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Program description - Telemetry
On receivers whose right of “SUMO”, an additional
two-digit number in the display appears …
RX SERVO TEST V3.78
ALL–MIN : 1000µsec
ALL–MAX : 2000µsec
ALARM VOLT : 3.8V
ALARM TEMP–:–10°C
ALARM TEMP+: 55°C
TEST : START
CH OUT TYPE:SUMO 08
… after confirmation of “SUMO” with a brief tap on
the centre SET key of the right four-way button,
the active field changes to the right for channel se-
lection. With this selection you specify the highest
of the transmitter channels contained in the SUMO
signal:
RX SERVO TEST V3.78
ALL–MIN : 1000µsec
ALL–MAX : 2000µsec
ALARM VOLT : 3.8V
ALARM TEMP–:–10°C
ALARM TEMP+: 55°C
TEST : START
CH OUT TYPE:SUMO 08
Either confirm the default with another tap on the
centre SET key of the right four-way button or use
the selection keys to pick another channel between
04 and 16 and confirm that with SET.
Receiver outputs will be controlled successively in a
20 ms cycle (30 ms with the GR-32 DUAL receiver,
No. 33516), even if 10 ms is set in the “PERIOD” line
of the the »RX SERVO« screen.
Primarily intended for the “Satellite mode” of two
HoTT receivers, as described below, the sum signal
generated by the SUMO-designated receiver can
also be used, for example, to control of Flybar sys-
tems (provided they have an appropriate input) or
to control flight simulators via an adapter cable, No.
33310.
In …
Satellite mode
… two HoTT receivers are connected to one an-
other through a three-wire connecting cable (No.
33700.1 (300 mm) or 33700.2 (100 mm)) at receiv-
er-type-specific servo connections. Type GR-16 No.
33508 and GR-24 No. 33512 receivers, for exam-
ple, are to be connected with one another at ser-
vo output 8. Type GR-32 DUAL No. 33516 receiver,
features a proper sumdsignal output labelled with “+
S” on the left lower side. More detailed information
can be found on the Internet at www.graupner.de.
All the channels of the HoTT receiver configured as
SUMO (or the channels selected in the “CH OUT
TYPE” line) and designated satellite receiver, are
passed constantly to the second HoTT receiver via
this connection; this is the primary receiver, which is
designated …
• SUMI (sum signal IN)
… the designation for the main receiver. Therefore,
the signal always goes toward SUMI:
RX SERVO TEST V3.78
ALL–MIN : 1000µsec
ALL–MAX : 2000µsec
ALARM VOLT : 3.8V
ALARM TEMP–:–10°C
ALARM TEMP+: 55°C
TEST : START
CH OUT TYPE:SUMI
The receiver defined as SUMI, however, only uses
the sum signal coming from SUMO in the event of
a failure of receipt if at least one channel in SUMI is
programmed to fail-safe.
If the receiver programmed as the SUMO satellite
receiver has a reception outage, the servos con-
nected to this receiver assume the fail-safe posi-
tions which were programmed into the satellite re-
ceiver, completely independent of the main receiver.
On the other hand, if two receivers have a recep-
tion outage simultaneously, the fail-safe settings in
the current receiver software at the time this manu-
al went to revision (in principle, the SUMO’s fail-safe
settings) become effective.
In the individual case, however, interactions
cannot be ruled out, which is why we ur-
gently recommend performing an ap-
propriate test BEFORE commissioning a mod-
el.
This receiver combination is recommended if, for
example, one of the two receivers is installed in the
model at an unfavorable position for recei ving or as
a result of nozzles, carbon fibre material or the like,
there is the danger that the receipt signal is weak-
ened due to the flight position, so that interruptions
of the range must be taken into account.
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