User's Manual

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Use the servo curve to set the end points, please refer to Para.
11.3.4.5.
Now the middle point of the slave servos should be set as follows:
Click the individual servos in the window shown above and the
following will be displayed:
The horizontal line shows the correct relationship between the
slave and the master.
Click on the button “Move curve“and move the red points up or
down until the slave servo follows the master servo exactly. The
mouse can also be used to move the curve. The same procedure
must be followed for all of the slave servos.
The servos can now be connected together mecha-
nically.
A variety of parameters can be set to match your chosen servos
and to make synchronising groups easier.
To begin accessing these parameters you have to first click onto
the master servo in the upper left field. Directly below the heading
‘Synchronise servo’ you will see a field with the label ‘user defined’.
By opening the field the following choices will be displayed:
Select the correct type of servo from the list. The field labelled
“Current limit” will show a value in mA and the “Travel limit” as a
percentage. By clicking the “Synchronise” button the servos in the
group will be synchronised and the progress will be indicated by a
blue bar. This process can take up to 1 minute.
It is also possible to set the values for “Current limit“ and the „Tra-
vel limit“ manually. To do this, ‘User defined’ must be selected as
the servo type and the Current draw can be set to between 0 and
5000 mAs. The Travel limit range is from 0 to 25%. If a stiff linkage
or blow back is experienced these values will prevent damage to
the servos and should be adjusted accordingly if the synchronisati-
on process brings disappointing results.
11.3.4.3 Setting the servo input pulse
Weatronic receivers have been designed to work with all makes
and type of servos. Many analogue servos which were designed
to operate with narrow band PPM or PCM modulation systems
often used a slower pulse rate to realise their full potential than
modern digital servos. A high speed Tail Rotor servo for example
will use a very high pulse rate of 3 msec. For all values except for
3 msec. the servo neutral point will be set at 1.5 msec. and for
the 3 msec. setting it will be 0.7 msec. which is needed for a fast
tail rotor servo. The weatronic GigaControl gives you the option to
choose a value between 3 and 30 msec. and the default setting
is 18 msec. On clicking on the drop down box, the following field
will be displayed:
If you are unsure of the correct setting, please refer to the manuf-
actures instructions for the correct value. It may be necessary to
contact the manufacturer or importer to obtain this information
and if the value which you are given is in Hertz (Hz) the table below
can be used for converting to msec:
Hertz – Msec. conversion table:
Milliseconds (msec) Hertz (Hz)
3 333
9 111
15 67
18 56
21 48
30 33