Spectrum AR9110 PowerSafe Bedienungsanleitung Seite 21

EN
or in the case of an engine powered aircraft, the throttle servo remains in
its current position. When the transmitter is then turned on the transmitter
scans the 2.4GHz band and DSM2 systems will acquire two open channels
while DSMX systems will begin transmission after being turned on. Then the
receiver that was previously bound to the transmitter scans the band and
finds the GUID (Globally Unique Identifier code) stored during binding. The
system then connects and operates normally. If the transmitter is turned on
first, the transmitter scans the 2.4GHz band and DSM2 systems acquire two
open channels while DSMX systems will simply begin transmission. When
the receiver is turned on, the receiver scans the 2.4GHz band looking for the
previously stored GUID. When it locates the specific GUID code and confirms
uncorrupted repeatable packet information, the system connects and normal
operation takes place. Typically this takes 2 to 6 seconds.
Q: Sometimes the system takes longer to connect and sometimes
it doesn't connect at all. Why?
A: In order for the system to connect (after the receiver is bound), the receiver
must receive a large number of continuous (one after the other) uninterrupted
perfect packets from the transmitter. This process is purposely critical of the
environment ensuring that it's safe to fly when the system does connect. If the
transmitter is too close to the receiver (less than 4 feet) or if the transmitter
is located near metal objects (metal transmitter case, the bed of a truck, the
top of a metal work bench, etc.) connection will take longer. In some cases
connection will not occur as the system is receiving reflected 2.4GHz energy
from itself and is interpreting this as unfriendly noise. Moving the system
away from metal objects or moving the transmitter away from the receiver
and powering the system up again will cause a connection to occur. This only
happens during the initial connection. Once connected the system is locked,
and should a loss of signal occur (failsafe), the system connects immediately
(4ms) when signal is regained.
Q: I've heard that the DSM system is less tolerant of low voltage.
Is this correct?
A: All DSM receivers have an operational voltage range of 3.5 to 9.6 volts. With
most systems this is not a problem as in fact most servos cease to operate at
around 3.8 volts. When using multiple highcurrent 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.
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 it's 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 that it's bound to. If the transmitter is put into bind mode, the
transmitter looks for the binding protocol signal from a receiver. If no signal is
21