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If a cable becomes damaged during usage, remove the cable and continue to use the positioner. The
positioner is designed to operate using a single cable if necessary. When time permits the damaged
cable should be repaired by an authorized service facility.
The cables are sized to last the life of the positioner. No replacement from wear is expected. The
spring packages at one end will automatically compensate for any elongation of the cables. Cable
position and stiffness should be checked as per a periodic maintenance schedule.
7.2.2.6 Elevation Position Feedback (inclinometer)
The elevation position feedback is typically produced by an electronic inclinometer within the AvL
NAV RIOM (see 7.4.1.1). The NAV RIOM will most likely be located at the top of the reflector while
the optional EL RIOM will generally be located in either elevation arm.
7.2.2.7 Motor Shaft Encoders
The shaft encoder mounts to the output shaft of the motor, providing a more precise feedback on
Elevation position. The controller uses the output of the elevation encoder to determine the range
of motion from axis point A to point B. The information is then processed by the AAQ and displayed
as distance and angular position.
Figure 7.2.2.7 – Shaft Encoder Examples
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