JR X9503 2.4 User Manual

G-26
3. Q:I’veheardthattheDSMsystemislesstolerantof
low voltage. Is that correct?
 A:AllDSMreceivershaveanoperationalvoltagerange
of3.5to9volts.Withmostsystems,thisisnota
problem as most servos cease to operate at around
3.8volts.Whenusingmultiplehigh-currentdraw
servoswithasingleorinadequatebattery/power
source, heavy momentary loads can cause the
voltage to dip below this 3.5-volt threshold, causing
the entire system (servos and receiver) to brown
out.Whenthevoltagedropsbelowthelowvoltage
threshold (3.5 volts), the DSM receiver must reboot
(go through the start-up process of scanning the band
and finding the transmitter) and this can take several
seconds. Please read the receiver power requirement
on page G-24 as this explains how to test for and
prevent this occurrence.
4. Q:Sometimesmyreceiverlosesitsbindandwon’t
connect,requiringrebinding.Whathappensifthebind
is lost in flight?
 A:Thereceiverwillneverloseitsbindunless
instructed to. It’s important to understand that during
the binding process the receiver not only learns the
GUID (code) of the transmitter but the transmitter
learns and stores the type of receiver it’s bound to. If
the bind button on the transmitter is pressed at any
time and the transmitter is turned on, the transmitter
looks for the binding protocol signal from a receiver.
If no signal is present, the transmitter no longer has
the correct information to connect to a specific receiver
and in essence the transmitter has been “unbound”
fromthereceiver.We’vehadseveralcustomersthat
use transmitter stands or trays that unknowingly
depress the bind button and the system is then turned
on, losing the necessary information to allow the
connectiontotakeplace.We’vealsohadcustomers
that didn’t fully understand the range test process
and pushed the bind button before turning on the
transmitter, also causing the system to “lose its bind.”
If, when turning on, the system fails to connect, one of
thefollowinghasoccurred:
•Thewrongmodelhasbeenselectedinthemodel
memory (ModelMatch).
•Thetransmitterisnearconductivematerial
(transmitter case, truck bed, etc.) and the reflected
2.4GHz energy is preventing the system from
connecting (see #2 above).
•Thebindbuttonwasunknowingly(orknowingly)
depressed and the transmitter was turned on
previously, causing the transmitter to no longer
recognize the receiver.
5. Q:CanIusea3-cellLi-Popackinmytransmitter?
 A:No.AllcurrentJRandSpektrumtransmittersare
designedtooperateusinga9.6-volttransmitterpack.
Afullycharged3-cellLi-Popackputsout12.6volts.
Thishighervoltagecanoverloadthepower-regulating
transistor causing damage and or failure, possibly
in flight. Many of our customers have experienced
failuresusing3-cellLi-PopacksandtheiruseinJR
and Spektrum transmitters is highly advised against.
TheX95032.4systemwilloperateforover15hours
using a 2700mAh Ni-MH battery.
6. Q:HowimportantisitthatItestmysystemusinga
flight log?
 A:Formostsportairplanesandhelicopters,theuse
of the flight log is unnecessary. For sophisticated
aircraft, especially those that have significant
conductive materials within the airframe (e.g. jets,
scaleairplanes,etc.),theFlightLogoffersanextra
measure of confidence that all radio components are
workingoptimally.TheFlightLogisanimportant
tool that confirms that the installation (position of the
internal and remote receivers relative to the conductive
materials in the aircraft) is optimized and that the
RF (radio) link is operating at the highest levels of
performance.
Tips on Using 2.4GHz Systems (continued)

JR X9503 2.4 Specifications

General

Brand	JR
Model	X9503 2.4
Category	Receiver
Language	English