Digitrax DSXSV9 User manual

© 2021 Digitrax, Inc. www.digitrax.com— 1 —
Features:
▪Mini 9G servo for turnout control, compatible with Digitrax DS78V decoder.
▪Includes compact under layout mount bracket, allowing ~1.8" mount depth.
▪Includes both 0.6mm and 0.8mm z-bend formed actuator drive-wires.
▪Adjustable; slew range with horn arm holes, and angle oset on shaft spline.
▪Includes 5/16" mount screws, actuator horns and servo hardware.
Parts List
1 DSXSV9 9G servo 2 z-bend actuator drive-wire sizes
1 Instruction Sheet 1 9G Mount, screws and horn arm pack
1.0 Servo Mount Assembly
1. Place the DSXSV9 servo without horn arm on the rear side of the mount
bracket with the wires away from the mount top, as shown in gure 1 . Use
two larger head 1/4" long screws from horn arm hardware bag to attach
servo to mount.
2. Drive the DSXSV9 to its center
position by e.g. plugging into a
powered DS78V in Adjustment
mode centering state. See DS78V
manual section 2.0.
3. Poke through the z-bend end of
e.g. thin 0.6mm drive-wire into
the outer hole of the short horn
arm, then place the wire free tip
through the center pivot hole in
the plastic mount base, as shown
in gure 1.
4. To mechanically center; align
horn arm end pointing at the ser-
vo cable on the centerline, then
gently press horn center onto
the servo shaft spline. Use the
DS78V to then conrm that the
DSXSV9 now has almost sym-
metric Thrown (clockwise or CW)
and Closed (CCW) angles from
centerline. In e.g. the Thrown
position shown, use the small 5/32" long screw to lock the horn arm center
down to the shaft with this approximate mechanical center position.
5. Drive the servo back to centered position, so it is aligned and can be un-
plugged and later installed on the layout with drive-wire centered under the
turnout throw-bar drive hole, with aid of the base-template. Do not drive the
horn arm manually, as this will damage gears. For dry indoor use only.
DSXSV9
Complete Train Control
Run Your Trains, Not Your Track!
drive-wire, up
to throw-bar
drive hole
Figure 1.
servo cable, on centerline
upper
1/4" servo
mount
screw tip
9G servo
body, insert
from mount
rear side
short horn
arm: shown
in servo
Thrown/CW
position
horn arm
retain screw
center pivot hole
z-bend
through
outer arm
hole
Mount top: face
towards layout
underside. 4
mount slots to
align/attach.
Digitrax
9G mount
bracket
front
9G Turnout or motion control servo, with
mount bracket and installation hardware
Clamp holes
for optional
remote actu-
ator cables

© 2021 Digitrax, Inc. www.digitrax.com— 2 —
2.0 DSXSV9 suggested Layout Installation
1. The servo arm moves the drive-wire through the turnout throw-bar hole
using an approx 1/2" access clearance hole or slot through the layout base
material, centered under the throw-bar drive hole. Use base-template below.
2. Pass the free end of the drive-wire through the access hole and then through
the throw-bar center hole. There will be excess drive-wire tip to trim later.
3. Align the servo mount so that the drive-wire will move in the throw-bar ac-
tuation direction. Set mount orientation so Thrown/ Clockwise horn rotation
will drive the throw-bar to the diverging or Thrown turnout direction .
4. Use two 5/16" long mount screws to hold the unit when in the correct posi-
tion. There are mount slots for up to 4 mounting screws and the slots allow
some ne position and orientation adjustments using screw pairs.
5. Connect the servo to a DS78V and drive to Thrown and Closed positions and
observe the turnout throw-bar moves as needed.
6. In the Thrown or Closed position, using eye protection, carefully trim the
drive-wire tip just below the rail tops, so as not to catch on any rolling stock.
7. With the drive-wire using the outermost horn arm hole, there will be about
+/- 0.25" of travel at a throw-bar oset of about 1" from the servo mount.
This will be ne for most HO and N scale turnouts and layout base material
depths. Any excess drive angle using the 0.6mm wire will provide com-
pliance and some spring tension on the rails. The heavier 0.8mm wire will
provide even more spring pressure, and not be required in most cases.
8. Always ensure at extreme T/C angles that the horn arm does not bind to
make servo jam ON. This may damage servo and is not covered under war-
ranty.
These steps are some of many possible methods to install the DSXSV9, and user
skills will allow many variations of these broad steps.
3.0 Warranty & Repair
Digitrax gives a 90 day Warranty against material and manufacturing defects on
the DSXSV9. Visit www.digitrax.com for instructions for returning items for re-
pair. 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 specications, and/or to
make additions or improvements in its products without imposing any obligations upon
itself to install these changes, additions or improvements on products previously manufac-
tured. 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.
2443 Transmitter Road
Panama City, FL 32404
www.digitrax.com
307-DSXSV9-0000
Need Support? helpdesk.digitrax.com
DSXSV9 Mount base-template
center pivot hole,
for no drive oset
1 of 4 mount slots for
5/16" long screws