Controlling a lock-in amplifier with labview

Hi there, Does somebody know a good website to download labview code to connect a lock-in (Signal Recovery, Model 5210) with GPIB to the computer? I'm still learning to program in labview, Thanks, -Tod

Hello, i'm novice in labview, i've just installed the 5210 lock-in amplifier's driver and i don't know how to use it in my program, can you help me please by giving me an example of a vi using this kind of driver for example? thank you in advance

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Poll - Which Version Control Software Do You Use With LabVIEW?

I wish the forums had a poll feature. I created a poll in the developer community - Which Version Control Software Do You Use With LabVIEW?
http://decibel.ni.com/content/polls/1818
Edit: I just saw that there already is a poll for that
http://decibel.ni.com/content/polls/1050
=====================
LabVIEW 2012

julieann wrote:
You can use a source control provider to share files among multiple users, improve security and quality, and track changes to shared projects. Use LabVIEW with third-party source control providers so you can check out files and track changes from within LabVIEW. See info. here.
Looks suspiciously like someone trying to increase hits on their blog. A coincidence that it was posted the same day as the blog post?
Message has been reported to the moderator. Laura can decide whether or not it's appropriate.

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that is mean
how coul i control the usb missle launcher with labview
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Missile Launcher.zip ‏2384 KB

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Lock-in amplifier with USB-6221

Hi,
I was just wondering if it is possible to set up a lock-in amplifier with a USB-6221 DAQ system.
Thank you.

Hi johndoe117,
Because the USB-6221 does not have dedicated ADCs for each channel, it is not recommended that we try and implement a Lock-In Amplifier. I would recommend using one of the DSA cards instead. I have included a KnowledgeBase article below that details what we look for when we want to implement a Lock-In Amplifier for some further information you may find helpful.
Lock-In Amplifier considerations: http://digital.ni.com/public.nsf/websearch/EBAADBD271ADFEC586256C86007B63F9
Regards,
Jason D
Applications Engineer
National Instruments

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Control multi dynamixel AX-12 with LabView

I need help controlling 2nd Dynamixel AX-12 from LabView based on "Dynamixel Sync Write Example" code.
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Attachments:
front.PNG ‏53 KB
block.PNG ‏38 KB

Thanks, Drew
You are correct that the code is from NI example less while loop. I did repeated runs, results are the same as two single runs.
I just traced the executions and recorded header and checksum parameters for ID #1 and #2 for debugging. I placed two sets of positions to separate ID#1 and ID #2:
         Control      Dial      Position      Manual pos
ID#1      0           off         60              160
ID#2      1           on        100             200
There is only one set of header and checksum value being passed in the program. That might explain only one set of position (ID#1) was set, the other one (ID#2) was ignored.
Does that make sense?
Anne
Attachments:
111026 dynamixel.pdf ‏198 KB

How to Control the Valves and Pump with Labview?

I have started a new project where I have to control the valves operation through Labview 2009,using PXI 1031, NI 5105(Digitizer) and NI 6251(M-series DAQ).
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Lock in Amplifier with high sampling rates on non DSA hardware

Hi,
I plan to use the NI lock-in amplifier startup kit to detect a harmonic signal of around 400kHz. I plan to use the digitizer PCI-5105 ( I have not purchased it till now, but I will soon). I have downloaded the lock-in start up kit and unzipped the folders and was hoping to give it a trial run with a NI USB-6363 however the vi does not open because it says there are a lot of subvi's missing (subvi's like AI read.vi, AI clear.vi, etc.). Also the LockinDemo.vi seems to use NI 4472 as a default hardware. My questions are 1) Can the NI lock-in-amplifier startup kit be used with PCI-5105 and 2) can the missing vi's be downloaded from somewhere or be replaced with other blocks on my own?
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Avishek
Solved!
Go to Solution.

Dear All
I have plotted waveform graph frequency vs amplitude of real time signal. I am using measurement computing USB1208FS. I used fft.vi to plot the graph and get the waveform which is attached. On X-axis frequency is form 0 to 0.49HZ. But I want to increase that from 50 to 500 hz. When X-axis scale is in auto select mode then it automatically adjust to 0 to 0.499 hz. When I deselect autoselect mode and edit x-axis from 50hz to 500hz then no waveform comes on display. I have set the sapling rate of 1024 and count of 500. Please guide me how can i get the desired waveform graph.
The waveform which i plot is shown in attch1 and my desired waveform is shown in attach2.
waiting for response
Kind Regards
Urfee
Attachments:
result that i got.JPG ‏17 KB
desired values for scales.JPG ‏35 KB

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Has anyone done any control of an ABB robot with labview and robotstudio?

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ABB_IRC5 Robot Info.vi ‏59 KB

Where can I find nice controls/indicators symbols to use with LabVIEW, like Valves, pumps, storages, etc, Free ?

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Thank You

Hi N.K.,
I found an example which is using DAQmx. Have a look at:
Multi Channel Count Lock-In Amplifier with DAQmx
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=042319214C65627AE0440003BA7CCD71&p_...
Also please look here, because I the 6016 does sampling not simultaneous!
Lock-In Amplifier Startup Toolkit Compatibility with Non-DSA Hardware
http://digital.ni.com/public.nsf/websearch/EBAADBD271ADFEC586256C86007B63F9
Regards,
Andi
~~~ Logic is a systematic method of coming to the wrong conclusion with confidence ~~~

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Hi everyone,
I've been successfully using the Lock-In Amplifier to do live data processing. The processed Lock-In outputs and the frequency values are then saved. Recently it has turned out that the real acquisition capabilities needed mean that online processing is not possibe. (As 4 channels are being simultaneously sampled each at 4Mhz and acquiring for several seconds.) I have built the Lock-In Amplifier into an offline processing VI where I strip out the arrays for Channel 0 (Signal) and Channel 1 (Reference) and send chunks of data to the Lock-In. I wanted to check that the Lock-In doesn't have any problems working offline? Are there any other things I need to know for offline processing?
Many thanks

Hi,
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All the best,
Applications Engineer

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Hello!
I would like to implement a lock-in amplifier in labview (version 8.5). I understand that there is a developer kit for the LIA available, and have checked it out; however, it is incompatible with my equipment.
I have a usb 1608fs card that I am using for for digital to analog conversion, which has a max sample rate of 16000 hz for two channels (signal and reference). The signal I am trying to lock in on is between 5 and 10 hz. The main contribution to the noise is 60Hz noise from the air, which shouldn't be a problem.
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Regards,
MB

Here it says the minimum rate is 50kHz. Sorry, but ther is no option to change that.
Also look at Lock-In Amplifier Startup Toolkit Compatibility with National Instruments Hardware.
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Controlling a lock-in amplifier with labview

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