User manual

243Program description - Telemetry
Value Explanation
Possible
settings
CENTER Servo center in µs if active
(inverse),
dependent on
control position
TRIM Trim position in µs
deviating from the
CENTER position
-120 … +120 µs
LIMIT– Travel limit on the "–"
side of servo travel in
% servo travel
30 … 150 %
LIMIT+ Travel limit on the "+"
side of servo travel in
% servo travel
30 … 150 %
PERIOD Cycle time in ms 10 or 20 ms
OUTPUT CH (channel selection)
If applicable, select the line “OUTPUT CH” with the
selection keys. Touch the SET key of the right four-
way button. The value field is shown highlighted. Now
set the desired channel (e. g. 01) with the selection
keys on the right four-way button. The following
parameters are always based on the channel set
here.
Reverse (servo reversal)
Set the rotational direction of the servo connected to
the selected servo channel: ON / OFF
CENTER (servo center)
For the control channel selected in the “OUTPUT CH”
line, the “CENTER” line displays the currently stored
pulse width for “servo centre” in µs. The default chan-
nel pulse width of 1500 µs represents the standard
centre position, and corresponds to the usual servo
centre setting.
In order to change this value, select the “CENTER”
line then tap the SET key of the right four-way button.
The Value field is highlighted. Now move the respec-
tive transmitter control, stick and/or trim lever to the
desired position and store the current control’s posi-
tion with another tap on the SET key. This position is
saved as the new neutral position.
The – new – value now displayed varies according to
the current setting of the transmitter control which af-
fects this control channel, and the position of its trim.
TRIM (trim position)
In the “TRIM” line” you can carry out the fine adjust-
ment of the neutral position of a servo connected to
the control channel selected in the “OUTPUT CH” line
using the selection keys of the right four-way button in
1 µs increments. The value in the “CENTER” line can
be adjusted by the TRIM value set here in a range of
± 120 µs.
Factory setting: 0 µs.
LIMIT–/+ (side dependent travel limit –/+)
This option is provided for the adjustment of a side-
dependent limit (limiting) of the servo travel (rudder
throw) of the servo connected to the control channel
selected in the “OUTPUT CH” line.
The settings for both directions are separate but both
are in a range of 30 … 150 %.
Factory setting: 150 % each.
PERIOD (cycle time)
In this line you determine the time interval of the indi-
vidual channel impulse. This setting is adopted for all
control channels.
With the use of only digital servos, a cycle time of
10 ms can be set.
In mixed operation or with use of only analog servos,
20 ms should absolutely be set, because the latter
can otherwise be “over-strained” and react with “shak-
ing” or “quivering” as a result.
RX FAIL SAFE
RX FAIL SAFE
INPUT CH: 01
MODE : HOLD
F.S.POS. : 1500µsec
DELAY : 0.75sec
OUTPUT CH: 01
FAIL SAFE ALL: NO
POSITION : 1500µsec
The description of this menus necessitates a few
words of warning in advance:
“Do nothing” is the absolute worst thing to be done in
this regard. “HOLD” is prescribed in the base setup
model of the HoTT receiver.
In the event of a failure, in the best case scenario the
model flies straight ahead for an indefinite amount of
time and then hopefully “lands” somewhere without
causing significant damage! However, if something
like this happens in the wrong place at the wrong
time, the model may become uncontrollable and “tear”
across the flight field completely out of control, putting
the pilot and spectators at risk.
Therefore, it would obviously be beneficial to program
the the function “Motor off” at the very least, in order
to prevent such risks. If necessary, seek the advice of
an experienced pilot in order to find a “logical” setting
for your model.
And then another brief notice regarding the three
possible versions of the
mc-16 HoTT and mc-20
HoTT transmitters for the setting of Fail Safe:
The easiest, and recommended, way to fail-safe set-
tings is the use of the »Fail Safe« menu, which can
be reached from the multifunction menu, see page
220.
Similarly, in order to achieve the same result some-
what more laboriously, the “FAIL SAFE ALL” option
described on the following pages is also available.
In addition, there are the relatively elaborate meth-
ods of the individual adjustment using the options