EN
8
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 AR8020T 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 tests.
View the receiver voltage during this test on your transmitters telemetry screen,
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.
How QuickConnect
™
Technology Works
• When the receiver voltage drops below 3.5 volts, the system ceases to
operate.
• When power is restored, the receiver immediately attempts to reconnect.
• If the transmitter was left on, the system reconnects typically in about
4/100 of a second.
QuickConnect is designed to allow you to fly safely through most short duration
power interruptions, however, the root cause of these interruptions must be
corrected before the next flight to prevent a crash.
NOTICE:
If a brownout occurs in flight it is vital that the cause of the
brownout be determined and corrected.
IMPORTANT:
When using Y-harness or servo extensions with Spektrum
equipment, do not use reversing harnesses. Using reversing Y-harnesses or
servo extensions may cause servos to operate erratically or not function at all.
