Related Manuals for National Instruments NI 9225E
Summary of Contents for National Instruments NI 9225E
- Page 1 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9225E 3-Channel, 300 V , 24-Bit, Simultaneous, Channel-to-Channel Isolated Analog Input Module...
- Page 2 National Instruments makes no electromagnetic Caution 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. The NI 9225E must be installed inside a suitable Caution enclosure prior to use.
- Page 3 NI 9225E Dimensions The following figure shows the dimensions of the NI 9225E. 73.4 (2.89) 0.0 (0.00) Figure 1. NI 9225E Dimensions in Millimeters (Inches) © National Instruments Corp. NI 9225E Operating Instructions and Specifications...
- Page 4 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 NI 9225E Operating Instructions and Specifications AI0+ AI0– AI1+ AI1–...
- Page 5 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–...
- Page 6 Signal Source – AI– NI 9225E Figure 3. Connecting a Grounded Signal Source to the NI 9225E Signal Source – AI– NI 9225E Figure 4. Connecting a Floating Signal Source to the NI 9225E NI 9225E Operating Instructions and Specifications...
- Page 7 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.
- Page 8 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.
- Page 9 0.025 0.000 –0.025 –0.050 Figure 6. Typical Passband Response of the NI 9225E © National Instruments Corp. Frequency/Data Rate NI 9225E Operating Instructions and Specifications...
- Page 10 Alias-Free Bandwidth Any signal that appears in the alias-free bandwidth of the NI 9225E is not an aliased artifact of signals at a higher frequency. The alias-free bandwidth is defined by the ability of the filter to reject frequencies above the stopband frequency and equals the data rate minus the stopband frequency.
- Page 11 16.667 kS/s, and so on down to 1.613 kS/s, depending on the value of n. When using an external timebase with a frequency other than 12.8 MHz, the NI 9225E has a different set of data rates. The cRIO-9151 R Series Expansion chassis does Note not support sharing timebases between modules.
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Page 12: Sleep Mode
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. NI 9225E Operating Instructions and Specifications 12 ni.com... -
Page 13: Specifications
Internal master timebase (f Frequency ... 12.8 MHz Accuracy... ±100 ppm max Data rate range (f ) using internal master timebase Minimum... 1.613 kS/s Maximum ... 50 kS/s © National Instruments Corp. prefiltering) 13 NI 9225E Operating Instructions and Specifications... - Page 14 Input impedance (AI+ to AI–) ... 1 MΩ The data rate must remain within the appropriate data rate range. Refer to the Understanding NI 9225E Data Rates NI 9225E Operating Instructions and Specifications 14 ÷ -------------------- - , n = 1, 2, ..., 31 section for more information.
- Page 15 Post calibration gain match (ch-to-ch, 20 kHz)... ±0.25 dB max © National Instruments Corp. Percent of Reading (Gain Error) (Offset Error) ±0.23% ±0.05% ±0.084% ±1.6% ±0.4% 15 NI 9225E Operating Instructions and Specifications Percent of Range ±0.05% ±0.008% ±0.016% ±0.66% ±0.09%...
- Page 16 Alias-free bandwidth ... 0.453 · f –3 dB bandwidth (f CMRR (f = 60 Hz)... –104 dB SFDR (1 kHz, –60 dB) ... –128 dB NI 9225E Operating Instructions and Specifications 16 = 50 kS/s) ... 24.56 kHz + 3 μs ni.com...
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Page 17: Power Requirements
Sleep mode ... 25 μW max Thermal dissipation (at 70 °C) Active mode ... 760 mW max Sleep mode ... 265 mW max © National Instruments Corp. Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method 17 NI 9225E Operating Instructions and Specifications... -
Page 18: Physical Characteristics
Safety Maximum Voltage Connect only voltages that are within the following limits. AI+ to AI– ... 300 V NI 9225E Operating Instructions and Specifications 18 conductor wire with 7 mm (0.28 in.) of insulation stripped from the end (1.95 to 2.21 lb · in.) to 0.5 mm... -
Page 19: Isolation Voltages
This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe. Do not connect the NI 9225E to signals or use for Caution measurements within Measurement Categories III or IV. -
Page 20: Online Product Certification
To obtain product certifications and the DoC for this product, visit , search by module number or product line, and certification click the appropriate link in the Certification column. NI 9225E Operating Instructions and Specifications 20 ni.com/ ni.com... - Page 21 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.
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Page 22: Environmental Management
WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit environment/weee NI 9225E Operating Instructions and Specifications 22 ni.com/environment At the end of the life cycle, all products . This page ni.com/... -
Page 23: For Information
China RoHS compliance, go to environment/rohs_china Calibration You can obtain the calibration certificate and information about calibration services for the NI 9225E at Calibration interval ... 1 year © National Instruments Corp. National Instruments RoHS 23 NI 9225E Operating Instructions and Specifications... -
Page 24: Where To Go For Support
Where to Go for Support The National Instruments Web site is your complete resource for technical support. At you have access to ni.com/support everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers. - Page 25 Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545 National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.
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