Adjustment Of The Potentiometer For Pth910P / Pth911P Preset Pan & Tilt Motor - Computar Pth911 Bedienungsanweisung

Adjustment of the potentiometer for PTH910P / PTH911P preset pan & tilt motor
This operation is very important for the correct working of the preset.
PTH910 / PTH911 - PHH810 / PHH811 Pan & Tilt motors are still set in our works, therefore this procedure is to be
made only in case of real necessity.
The following procedure has to be followed both for the potentiometer connected with the horizontal movement and for
the one connected with the vertical movement.
A
C
1. Disconnect the pan & tilt motor power supply
2. Adjust the cams by means of a screwdriver
3. Disconnect the gear of the potentiometer from
4. Place an Ohmmeter between points A and C,
5. Replace the potentiometer gear
Pag. 5
until their position is symmetric compared to
the ends of stroke
that of the reduction unit, by pulling sideways
the potentiometer body, paying attention not to
force the retaining spring
as shown in the picture, and turn the
potentiometer shaft till reading the value of
about 1875 Ohm
PTH910 / PTH911 - PHH810 / PHH8119825