Bedienungsanleitung Spektrum DX5e (Seite 13 von 19) (Englisch)

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13SPEKTRUM DX5e • RADIO USER’S GUIDE

EN DE FR IT

3. If using a regulator, it’s important the above tests are

done for an extended period of 5 minutes. When current

passes through a regulator, heat is generated. This

heat causes the regulator to increase resistance, which

in turn causes even more heat to build up (thermal

runaway). While a regulator may provide adequate

power for a short duration, it’s important to test its

ability over time as the regulator may not be able to

maintain voltage at signiﬁcant power levels.

4. For really large aircraft or complex models (for example

35% and larger or jets), multiple battery packs with

multiple switch harnesses are necessary or in many

cases one of the commercially available power boxes/

busses is recommended. No matter what power systems

you choose, always carry out test #1 above making sure

that the receiver is constantly provided with 4.8 volts or

more under all conditions.

5. The latest generation of Nickel-Metal Hydride batteries

incorporates a new chemistry mandated to be more

environmentally friendly. These batteries, when charged

with peak detection fast chargers, have a tendency 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.

TIPS ON USING 2.4GHZ SYSTEMS

Your DSM equipped 2.4GHz system is intuitive to operate,

functioning nearly identically to FM systems. Following are

a few common questions from customers:

1. Q: After I’ve bound the receiver to my transmitter, which

do I turn on ﬁrst when I want to ﬂy?

A: Either one, unless you are using a Smart Bind

receiver such as the AR6400 or AR6400L. With a

Smart Bind receiver, the transmitter must be turned on

approximately 5 seconds before the receiver.

2. Q: Sometimes the system takes longer to connect or

doesn’t connect at all. Why?

A: In order for a DSM system to connect, the receiver

must receive a large number of uninterrupted signal

packets from the transmitter. This process takes just a

few seconds, but if the transmitter is too close to the

receiver (within 4 feet) or near reﬂective material (metal

objects, carbon ﬁber materials, tuned pipes, etc.) it may

detect its own reﬂected 2.4GHz energy as “noise”. This

can delay or prevent connection.

If this happens make sure you are a sufﬁcient distance

from metal objects and the receiver itself before you

power up and try again.

3. Q: Is it true that DSM systems are less tolerant of low

voltage?

A: All DSM receivers require at least 3.5V to operate

normally. Most servos cease to operate below 3.8V.

Using multiple high-voltage servos, however, with

an inadequate power supply can allow voltage to

momentarily drop below 3.5V. This will cause the

receiver to “brown out” and reconnect.

All recently manufactured JR and Spektrum DSM

receivers feature QuickConnect technology that will

reconnect the system within a quarter of a second

after battery power recovery should a brownout occur.

For more information about Brownout Alert and

QuickConnect, please refer to the instruction manual for

your receiver.

4. Q: Sometimes when I power on my DSM system I notice

the receiver won’t connect and it needs to be rebound to

the transmitter. Can this happen in ﬂight?

A: No. A DSM receiver cannot be unbound from its

transmitter without speciﬁc action by the user. You can

accidentally unbind a receiver by inadvertently placing

the transmitter into bind mode. If this happens and the

transmitter doesn’t detect a binding signal from the

receiver it can cause the receiver to be unbound.

5. Q: How important is it that I test my system using a

Spektrum Flight Log?

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