Download
Share
Print this page
  1. Manuals
  2. Brands
  3. NI Manuals
  4. Control Unit
  5. C Series
  6. Getting started

NI C Series Getting Started

Hide thumbs Also See for C Series:
1
2
3
4
5
6
7
8
9

Advertisement

Quick Links

Download this manual
NI-9250
Getting Started
2024-01-16

Advertisement

loading
Need help?

Need help?

Do you have a question about the C Series and is the answer not in the manual?

Questions and answers

Related Manuals for NI C Series

Summary of Contents for NI C Series

  • Page 1 NI-9250 Getting Started 2024-01-16...
  • Page 2 NI-9250 Getting Started........
  • Page 3 AI0+ AI0– AI1+ AI1– Table 1. Signal Descriptions Signal Description Positive analog input signal connection Negative analog input signal connection NI-9250 Block Diagram 2 mA IEPE on/off AC/DC Coupling – 50 Ω Amplifier NI 9250 with BNC © National Instruments...
  • Page 4 NI-9250 Getting Started Input signals on each channel are buffered, conditioned, and then sampled ■ by an ADC. Each AI channel provides an independent signal path to the ADC, enabling ■ you to sample all channels simultaneously. AI channels are referenced to earth ground through a protected 50 Ω...
  • Page 5 The NI-9250 provides an IEPE excitation current for each channel to measure the IEPE sensors. Typical IEPE sensors have a case that is electrically isolated from the IEPE electronics. As a result, connecting the sensor to the NI-9250 results in a floating connection even though the case of the sensor is grounded.

  • Page 6: Alias-Free Bandwidth

    Therefore, the amount of gain or attenuation at a given frequency depends on the data rate. Figure 1. Typical Passband Flatness in DC Coupling for the NI-9250 at the Maximum Data Rate 0.02 0.01...

  • Page 7: Data Rates

    ) controls the data rate (f ) of the NI-9250 . The NI-9250 includes an internal master timebase with a frequency of 13.1072 MHz. Using the internal master timebase of 13.1072 MHz results in data rates of 102.4 kS/s, 51.2 kS/s, 25.6 kS/s, 17.067 kS/s, and so on down to 267 S/s, depending on the decimation rate and the value of the clock divider.
  • Page 8 NI-9250 Getting Started (kS/s) Decimation Rate Clock Divider 17.067 14.629 12.800 11.378 10.240 9.309 8.533 7.314 6.400 5.689 5.120 4.655 4.267 3.657 3.200 1024 2.844 2.560 2.327 2.133 1.829 1.600 1024 1.422 1.280 1.164 1.067 1024 0.914 0.800 1024 0.711 0.640...
  • Page 9 When using an external timebase with a frequency other than 13.1072 MHz, the NI-9250 has a different set of data rates. Refer to the software help for information about configuring the master timebase source for the NI-9250 .

This manual is also suitable for:

Ni-9250