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INPUT CH (selection of the input channel)
As already mentioned on page 244, the 16 control
functions of the
mc-32
HoTT transmitter can be ar-
bitrarily distributed to multiple receivers, if necessary,
or even assigned to multiple receiver outputs with
the same control function. For example, this might
be used in order to be able to control two servers for
each aileron flap or an oversize rudder with linked
servos instead of an individual servo.
Distribution to multiple HoTT receivers, in turn, of-
fers the advantage of not having to use a long servo
cable, e. g. for large models. In this case, bear in mind
that only the receiver selected in the line "TELEM-
ETRY RCV" through the »Telemetry« menu can be
addressed!
The 16 control channels (INPUT CH) of the
HoTT can be appropriately managed through so-
called "Channel Mapping" (channel assignment)
whereby a different control channel is assigned to the
servo connection selected in the OUTPUT CH line for
the receiver in the INPUT CH line.
BUT CAUTION:
If, for example, "2AIL" is specified in the
transmitter on the "Aileron/camber flaps" line
of the »Base setup, model« menu (page
104) then control function 2 (Aileron) will already be
assigned in the transmitter to control channels 2 and
5 for distribution to the left and right ailerons. The
receiver's corresponding INPUT CH, which must also
be mapped, would be the channels 02 and 05 in this
case; see the following example.
Examples:
•
You would like to control each aileron of a large
model with two or more servos.
Assign one of the two standard aileron
control channels 2 or 5 as INPUT CH to the
corresponding OUTPUT CH (servo connections)
depending on the left or right bearing surface.
•
You would like to control the rudder of a large
model with two or more servos.
Assign the same INPUT CH (control channel)
to the corresponding OUTPUT CH (servo
connections). In this case, this is the standard
rudder channel 4.
MODE
The settings of the options "MODE", "F.S.Pos." and
"DELAY" determine the behavior of the receiver in the
event of a failure in the transmission from transmitter
to receiver.
The setting programmed under "MODE" is always
based on the channel set in the OUTPUT CH line.
The factory setting for all servos is "HOLD".
For each selected OUTPUT CH (servo connection of
mc-32
the receiver) you can choose between:
•
FAI(L) SAFE
With this selection, in the event of a failure the
corresponding servo moves to the position shown
in the "POSITION" line for the remainder of the
failure until the "Delay time" set in the "DELAY"
line has lapsed.
•
HOLD
With a setting of "HOLD", in the event of a failure
the servo maintains the last correctly received
servo position for the duration of the failure.
•
OFF
With a setting of "OFF", in the event of a failure
the receiver discontinues the retransmission
of (temporarily stored) control impulses for the
respective servo output for the duration of the
failure. In other words, the receiver switches the
impulse line "off".
BUT CAUTION:
Analog servos and even some digital
servos no longer put up any resistance
against the previous control pressure
during the failure of the control impulse and are
more or less pushed out of their position as a
result.
F.S.POS. (Fail-safe position)
For each OUTPUT CH (receiver servo connection),
set the position the given servo should assume in
"FAI(L) SAFE" mode, i. e. in the event of a failure, via
the "F.S.POS." line. This is done by first activating the
value field (inverse representation) with a tap on the
SET
key of the right touch pad then using the selec-
tion keys of the right touch pad to choose the servo
position. The adjustment takes place in 10-µs incre-
ments.
Factory setting: 1500 µs (servo centre).
Important notice:
The function "F.S.POS." has an additional
meaning in all three modes, "OFF", "HOLD"
and "FAI(L) SAFE" in the event that the
receiver is switched on, but (still) does not receive a
valid signal.
The servo immediately travels to the fail-safe
position predefined in the "Position" line. In doing
so, the landing gear, for example, is prevented from
retracting of the receiver is accidentally switched on
while the transmitter is switched off. In normal model
mode, on the other hand, the corresponding servo
behaves in accordance with the set "MODE" in the
event of a failure.
DELAY (fail-safe reaction time or delay)
Here you adjust the delay time after which the servos
should move to their predetermined positions in the
event of a signal interruption. This setting is adopted
for all channels and only pertains to the servos pro-
grammed to the "FAIL SAFE" mode.
Factory setting: 0.75 s.
Program description - Telemetry
249
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