User's Manual

Manual Receiver GR-24PRO 3xG+3A+3M+Vario Graupner HoTT 2. 4 25
Cycle time (PERIOD): if your system is used exclusively with digital servos, you can set a cycle time
(frame rate) of 10 ms at this point. If your system includes some or all analogue servos, you should
always select 20 ms, as many analogue servos cannot process the higher frame rate, and may respond
by “jittering” or “growling”.
HoTT sum signal (SUMD): if you activate the digital sum signal at channel 8, a sum signal containing
eight channels is present at this socket, instead of a servo signal. The HoTT receiver congured as
SUMD constantly generates a digital sum signal from 8 control signals from the transmitter and makes
this signal available at the appropriate servo socket, which is receiver-specic. At the time these
instructions were revised, this type of signal is used by several of the latest electronic developments in
the area of ybarless systems, heavy-duty airborne power supplies, etc.
WARNING: if you wish to use this facility, it is essential to observe the set-up information
supplied with the devices connected to the receiver, otherwise there is a risk that your model
may be uncontrollable!
3.3 FREE MIXERS
Important note: If you wish to use the gyros, you
must always set the tail type to ‘normal’ in the trans-
mitter’s model type menu. If your model is a delta, fea-
tures a V-tail, or has two elevator servos, you must use the
receiver mixer - not the transmitter mixer - to control these
control surfaces, since the gyro stabilisation system will
have no effect on these servos otherwise. The four receiver
mixers work ‘downstream’ of the gyros. If you have already
programmed mixer functions in the “Wing mixers” or “Free
mixers” menu of your HoTT transmitter, you must ensure that
those mixers do not overlap with those available in this menu!
Screen Display Key Settings
MIXER Mixer select 1, 2....4
FROM CHANNEL Signal source / source channel 0,1,2,...6
TO CHANNEL Target channel 0,1,2,...6
TRIM Trim position in % -15 - + 15%
TRAVEL- Travel limit at % Servo travel -150 bis +150%
TRAVEL+ Travel limit at % Servo travel -150 bis +150%
MIXER: up to four mixers can be programmed simultaneously. You can switch between Mixer 1, Mixer
2, … and mixer 4 in the “Mixer” line.
The following settings only affect the mixer selected in this line.
FROM CHANNEL: the signal present at the signal source (or source channel) is mixed in to the target
channel (TO CHANNEL) to an extent which can be set by the user. The method of setting up the values
is analogous to the “Free mixers” menu in HoTT transmitters.
TO CHANNEL: part of the source channel signal (FROM CHANNEL) is mixed into the target channel
(TO CHANNEL). The mixer ratio is determined by the percentage values entered in the “TRAVEL-“ and
“TRAVEL+” lines. Select “0” if you do not require the mixer.
Mixer ratio (TRAVEL-/+): in these two lines you can dene the mixer ratio in relation to the source
channel (FROM CHANNEL); the value is set separately for both directions.
RX FREE MIXER < >
>MIXER:
MASTER CH:
SLAVE CH:
>TRIM:
>TRAVEL-:
TRAVEL+:
1
1
6
+0%
+100%
+100%