent Drive or Precision Glide Control for motor control. Silent Drive is best for coreless motors and for applications were you want absolutely silent operation. Precision Glide Control provides much more precise slow speed operation because it pulses the motor to ensure the friction of the motor and drive train does not interfere with the operation. The default is Precision Drive Control. The motor control selection is made using CV50.

Preparing to Install the H15/16-44 Decoder

Before installing the H15/16-44 decoder in your locomotive, it is necessary to test (and adjust, if necessary) the locomotive for proper operation on conventional DC power. Replace any worn out parts, such as brushes. Also clean any dirt or oxidation from the wheels and pickups to insure that electrical contact is good. Now is also a good time to lubricate your locomotive. A locomotive that runs well under conventional DC will also run exceptionally well under DCC.

Precautions to Take When Installing the Decoder:

Although the H15/16-44 decoder has many internal safeguards to prevent damage, you must not allow any metal part of the locomotive to touch surface components of the decoder other than the pickup pads on the decoder that connect to the wheel-sets, the headlights, and the motor. Any contact to other parts of the decoder can cause a direct internal short circuit and destroy the DCC decoder.

The H15/16-44 decoder is not completely protected against static electricity and has sensitive electronic parts. When installing this decoder in your N scale locomotive, it is recommended that you wear a grounded anti-static wrist strap. Also be careful in handling the decoder, especially in the area around the top rear part of the decoder (the area where the microprocessor is located).

Atlas Model Railroad Co., Inc.

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Atlas 520099 manual Silent Drive or Precision Glide Control, Preparing to Install the H15/16-44 Decoder