Omega Vehicle Security DAQ-16 - page 13

+32,767
+32,767
+65,535
+65,535
+Vmax
+16,384
0
+49,152
+32,768
+Vmax/2
0
-32,768
+32,768
0
0
-16,384
n/a
+16,384
n/a
-Vmax/2
-32,768
n/a
0
n/a
-Vmax
bipolar
unipolar
bipolar
unipolar
2’s Complement2’s ComplementBinaryBinaryVoltage
Table 2-2. A/D Conversion Format Examples
In order to calculate the actual input voltage from the digital "code" provided by the DAQ-16,
the user must know the configuration used to acquire the data. Given this informati on, the
input voltage can be calculated using the equations below:
Unipolar, binary
input = * Vmax
CODE
65,536
Bipolar, binary
input = - * 2 * Vmax
CODE
65,536 1 2
Unipolar, 2’s complement
input = + * Vmax
CODE
65,536 1
2
Bipolar, 2’s complement
input = * 2 * Vmax
CODE
65,536
DAQ-16 Users Manual 13