| Introduction 
to the Digitrax SE8C 
  The 
Digitrax Signaling System is organized around the concept of “security elements” 
which are similar to what U.S. prototype railroads call “plants.” The Digitrax 
SE8C signal decoder displays aspects for up to 32 heads for 8 individual security 
elements (plants) using either a LocoNet Throttle or a computer with compatible 
software. When used with associated occupancy detectors and compatible software, 
the SE8C can be set up to protect the turnout as shown by the example below. The 
SE8C decodes switch commands from a throttle or associated software so that the 
appropriate aspects are displayed on the signal heads. 
 Each 
security element is made up of three legs designated A, B, & C. Every piece 
of track on your layout can be broken down into security elements to describe 
how each detection section connects to the other sections on your layout.
 
  A to B, 
A to C, B to A & C to A are the only possible connections, based on turnout 
position. B to C is not possible.
   Occupancy 
detection is required for any signaling system to function. Occupancy detection 
inputs can be handled by any LocoNet compatible occupancy detector (Any BDL16 
Series Occupancy Detectors or BD1 Occupancy Detectors used with DS54s will work).  
 Transponding is not 
needed for the Digitrax Signaling System.    The 
SE8C sends its output to the signal driver to drive the signal heads. Each SE8C 
has 8 sets of signal drivers, each capable of driving a set of signal masts. Each 
set of masts can have up to four heads and each head can have up to four different 
lamps or a multi-color searchlight. The heads may be on separate single masts, 
dual masts, or gantries. Each mast has its own signal driver. In practice, each 
set of signal masts usually corresponds to the track controlled by a single security 
element.
   The 
SE8C signal decoder and occupancy detector are connected to LocoNet so that all 
security elements on the layout can communicate with each other as the occupancy 
of each detection section of track changes. Since the Digitrax Signal System communicates 
through LocoNet, it does not need DCC to work. The SE8C signal decoders and BDL16 
Series occupancy detectors can communicate directly with other LocoNet devices 
on the layout, they do not need a command station for this communication. This 
means that they can be used on non LocoNet DCC systems and DC systems where LocoNet 
is added to support signaling.   The 
SE8C lets you control signals manually from your Digitrax throttles or automatically 
through LocoNet compatible computer software such as Railroad & Company, WinLok 
and others. For 
more information on the SE8C and accessories please click here to visit the Digitrax 
web site.
   
                 
                  | Item 
                    Description | Image | MSRP | Our 
                    $ | Part 
                    # |   
                  | BD4 
                    QUAD OCCUPANCY DETECTOR Cost Effective occupancy detection for 4 detection 
                    sections
 Outputs 
                    for panel mounted LEDs to display occupancy
 Detects 
                    any powered locomotive
 Detects 
                    un-powered rolling stock equipped with resistor wheel sets
 Transmits 
                    occupancy information to your LocoNet System using DS45 or 
                    SE8C (sold separately).
 |  | $29.95 | $23.96 | DIG-BD4 |   
                  | BD4N 
                    DCC 4 Block Occupancy Detector 
 Low-cost, High-sensitivity DCC block-occupancy detection.
 Adjustable resistance/current detection section (DS) trip 
                    threshold.
 8A capacity, suitable for all scales and track wiring configurations.
 Noise resistant and compatible with BDL168 sections.
 On-board status leds for stand-alone occupancy and track power 
                    indication, expandable for optional LT5 or fascia mounted 
                    occupancy indicator leds.
 Plug and Play connections to simplify setup. Can cascade Booster 
                    wires.
 Isolated Occupancy output signal lines can drive most common 
                    signal system or control interfaces.
 Compatible with DS64 and SE8 modules for signaling, control 
                    and reporting occupancy onto LocoNet.
 Replaces the BD4.
 
 
 |  | $37.00 | $29.60 | DIG-BD4N |   
                  | N 
                    scale Turnout Signaling Kit |  | $27.00 | $21.60 | DIG-SNABC |   
                  | N 
                    scale Mainline Signaling Kit |  | $27.00 | $21.60 | DIG-SN2AB |   
                  | RX4 
                    4-Zone Transponding Receiver Add-on for BDL Series Detectors
 The RX4 is a 4 zone transponder detector for use with Digitrax 
                    occupancy detection systems. The RX4 enables you to not only 
                    see what blocks are occupied but also identifies what is there.
 
 •Know the layout zone location of transponder-equipped locos 
                    and rolling rolling stock
 •Each 
                    RX4 handles 4 transponding zones
 •Low 
                    current pulses wont interfere with DCC decoders or other track 
                    signals
 •Can 
                    be used in conjunction with other means of occupancy detection 
                    to customize your layout's feedback system
 •Works 
                    with most DCC compatible systems
 •Can 
                    be adapted to work with other command control systems as well
 •Location 
                    and identification information is updated continuously on 
                    LocoNet
 •Location 
                    Information can be configured to be displayed on a track diagram
 •No 
                    modification of existing equipment required, just add the 
                    transponding components and you're ready to go.
 •More 
                    features than any other method of "bi-directional" 
                    communication.
 Note: RX4s must be used in conjunction with a Digitrax BDL16 
                    series occupancy detector to function.
 
 |  | $54.00 | $43.20 | DIG-RX4 |   
                  | TF4 
                      Dual DCC Function Decoder with Integrated TranspondingTF4 Quad DCC Function Decoder with Integrated Transponder
 
 •Four 125mA (250mA peak) function output for lights or other 
                      functions
 •Functions 
                      can be turned on/off using F0-F12
 •Supports 
                      both 2 digit and 4 digit addressing
 •Programmable 
                      from DCC compatible equipment
 •Configurable 
                      Strobe feature lets you simulate flashing lights like FRED, 
                      Strobes, Mars Lights, etc. on the yellow and white leads
 •Standard 
                      On/Off Function operation available on green & violet 
                      leads.
 •Compatible 
                      with Digitrax DCC Transponding Systems
 •Approximate 
                      size: 0.461” x 0.31” x 0.161” (11.7mm x 7.8mm x 4.1mm)
   |  | $23.00 | $18.40 | DIG-TF4 |   
                  | TL1 
                      Single DCC Function Decoder with Integrated TranspondingTL1 Single DCC Function Decoder with Integrated Transponder
 
 
 •Your TL1 can be used as:
 1. Function only DCC decoder with transponding
 2. Digitrax Transponder
 3. Function only DCC decoder without transponding.
 •Single 
                      125mA (250mA peak) function output for lights or other functions
 •Function 
                      can be turned on/off using F0, F1, F2, F3, or F4
 •Supports 
                      both 2 digit and 4 digit addressing
 •Programmable 
                      from DCC compatible equipment
 •Configurable 
                      Strobe feature lets you simulate flashing lights like FRED, 
                      Strobes, Mars Lights, etc.
 •Compatible 
                      with Digitrax DCC Transponding Systems
 •Approximate 
                      size: 0.461” x 0.31” x 0.161” (11.7mm x 7.8mm x 4.1mm)
   |  | $20.00 | $16.00 | DIG-TL1 |   
                  | Signal 
                    Mast Base Kit Includes 3 Signal Masts
 AVAILABLE WINTER 2003
 |  | $17.00 | $13.60 | DIG-SMBK |   
                  | Signal 
                    Driver Cable Kit Materials for making 2 signal driver cables, includes 20' 
                    of 10-wire ribbon cable and 8 10-pin sockets
 AVAILABLE WINTER 2003
 |  | $22.00 | $17.60 | DIG-SDCK |   
                  | Signal 
                    Mounting Hardware Kit Under layout mounting hardware for signal driver cables and 
                    their sockets. 6 metal signal straps and 6 signal spacers
 AVAILABLE WINTER 2003
 |  | $12.00 | $9.60 | DIG-SMHK |   
                  | Terminal 
                    Strip Mounting Kit 2 Terminal strip boards with resistors for easy installation. 
                    Each strip can handle from 1 to 4 signal heads
 AVAILABLE WINTER 2003
 |  | $17.00 | $13.60 | DIG-TSMK |   
                  | SE74 
                      Signal Decoder
 
 
                      Fully 
                        connectorized installation.
Optional 
                        support for DCC 9-Aspect control mode, including Lunars.
Easy 
                        setup with Option Switches and LocoNet programming.
Configurable 
                        for four solenoid or four slow-motion turnout control.
8 
                        Input lines for local control and sensors.
8 
                        System routes with 8 entries each.
Advanced 
                        LocoNet configuration capability with Series7 style installation 
                        support using a DT602.
 |  | $119.00 | $95.20 | DIG-SE74 |   
                  | LocoNet 
                    Occupancy Detector for 16 sections |  | $110.00 | $88.00 | DIG-BDL716 |   
                  | LocoNet 
                      DCC Auto-Reverser with Detection, Transponding and Power 
                      Management 
 |  | $49.00 | $39.20 | DIG-BXPA1 |   
                  | LocoNet 
                    Occupancy Detector, 8 Detection Sections with Transponding 
                    and Power Management 
 |  | $180.00 | $144.00 | DIG-BXP88 |   
                  | LT5C Tester Modules |  | $15.00 | $12.00 | DIG-LT5C |  |