RESEARCH CONCEPTS RC2000C Manual page 28

22 RC2000C Polar Tracking Antenna Controller
polarity of the motor and the position feedback sensor, and set the polarization limits. Make sure that
when the CCW key is depressed to jog the polarization motor counter-clockwise, the displayed
position count INCREASES. Use caution to avoid damaging the potentiometer.
5. Go to LIMITS mode and verify the motor drive polarity. Set the east, west, down, and up limits.
6. Determine the value of the Geo Elevation Position CONFIG mode item. This is the elevation position
where the antenna can be aligned on the various geostationary satellites with only azimuth
movement. The tracking algorithms assume that the mount has been configured to approximately
'track the Clarke belt'.
7. Enter the Azim Slow Speed and Elev Slow Speed CONFIG mode items. See section 3.5 for setting
the slow speed. For a standard 36 volt DC linear actuator with 30 to 40 pulses per inch, a slow
speed value code of 140 to 180 is generally appropriate.
8. Go to SETUP mode and program in the geostationary satellites. Review section 3.6 which describes
a procedure for locating satellites that makes use of the RC2000's ability to display azimuth and
elevation position in an angle format.
9. If desired, enable the AutoPol feature to slave the controller's polarization control output to a satellite
receiver. A digital output on the receiver must be connected to the AutoPol input of the controller,
and the AutoPol feature must be enabled via CONFIG mode.
10. Enable simultaneous azimuth and elevation movement in AUTO mode if the total combined current
draw from both actuators is less than 8 amps over all operating conditions.
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Chapter 3 Installation/Setup