Rx Servo - GRAUPNER MX-10 HOTT Programming Manual

the receiver. In practice this means the longest time in
which the radio control system went into Fail-Safe mode.
Operating voltage (R-VOLT)
Check the receiver's operating voltage constantly. If it is
too low, you must under no circumstances continue to
operate your model, and certainly not launch it.
The low receiver voltage warning can be adjusted within
the range 3.0 to 6.0 Volt in the "SERVO TEST" sub-menu
under "ALARM VOLT". If the voltage falls below the
threshold, an audible signal (repeated double beep, long
/ short) is generated, and in all the receiver sub-menus
"RX ..." you will see "VOLT.E" at top right. At the same
time the parameter "R-VOLT" is highlighted in the "RX
DATAVIEW" sub-menu.
The current receiver battery voltage is also shown in the
basic display; see page 24.
Minimum operating voltage (L.R-VOLT)
"L.R-VOLT" shows the receiver's minimum operating
voltage since the last time it was switched on.
If this voltage differs signifi cantly from the current
operating voltage "R-VOLT", this could mean that the
receiver battery is being overstressed by the servos,
causing collapses in battery voltage. If this should occur,
we recommend installing a higher-performance receiver
battery to ensure maximum operating safety.
Sensor 1 + 2
Shows the values of the optional telemetry sensor 1
and, if present, sensor 2 in Volt and °C. You will fi nd a
description of these sensors in the Appendix.
116 Program description: Telemetry menu

RX SERVO

RX SERVO
OUTPUT CH: 01
REVERSE : OFF
CENTER : 1500—sec
TRIM : –000—sec
TRAVEL– : 150%
TRAVEL+ : 150%
PERIOD : 20msec
Before you carry out any programming at this screen
display be sure to read the information on page 117.
Value Explanation Possible settings
OUTPUT CH Channel select 1 ... according to
receiver
REVERSE Servo reverse OFF / ON
CENTER Servo centre in μs If active (high-
lighted), according
to transmitter
control position
TRIM Trim position in μs -120 ... +120 μs
deviating from the
CENTRE position
TRAVEL– Travel limitation at 30 ... 150%
% servo travel
TRAVEL+ Travel limitation at 30 ... 150%
% servo travel
PERIOD Cycle time in ms 10 or 20 ms
OUTPUT CH (Channel select)
Select the "Channel" line if necessary using the arrow
buttons. Press the INC+DEC button to highlight the
value fi eld. Now use the INC or DEC buttons to set the
desired channel (e. g. 01). The following parameters
always refer to the channel which you set at this
point:
REVERSE (servo reverse)
Sets the direction of rotation of the servo connected to
the selected control channel: ON / OFF
CENTER (servo centre)
The "CENTRE" line displays the current pulse width in
μs of the control channel selected in the "OUTPUT CH"
line.
The displayed value varies according to the current po-
sition of the transmitter control which affects this control
channel, and also its trim position.
A pulse width of 1500 μs corresponds to the standard
centre position, and therefore the usual servo centre
setting.
To change this value, select the "CENTRE" line and
press the INC+DEC button. Move the corresponding
transmitter control to the desired position, and press the
INC+DEC button again to store the current transmitter
control position. This position is now stored as the new
neutral position.
TRIM (trim position)
The purpose of the "TRIM" line is to provide fi ne ad-
justment of the neutral position of a servo connected to
the control channel selected in the "OUTPUT CH" line.
Adjustments are made in 1 μs increments using the ar-
row buttons of the right-hand four-way button. The value
in the "CENTRE" line can be adjusted over the range
+/- 120 μs around the TRIM value set here.
Default setting: 0 μs
TRAVEL–/+ (servo travel –/+)
This option can be used to place a limit on servo travel