Fosworks OMNI Tx-3 - User Manual

You no longer need that big transmitter anymore! The programmable OMNI Tx-3 Servo
handheld transmitter will control your garden railway live steam locomotives perfectly
from the palm of your hand. An Omni Rx-3 or Rx23 receiver with be needed to work
with the OMNI Tx-3 transmitter.
2.4GHz gives perfect glitch free control for up to 800 metres range.
Four servos can be controlled from an OMNI Tx-3 Servo Transmitter. One infinitely var-
iable and two with stop positions. Cruise control is possible by turning off the transmitter
while the train is running. Turn back on to instantly regain control.
Black Push Buttons 1. 2 . and 3
Buttons 1 and 2 control Servo 3. Button 3 controls Servo 4 and BIND
Press button 3 and Servo 4 swings from left to
right. Release and the arm swings back. Excel-
lent for operating whistles and couplings etc.
Buttons 1,2 and 3 are also employed in re-
programming the transmitter
Press 1 and the servo moves to the left.
Press again and it returns to centre.
Press button 2 for Right movement
and again for centre. Very good for
Operating Forwards and reverse
Rx-23 receiver circuit diagram for use with four Servos.
Programmable Three Servo Operation
S1 infinitely variable. S3 three position,S4 two position
2.4GHz Technology by Timpdon
Requires an OMNI Rx-3 or Rx23 receiver.
Up to 800 metres range
Telemetry feedback to the handset on LED 2,
ideal for monitoring boiler water level in conjunction
With STM-118 Locosaver
OMNI Tx-3 Servo 2.4GHz Handheld Transmitter
2 x AAA
Battery box
ON/OFF
Slide switch
Slide down for ON
More Info
For more information
see overleaf
With Alkaline batteries
approx 100 hours of
continuous use is
possible.
S1
Servo 1
Infinitely variable
servo movement
(Regulator)
Rx-23
OMNI Tx-3 Servo
Programmable 2.4GHz Transmitter
For Live Steam Locos
Another
PETER SPOERER
PRODUCT MADE BY
P.O.Box 675,
Blackburn, Lancs.
BB2 9QJ
UK
WWW.FOSWORKS.CO.UK
Tel 0(44)1254 814675
LED indicators
LED 1 -power
LED 2 -telemetry (see below)
Both LED’s flash when
battery low and are both
used during calibration and
binding
Telemetry - by default, telemetry (i.e. feedback from the receiver to the handset) is not acti-
vated to give a longer battery life. If it is required, then it must be activated with the following
procedure: Turn Transmitter OFF, Hold down buttons 1,2, and 3. Turn on transmitter and keep
holding down all three buttons until LED2 goes on. Release all buttons. It is now active and
LED2 will illuminate whenever the telemetry input on the FRx23 is grounded.
To de-activate, use the same procedure.

Summary

OMNI Tx-3 Servo Programmable 2.4 GHz Transmitter For Live Steam Locos

Control Buttons and Indicators

Details on push buttons for servo control, ON/OFF switch, and LED status lights.

S1 Servo 1 Operation

Describes the function of the S1 knob for infinitely variable servo movement.

Telemetry Functionality

Explains how to activate and interpret telemetry feedback from the receiver.

Binding Procedure

Low Battery Warning

System Re-Programming

Calibrating Servo Positions

Guide for adjusting servo start, mid, and end positions independently.

Momentary or Latching Mode

Procedure for setting servo 3 and 4 to momentary or latching operation.

Overview

1. Function Description
2. Technical Specifications
3. Usage Features
4. Controls
5. LED Indicators
6. Binding Procedure
7. Calibration of Servo Start, Mid, and End Positions
8. Reprogramming Servo 3 and 4 to Momentary or Latching Mode
9. Telemetry Feature
10. Maintenance Features

The OMNI Tx-3 Servo is a programmable 2.4GHz handheld transmitter designed for controlling live steam locomotives in garden railways. It offers glitch-free control with a range of up to 800 meters. This transmitter requires an OMNI Rx-3 or Rx23 receiver to function.

Function Description:

The OMNI Tx-3 Servo transmitter can control up to four servos. Servo 1 offers infinitely variable movement, while Servos 3 and 4 have stop positions. A unique feature is the ability to enable cruise control by turning off the transmitter while the train is running, and then instantly regaining control by turning it back on.

Technical Specifications:

• Operating Frequency: 2.4GHz
• Range: Up to 800 meters
• Servo Control: 4 servos (1 infinitely variable, 2 with stop positions)
• Power Source: 2 x AAA batteries
• Battery Life: Approximately 100 hours of continuous use with alkaline batteries
• Receiver Compatibility: OMNI Rx-3 or Rx23 receiver

Usage Features:

Controls:

• S1 Knob (Regulator): Controls Servo 1 with infinitely variable movement. Also used for setting servo start/end positions during calibration and for setting momentary/latching modes for Servos 3 and 4.
• Black Push Buttons 1, 2, and 3:
  • Buttons 1 and 2: Control Servo 3. Pressing button 1 moves Servo 3 to the left; pressing again returns it to center. Pressing button 2 moves Servo 3 to the right; pressing again returns it to center. This is ideal for operating forwards and reverse.
  • Button 3: Controls Servo 4. Pressing button 3 swings Servo 4 from left to right; releasing returns it to the center. This is useful for operating whistles, couplings, etc.
  • Buttons 1, 2, and 3 (combined): Used for reprogramming the transmitter and for binding.
• ON/OFF Slide Switch: Located on the side; slide down for ON.

LED Indicators:

• LED 1 (Power): Indicates power status.
• LED 2 (Telemetry): Indicates telemetry feedback (when activated) and is also used during calibration and binding.
• Low Battery Warning: Both LED 1 and LED 2 flash when battery power is low.
• Calibration and Binding: Both LEDs flash during these procedures.

Binding Procedure:

1. Turn on the receiver (or the model).
2. Hold down black buttons 1 and 3 on the transmitter.
3. Turn on the transmitter while still holding buttons 1 and 3.
4. Successful binding is indicated by LED 2 going solid ON.
5. Release the two buttons. LED 1 will go solid to indicate that the transmitter and receiver are linked.

Calibration of Servo Start, Mid, and End Positions:

This procedure allows independent adjustment of the start and end settings for each servo. The S1 knob is used for all four servo settings. The transmitter and receiver must be bound and tested beforehand. This procedure must be carried out within 20 seconds of turning on the receiver.

1. Ensure everything is off, then power up the receiver.
2. Press and hold buttons 2 and 3, then turn the transmitter ON.
3. Wait until both LEDs go solid, then release the buttons. You are now in calibration mode. The only exit is to power off the transmitter.
4. LED 1 will flash, indicating the selected SERVO. Use Button 1 to move to the next servo.
5. LED 2 will indicate which servo position you wish to set. Use Button 2 to move to the next one:
   • One flash = Start position of servo swing (knob fully anticlockwise).
   • Two flashes = Mid position of servo swing (not available on Servos 1, 2, and 4).
   • Three flashes = End position of servo swing (knob fully clockwise).
6. Once the servo and position are selected, use the S1 knob to set the actual position of the servo arm.
7. Press Button 3 to save the position.
8. You can continue to set more positions or exit by turning off the transmitter and then back on to check the results.

Reprogramming Servo 3 and 4 to Momentary or Latching Mode:

This procedure allows you to change the operational mode of Servos 3 and 4.

• Servo 3 (Latching): Toggles between mid and end positions with buttons 1 and 2.
• Servo 3 (Momentary): Moves from mid to start with button 1 and mid to end with button 2, then returns to the middle.
• Servo 4 (Latching): Toggles position from one end to the other with each press of button 3.
• Servo 4 (Momentary): Moves from start to end position and back again. This procedure must be carried out within 20 seconds of turning on the receiver.

1. Ensure everything is off, then power up the receiver.
2. Press and hold buttons 1 and 2, then turn the transmitter ON.
3. Wait until both LEDs go solid, then release the buttons. You are now in calibration mode. The only exit is to power off the transmitter.
4. LED 2 will indicate which servo is being set: one flash for SERVO 3 and two flashes for SERVO 4. Use Button 2 to move to the next one.
5. Set the S1 (Regulator) knob to fully anticlockwise for Momentary mode or fully clockwise for Latching mode.
6. Press Button 3 to save this setting.
7. Proceed with further settings or power off the transmitter to leave the procedure.

Telemetry Feature:

By default, telemetry (feedback from the receiver to the handset) is deactivated to conserve battery life. To activate it:

1. Turn the transmitter OFF.
2. Hold down buttons 1, 2, and 3.
3. Turn the transmitter ON while still holding all three buttons.
4. Keep holding until LED 2 goes on.
5. Release all buttons. Telemetry is now active, and LED 2 will illuminate whenever the telemetry input on the FRx23 is grounded (e.g., for monitoring boiler water level). To deactivate telemetry, use the same procedure.

Maintenance Features:

• Battery Replacement: When both LED 1 and 2 start flashing, the batteries are low. Replace them with quality alkaline AAA cells for optimal performance.
• Reprogramming the OMNI System: The OMNI R/C system allows reprogramming of the receiver (not the transmitter) to suit specific locomotive needs. This means one OMNI Tx-3 transmitter can control multiple Live Steam locos, each with its own settings. Servo movements (start and stop positions) can be adjusted, and servo swings can be reversed by setting the first position as the end and the second as the start.

For further advice, contact sales@fosworks.co.uk or call 01254 814675.

Fosworks OMNI Tx-3 Specifications

General

Brand	Fosworks
Model	OMNI Tx-3
Category	Transmitter
Language	English