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RC4000 ACU Boardset
3.3.1.2.4 Polarization Calibration
CCW: -90.0
ZERO DEG VOLTAGE <1.00–4.00 VOLTS>
VREF:
ZERO DEG VOLTAGE <1.00-4.00 VOLTS>
The pol_reference_voltage defines the voltage present when the polarization axis is in its center of
motion. See Polarization Calibration in
OFF:
ANGLE OFFSET <+/-90.0 DEGREES>
The pol_offset item corrects for discrepancies between the polarization axis' electrical and mechanical
alignment.
CCW:
CCW LIMIT<+/-180.0 DEGREES>
CW:
CW LIMIT<+/-180.0 DEGREES>
The ccw_pol_limit and cw_pol_limit configuration items specify the range of polarization axis movement.
Both values are entered as positive values but the controller assigns the correct sign internally.
The values are used to check validity of stored satellite data and for calculating horizontal and vertical
polarization positions. Actual polarization limits are set by potentiometers as described in the installation
section.
SF:
POT SCALE FACTOR <1.00–180.00 DEG/VOLT>
This value specifies the scale factor applicable to the potentiometer-based polarization feedback.
NOTE: The default value for this item will typically be correct.
REF:
POLARITY AT ZERO DEG <0>HORZ <1>VERT
The orientation achieved by placing the polarization axis in the reference position.
Chapter 3
VREF:2.50
OFF:
0.0
CW:
90.0
SF: 48.45
section
4.1.4.
102
CONFIG-POL
REF:0
Software
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