Fail-Safe/Hold - JR XP652 Instruction Manual

CHAPTER 6: FUNCTIONS
6.8
FAIL-SAFE/HOLD (System Mode)
The Fail-Safe/Hold Function is available only when
you use the XP652 transmitter in either of the
PCM modulations – S-PCM or Z-PCM. This function
is designed to help minimize damage to your
airplane during a loss of signal to the receiver. The
servos either assume the fail-safe presets or hold the
last good signal position.
Note: In the PCM modulations, the Fail-Safe/Hold
Function cannot be totally disabled so that the servos
will react to interference in the same way as they do in
a PPM system. This is only possible with the use of a
PPM receiver and the transmitter in the PPM
modulation.
/
6.9
FAIL-SAFE
Hold (Z-PCM)
The Hold Function is automatically activated when
the radio is turned ON and is in the Z-PCM
modulation.
This function stops (or holds) the servos in the
positions they were in just prior to the interference.
Therefore, your airplane maintains the position held
Accessing Fail-Safe/Hold (Z-PCM)
When the Fail-Safe Function is activated (i.e., when
the signal is interrupted), the transmitter
automatically moves each servo to a preset position.
The position that each servo assumes is determined
by you, as is the time length of interference that must
occur before servo movement.
After the interference has ceased, control of the
airplane returns immediately to you.
There are three time delays to choose from: 1/3 (0.3)
second, 1/2 (0.5) second and 1.0 second. These time
delays are the amount of time it takes, starting the
30
Airplane
•
HOLD FUNCTION IN Z-PCM MODULATION (System Mode)
continued
Note: Since the actual screen appearance varies,
depending on the modulation of your radio, refer
to the appropriate modulation section which follows
(Z-PCM, S-PCM).
As noted earlier, if you are in the PPM modulation, the
Fail-Safe/Hold Function is not applicable. Therefore,
the Fail-Safe/Hold Function will not appear on your
LCD in the PPM mode.
Refer to the Modulation Selection Section for more
information pertaining to the broadcast signal of your
XP652 transmitter.
immediately before the interference was experienced.
When a clear signal is restored, the Hold Function
releases, and control of the airplane returns to you.
If you would prefer your control surfaces to move to a
chosen position during a loss of signal, please refer to
the time delay/memory section below.
moment the interference occurs, until the servos
assume their preset positions.
1. Press the MODE and CHANNEL button
simultaneously and hold.
2. Turn on the transmitter to enter the System
Mode.
3. Press the MODE button until FST appears on the
screen.
Note: If Fail-Safe does not appear on your LCD, it is
because you are transmitting in PPM. Fail-Safe is not
applicable in the PPM mode. Refer to the Modulation
Mode Selection Section for more information.
XP652 MANUAL Airplane