Spektrum DX7 Instruction Manual

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Receiver Power System Requirements
Inadequate power systems that are unable to provide the necessary minimum voltage to the receiver during flight
have become the number one cause of in-flight failures. Some of the power system components that affect the
ability to properly deliver adequate power include:
• Receiver battery pack (number of cells, capacity, cell type, state of charge)
• The ESC’s capability to deliver current to the receiver in electric aircraft
• The switch harness, battery leads, servo leads, regulators etc.
The AR7000 has a minimum operational voltage of 3.5 volts; it is highly recommended the power system be
tested per the guidelines below.
Recommended Power System Test Guidelines
If a questionable power system is being used (e.g. small or old battery, ESC that may not have a BEC that will
support high current draw, etc.), it is recommended that a voltmeter be used to perform the following test.
Note: The Hangar 9 Digital Servo & Rx Current Meter (HAN172) or the Spektrum Flight Log
(SPM9540) are the perfect tools to perform the test below.
Plug the voltmeter into an open channel port in the receiver and with the system on, load the control surfaces
(apply pressure with your hand) while monitoring the voltage at the receiver. The voltage should remain above
4.8 volts even when all servos are heavily loaded.
Note: The latest generations of Nickel-Metal Hydride batteries incorporate a new chemistry
mandated to be more environmentally friendly. These batteries when charged with peak detection
fast chargers have tendencies to false peak (not fully charge) repeatedly. These include all
brands of NiMH batteries. If using NiMH packs, be especially cautious when charging, making
absolutely sure that the battery is fully charged. It is recommended to use a charger that can
display total charge capacity. Note the number of mAh put into a discharged pack to verify it has
been charged to full capacity.
Airplane Quick Start
The following section covers a basic programming for a 4-channel airplane with a single rate. For more details
on programming the aircraft, see the Aircraft section of this manual.
SPEKTRUM DX7 • AIRCRAFT QUICK START GUIDE
Model Type Selection
[TYPE SELECT]
MODEL 1
HELI
◊ACRO
Use to select desired mode
Press to enter
TYPE SELECT
Hold while turning
on the transmitter
Press to accept
model type change
Selecting Airplane Mode
Press the DowN and SELECT keys simultaneously and hold while turning on the transmitter to enter system
setup mode.
Press the UP or DowN button until TYPE SELECT appears on screen.
If ACRO is highlighted on screen, proceed to SERVO REVERSING (page 26).
If HELI is highlighted, press the INCREASE or DECREASE key once and ACRO should be highlighted.
Press the CLEAR key to accept the model type change.
SPEKTRUM DX7 • AIRCRAFT QUICK START GUIDE

Spektrum DX7 Specifications

General

Interface	RF Wireless
Product color	Black
Remote control proper use	-
Built-in display	Yes
Maximum range	- m
Frequency band	2.4 GHz
Channels quantity	7 channels
Number of devices supported	250
Battery capacity	2000 mAh
Quantity per pack	1 pc(s)

Weight and Dimensions

Weight	- g