National Instruments 9225E Manual de usuario

sbRIO-9225

OPERATING INSTRUCTIONS AND SPECIFICATIONS

NI 9225E

3-Channel, 300 Vrms, 24-Bit, Simultaneous,

Channel-to-Channel Isolated Analog Input Module

NI 9225E Operating Instructions and Specifications 2 ni.com

This document describes how to use the National

Instruments 9225E and includes dimensions, terminal assignments,

and specifications for the NI 9225E. Visit

ni.com/info

and enter

rdsoftwareversion

to determine which software you need for

the modules you are using. For information about installing,

configuring, and programming the system, refer to the system

documentation. Visit

ni.com/info

and enter

cseriesdoc

for

information about C Series documentation.

Caution National Instruments makes no electromagnetic

compatibility (EMC) or CE marking compliance claims

for the NI 9225E. The end-product supplier is responsible

for conformity to any and all compliance requirements.

Caution The NI 9225E must be installed inside a suitable

enclosure prior to use. Hazardous voltages may be present.

NI 9225E Dimensions

The following figure shows the dimensions of the NI 9225E.

Figure 1. NI 9225E Dimensions in Millimeters (Inches)

73.4 (2.89)

0.0 (0.00)

26.7 (1.05)

58.4 (2.30)

66.0 (2.60)

0.0 (0.00)

NI 9225E Operating Instructions and Specifications 4 ni.com

Connecting the NI 9225E

The NI 9225E has three 2-terminal detachable screw-terminal

connectors that provide connections for three simultaneously

sampled, isolated analog input channels.

Figure 2. NI 9225E Terminal Assignments

AI0+

AI0–

AI1+

AI1–

AI2+

AI2–

You can connect ground-referenced or floating signal sources to

the NI 9225E. 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 9225E, 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 9225E. Refer to the Specifications section for more

information about operating voltages and overvoltage protection.

Note You must use 2-wire ferrules to create a secure

connection when connecting more than one wire to a

single terminal on the NI 9225E.

Refer to Figures 3 and 4 for illustrations of how to connect

grounded and floating signal sources to the NI 9225E.

NI 9225E Operating Instructions and Specifications 6 ni.com

Figure 3. Connecting a Grounded Signal Source to the NI 9225E

Figure 4. Connecting a Floating Signal Source to the NI 9225E

NI 9225E

Signal

Source

AI–

–

AI+

NI 9225E

Signal

Source

AI–

–

AI+

The NI 9225E analog input channels are floating with respect to

earth ground and each other. The incoming analog signal on each

channel is conditioned, buffered, and then sampled by a 24-bit

Delta-Sigma ADC.

Each channel provides an independent signal path and ADC,

enabling you to sample all three channels simultaneously. Refer to

Figure 5 for an illustration of the circuitry for one channel of

the NI 9225E.

Figure 5. Input Circuitry for One Channel of the NI 9225E

NI 9225E

AI+

AI–

ADC

Amplifier

Overvoltage

Protection

Prefilter

NI 9225E Operating Instructions and Specifications 8 ni.com

Understanding NI 9225E Filtering

The NI 9225E uses a combination of analog and digital filtering

to provide an accurate representation of in-band signals while

rejecting out-of-band signals. The filters discriminate between

signals based on the frequency range, or bandwidth, of the signal.

The three important bandwidths to consider are the passband, the

stopband, and the alias-free bandwidth.

The NI 9225E represents signals within the passband, as quantified

primarily by passband flatness and phase nonlinearity. All signals

that appear in the alias-free bandwidth are either unaliased signals

or signals that have been filtered by at least the amount of the

stopband rejection.

Passband

The signals within the passband have frequency-dependent gain or

attenuation. The small amount of variation in gain with respect to

frequency is called the passband flatness. The digital filters of the

NI 9225E adjust the frequency range of the passband to match the

data rate. Therefore, the amount of gain or attenuation at a given

frequency depends on the data rate. Figure 6 shows typical

passband flatness for the NI 9225E.

Figure 6. Typical Passband Response of the NI 9225E

Frequency/Data Rate

0.50.4

0.025

0.000

–0.025

–0.050

0.30.20.10

Gain (dB)

Este manual sirve para los siguientes modelos

Tabla de contenidos

Otros manuales de Sistema de E/S de National Instruments

National Instruments

National Instruments R Series Manual de usuario

National Instruments

National Instruments NI-9224 Manual de usuario

National Instruments

National Instruments Data Acquisition Device E Series Manual de usuario

National Instruments

National Instruments NI 6115/6120 Manual de usuario

National Instruments

National Instruments 9220 Manual

National Instruments

National Instruments PCI-445 Series Manual de usuario

National Instruments

National Instruments 9220 Manual de usuario

National Instruments

National Instruments USB-6221 OEM Manual de usuario

National Instruments

National Instruments NI USB-6008 Manual de usuario

National Instruments

National Instruments SCC-68 Manual de usuario

National Instruments

National Instruments USB-9421 Manual de usuario

National Instruments

National Instruments R Series Manual de usuario

National Instruments

National Instruments E Series Manual de operación y mantenimiento

National Instruments

National Instruments NI 9225 Manual de usuario

National Instruments

National Instruments R Series Manual de usuario

National Instruments

National Instruments PXIe-7865 Manual

National Instruments

National Instruments PXIe-4339 Manual de usuario

National Instruments

National Instruments SCXI-1121 Manual

National Instruments

National Instruments SC-2061 Manual de usuario

National Instruments

National Instruments PCIe-7822R Manual de usuario

National Instruments

National Instruments 9232 Manual

National Instruments

National Instruments NI 9752 Manual de usuario

National Instruments

National Instruments SCC-CI20 Manual de usuario

National Instruments

National Instruments R Series Intelligent DAQ PCI/PXI-783xR Manual de usuario

Manuales populares de Sistema de E/S de otras marcas

WAGO

WAGO 750-344 Manual de usuario

Teknim

Teknim TWM-1887 Manual de instrucciones

Intelligent Appliance

Intelligent Appliance IA-2662-E Manual de usuario

BERGHOF

BERGHOF ECC DIO 16/16 Manual de instrucciones

Advantech

Advantech PCM-27J3AU Manual de instalación y operación

Festo

Festo CP-E08-M12-CL Manual de usuario

Measurement Computing

Measurement Computing PCI-DAS64/M1/16 Manual de usuario

Hitachi

Hitachi HX-RIO3 Series Manual de usuario

NUUO

NUUO SCB-A08 Manual de usuario

M-system

M-system R3Y-RS8 Manual de usuario

jablotron

jablotron JB-110N Manual de usuario

Omron

Omron SYSMAC C200H Manual de usuario

DOLD

DOLD SAFEMASTER M Manual de usuario

ABB

ABB OPT-MF-001 Manual de usuario

Omron

Omron SYSMAC C2000H Manual de usuario

Helmholz

Helmholz TB20 Manual de usuario

ICP DAS USA

ICP DAS USA tM-AD2 Manual de usuario

Automationdirect.com

Automationdirect.com DL305 Manual de usuario