Frsky XHT User Manual

Instruction Manual for FrSky XHT Module

Introduction

Thank you for purchasing FrSky XHT telemetry module.In order to fully enjoy the benefits of this system, please
read the instruction manual carefully and set up the device as described below.

Overview

Smart Port

Mode and Compatibility

Switch 1

Specifications

●

Operating Voltage Range: 6~15V

●

Operating Current: 140mA(@6V), 80mA (@12V)

●

Output Power: ≤ 100mW

●

Modulations: PXX or CPPM (auto-detected)

●

Modes: D8, D16 or LR12 (selectable)

●

Telemetry Interface: Smart Port

What’s New!

●

Two auto-detected modulations of PXX (mode selection, bind, model match, range check, failsafe, etc. on radio
side) or CPPM.

●

Three selectable modes of D8 (existing 8ch two-way), D16 (new 16ch two-way full duplex transmission) and
LR12 (new 12ch one-way long range).

●

Smart Port enabled, realizing two-way full duplex transmission.

●

Detect the module antenna’s working status and give sound warnings if the module antenna is broken or does
not have intact contact, etc.

●

Super lower latency (approx. 1/3 of current systems) and higher precision (transmitter’s hardware and software
support required, such as FrSky transmitters).

ON

OFF

OFF

ON

Switch 2

OFF

OFF

ON

ON

Mode of XHT

D8

D16

LR12

Not Defined

LED Indication

●

●

●

●

●

Compatible Receiver

V8-II series receivers

(V8FR-II,V8R7-II,V84R-II,VD5M,etc.)

(D8R-II plus,D8R-XP,D6FR,D4R-II,etc.)

Green LED

Flashing

Flashing

Upgrade Interface: Smart Port

D series receiver

X series receiver (X8R,X4R,etc.)

L series receiver (L9R,etc.)

/

ON

RED LED

ON

OFF

Flashing

Status

Normal

Range Check

Binding

Version

1.0

Smart Port (S. Port) is a signal wire full duplex digital transmission interface developed by
FrSky Electronic Co., Ltd. All products enabled with Smart Port (including XHT module, X8R receiver, new
hub-less sensors, new Smart Dashboard,etc), serial port user data and other user input/ output devices
can be connected without limitations for numbers or sequences at a high transmission speed.

FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: [e-mail]
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: [e-mail]

01140133

Instruction Manual for FrSky XHT Module

Version

1.0

Binding Procedure

Binding is the process of uniquely associating a particular receiver to a transmitter module. A transmitter module can
be bound to multiple receivers (not to be used simultaneously). A receiver can only be bound to one transmitter
module. Follow the steps below to finish the binding procedure.

1. Turn on the transmitter while holding the F/S button on the XHT module (see Mode and Compatibility table
above). Release the button. The RED LED on the XHT module will flash and GREEN LED ON , indicating the
transmitter is ready to bind to the receiver.

2. Connect the battery to the receiver while holding the F/S button on the receiver. The RED LED on the receiver
will flash, indicating the binding process is completed (please refer to the corresponding receiver’s instruction
manual for details).

3. Turn off both the transmitter and the receiver.

4. Turn on the transmitter and connect the battery. The GREEN LED on the receiver indicates the receiver is
receiving commands from the transmitter. The receiver/transmitter module binding will not have to be repeated,
unless one of the two is replaced.

Note: After binding procedure is completed, recycle the power and check if the receiver is really
under control by linked transmitter.

Range Check

A pre-flight range check should be done before each flying session. Reflections from nearby metal fences, concrete
buildings or tress can cause loss of signal both during range check and during the flight.
Follow the steps below to perform the range check.

1. Place the model at least 60cm (two feet) above non-metal contaminated ground (e.g. on a wooden bench).

2. The receiver antennas should be separated in the model, and do not touch the ground.

3. The module antenna should be in a vertical position.

4. Turn on the transmitter and the receiver, press the F/S button on the XHT module for 4 seconds to enter range
check mode, the RED LED will be off, GREEN LED will flash rapidly. The effective distance will be decreased to 1/30
of full range.

5. Walk away from the model while simultaneously operating the controls on the transmitter to confirm all controls’

normal operation.(please refer to the corresponding receiver’s instruction manual for details).

6. Press the F/S button on the XHT module for 1~2seconds to exit range check mode, RED LED will be back on,
indicating normal operation is back.

Safe Flying Distance

FrSky telemetry system has a feature to return the Received Signal Strength Indication (RSSI) of the receiver to the
transmitter. The transmitter develops an internal voltage representing the receiver signal strength. Alarms are
programmed in the transmitter to warn the pilot when the model is nearing maximum control range. See the table
below for reference.

Number Beep Alarming Meaning

0

1

2

3

/

FrSky is continuously adding features and improvements to our products. To get the most from your product, please check
the download section of the FrSky website www.frsky-rc.com for the latest update firmware and manuals

FrSky Electronic Co., Ltd. www.frsky-rc.com Contact us: [e-mail]
Add: F-4,Building C, Zhongxiu Technology Park, No.3 Yuanxi Road, Wuxi, 214125, Jiangsu, China Technical Support: [e-mail]

No Beep

Single Beep

Constant double Beeps

Constant triple Beeps

Constant Beeps

The module antenna is broken, or does not have intact contact, etc.

01140133

The signal strength is strong

The signal strength is adequate

The model is far, but safe range

The model in near maximum range