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Features:

DCC Occupancy Detection supports up to 8 Detection Sections letting you

know when equipped rolling stock is in a detection section on your layout.

One Transponding Zone per Detection Section lets you know the location of

transponder-equipped locos or rolling stock.

Intelligent  Automatic  short-circuit and over-current  power management

for each Detection Section, improves reliability by avoiding most booster

shutdowns.

Connects to LocoNet to transmit Detection Section occupancy, Transponding

and track power information.

Detects any powered locomotives in a Detection Section.

Detects rolling stock equipped with resistor wheel sets.

Identify where specific rolling stock is on your layout with Digitrax transpon

-

der-equipped locos and rolling stock.

Plug and Play with Digitrax DCC systems with automatic Railsync polarity

detection.

LED output headers for front panel indication of Detection Section occupancy,

Transponding, and power status.

Easy-connect pluggable track wire terminal blocks can plug-in straight or at

right angles.

3 Amp capacity per Detection Section , 8 Amp total unit capacity.

Automatically updates status at track power on.

Operations Mode Read Back allows you to read CV values of decoders

equipped with transponders when on track.

Firmware update capability via IPL over LocoNet.

Parts List

1 BXP88 

     1 LT5 Tester 

1 Instruction Manual

Digitrax Manuals and Instructions are updated periodically.   

Please visit www.digitrax.com for the latest version of all manuals.

Complete Train Control

Run Your Trains, Not Your Track!

All Scales

LocoNet DCC Occupancy Detector with Transponding 
and Power Management for 8 Detection Sections, 
Transponding Zones, and Power Sub-Districts

BXP88

Summary of Contents for BXP88

Page 1: ...ipped locos and rolling stock Plug and Play with Digitrax DCC systems with automatic Railsync polarity detection LED output headers for front panel indication of Detection Section occupancy Transponding and power status Easy connect pluggable track wire terminal blocks can plug in straight or at right angles 3 Amp capacity per Detection Section 8 Amp total unit capacity Automatically updates statu...

Page 2: ...r current power management This allows for more reliable layout operations by preempting most booster shutdowns On your Digitrax system the BXP88 reports detection section occupancy transponding and track power status to the system via its LocoNet connection This makes occupancy and transponding information available for use by any LocoNet device hooked up to LocoNet For instance the information c...

Page 3: ...a loco or other specially equipped cars in that section of track and identify transponding equipped locos and rolling stock Traditionally with BDL168 RX4 combinations Detection sections could be combined inside Transponding Zones With the BXP88 each of its 8 Detection Sections act as both an occupancy and transponding detector For simplicity these sections will be referred to as Detection Sections...

Page 4: ...ue layout with the number and length of a detection sections varying depending on your layout train length and the purpose of the detection transponding The BXP88 provides Detection Tran sponding and Power Management in each of its 8 detection sections you should consider if every section on your layout needs these features Transponding is often not needed in all detection sections of your layout ...

Page 5: ...d as needed to match existing wiring the BXP88 automati cally sets railsync An LT5 tester is included with the BXP88 and optional fascia LED panels can be constructed following the instructions in section 10 3 The BXP88 does not need to be externally powered An optional auxiliary 9V 150ma DC power supply may be used to allow the BXP88 to remain on when track power is lost Multiple BXP88s can be po...

Page 6: ...using a known good LocoNet Cable 10 Connect optional auxiliary 9V 150ma DC power supply using the power barrel plug connector See Figure 1 BXP88 Installation Example for a typical installation 6 0 Turning on your system and configuring the BXP88 Once you have installed your BXP88 you may turn on your system There are several tests you can perform to ensure that the BXP88 is properly functioning 1 ...

Page 7: ...RUN OP SLEEP SCALE O G N HO P A G R P B R B R A 5A LOCO RESET 8A Detection Section 1 Detection Section 2 Detection Section 3 Detection Section 4 Detection Section 5 Detection Section 6 Detection Section 7 Detection Section 8 Figure 1 BXP88 Installation Example General Return LocoNet to other devices LT5 LED connectors DS5 DS8 LT5 LED connectors DS1 DS4 Common Rail A Isolated Rail B detection secti...

Page 8: ...hold the ID button for approximately 4 seconds until the ID LED flashes red then release it The ID LED will flash alternating red and green This let s you know that you are in board address set up mode 3 Connect a Digitrax throttle to the BXP88s LocoNet port This can only be done with a Digitrax LocoNet throttle or equivalent software 4 Go into SWITCH mode on the throttle Select the switch number ...

Page 9: ...e set up as desired press the OPS button for about 2 seconds and release it the BXP88 will exit option switch set up mode Option Switch Function Default OpSw 04 c slower short circuit detection t normal short circuit detection t Opsw 05 c transponding enabled t transponding disabled c OpSw 07 c disable fast find t enable fast find t OpSw 10 c enable power manager t disable power manager c Opsw 11 ...

Page 10: ...ransponding reporting for Detections Section 2 t Opsw 53 c disable transponding reporting for Detection Section 3 t enable transponding reporting for Detections Section 3 t Opsw 54 c disable transponding reporting for Detection Section 4 t enable transponding reporting for Detections Section 4 t Opsw 55 c disable transponding reporting for Detection Section 5 t enable transponding reporting for De...

Page 11: ...ection section power state and fault information for setup debug and running This will help you with layout wiring and troubleshooting for transpon ding detection LT5 Indications Meaning Detection Section LED on Solid Detection Section is Occupied Detection Section LED is Blinking Slow Detection Section is Occupied and Tran sponding Detection Section LED is Blinking Fast Detection Section is in Sh...

Page 12: ... to about 1 3mA If you need higher LED drive currents you can use external transistors etc to amplify the LED current The LT5 header drive from the BXP88 is active high at about 3 5 volts via a 1 Kohm resistor Note that the ribbon cable includes separate ground return conductors for each LED that allow a 10 conductor ribbon cable to be split into 5 pairs to conveniently routed to individual LEDS B...

Page 13: ...ay transponding works Notes If the resistor is not connected between the blue white F0F leads then the locomotive will transpond in only one orientation on the track If you are using a DH126D DH166D TD 1 or TL 1 to equip your loco or rolling stock for transponding you won t need to install the resistor because it is already included in the decoder 3 Enable transponding in the transponder equipped ...

Page 14: ... 1 Use transponder capable decoder set up with a 470 ohm resistor between the blue and white leads This removes any lamp issues from initial transpon ding tests The motor leads can be left unconnected insulated and all other leads except the red black track connections should be insulated Set CV61 to a value of 02 to enable transponding 2 Ensure the BXP88 is properly connected to your Command Stat...

Page 15: ... outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Note Any modifications to the equipment not expressly approved by Digitrax voids the user s warranty and compliance with CFR 47 rules as administered by the Federal Communication Commission Digitrax believes any properly installed equipment following guideli...

Page 16: ...r Road Panama City FL 32404 www digitrax com Need Support helpdesk digitrax com BXP88 LocoNet DCC Occupancy Detector with Transponding and Power Management Made in the USA TM Part 15 Class B RFI Compliant 307 7008 000 ...

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