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RC4000 ACU Boardset
3.3.2.1.2 12 Bit ADC Voltages
The 12 BIT ADC maintenance screen shows the current voltage levels sensed at the boardset'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".
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 RC4000. Therefore the voltages seen at this screen may not be exactly the same as the input
voltages external to the RC4000.
AZ: 2.5000
EL: 0.0012
POL: UNDER
SIG: 3.3346
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".
Chapter 3
2048
12 BIT ADC
1
0
2731
132
L1:1
L2:0
L3:1
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