Chapter 4 analog input, Figure 4-1. ni 6232/6233 analog input circuitry, Analog input circuitry – National Instruments NI 6232 User Manual

Page 28: Analog input circuitry -1, Of chapter 4, Analog input

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4-1

NI 6232/6233 User Manual

4

Analog Input

Figure 4-1 shows the analog input circuitry of NI 6232/6233 devices.

Figure 4-1. NI 6232/6233 Analog Input Circuitry

Analog Input Circuitry

I/O Connector

You can connect analog input signals to the M Series device through the I/O
connector. The proper way to connect analog input signals depends on the
analog input ground-reference settings, described in the

Analog Input

Ground-Reference Settings

section. Also refer to Appendix A,

Device-Specific Information

, for device I/O connector pinouts.

MUX

Each M Series device has one analog-to-digital converter (ADC). The
multiplexers (MUX) route one AI channel at a time to the ADC through the
NI-PGIA.

DIFF,

RSE,

or NRSE

I/O Connector

AI <0..

n>

Mux

AI GND

NI-PGIA

AI Terminal

Configuration

Selection

Input Range

Selection

ADC

AI Data

Isolation

Barrier

Digital

Isolators

AI FIFO

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