National Instruments sbRIO-9220 User manual

GETTING STARTED GUIDE
sbRIO-9220
Non-Enclosed, ±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input,
16-Channel C Series Voltage Input Module
This document explains how to connect to the sbRIO-9220.
Note Before you begin, read the sbRIO-9220 Safety, Environmental, and
Regulatory Information document on ni.com/manuals and complete the software
and hardware installation procedures in your chassis documentation.
Note The guidelines in this document are specific to the sbRIO-9220. The other
components in the system might not meet the same safety ratings. Refer to the
documentation for each component in the system to determine the safety and EMC
ratings for the entire system.
Notice Electrostatic Discharge (ESD) can damage the sbRIO-9220. To prevent
damage, use industry-standard ESD prevention measures during installation,
maintenance, and operation.

sbRIO-9220 Pinout
AI0+
AI1+
AI3+
AI5+
AI7+
AI9+
AI11+
AI13+
AI15+
COM
AI2+
AI4+
AI6+
AI8+
AI10+
AI12+
AI14+
COM
AI1-
AI0-
AI2-
AI4-
AI6-
AI8-
AI10-
AI12-
AI14-
COM
AI3-
AI5-
AI7-
AI9-
AI11-
AI13-
AI15-
COM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
2| ni.com | sbRIO-9220 Getting Started Guide

Table 1. Signal Descriptions
Signal Description
AI+ Positive analog input signal connection
AI- Negative analog input signal connection
COM Common reference connection to isolated ground
sbRIO-9220 Block Diagram
Input signals on each channel are buffered, conditioned, and then sampled by an ADC.
Each AI channel provides an independent signal path and ADC, enabling you to sample
all channels simultaneously.
COM
AI0+
AI0–
sbRIO-9220
16-Bit Isolated
SAR ADC
Overvoltage Protection
Overvoltage Protection
+
–
AI15+
AI15–
16-Bit Isolated
SAR ADC
Overvoltage Protection
Overvoltage Protection
+
–
sbRIO-9220 Getting Started Guide | © National Instruments Corporation | 3

Grounded Differential Connections
Voltage
Source
+
–
AI+
AI–
COM
sbRIO-9220
Floating Differential Connections
sbRIO-9220
AI+
AI–
COM
Voltage
Source
1 MΩ
Resistor
+
–
Connect the negative lead to COM through a 1 MΩ resistor to keep the signal source
within the common-mode voltage range. The sbRIO-9220 does not read data accurately if
the signal source is outside of the common-mode voltage range.
4| ni.com | sbRIO-9220 Getting Started Guide

Single-Ended Connections
+
–
AI+
AI–
COM
Voltage
Source
sbRIO-9220
Connect the ground signal to COM to keep the signal source within the common-mode
voltage range.
Connection Guidelines
• Make sure that devices you connect to the sbRIO-9220 are compatible with the
module specifications.
• You must use 2-wire ferrules to create a secure connection when connecting more than
one wire to a single terminal.
• Push the wire into the terminal when using a solid wire or a stranded wire with a
ferrule.
• Open the terminal by pressing the push button when using stranded wire without a
ferrule.
NI Services
Visit ni.com/support to find support resources including documentation, downloads, and
troubleshooting and application development self-help such as tutorials and examples.
Visit ni.com/services to learn about NI service offerings such as calibration options,
repair, and replacement.
Visit ni.com/register to register your NI product. Product registration facilitates technical
support and ensures that you receive important information updates from NI.
sbRIO-9220 Getting Started Guide | © National Instruments Corporation | 5

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378510A-01 February 8, 2021