RC4500 Antenna Controller Chapter 5 MODES – In Depth Descriptions
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The 12 BIT ADC maintenance screen shows the current voltage levels sensed at the board-set’s four 12
bit resolution analog to digital inputs. The voltage will be displayed in the 0.0001 to 5.0000 range. If the
microcontroller sees less than 0.0001, it will display “UNDER”.
5.2.2.1.2 12 Bit ADC Voltages
Next to the scaled voltage will be the current analog to digital "count" (0 to 4095).
Note that all of the analog to digital channels have some associated scaling and conditioning circuitry in
the RC4500. Therefore the voltages seen at this screen may not be exactly the same as the input
voltages external to the RC4500.
AZ: 2.5000 2048 12 BIT ADC
EL: 0.0012 1 L1:1
POL: UNDER 0 L2:0
SIG: 3.3346 2731 L3:1
AZ: / EL: / POL:
The first three A/D channels are dedicated to the azimuth, elevation and polarization position sensing
inputs.
SIG:
The fourth channel shows the voltage and count from the external receiver input.
L1: / L2 / L3:
These fields show the status of the signal lock 1 - 3 inputs. A logic high signal is indicated by a “1”.
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