Servomatching - PowerBox Systems Mercury SRS Instruction Manual

6. Servomatching

The Servo-Match function provides the facility for adjusting the centrepositi-
on and end-points of the servos connected to the backer. If you have a
model aircraft with more than one servo per control surface, this makes it
possible to set up multiple servos to move to identical positions at identical
times. Since this ensures that the servos do not work against each other,
their effective life is increased, and more power is available to move the
control surfaces; matched servos also draw lower current. It is also possible
to reverse the direction of rotation of individual servos. This function is
useful if you wish to employ fewer channels at the transmitter. For example,
the right and left elevators, or the right and left landing flaps, can be control-
led using only one radio channel. In models such as jets and warbirds,
which by their nature have a large number of working systems, this feature
can be very important, but it can also make transmitter programming much
easier with other types of model.
Select SERVO-MATCHING in the Main menu, and the following screen
display appears:
To ensure accurate servo matching, the output to be adjusted must first be
initialised. Leave the associated transmitter stick at centre. Move the cursor
to INIT OUTPUT and press the SET button. Now move the transmitter stick
to both end-points. The graphic display shows the movement of the upper
arrow, which indicates the input signal. The bar inside the box shows the
movement of the output. The three lower arrows indicate the centre and
end-point positions which are 'learned' in this process.
Note: if the channel has not yet been initialised, it is not possible to select
the START and REVERSE SERVO points.
-16-