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DCC Bitswitch™ Brake Signal Generator (Asymmetric DCC)


MSRP: $34.95


You need at least one type of  Brake Generator to operate any type of BitSwitch


With this component the DCC signal in the brake section can be altered to an Asymmetric Signal. (Appropriate for Lenz Gold/Silver Decoders, ZIMO)

The Basic Asymmetric DCC Generator is manually operated and is suitable for systems where the mobile decoders support Asymmetric DCC for braking, e.g. Lenz Gold/Silver & Zimo. One Brake Generator serves multiple Bitswitches.

Basic Asymmetric DCC Generator BitSwitches have two positions:

  1. In the OFF position the section of the layout controlled will operate as if no automatic controls exist.
    However Signals continue to operate and Braking Sequence Logic is maintained for easy resumption of automatic operation.
  2. In the ON position trains in this section will be controlled and dispatched by the BitSwitches contained in this section.

The Basic Asymmetric DCC Generator is a manual toggle switch.

In either position [on,off] a decoder can be sent new commands for speed changes, lights, sound etc.
If the particular train addressed is currently under automatic braking, new commands will not be activated until the train is released.
Only one DC Brake Generator is required for multiple BitSwitches


We offer 3 types of DCC brake generators as follows in order of recommended preference:

  • The Asymmetric DCC brake generator which works for a small subset of decoders is very simple to use and is the most flexible during operations  This is a licensed technology by Lenz and Lenz, Zimo and ESU decoders have this capability.  It has the most limited number of compatible decoders that recognize this method.  If the customer has compatible decoders, then this is the best method to use.
  • The Analog DC brake generator which works for any decoder that conforms to NMRA recommended practice 9.2.4 DC conversion to stop on the presence of DC.  Most decoders today work with this standard, although there are exceptions that must be determined by experimentation.  Typically in the past, customers have purchased this inexpensive unit for evaluation or run some simple equivalent DC experiments on their layouts to see if this method is going to work for them.  I can guide the customer through the testing if desired.
  • The Set Speed Zero brake generator works for all known DCC systems but requires an additional DCC booster (with the associated power supply) to implement.

If your railroad has DCC and you want to automate, you need DCC-Bitswitch. Bitswitches are compatible with all DCC systems and locomotive decoders that respond to Brake on DC Set Speed Zero (Brake Generators).

If you intend to use Bitswitch for O or G Scale, please note that fact in the “special notes” box when checking out!



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