Digital Acoustics ESBx-110 Especificaciones Pagina 100

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Core Software Operation
ADDvantage-32 PLUS AC to DC Power Converter
3-20
X*** Parameters A*** Parameters
X***:INPUT #4 TC
X***:INPUT #5 CAL
X***:INPUT #5 ZERO
X***:INPUT #5 TC
X***:INPT #6 CAL
X***:INPT #6 ZERO
X***:INPT #6 TC
There are six -10 to +10 VDC analog inputs located on the ADDvantage-32 PLUS
microprocessor board. Each input is scanned, calibrated, and written into the analog data
table to be used by the application software every SCR firing. The value of the input is
determined by the following equation:
A***:ANALOG IN 1 =
Input Volts (X***:INPT #1 CAL) + X***:INPT 1 ZERO
For example, to scale analog input #1 so that a -10 VDC to 10 VDC signal reads 0 to
2500 FPM in the analog data table, perform the following:
1. Find A***:ANALOG IN 1 in the analog data table.
2. Use this information in the following equations:
0 FPM = -10VDC (X***:INP #1 CAL) +X***:INPT 1 ZERO
2500 FPM = 10VDC (X***:INP #1 CAL) +X***:INPT 1 ZERO
Solving the above equations yields the following results:
X***:INPT #1 CAL = 125 FPM/VDC
X***:INPT 1 ZERO = 1250 FPM
NOTE
The zero value is limited to 150 times the CAL value. Erroneous
results will occur if this is exceeded.
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