How to transfer data between computer and circuit using labview?

[vishhh]

hi.

We have a circuit named Co-incidence detection circuit.

Output from this circuit is pulses.

i want to count these pulses using labview program.

How can i do this?

Or How to see waveforms from function generator on computer using labview?

Can i uae Multisim for this purpose?

[CoastalMaineBird]

1... Go here:  http://www.ni.com/dataacquisition/

2... Choose a board that meets your needs. The general-purpose boards will offer a couple of channels of pulse counting, in addition to 16 or so channels of analog voltage acquisition for looking at waveforms.  There are special boards dedicated to pulse counting, if you need more.

3...  You can sling a couple of VIs together for a quick-n-dirty look at your data, or a bit more complication gets you a professional-quality program with recording and analysis and display.

4... Wear your halo proudly.

[vishhh]

hey

i don't want to use DAS/ DAB.

Can't i directly connect the output of the circuit to the serial or parallel port and use MAX for checking the input?

[vt92]

For the pulses, you can use a DAQ card: http://www.ni.com/dataacquisition/   Depending on the signal level(s) of your pulses, you may need digital I/O or analog input.

If your function generator has a GPIB, serial or USB interface, you can communicate with it using LabVIEW. 

[vt92]

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nirmalvishal wrote:

hey

i don't want to use DAS/ DAB.

Can't i directly connect the output of the circuit to the serial or parallel port and use MAX for checking the input?

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Take a look at this thread: http://forums.ni.com/ni/board/message?board.id=170&message.id=254900&requireLogin=False

or do a search for parallel port DAQ.

[IanW]

If your signals are ac, and suitable levels and frequencies, you could connect to the L and R soundcard inputs. There are vi's for getting and analysing the sound inputs.

[CoastalMaineBird]

Can't i directly connect the output of the circuit to the serial or parallel port and use MAX for checking the input?

 No.  Serial and Parallel ports are for digital signals.  If you want to look at a waveform, you have to have an analog-to-digital converter somewhere.  That's what the DAQ boards are for.

MAX is a tool for operating the DAQ boards, but it has to have a device to work with. 

[vishhh]

hi

inputs to my circuit are pulse trains while output is also a pulse train.

Do i consider them as Analog or Digital?

how to connect output to sound card inputs?

[vishhh]

Hi, thank you VT

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 i used the link given by u:http://forums.ni.com/ni/board/message?board.id=170&message.id=254900&requireLogin=False

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and i also ckechek the parallel port example.

when i am giving TTL input to the pins 11/12/13 of Parallel port then it is changing the status continuously.

i think  i would work for me.

thanks again.

if i found other difficulties then will contact u.

bye

regards,

vishal

[rolfk]

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nirmalvishal wrote:

Hi, thank you VT

---

 

 i used the link given by u:http://forums.ni.com/ni/board/message?board.id=170&message.id=254900&requireLogin=False

---

and i also ckechek the parallel port example.

when i am giving TTL input to the pins 11/12/13 of Parallel port then it is changing the status continuously.

i think  i would work for me.

thanks again.

if i found other difficulties then will contact u.

bye

regards,

vishal

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Just don't forget that parallel ports are starting to get a destinct entity in nowadays computer landscape. So you may be able to get one for now but whoever is going to have to get your application to work again over a year or two may not feel so happy about your choice.

Rolf Kalbermatter