USB-5132 as gated integrator?

Greetings,
Can I use USB-5132 as a gated integrator?
I have a PMT signal with 1-10 kHz rep. rate. The signal itself lasts 2 us and I would like to slice this 2 us window into smaller bins and collect data in that specific window and integrate the signal.
I checked the manual, it looks like it does not have a built-in gated trigger mode. I am wondering if there is any wy around it...
Best regards
O.Birer

My problem is I could not figure out a way to sample the waveform within a gate. Can I use the rising edge to start acquisition and the falling edge to stop the acquisition?
(This is generic for all digitizers, not exclusive toe the 513x devices.)
Because digitizers/oscilloscopes take as granted that the window of time for which you wish to acquire is known at the time of the beginning of the acquisition, you cannot configure it to have a variable window size on-the-fly (without software intervention to stop and reconfigure.) This isn't done on the fly on any oscilloscope product I've ever heard of, from any vendor. In other words, the concept of "gating" an acquisition is not a concept natively handled by digitizers/oscilloscopes.
Work-arounds:
If you choose the largest possible gate time and set that to be your record length, then you can post-apply software to trim the data you don't care about.
If you can allow software/driver interaction with the instrument while your signal is generating, you can stop, reconfigure for a different record length, and re-start the instrument's acquisition again. Expect this could take a few milliseconds or more, depending on how you implement it.
In essence, I would like to time resolve the signal which lasts for 2 microseconds.
Is your signal repetitive? I can only imagine that acquiring several ~500ns windows of data with relative adjustments must mean your signal is repetitive.
Just for reference, see the Acquisition Engine for the USB-513x devices. You can see you will really only have two signals to work with to manipulate this device in hardware time: there is a start trigger (must be digital) and a reference trigger (can be analog or digital). You can send a "start" trigger or a "reference" trigger only to capture the constant amount of data which is (in some constant way) related to the trigger event you set.
National Instruments

Similar Messages

USB-5132 ext clock + Trig ?

Hi -
We need ~20 Mhz for 100mS samples, 8 bit , high clock accuracy with big (>3kV) isolation. We have been looking at a USB-5132 , with an optical-fiber to USB converter and supply 5V that floats with the source. We need it to sync with clocks to <10ppm, and while we could run PF1 from our isolated clock system, then we wouldn't have a trigger.We had been hoping to set up the 5132 to acquire whenever it saw a clock pulse, as we can gate or otherwise process our clock signals. I see from other posts though that the 5133 won't do continuous mode so probably not the 5132, eh ? Triggering from the inputs or in software is not an option, unfortunately (would have to trigger 500mS back) Also I had been hoping to find programming or detailed user manuals online but don't see them. Another option I suppose would be a 2 ch ethernet digitizer, but the low cost and ease of use makes the 5132 attractive, as this might be the first of a bunch more. Thanks for any input.
Alex

Hi Jennifer -
The page Matt pointed to, http://zone.ni.com/reference/en-XX/help/370592E-01/TOC6.htm , has the outline of a programming guide. Each link points to a valid page there, but I only found a bit on those pages, e.g.
http://zone.ni.com/reference/en-XX/help/370592E-01/digitizers/step_3-configuring_your_application/
At the bottom of those pages are links to "resources" with potentially interesting and useful stuff, e.g. from that page,
Resources
Array Measurements with the NI-SCOPE Measurements Library for National Instruments High-Speed - NI D...
NI-SCOPE Measurements Library for National Instruments High-Speed Digitizers/Oscilloscopes - - NI De...
Triggering with High-Speed Digitizers - NI Developer Zone
Which yesterday 404'ed but now point back to the Dev Zone main page. If I put say one of those titles into the search bar -
Browse
Search within results:
Triggering with High-Speed Digitizers
...Instruments high-speed digitizers to build...sampling with a high-speed digitizer and various... What is Triggering? A trigger...when the digitizer finds a valid...5124 Video Triggering for more...Fundamentals of High-Speed Digitizers High...Trigger off of with an NI High......
NI High-Speed Digitizers: Optimized for Automated Test
...resolution digitizer, the NI PXI...high-speed digitizers in particular...integration with other types...which NI high speed digitizers...timebase and triggering of several...problems with product quality...alignment with triggering. NI’s...to all NI high-speed digitizers, employs......
and 76 others. thee first two don't work today.
"Triggering With High Speed Digitizers" points to
http://zone.ni.com/devzone/cda/tut/p/id/4363
and "NI High-Speed Digitizers: Optimized for Automated Test " points to
http://zone.ni.com/devzone/cda/tut/p/id/7970
as do a bunch more down the row. Some work though. No the whole, not terribly helpful. Myself, I want linux c/c++ drivers and libraries, but if I have to I'll use (yuck) labview.
HTH
Alex

Usb sound output with integrated 100W amplif

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External reference for USB 5132

Hello,
I have a couple (hopefully) general questions about using an external reference clock on our USB 5132 digitizer. We want to lock it to the other oscillators in our system, all of which are presently locked to one 10 MHz reference. If I connect our existing 10 MHz reference to the PFI1 input, my questions are:
1. Is the 5132 now locked to our system? Or, do we need to specifiy in the setup software that we want to override the 5132's internal reference and rely entirely our external reference?
2. In order to have the best possible lock, do we need to tell the 5132 to sample at a frequency that is evenly divisible by 10 MHz (e.g. 20 MHz, 10 MHz, 5 MHz, 2 MHz, etc.)? Similarly, are we worse off if we want to sample at say, 13 MHz?
Thanks for any thoughts.
Best regards,
Penny
Solved!
Go to Solution.

Hello Penny,
1. Yes the 5132 is locked to your reference system 10MHz clock (with some offset due to delay in the time it takes to transmit the clock signal from your system to this USB device) if you selected the PFI line as the source of an external timebase. Please take a look at the following example Help>>Find Examples>>Hardware Input and Output>> Modular Instruments>>NI-Scope>>Features>> niScope EX External Clocking.vi.
2. No, although I would expect that if you enter in 13MHz and your device was not capable of doing this it would coerce it to the closest value. I would suspect that only integer divide downs from the clock in question are valid such that 12. 5MHz is the value it would coerce to if you were to request a 13MHz value (with a 50MHzexternal clock). The 5132 can not do RIS so sampling at 20MHz with a 10MHz SampleClock Timebase Source is not feasable.
Regards,
Izzy O.
Applications Engineer
National Instruments
www.ni.com/support

Utiliser un câble coaxial 75 Ohms avec ni usb 5132

Bonjour,
dans le cadre d'un projet, je dois acquérir des signaux analogiques vidéo et l'une des contraintes et d'utiliser des câbles coaxiaux (BNC) 75Ohms (d'un côté parce que c'est de la vidéo et de l'autre car ils sont disponibles).
Une des solutions matérielles retenues (pas par moi) est le NI USB 5132, notamment au vue de son faible coût.
Mon souci est que l'entrée de ce numériseur est en haute impédance (1Mohm), ce qui n'est donc à priori pas adapté puisque dans le cas de transmission de signaux vidéo l'adaptation des lignes est primordiale.
Mais peut être suis-je dans l'erreur?
Sinon, existe -t-il un moyen simple d'adapter mon entrée de numériseur?
Merci
Rainette

Bonjour,
Effectivement, je pense qu'il faudrait utiliser un adaptateur d'impédance, disponible sur des sites spécialisés. Ou alors créez votre propre circuit imprimé.
Cordialement,
Benoit S. - Field Sales Engineer
Certified LabVIEW Developer
Certified TestStand Developer
National Instruments France
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Why can't I get frequency info from NI USB 5132

Hello
I use NI USB 5132 and try NI Scope example measurement library.
I wonder why I can not get frequency info of input signal.
Thanks
Solved!
Go to Solution.

Thanks for kind responses.
I am using LabVIEW 8.6 on Windows vista and an example called niScope EX Measurement Library.
I am measuring the frequency using a clone called niScope Multi Fetch Measurement Stats.
I am using a pulser producing 60 3V-pulses /sec. When using Soft front panel. sometime I can measure the frequency but sometimes it shows "error."
By the way, I can't see pulse signal from the example but I can see the signal using SCOPE soft front panel.
the error message says
Possible reason(s):
Driver Status: (Hex 0xBFFA2002)
Unable to perform desired measurement operation.
Waveform did not cross the middle reference level at least 3 times. Check the low, mid, and high reference levels. If you are reading a waveform that has a small amplitude, you can use the attribute Hysteresis Percent to reduce the hysteresis thresholds.
Please let me know if more info is needed
Thanks
Cynitha

Usb-5132 slow

Hi everybody,
our application requires collecting short signal waveforms (about a few thousand points at 50 MHz sampling rate) with repetition rate at least 20 Hz. We were happy before with Labview 7.1/NI Scope 3.4/ USB-5132/ Low end Dell laptop combination. The experimental setup allowed us easily collect data at about 100 Hz repetition rate.
Our data acquisition program is based on standard example program "niScope EX Configured Acquisition" from "C:\Program Files\National Instruments\LabVIEW X.X\examples\instr\niScope NI provides with every "NIscope" software.
We bought "Labview 2010 Developer Suite", which we installed on newest "Dell Precision M 4500" laptop. But we found USB-5132 now allows us collect data waveforms only at about 10 Hz repetition rate - 10 times slower then with old labview 7.1!
I tested the data acquisition speed with standard "niScope EX Configured Acquisition" program I mentioned above with the trigger set to "immediate" and found the same difference: the sample from NI Labview 7.1 works about 10 times faster compared to new Labview 2010 when the same usb-5132 digitizer is used.
Like I already mentioned, we need at list 20 Hz repetition rate, better more, and we would like to keep easy-to-use USB-5132 digitizer. Can we make it work faster with new Labview?
Thanks,
Yuriy.

Hello Yuriy,
My apologies for not seeing this post a few days ago when you originally posted, but Kyle recently brought it to my attention (I usually monitor the High-Speed Digitizers board but don't always catch posts on the LabVIEW board).
I have done some benchmarking with various versions of the NI-SCOPE driver and a USB digitizer. Unfortunately, it appears that there is an issue in NI-SCOPE 3.6 and later which is causing the fetch (read) rates to be drastically decreased with the USB digitizers. We are implementing a solution to correct this problem and get the fetch rates back to their previous performance values. NI-SCOPE 3.8 will address this problem, though that version will most likely not be ready for release until late Q1 2011. In the mean time, the best option is to downgrade to NI-SCOPE 3.5.2 or earlier if it is possible for the specific LabVIEW version in use. If this downgrade is not possible, please contact National Instruments support by phone or email with your specific details and we will work with you to determine the best solution.
We apologize for any inconvenience this has caused and we appreciate your help in informing us of this issue. Please let me know if there is anything else I can do to help out!
Regards,
Daniel S.
National Instruments

Ripple Measurement using USB 5132

Hello,
I am trying to use NI USB 5132 to measure ripple (Vp-p) at the output of a DC power supply.
I not familiar with digitizers and having problems using the NI-Scope functions to create a VI that can measure ripple.
I have looked the example VIs, but not sure how to change the settings on the Vertical and Horizantal functions so that they work for me.
An help or inputs on this matter will be greatly appreciated.
Thanks.

The examples are as I recall pretty complete. What is the exact issue you are having?
Mike ...
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"... after all, He's not a tame lion..."
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Digitizer / Oscilloscope USB-5132 Internal Averaging Option?

The DS5132 USB digitizer / scope from NI does not support multi record acquistion. Multi record acquistion would allow to internally save multiple measurements triggered by hardware triggers and therefore significantly reduce the overhead that comes in when the unit is read out via USB. My question is, does the DS5132 driver support some kind of hardware averaging though? A lot of scopes have an averaging mode and it would be great if I could internally average waveforms before reading them out. That said, I am not sure how comercial table top scopes handle averaging and it might be just done via software.
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Erik,
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Error 224229 DAQ card NI USB 5132

Dear Sir/ Madam,
Recently two of our DAQ 5132 cards are showing this error, it had been in use for resonance frequency measurements using Laser Doppler Vibrometer through a LabView program interface. Kindly provide suggestions to rectify it.
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Attachments:
DAQ5132 Serial no.ECF4B4 Error.jpg ‏120 KB

Hi All-
Actually, if you are using Windows O/S then you should program your USB-6008 using NI-DAQmx 8.0. Instructions for configuring your device for use with NI-DAQmx are available in this KB. After making this change you may want to convert any NI-DAQmx Base VIs to NI-DAQmx using the NI-DAQmx Base to NI-DAQmx Conversion Utility. You can also use any supported LabVIEW examples from the NI Example Finder (Help>>Find Examples) by browsing to Hardware Input and Output>>DAQmx.
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Cannot boot from USB/dvd-drive on Satellite Pro M10

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PCMCIA 5102 not compatible in windows 7, USB equivalent / Tektronix TDS 2024B usage

Hello,
I am given a 8.5 labview program that works in windows xp and uses PCMCIA 5102 digitizer card for signal acquistion and showing it in graphs.
we are converting that code to LV2012 and win 7.
i just found out that the pcmcia 5102 is not supported in win 7 anymore and is showing niscope error and cannot install any drivers for it.
we are using the 4 channels on it (ch0,ch1, trigger,clock) and these cards are also obsolete.
is there a USB equivalent for it or even 3rd party with labview drivers, ni has all the usb new ones that have only 3 inputs. how to solve this problem?
we have tektronix tds2024b, how can i use this as an equivalent to PCMCIA 5102 and acquire and show on labview graphs real-time. I didnot program any instrument before ..
one thing observed is that the oscilloscope graphs cho, ch1, trigger nicely even though i removed the clock input. i donot understand the use of clock input if it can graph all the three signal as expected without clock. is that clock only required when using a NI digitizer?
plz help.
Thanks

Hey freemason,
You are correct that the PCMCIA 5102 is not compatible with Windows 7, however we do have the USB-5132 and USB-5133 which have a USB connection and should be (if the program uses the NI-SCOPE driver) a drop-in replacement. They do not have the PFI lines that the 5102 does, but it sounds like you were only using that as an external clock and the 5132/3 have a 50MHz/100MHz internal clock respectively that is both faster and more accurate than the internal clock on the 5102.
There are also PCI options if you do need those PFI lines.
As for whether you can use the Tek TDS2024b as a replacement: As Dennis said, unless you used the IVI driver in the program, there will be a lot of work to convert the code to use that scope. There is a driver for it, and if you're ever interested if a driver exists for a 3rd party instrument, you can go to the following link and search; the Tektronix TDS series is first in the list of most popular drivers.
http://www.ni.com/downloads/instrument-drivers/
Finally, that PCMCIA card has a 20MHz clock inside of it that you should be able to use for a sample clock, so an external clock isn't required. If you had a more accurate clock you wanted to use or maybe if you wanted to synchronize the card with another one, that would be the main reason to use an external clock source.
Hope this helps!
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Applications Engineer, National Instruments
CLD, CTD

Ni scope 5132

Hi, can I get measure with ni scope 5132 from the two channel in the same time, I tried to do that with labview, so one channel worked but the other doesn’t , can you help me thanks

Hello
Thank you for bring this issue to the forums. Since your card is a USB-5132 it has 2 simultaneously sampled channels with 8-bit resolution and you will be able to measure a signal from both channels at once. Please open LabVIEW and open the example niScope EX Configured Acquisition. You can find this example in LabVIEW, go-to Help>Find Examples.. then search for "niScope EX Configured Acquisition." When you open this example make sure to choose the right resource name and, to select multiple channels write "0:1" in the Channel Name(s) control.
Let me know how this works out for you.
Thank you,
Vimal Fernandez
ELP Engineer
Applications Engineering
National Instruments
Applications Engineer
National Instruments

USB-5132 as gated integrator?

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