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How to choose NI digitizer

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How to choose NI digitizer

  1. I want to look at 50 ns to100 ns width pulses, can I infer from this data alone what spec digitizer I should be looking for ?
  2. Also, is there a difference if I choose NI-Oscilloscope PXI module from NI-Digitizers. Because right now, I am using a Tektronix TPS2024 200 Mhz and 2 Gs/sec oscilloscope to view my pulses, I would like to develop an application in LabVIEW to look and characterize these pulses.
  3. I know that there are other high speed digitizers in the market: Signatec, Linear Technology, Keysight,  etc. Can I control any of these boards with LabVIEW using DAQmx?

This is my first time with National Instruments products, I really find the website difficult to browse through. Google search seems more straight forward to browse NI products.

 

Any advise is much appreciated.

NI System Configuration:
- NI PXIe-1071, 4-Slot 3U PXI Express Chassis , 1 GB/Slot throughput, Part Number: 781368-01
- NI PXIe-PCIe8381,x8 Gen2 MXI-Express for PXI Express Interface,3m, Part Number: 782522-01
- PXIe-5160 PXI Oscilloscope, 500 MHz, 10 bits, 2.5 GS/s, 2 Channels, 64 MB, Part Number: 782621-01
- Astronics PXIe-1209 2-Channel, 100 MHz PXI Pulse Generator, Part Number: 785033-01
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Re: How to choose NI digitizer

Hi mariasuku,

 

I hope this helps answer some of your questions:

 

  • It depends on what you are hoping to see from those pulses. Here is a white paper that explains different things you should look for when selecting a digitizer/oscilloscope:

 

Top 10 Things to Consider When Selecting a Digitizer/Oscilloscope

http://www.ni.com/white-paper/4333/en/

 

  • Largely digitizers and oscilloscopes are the same thing. So you should choose based on your specs.
  • No, not with DAQmx.  There may be instrument drivers for these devices found here that you can use with LabVIEW. Also some devices have IVI drivers that you can use in LabVIEW.
    1. As a side note, our digitizers/oscilloscopes don't use DAQmx, they use the NI-Scope API.

 

I hope this helps!

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Re: How to choose NI digitizer

Thank you for the white paper, I prefer to stick with NI products for now for it seamlessly connects via LabVIEW.

 

If I want to generate pulse wave with programmable duty cycle, width, amplitude, rate, etc. what should I lookout for ? Timers/Counters modules or something else ?

NI System Configuration:
- NI PXIe-1071, 4-Slot 3U PXI Express Chassis , 1 GB/Slot throughput, Part Number: 781368-01
- NI PXIe-PCIe8381,x8 Gen2 MXI-Express for PXI Express Interface,3m, Part Number: 782522-01
- PXIe-5160 PXI Oscilloscope, 500 MHz, 10 bits, 2.5 GS/s, 2 Channels, 64 MB, Part Number: 782621-01
- Astronics PXIe-1209 2-Channel, 100 MHz PXI Pulse Generator, Part Number: 785033-01
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Accepted by topic author asukumari
01-17-2018 05:31 PM

Re: How to choose NI digitizer


@mariasuku wrote:

 

If I want to generate pulse wave with programmable duty cycle, width, amplitude, rate, etc. what should I lookout for ? Timers/Counters modules or something else ?


Start here:

http://ni.com/signalgenerators

 

If you get a PXI waveform generator, like the PXIe-5413, PXIe-5423, or PXIe-5433, you can control amplitude, frequency, and duty cycle of a square wave using Standard Function mode of the NI-FGEN API:

 

http://zone.ni.com/reference/en-XX/help/370524T-01/TOC341.htm

 

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Re: How to choose NI digitizer

Thank you, starting from your suggested modules, I also had a look at the Model: Astronics PXIe-1209 [Part Number: 785033-01].

NI System Configuration:
- NI PXIe-1071, 4-Slot 3U PXI Express Chassis , 1 GB/Slot throughput, Part Number: 781368-01
- NI PXIe-PCIe8381,x8 Gen2 MXI-Express for PXI Express Interface,3m, Part Number: 782522-01
- PXIe-5160 PXI Oscilloscope, 500 MHz, 10 bits, 2.5 GS/s, 2 Channels, 64 MB, Part Number: 782621-01
- Astronics PXIe-1209 2-Channel, 100 MHz PXI Pulse Generator, Part Number: 785033-01
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