National Instruments NI 9222, NI 9223 Specifications

OPERATING INSTRUCTIONS AND SPECIFICATIONS

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NI 9222/9223

4-Channel, ±10 V, 16-Bit Simultaneous,
Channel-to-Channel Isolated Analog Input Modules

This document describes how to use the National Instruments 9222
and National Instruments 9223 and includes specifications and
terminal assignments for the NI 9222 and NI 9223. In this
document, the NI 9222 and NI 9223 are referred to inclusively as
the NI 9222/9223.Visit

rdsoftwareversion to determine which software you need for

ni.com/info and enter

the modules you are using. For information about installing,
configuring, and programming the system, refer to the system
documentation. Visit
information about C Series documentation. Visit
and enter

compatibility for information about chassis and

ni.com/info and enter cseriesdoc for

ni.com/info

carrier compatibility for the modules you are using.

Note The safety guidelines and specifications in this

document are specific to the NI 9222/9223. The other
components in the system might not meet the same safety
ratings and specifications. Refer to the documentation for
each component in the system to determine the safety
ratings and specifications for the entire system. Visit

ni.com/info and enter cseriesdoc for information

about C Series documentation.

NI 9222/9223 2 ni.com

Safety Guidelines

Operate the NI 9222/9223 only as described in these operating
instructions.

Hot Surface This icon denotes that the component may be

hot. Touching this component may result in bodily injury.

Safety Guidelines for Hazardous Locations

The NI 9222/9223 is suitable for use in Class I, Division 2, Groups
A, B, C, D, T4 hazardous locations; Class I, Zone 2,
AEx nA IIC T4, and Ex nA IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are
installing the NI 9222/9223 in a potentially explosive environment.
Not following these guidelines may result in serious injury or
death.

Caution Do not disconnect I/O-side wires or connectors

unless power has been switched off or the area is known
to be nonhazardous.

Caution Do not remove modules unless power has been

switched off or the area is known to be nonhazardous.

© National Instruments Corp. 3 NI 9222/9223

Caution Substitution of components may impair

suitability for Class I, Division 2.

Caution For Zone 2 applications, install the system

in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.

Special Conditions for Hazardous Locations Use in Europe

This equipment has been evaluated as Ex nA IIC T4 equipment
under DEMKO Certificate No. 07 ATEX 0626664X. Each module

is marked II 3G and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of –40 °C ≤ Ta ≤ 70 °C. If you
are using the NI 9222/9223 in Gas Group IIC hazardous locations,
you must use the device in an NI chassis that has been evaluated as
Ex nC IIC T4, EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4
equipment.

NI 9222/9223 4 ni.com

Electromagnetic Compatibility Guidelines

This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
as stated in the product specifications. These requirements and
limits are designed to provide reasonable protection against
harmful interference when the product is operated in its intended
operational electromagnetic environment. There is no guarantee
that interference will not occur in a particular installation. To
minimize the potential for the product to cause interference to radio
and television reception or to experience unacceptable
performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.

The following statements contain important information needed
before installing and using this product:

Caution This product is intended for use in industrial

locations. As a result, this product may cause interference
if used in residential areas. Such use must be avoided
unless the user takes special measures to reduce
electromagnetic emissions to prevent interference to the
reception of radio and television broadcasts.

© National Instruments Corp. 5 NI 9222/9223

Caution Emissions that exceed the regulatory

requirements may occur when this product is connected
to a test object.

Caution Changes or modifications not expressly

approved by National Instruments could void the user’s
authority to operate the hardware under the local

regulatory rules.

Special Guidelines for Marine Applications

Some products are Lloyd’s Register (LR) Type Approved for
marine (shipboard) applications. To verify Lloyd’s Register
certification for a product, visit

ni.com/certification and

search for the LR certificate, or look for the Lloyd’s Register mark
on the product label.

Caution In order to meet the EMC requirements for

marine applications, install the product in a shielded
enclosure with shielded and/or filtered power and
input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes
and cables to ensure that the desired EMC performance is
attained.

NI 9222/9223 6 ni.com

Connecting the NI 9222/9223

The NI 9222/9223 provides connections for four simultaneously
sampled, isolated analog input channels.

AI0+
AI0–

AI1+
AI1–

AI2+
AI2–

AI3+
AI3–

0
1

0
1

0
1

0
1

Figure 1. NI 9222/9223 Terminal Assignments

© National Instruments Corp. 7 NI 9222/9223

Caution Electrostatic Discharge (ESD) can damage this

product. To prevent damage, use industry-standard ESD
prevention measures during installation, maintenance,
and operation.

The NI 9222/9223 has four 2-terminal detachable screw-terminal
connectors.

Note You must use 2-wire ferrules to create a secu re

connection when connecting more than one wire to a
single terminal on the NI 9222/9223.

Yo u can connect ground-referenced or floating signal sources to
the NI 9222/9223. Connect the positive signal of the signal source
to the AI+ terminal, and connect the negative signal of the signal
source to the AI– terminal. If you make a ground-referenced
connection between the signal source and the NI 9222/9223, make
sure the voltage on the AI+ and AI– connections are in the
channel-to-earth safety voltage range to ensure proper operation of
the NI 9222/9223. Refer to the Specifications section for more
information about operating voltages and overvoltage protection.
Refer to Figures 2 and 3 for illustrations of how to connect
grounded and floating signal sources to the NI 9222/9223.

NI 9222/9223 8 ni.com

Figure 2. Connecting a Grounded Signal Source to the NI 9222/9223

NI 9222/9223

Signal

Source

AI–

+

–

AI+

NI 9222/9223

Signal

Source

AI–

+

–

AI+

Figure 3. Connecting a Floating Signal Source to the NI 9222/9223

© National Instruments Corp. 9 NI 9222/9223

The NI 9222/9223 analog input channels are floating with respect

NI 9222/9223

AI+

AI–

ADC

Amplifier

Overvoltage

Protection

to earth ground and each other. The incoming analog signal on each
channel is buffered, conditioned, and then sampled by a 16-bit
successive approximation register ADC.

Each channel provides an independent signal path and ADC,
enabling you to sample all four channels simultaneously. Refer to
Figure 4 for an illustration of the circuitry for one channel.

Figure 4. Input Circuitry for One Channel of the NI 9222/9223

NI 9222/9223 10 ni.com

Wiring for High-Vibration Applications

If an application is subject to high vibration, National Instruments
recommends that you either use ferrules to terminate wires to the
detachable screw-terminal connector or use the NI 9971 backshell
kit to protect the connections. Refer to Figure 5 for an illustration
of wiring a terminal using ferrules.

Figure 5. 2-Terminal Detachable Screw-Terminal Connector with Ferrule

© National Instruments Corp. 11 NI 9222/9223

Sleep Mode

This module supports a low-power sleep mode. Support for sleep
mode at the system level depends on the chassis that the module is
plugged into. Refer to the chassis manual for information about
support for sleep mode. If the chassis supports sleep mode, refer to
the software help for information about enabling sleep mode. Visit

ni.com/info and enter cseriesdoc for information about

C Series documentation.

Typically, when a system is in sleep mode, you cannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode. Refer to the Specifications section for more
information about power consumption and thermal dissipation.

Specifications

The following specifications are typical for the range –40 to 70 °C
unless otherwise noted. All voltages are relative to the AI– signal
on each channel unless otherwise noted. The specifications are the
same for the NI 9222 and the NI 9223 unless otherwise noted.

NI 9222/9223 12 ni.com

Input Characteristics

Number of channels.......................... 4 analog input channels

ADC resolution................................. 16 bits

Type of ADC..................................... Successive approximation

register (SAR)

Input voltage ranges

1

Measurement Voltage, AI+ to AI–

Minimum* Typical Maximum

±10.5 V ±10.6 V ±10.7 V

* The minimum measurement voltage range is the largest voltage the
NI 9222/9223 is guaranteed to accurately measure.

Overvoltage protection ..................... ±30 V

1

Refer to the Safety Guidelines section for more information about safe operating

voltages.

© National Instruments Corp. 13 NI 9222/9223

Maximum Sampling Rate

CompactDAQ RIO

Module

NI-DAQmx

FPGA User-Controlled

I/O Sampling*

FPGA I/O

Nodes

NI 9222 500 kS/s 500 kS/s 300 kS/s

NI 9223 1 MS/s 1 MS/s 350 kS/s

* FPGA User-Controlled I/O Sampling provides low level access to sample
acquisition and transfer, and higher sample rates. Visit ni.com/info and
enter samplerate for information about FPGA User-Controlled I/O
Sampling for the NI 9222/9223.

NI 9222/9223 14 ni.com

Accuracy

Percent of

Reading

Measurement Conditions

Calibrated, max (–40 to 70 °C) ±0.20% ±0.10%

Calibrated, typ (23 °C, ±5 °C) ±0.02% ±0.01%

Uncalibrated, max (–40 to 70 °C) ±0.40% ±0.40%

Uncalibrated, typ (23 °C, ±5 °C) ±0.20% ±0.10%

* Range equals 10.6 V

(Gain Error)

Percentage

of Range*

(Offset Error)

Stability

Gain drift .................................... 6 ppm/°C

Offset drift .................................. 29 μV/°C

CMRR (f

= 60 Hz)..........................100 dB

in

–3 dB bandwidth

NI 9222....................................... >500 kHz

NI 9223....................................... >1 MHz

Input impedance................................ >1 GΩ

© National Instruments Corp. 15 NI 9222/9223

Noise ................................................. 0.75 LSB

Total Harmonic Distortion (THD)

rms

(20 V

Crosstalk (20 V

at 10 kHz) ............................–85 dB

pp

at 1 kHz) .............. –100 dB

pp

MTBF ............................................... Contact NI for Bellcore

MTBF or MIL-HDBK-217F
specifications.

Power Requirements

Power consumption from chassis

Active mode ............................... 1 W max

Sleep mode ................................. 5 mW max

Thermal dissipation (at 70 °C)

Active mode ............................... 1.3 W max

Sleep mode ................................. 430 mW max

NI 9222/9223 16 ni.com

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Note For two-dimensional drawings and

three-dimensional models of the C Series module and
connectors, visit ni.com/dimensions and search by
module number.

Screw-terminal wiring ...................... 12 to 24 AWG copper

conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end

Torque for screw terminals ............... 0.5 to 0.6 N · m

(4.4 to 5.3 lb · in.)

Ferrules ............................................. 0.25 mm

2

to 2.5 mm

2

Weight...............................................138 g (4.9 oz)

© National Instruments Corp. 17 NI 9222/9223

Safety

Safety Voltages

Connect only voltages that are within the following limits.

Isolation

Channel-to-channel

Continuous ........................... 60 VDC,

Measurement Category I

Withstand ............................. 1000 V

, verified by a 5 s

rms

dielectric withstand test

Channel-to-earth ground

Continuous ........................... 60 VDC,

Measurement Category I

Withstand ............................. 1000 V

, verified by a 5 s

rms

dielectric withstand test

Division 2 and Zone 2 hazardous locations applications

(Channel-to-channel and

channel-to-earth ground) ............ 60 VDC,

Measurement Category I

NI 9222/9223 18 ni.com

Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live electrical
supply system that powers equipment. This category is for
measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered by
regulated low-voltage sources, and electronics.

Caution Do not connect the NI 9222/9223 to signals or

use for measurements within Measurement Categories II,
III, or IV.

Hazardous Locations

U.S. (UL) .......................................... Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nA IIC T4

Canada (C-UL) ................................. Class I, Division 2,

Groups A, B, C, D, T4;
Class I, Zone 2,
Ex nA IIC T4

Europe (DEMKO)............................. Ex nA IIC T4

© National Instruments Corp. 19 NI 9222/9223

Safety Standards

This product meets the requirements of the following standards of
safety for electrical equipment for measurement, control, and
laboratory use:

• IEC 61010-1, EN 61010-1

• UL 61010-1, CSA 61010-1

Note For UL and other safety certifications, refer to the

product label or the Online Product Certification section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC
standards for electrical equipment for measurement, control, and
laboratory use:

• EN 61326-1 (IEC 61326-1): Class A emissions; Industrial
immunity

• EN 55011 (CISPR 11): Group 1, Class A emissions

• AS/NZS CISPR 11: Group 1, Class A emissions

• FCC 47 CFR Part 15B: Class A emissions

• ICES-001: Class A emissions

NI 9222/9223 20 ni.com

Caution When operating this product, use shielded

cables and accessories.

Note For EMC declarations and certifications, refer to

the Online Product Certification section.

CE Compliance

This product meets the essential requirements of applicable
European Directives as follows:

• 2006/95/EC; Low-Voltage Directive (safety)

• 2004/108/EC; Electromagnetic Compatibility Directive
(EMC)

Online Product Certification

To obtain product certifications and the Declaration of Conformity
(DoC) for this product, visit
module number or product line, and click the appropriate link in
the Certification column.

© National Instruments Corp. 21 NI 9222/9223

ni.com/certification, search by

Shock and Vibration

To meet these specifications, you must panel mount the system and
either affix ferrules to the ends of the terminal wires or use the
NI 9971 backshell kit to protect the connections.

Operating vibration

Random (IEC 60068-2-64)......... 5 g

, 10 to 500 Hz

rms

Sinusoidal (IEC 60068-2-6) ....... 5 g, 10 to 500 Hz

Operating shock

(IEC 60068-2-27).............................. 30 g, 11 ms half sine,

50 g, 3 ms half sine,
18 shocks at 6 orientations

Environmental

National Instruments C Series modules are intended for indoor use
only but may be used outdoors if installed in a suitable enclosure.
Refer to the manual for the chassis you are using for more
information about meeting these specifications.

Operating temperature

(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 70 °C

Storage temperature

(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 85 °C

NI 9222/9223 22 ni.com

Ingress protection.............................. IP 40

Operating humidity

(IEC 60068-2-56).............................. 10 to 90% RH,

noncondensing

Storage humidity

(IEC 60068-2-56).............................. 5 to 95% RH,

noncondensing

Maximum altitude............................. 2,000 m

Pollution Degree ............................... 2

Environmental Management

NI is committed to designing and manufacturing products in an
environmentally responsible manner. NI recognizes that
eliminating certain hazardous substances from our products is
beneficial to the environment and to NI customers.

For additional environmental information, refer to the NI and the
Environment Web page at

ni.com/environment. This page

contains the environmental regulations and directives with which
NI complies, as well as other environmental information not
included in this document.

© National Instruments Corp. 23 NI 9222/9223

Waste Electrical and Electronic Equipment (WEEE)

RoHS

˅

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National Instruments

ヺড়Ё೑⬉ᄤֵᙃ

ѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ

(RoHS)

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National Instruments

Ё೑

RoHS

ড়㾘ᗻֵᙃˈ䇋ⱏᔩ

ni.com/environment/rohs_china

DŽ

(For information

about China RoHS compliance, go to

ni.com/

environment/rohs_china

.)

EU Customers At the end of the product life cycle,

all products must be sent to a WEEE recycling center.
For more information about WEEE recycling centers,
National Instruments WEEE initiatives, and compliance
with WEEE Directive 2002/96/EC on Waste and
Electronic Equipment, visit

weee

.

ni.com/environment/

Calibration

Yo u can obtain the calibration certificate and information about
calibration services for the NI 9222/9223 at

ni.com/

calibration

.

Calibration interval ........................... 1 year

NI 9222/9223 24 ni.com

Where to Go for Support

The National Instruments Web site is your complete resource for
technical support. At

ni.com/support you have access to

everything from troubleshooting and application development
self-help resources to email and phone assistance from
NI Application Engineers.

National Instruments corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to
help address your support needs. For telephone support in the
United States, create your service request at

ni.com/support

and follow the calling instructions or dial 512 795 8248. For
telephone support outside the United States, contact your local
branch office:

Australia 1800 300 800, Austria 43 662 457990-0,
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,
Canada 800 433 3488, China 86 21 5050 9800,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,
Germany 49 89 7413130, India 91 80 41190000,
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,

© National Instruments Corp. 25 NI 9222/9223

Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,
Malaysia 1800 887710, Mexico 01 800 010 0793,
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,
Norway 47 (0) 66 90 76 60, Poland 48 22 328 90 10,
Portugal 351 210 311 210, Russia 7 495 783 6851,
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,
Taiwan 886 02 2377 2222, Thailand 662 278 6777,
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545

NI 9222/9223 26 ni.com

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