8
GR-18_Copter_jh_V1
Inform yourself before flying your
model on which maximum alti-
tude you can fly in the uncon-
trolled airspace over the starting
position and do not exceed it.
When using an optional OSD
module (No. 33641) the data
from vario and from Euler angle
are only displayed after connect-
ing the transmitter.
Setting important only if servos are
installed for particular functions
Initialization by switching on
Maximum altitude (Max. altitude)
At this point you can enter a maximum altitude, at which an
alarm is triggered, either via the transmitter’s RF module in the
form of the “general alarm tone”: a regular beeping at a rate of
about one per second; alternatively the speech output mes-
sage “Height”. Note: the model’s actual height is adopted as
zero when the receiver is switched on; the indicated height is
therefore the altitude relative to the launch point.
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 sys-
tem 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 “growl-
ing”. Not important for connected speed controllers.
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 configured as SUMD con-
stantly generates a digital sum signal from 8 control signals
from the transmitter and makes this signal available at the ap-
propriate servo socket, which is receiver-specific. At the time
these instructions were revised, this type of signal is used by
several of the latest electronic developments in the area of
flybarless systems, heavy-duty airborne power supplies, etc.
Telemetry sensor (sensor at CH9)
This socket allows you to use either for telemetry or for an ex-
tra channel (9). (Note: Both together is not possible!) Switch-
ing is done in this menu item.
Ð
If you select “Yes”, the socket is connected to the connec-
tion of a sensor.
Ð
If you select “No” a jack is connected to the control chan-
nel 9.
Gyro initialization
After switching on the Copter, the gyro is already active but not
yet initialized. To initialize it, hold the Copter still after switch-
ing on. The calibration will be done only when the receiver is
completely still.
After 3 seconds in still position you will hear beeps emitted
by all motors. The signal tone can variate depending on the
esc model. The beeps will stop when the calibration and ini-
tialization is complete. Wait until the initialization is complete
before you start the model! The motors will not start until the
calibration is complete.
