User guide

Operation l 4-75
4
Operation
Scale Page Description (continued)
Remote Digital Potentiometer
The Remote Digital Potentiometer uses a 4-millisecond wide carrier pulse. The
pulse width is modified by clicks of the potentiometer’s rotary dial. Positive rota-
tions add 40 microseconds per click. Negative rotations subtract 40 microseconds
per click.
Calibrations can be made by using the Learn feature. For calibration, it is neces-
sary to “learn” the time for one click clockwise and one click counterclockwise.
The “Learn” button automatically places the results in the proper box.
• Center - is the average time between rotating the potentiometer’s rotary dial
clockwise one click (+1) and counterclockwise (-1) one click. This value can be
found by taking the average of both numbers.
• One Click - is result of the (-1) captured counterclockwise rotation of the
potentiometer’s rotary dial subtracted from the “Center” measurement.
To set Center and One Click scaling:
1 Press the Puller section’s Remote Digital Pot or Center window. A numeric
pop-up keyboard appears.
2 Key in the new scaling amount.
3 Then press “Enter”. The pop-up keyboard is removed.