G-25
All preprogrammed data is protected by a flash
memory that guards against memory loss main
transmitter battery failure.
Flash Memory
Battery Alarm and Display
When the transmitter voltage drops below 9.0 volts DC,
the display flashes “BATT LOW” and an alarm sounds.
If you are flying when this occurs, land immediately.
Tip on Using 2.4GHz Systems
While your DSM equipped 2.4GHz system is intuitive to
operate, functioning nearly identically to 72MHz systems,
following are a few common questions from customers:
1. Q: Which do I turn on first, the transmitter or the
receiver?
A: If the receiver is turned on first, all servos except
for the throttle will be driven to their preset fail-safe
positions set during binding. At this time, the throttle
channel doesn’t put out a pulse position preventing
the arming of electronic speed controllers 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 acquires two open channels. Then the receiver that
was previously bound to the transmitter scan 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 acquires two open
channels. When the receiver is then turned on for a
short period (the time it takes to connect), all servos
except for the throttle are driven to their preset
fail-safe positions while the throttle has no output
pulse; The receiver scans the 2.4GHz band looking
for the previously stored GUID; and 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.
2. Q: Sometimes the system takes longer to connect and
sometimes it doesn’t connect at all?
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 in order to connect. 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 that 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, and in some cases, connection will not occur
as the system is receiving reflected 2.4GHz energy
from itself and is interpreting this and 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-in and, should a
loss of signal occur (fail-safe), the system connects
immediately (4ms) when signal is regained.
