User`s guide

26 • Operation Theory
Table 8 and 9 illustrate the ideal transfer characteristics of some input
ranges.
Description Bipolar Analog Input Range Digital code
Full-scale Range ±10V ±5V ±2.5V ±1.25V
Least significant bit 4.88mV 2.44mV 1.22mV 0.61mV
FSR-1LSB 9.9951V 4.9976V 2.4988V 1.2494V 7FFX
Midscale +1LSB 4.88mV 2.44mV 1.22mV 0.61mV 001X
Midscale 0V 0V 0V 0V 000X
Midscale –1LSB -4.88mV -2.44mV -1.22mV -0.61mV FFFX
-FSR -10V -5V -2.5V -1.25V 800X
Table 8: Bipolar analog input range and the output digital code on
DAQ/PXI-2204 (Note that the last 4 digital codes are
SDI<3..0>
Description Unipolar Analog Input Range Digital code
Full-scale Range 0V to 10V 0 to +5V 0 to +2.5V
Least significant bit 2.44mV 1.22mV 0.61mV
FSR-1LSB 9.9976V 4.9988V 2.9994V 7FFX
Midscale +1LSB 5.00244V 2.50122V 1.25061V 001X
Midscale 5V 2.5V 1.25V 000X
Midscale –1LSB 4.9976V 2.4988V 1.2494V FFFX
-FSR 0V 0V 0V 800X
Table 9: Unipolar analog input range and the output digital code on
DAQ/PXI-2204 (Note that the last 4 digital codes are
SDI<3..0>