National Instruments NI PXI-7831R - Manual (Page 23)

Chapter 2 Hardware Overview of the NI PXI-7831R
NI PXI-7831R User Manual 2-2 ni.com
Figure 2-2. Parts Locator Diagram for the NI PXI-7831R
Analog Input
The NI PXI-7831R has eight independent, 16-bit AI channels that can be
simultaneously sampled or sampled at different rates. The input mode is
software configurable, and the input range is fixed at ±10 V. The converters
return data in two’s complement format. Table 2-1 shows the ideal output
code returned for a given AI voltage.
Table 2-1. Ideal Output Code and AI Voltage Mapping
Input Description AI Voltage
Output Code (Hex)
(Two’s Complement)
Full-scale range –1 LSB 9.999695 7FFF
Full-scale range –2 LSB 9.999390 7FFE
SW1