System Snapshot
System Features
Feature Comparison
System Architecture
Quick Set Up
Which Set is best for you
LH100 Handheld
LH90 Handheld
LH100 Manual in PDF
LH90 Manual in PDF
LH90 Version 3.5 PDF
LZV Manual in PDF
Set-100/10 AMP Supplement
Other System Components
Set 90/100 FCC Statement
Set 90/100 Warranty



















































































































































































Set-90 and Set-100
Version 3.6 Value Priced Professional Grade NMRA DCC Systems








The Set-90 and Set-100 our most advanced DCC systems designed to-date with features and value second to none!!!!  Set 100/10 is for larger scales: O, S and Large-scale.

In keeping with our design philosophy, both sets feature professional operation with extremely easy to use operator interfaces. Our design goal is to offer transparent operation which enables our users to concentrate on model railroad operation rather than having to become a DCC "junkie" in order to understand their system.

Our systems are fully upgradable as new features become available. Users who purchased our systems in 1993 continue to get the latest advances in DCC, because our philosophy is to support our customers by supporting their investment through low cost upgrades.

And no weasel words about compatibility or testing.  We test our our systems before we ship them and have submitted them for formal NMRA C&I testing.  Why? Because system testing assures that our systems fully conform to all the NMRA specifications, which is our responsibility and not yours. 

Both new systems are full featured professional systems with loads of features at an attractive price.


System Snapshot

Just by looking at these systems you gain a measure of the quality and design that went into them.  We custom mold our cases so that they are both comfortable to use and look great as well.

But there is much more than just visual effects.  Under the hood the electronic components used are top grade with extra capacity built-in for future growth.

Both sets feature our new LZV-100 integrated command station/power station. The LZV100 has three micro processors for superior performance and operation, includes all the features of our popular LZ100 and includes an integrated power station that can deliver a full 5 amps of DCC track power! The LZV100 also includes our most powerful command station software developed to-date with features such as advanced queue management and an internal database that supports a roster of 256 locomotives.

The LZV100 also has the RailCom bit cutout hardware built in! There is no need to purchase a lot of additional system hardware or perform complicated wiring to gain lots of advantages through this advanced form of two way DCC communication.

Because of the distributed nature of our high speed XpressNet, our systems end-user features depend on the devices that are attached. The Set-90 and Set-100 only differ in the handheld that is provided with the set.

Set-90 includes an LH90 Engineer's throttle, an LZV100 Command/Power Station, and easy to read manuals.

The Set-90 supports 31 XpressNet handhelds, 4 digit addressing, all forms of programming including our advanced one step address programming and operations mode programming, layout control feedback, advanced consisting, control of 256 locomotives and 999 turnouts, and 8 NMRA DCC functions (F1-F8 plus F0 forward and F0 reverse). The Set 90 is ideal for those DCC users who enjoy the feel of a well designed knob controller.

Set-100 includes an LH100 dispatchers throttle, an LZV100 Command/Power Station, and easy to read manuals.

The Set-100 supports 31 handhelds, 4 digit addressing, all forms of programming, layout control feedback, advanced consisting, control of 256 locomotives and 1024 turnouts, and all 28 NMRA DCC functions (F1-F28 plus F0 forward and F0 reverse).

The LH100 included with the Set-100 can also create momentary functions on a per function per locomotive basis. XpressNet devices such as the LH100, LH90, and XPA can take advantage of any available momentary functions once set up by a LH100.

The Set-100 is ideal for those users who enjoy the greater precision of push button control or for those that want the most features.

Set-100/10 includes an LH100 dispatchers throttle, an LZV100 Command/Power Station, one LV102 Power Sattion, and easy to read manuals.

The Set-100/10  supports all the features as the Set-100 plus the add on parallel LV102 that stacks with the LZV to give 10 AMPS.


Both sets offer all the advanced features expected in a professional grade DCC system, but they also deliver a lot more.  We provide these features transparently, so that you can concentrate on running your trains.

Advanced NMRA DCC Features - 9999 locomotive addresses, Advanced Consisting, Double Heading, access to all 28 NMRA DCC functions, 14 27 28 or 128 speed control, programming on the main, support for all forms of service mode programming plus the ability to reset decoders to factory default, support for 1024 accessory decoders addresses, layout feedback, RailCom, separate programming track outputs and much more.

Smart Locomotive Address Allocation - 2 digit, 4 digit, basic addressing, extended addressing. With all the choices DCC can be confusing.  Not so with V3.6!   With your Set-90 or Set-100,  you simply select an address by entering the locomotive address and the system automatically decides the form of addressing to use to control the decoder. You can also automatically store the 8 most frequently used locomotive addresses in the LH90 or the 12 most frequently used locomotive addresses in the LH100 stack for an even easier recall.

Smart Consisting - Smart consisting is a form of advanced consisting, where the command station maintains a database of the consist information.  This allows the Engineer to operate the consist from either the consist address or from any locomotive address from within the consist.  To make the operation even simpler the operator can scroll between any locomotive within the consist using a single key.  This allows easy access to function control from any locomotive from within the consist.  It also allows you, as the engineer, to go to any locomotive cab to run your train.

Smart One-Step Programming - DCC is rich in features but sometimes this richness makes it hard to use.  With our Smart One-step programming the system sets all the required CVs for you.  For example, when you want to set the decoder's address you enter any number from 1-9999.  From this value the system decides for you what CVs to set and sets them all for you in a single step.

Smart Function Control - The LZV100 supports the control of all 28 DCC locomotive functions. Using an LH100, you can easily configure any of the functions between F1-F28  to be either on/off or momentary for each individual locomotive.  The database within the LZV100 remembers this between operating sessions and is usable with any XpressNet device that supports this feature.

Smart Layout Feedback Control -  The LZV100 has full support for layout feedback and remembers the last setting made for each accessory decoder so that all devices know what the last turnout position that was thrown even if the decoder does not support layout feedback.  This also works for signaling and other layout control features.

RailCom - The LZV100 is equipped with a built in full RailCom detector.  This means you will not have to purchase a lot of extra system hardware to take advantage of this exciting new technology.

XpressNET Control Network - Both sets support the advanced XpressNET system network for high speed access to all system devices.  XpressNet is a open network designed on industry proven network products with a network protocol tailored to DCC.  The distributed nature of our network allows others a wide variety of different styles of handhelds to  be used.  That's because the user interface is the responsibility of the handheld while the state of the layout is the responsibility of the command station.  For backward compatibility the LZV100 also supports the older X-Bus protocols allowing you to operate either style of device on the network. 

Expandable - While you may never need it we have designed our new sets to grow throughout the life of your model railroad empire.  This lets you have access to a large multitude of devices from a growing set of DCC manufacturers, who support XpressNET.  For more information on available options check out our XpressNet gallery.

Growth - Upgrading through software enhancements is a hallmark of DIGITAL plus systems. There have been a lot of advances in DCC since we introduced our advanced 14 speed step 5 function system in 1993.  Because we understand that more advances are yet to come, we design each of our devices with the understanding that because technology changes our users deserve the comfort of knowing their Digital plus system will not be obsolete any time soon.  Users who purchased our systems in 1993 still enjoy the latest DCC features with their systems because of these upgrades.

Feature Comparison Tables

Basic Features

  Addresses Max Number of locomotives Max Number of Cabs Cab Type Number of turnouts NMRA Conformance
Set 90 0-9999 256 31 Knob 999 Yes
Set100 0-9999 256 31 Keypad 1024 Yes
Set 100/10 0-9999 256 31 Keypad 1024 Pending


DCC Features

  Functions Supported MU Capabilities Speed Steps Layout Feedback Momentary
Analog Operation Bi-Directional
Set 90 F0(F/R), F1-F28** Smart Consisting 14/27
Yes F1-F28 Address 0 RailCom
Set 100 and Set-100/10 F0(F/R), F1-F28 Smart Consisting and Double heading 14/27
Yes  F1-F28
per locomotive
Address 0 RailCom


Power Station (booster) Features

  DCC Track Amperage RailCom Support Minimum adjustable DCC Track Voltage Maximum adjustable DCC Track Voltage Opto-isolation Short and overload protection Support for Common Rail Wiring Support for Direct Home Wiring
Set 90 5 Yes 11 22 Yes Yes Yes Yes
Set100 5 Yes 11 22 Yes Yes Yes Yes
Set 100/10 10 Yes 11 22 Yes Yes Yes Yes


Programming Capabilities

  Service Mode Programming Service Mode Types Supported One Step Address Programming Operations Mode Programming
Set 90 Read/Write Register
Paged Direct (bit and Byte)
Yes Yes
(Bbit and byte)
Set100 Read/Write Register
Paged Direct (bit and Byte)
Yes Yes
(Bbit and byte)
Set 100/10 Read/Write Register
Paged Direct (bit and Byte)
Yes Yes
(Bbit and byte)



  Architecture Software Upgrades Warranty
Set 90 XpressNet Yes 10 years
Set100 XpressNet Yes 10 years
Set100/10 XpressNet Yes 10 years


System architecture

DIGITAL plus is designed with a non-proprietary open architecture. Each device in this distributed architecture contains the intelligence necessary to provide support to the external device it is supporting. This distributed architecture provides exceptional performance and allows us to add new capabilities without impacting existing devices.

The heart of the DIGITAL plus communication architecture is the high speed XpressNet based on the worldwide RS485 standard. XpressNet provides the data exchange between input devices and the command station. XpressNet consists of a 4 wire twisted pair connection. XpressNet may be up to 1000m. (3300 feet) long and can support up to 31 simultaneous handhelds. XpressNet is the highest performance communication network in the DCC industry, providing the modeler with exceptional growth possibilities. Many DCC manufacturers are now building XpressNet components which will allow you a wealth of flexibility in selecting components for your model railroad.

The 2 wire Control bus connects the command station to as many power stations (boosters) that are needed to power the layout. All DIGITAL plus power stations and command stations follow the proposed NMRA Control Bus RP and all DIGITAL plus power stations are optically isolated to allow safe connection to all forms of layout wiring including common rail wiring.

DIGITAL plus provides the capability for a separate 2 wire feedback bus to provide a connecting link between command station and feedback capable modules. A separate bus was chosen to provide maximum performance even in the largest of layouts.

Quick Setup

In order to operate your DIGITAL plus DCC system you will need some track, a locomotive and an external transformer.

On the rear of the LZV100 are 5 plugs.  These are used to connect the LZV to your layout.  To get operating you only need to connect 4 wires and plug in your handheld.

Connect the transformer to terminals U and V.  Use a suitable, UL listed transformer designed for model trains. The allowed maximum effective output voltage of the transformers must not exceed 20V AC or DC.  A 5-8 amp transformer will provide you the full capabilities of the system.  A low amperage transformer can be used but if you run more trains that the transformer can support the transformer may overload and shut down.

The track is connected to terminals J and K.

Plug in your handheld to the back of your LZV100 and run your first train, that's all there is to it!!!

The other connections can be connected later, if and when you need to expand.

Which set is best for you

Both sets are ideal for model railroad operation whether your railroad is a small branch line or a large class 1 railroad.  The difference is in the style of the handheld. But remember you can have all the advantages of both throttles on each system, by adding a second LH.

If you like that smooth feel of a knob then the Set-90 is best.  The custom design of the knob on the LH90 provides exceptionally smooth control and is very to use, even when holding the throttle by your side or behind your back. We designed this throttle so that it is easy to operate in one hand while controlling speed and direction. In other words you can concentrate on your trains, not the throttle.

If you like the precision of pushbutton control or want the extra features included in our dispatchers throttle then the LH100 is best.  Long a favorite, the LH100 pushbuttons allow for either single step multiple step or smooth continuous step speed acceleration and deceleration.  The LCD display provides a full reading of the speed/direction and function status of the locomotive being controlled. Many people like the more complete information indicated on the LH100.

Many operators use the LH100 for programming and operate with the LH90. The price difference in the system is due to the price difference of the throttles.

So, all in all, each system offers excellent model railroad control, but it depends on what throttle that style you prefer.

Visit our LH100 Virtual Guide for a complete LH100 Tour!

Visit our XpressNet Gallery for a sample of some of the exciting accessories for your system.