Spektrum SPMAR6335 User Manual
Page 8
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 AR6335 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.
The Hangar 9
®
Digital Servo & Rx Current Meter (HAN172) is the perfect tool 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.
CAUTION: 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.
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.
ModelMatch
™
Technology
Some Spektrum and JR transmitters offer a patent pending feature called
ModelMatch. ModelMatch technology prevents the possibility of operating a
model using the wrong model memory, potentially preventing a crash. With