Spektrum DX8e User Manual (English)

Questions and Answers:

A
Angela JohnsonJul 31, 2025
Why will my Spektrum DX8e not bind to the aircraft?
- B
  Brent ThompsonJul 31, 2025
  If your Spektrum transmitter won't bind to the aircraft, there are several potential causes. The transmitter might be too close to the aircraft during the binding process; move them a few feet apart and disconnect and reconnect the flight battery. Large metal objects nearby can also interfere, so move the aircraft or transmitter away from any large metal objects. Ensure the bind plug is correctly installed in the bind port to bind the aircraft to the transmitter. Low battery charge in either the flight or transmitter battery can prevent binding, so replace or recharge the batteries. Finally, if you're using a DX8e EU version transmitter, it's not compatible with DSM2 receivers.
B
batesmonicaAug 5, 2025
What to do if my Spektrum receiver goes into failsafe mode a short distance away from the transmitter?
- A
  Amber ReyesAug 5, 2025
  If your receiver enters failsafe mode close to the transmitter, check the receiver antenna for any cuts or damage. Replace the antenna or contact Horizon Product Support. Also, ensure that the main and remote receivers are installed at least 2 inches (51mm) apart.
A
Amanda LesterAug 9, 2025
What to do if my Spektrum receiver quits responding during operation?
- T
  Thomas JohnsonAug 9, 2025
  If the receiver stops responding during operation, it could be due to low battery voltage, so completely recharge the flight battery. Check the wires and connectors between the battery and receiver for any looseness or damage. Repair or replace any faulty wires or connectors.
L
lydia36Aug 13, 2025
What to do if the Spektrum receiver slowly blinking at landing (DSM2 Only)?
- T
  tammy35Aug 13, 2025
  If the receiver is slowly blinking upon landing (DSM2 Only), it could be due to a loss of power to the receiver during the flight, so check the battery voltage. It can also happen if the system was powered on and connected, then the receiver was powered off without powering off the transmitter. Power off the transmitter when the receiver is powered off.
B
Brian PowersAug 17, 2025
Why does my Spektrum receiver lose its bind?
- N
  Nancy WashingtonAug 17, 2025
  The receiver may lose its bind if the bind button was pressed before the transmitter was powered on. Rebind by performing the binding instructions.
M
melissamartinezAug 22, 2025
What to do if Flight log registers undesirable number of fades, losses or holds or aircraft responds irregularly to controls with Spektrum DX8e?
- S
  Scott SmithAug 22, 2025
  If the flight log shows an undesirable number of fades, losses, or holds, or the aircraft responds irregularly, it could be due to poor signal reception. Reposition the remote receivers to improve the RF signal path diversity. Another potential cause is electronic feedback, so check for and stop any feedback from servos or motor systems to the ESC or receiver. Low power can also be a factor; check the aircraft's power draw and increase battery power, or decrease the power demand by installed systems. Ensure all aircraft batteries are fully charged and that the installed BEC for an electric aircraft is adequate for the power demand.

Spektrum DX8e Specifications

General

Modulation	DSM2, DSMX
Proper use	Airplane, Aircraft
Product type	Remote control
Product color	Black
Frequency band	2.4 GHz
Channels quantity	8 channels
Brand compatibility	Spektrum
Compatible memory cards	SD
Number of memory records	250
Display type	LCD
Built-in display	Yes
Battery type	AA
Number of batteries supported	4

Summary

Battery and Charging Precautions

Transmitter Functions Overview

Powering the DX8e On and Off

Main Screen and Navigation

SD Card Functions

Update Spektrum AirWare Software

Instructions for updating the transmitter's firmware using an SD card, including automatic and manual methods.

Binding Procedures

Receiver Power System Requirements

Recommended Power System Test Guidelines

Programming Failsafe Positions

SmartSafe Failsafe

Describes SmartSafe failsafe technology which acts only on the throttle channel to prevent arming or motor operation.

Hold Last Command

Preset Failsafe

Model Type Programming Guide

System Setup

Model Select and Direct Model Access

How to access and manage the 250 internal model memory locations, including adding new models.

Model Type Selection

Guide to selecting model types (Airplane, Helicopter, Sailplane, Multirotor) and consequences of changing type.

F-Mode Setup

Channel Assignment

Channel Input Configuration

Trim Setup

Model Utilities

Functions for creating, deleting, copying, resetting, and sorting model memories.

Create New Model

Delete Model

Copy Model

Model Reset

Telemetry Settings

Configuring telemetry display options (Tele, Main, Roller, Auto) and units (US/Metric).

Telemetry Auto-Configuration

AS3X Gain Live View

Real-time display and adjustment of AS3X gain values for Roll, Pitch, and Yaw in ACRO and SAIL modes.

Preflight Setup

Programming a pre-flight checklist that appears each time the transmitter is powered on.

Frame Rate and Modulation Mode

Binding Function

Enables transmitter-receiver binding without powering off the transmitter, useful for failsafe setup.

Wireless Trainer Setup

Configuring the wireless trainer function to bind a slave transmitter to the master transmitter.

Programmable Master and Pilot Link Master

Modes for master transmitter control transfer to slave transmitters, ideal for training or complex models.

Master Override

Digital Switch Setup

System Settings Menu

Accessing sub-menus for User Name, Contrast, Backlight, Mode, and Battery Alarm settings.

Mode and Battery Alarm Settings

Changing transmitter gimbal stick modes and configuring battery type and low voltage alarm limits.

Serial Number and Software Version

Calibrating the Transmitter

Mandatory procedure to calibrate potentiometer endpoints after changing stick mode for accurate control.

Transfer SD Card Functions

Managing models by importing from or exporting to an SD card, including importing/exporting all models.

Import and Export Models

Detailed steps for importing individual models or all models from/to an SD card, including re-binding requirements.

Update AirWare Software

Information on updating the transmitter's AirWare software, with warnings about powering off during installation.

Automatically Installing AirWare Software Updates

Manually Installing AirWare Software Updates

Function List Overview

Servo Setup: Travel Adjust, Sub-Trim, Reverse

Adjusting servo endpoints (Travel Adjust), center point (Sub-Trim), and direction (Reverse) for precise control.

Servo Setup: Speed and Balance

AS3X Gain Live View (ACRO/SAIL)

Real-time display and adjustment of AS3X gain values for Roll, Pitch, and Yaw, accessible via telemetry screen.

Dual Rates & Exponential

Adjusting control response sensitivity (Dual Rates) and center response (Exponential) for Aileron, Elevator, Rudder.

Differential (ACRO/SAIL)

Throttle Cut (ACRO/HELI)

Assigning a switch position to stop the engine or motor, activating regardless of flight mode.

Throttle Curve (ACRO/HELI)

Mixing Functions

Allows control input for one channel to affect multiple channels, supporting various programmed mixes.

Assigning a Mix to a Switch

Back Mixing

Range Test

Reduces transmitter power output for range testing to confirm RF link operation before flying.

Timer Functions

Telemetry Access

Monitor Screen

ACRO (AIRPLANE) Setup

Aircraft Type Selection

Selecting wing and tail types to match the airplane model for correct control surface programming.

Elevon Servo Control Options

Flap System Programming

Enabling flap programming and elevator mixing for flap-enabled wing types.

ACRO Mixing Options

Common ACRO mixes like Rudder-Aileron, Elevator-Flap, and their applications in flight.

HELI (HELICOPTER) Setup

Swash Type Selection

Assigning the correct swashplate type for the helicopter model, affecting function list options.

Collective Type Adjustment

Setting collective type to Normal or Reverse for proper operation of throttle/pitch stick and related functions.

Pitch Curve Adjustment

Swashplate Adjustments

Adjusting Swashplate Mix, Exponential, E-Ring, and Elevator Compensation for correct helicopter response.

Gyro Setup

Tail Curve Programming

Mixing for Helicopters

Utilizing Cyclic to Throttle mix to prevent RPM loss and Swashplate Mix for timing correction.

SAIL (SAILPLANE) Setup

Sailplane Type Selection

Selecting wing and tail types to match the sailplane model for appropriate control surface programming.

Camber Preset for Sailplanes

Camber System for Sailplanes

SAIL Mixing Options

Common SAIL mixes like Aileron-Rudder, Aileron-Flap, Elevator-Flap, and their applications.

V-Tail Differential Adjustment

MULTI (MULTIROTOR) Setup

F-Mode Setup for Multirotors

Channel Assignment for Multirotors

Trim Setup for Multirotors

Dual Rates & Exponential for Multirotors

Motor Cut Function

Motor Curve Adjustment

Physical Transmitter Adjustments

Ratcheted and Smooth Throttle Adjustment

Adjust Stick Tension

Mode Change Slider

Programming Conversion

Calibrating Transmitter Controls

Troubleshooting Guide

1-Year Limited Warranty

Warranty Service Procedures

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