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© 2021 Digitrax, Inc.

www.digitrax.com

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8.0 Warranty & Repair

Digitrax gives a one year Warranty against material and manufacturing defects 

on the DS78V.
Visit www.digitrax.com for instructions for  

returning items for repair.  Please return 

warranty items directly to Digitrax - 

DO NOT return items to place of purchase. 

Digitrax, Inc. reserves the right to make changes 

in design and specifications, and/or to make addi-

tions or improvements in its products without im-

posing any obligations upon itself to install these 

changes, additions or improvements on products 

previously manufactured.  IPL capable products 

like the DS78V & DT602 may be user updated 

with the latest IPL files that are available for free 

on the product specific information pages of the  

www.digitrax.com web site. The newest features 

are documented on the product pages of the 

website.

Digitrax, Inc. is not responsible for unintentional 

errors or omissions in this document.

 

ally each control 8 individual OPSW bits. OPSW1 is ls bit of CV11, through 

OPSW8, as ms bit of CV11.

5.  The DT602 does not indicate to the DS78V when programming is complete. 

After finishing CV changes, best practice is to POWER cycle the DS78V to 

save changes.  Alternately, you can WRITE CV7 to 00 to restart that DS78V.

7.0  Set up Notes:   

1.  The DS78V manages servo supply voltages at 5V.  

2.  In all output modes a 300mA /12 to 14V DC supply should suffice.

3.  Using DigiIPL II version 2.9.1 or later on a PC will display a Sub-version 

number that confirms the last downloaded IPL/update#, since the DS78V 

does not have a LCD display to show this last IPL download info 

4.  The OTA and OTB screw terminals are connected to TKA and TKB wires and 

allow DCC track feed wires to daisy-chain between multiple DS78V's.

5.  A connected DSXCP1 will flash red/green while its servo is moving.

Regulatory Information 

Declaration of Conformity: “This device complies with part 15 of the 

FCC Rules for a Class B digital device. Operation is subject to the following two conditions: (1) 

This device may not cause harmful interference, and (2) this device must accept any interference 

received, including interference that may cause undesired operation.”

These limits are designed to provide reasonable protection against harmful interference in a residen-

tial installation. This equipment generates uses and can radiate radio frequency energy and, if not 

installed and used in accordance with the instructions, may cause harmful interference to radio com-

munications. However, there is no guarantee that interference will not occur in a particular installa-

tion. If this equipment does cause harmful interference to radio or television reception, which can 

be determined by turning the equipment off and on, the user is encouraged to try to correct the inter-

ference by one of the following measures: Reorient or relocate the receiving antenna. Increase the 

separation between the equipment and receiver. Connect the equipment into an outlet on a circuit 

different from that to which the receiver is connected. Consult the dealer or an experienced radio/

TV technician for help

307-DS78V

-0000

2443 Transmitter Road 
Panama City, FL 32404 

www.digitrax.com

 

Need Support?

helpdesk.digitrax.com

Made in the USA

Summary of Contents for DS78V

Page 1: ...wered the green ID LED should light and will briefly wink OFF every 2 secs as a product heartbeat showing the DS78V is opera tional Alternatively power from DCC feeder wires to the TKA B terminals 3 Plug in an active LocoNet to a DS78V RJ12 connector The red OPS LED will light up showing connection Any good LocoNet message seen will cause the DS78V OPS LED to blink OFF briefly With no LocoNet the ...

Page 2: ...ckwise angle for T semaphore STOP RED and full Counter Clockwise for C semaphore CLEAR GREEN as viewed from the arm end of the servo 6 A switch command at Base SW 1 will drive Servo1 to the mid angle or Ap proach position semaphore APPROACH YELLOW for either T or C 7 In this way each servo responds to a consecutive pair of switch commands the first SW as T C and the SW 1 for the Approach setting F...

Page 3: ...om a LocoNet throttle connected PC or DCC track 1 Press and hold the RTS button for about 3 seconds and the ID and OPSW LEDs will blink alternately to show one Route can be set up Release the RTS button 2 Select a switch address on your throttle between 1 and 16 and issue the command direction for Closed This will now be the Route Number you are going to setup Any previous Entries in this Route wi...

Page 4: ...re Input lines The DS78V has sixteen external hardware control lines on two SWITCH SEN SOR IN 10 pin PCB headers using plug in 10 pin ribbon cables The 6 Factory ribbon cable pin 1 edge should be on the right side when plugged in as shown in Figure 1 With Gray cable the red stripe is pin 1 edge and for 10 color cable pin 1 is BROWN with wire colors shown in Tables 2 and 3 If you use these external...

Page 5: ...utput2 is SW11 and the DS message will be Block 11 OCCUPIED 4 A disconnected SENS line will report as UNOCCUPIED 5 The BD4N does not plug directly into a 10 pin header and will not operate Connect the 5 wires used by the BD4N by name via a terminal strip More conveniently you may connect the BD4N through one of two plugged in DSXC4 boards with ribbon cables for true plug and play connectivity This...

Page 6: ... SW pairs instead of 8 T C SW turnout controls 4 The 4th DS78V at Base Sw25 overlaps the 3rd DS78V and so the 3rd SW base is dis played in RED text since SW17 16 would require the 4th DS78V SN9945 to have a base address of at least Sw33 to avoid SW overlaps It shows just SW25 5 Rotate the DT602 LH encoder knob to underline the 4th DS78V line entry after the RED collision marked 3rd DS78V 6 Press t...

Page 7: ...ure to press the Save soft key to update this DS78V Route to non volatile memory Press X to exit 6 With LocoNet connected DS78V routes have System wide control ability 6 3 Programming DS78V CVs on LocoNet As for section 6 0 with a suitable DT602 press the Menu 2 1 keys to enter Operations Mode programming 1 Press the F SWITCH soft key to enter the Ops Switch mode program ming screen as shown adjac...

Page 8: ...aded IPL update since the DS78V does not have a LCD display to show this last IPL download info 4 The OTA and OTB screw terminals are connected to TKA and TKB wires and allow DCC track feed wires to daisy chain between multiple DS78V s 5 A connected DSXCP1 will flash red green while its servo is moving Regulatory Information Declaration of Conformity This device complies with part 15 of the FCC Ru...

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