DAQ

[Syegg]

Hi friends,   
                i'm doing a project by converting TTL signal to NIM signal. now, i need to interface the output of the project with PC.the data acquisition is just to show the wave form in the waveform graph. the voltage for NIM for logic 1 is -1V and logic  0 is 0.2 V. kindly wanna ask, what is the next step i going to do for the interfacing part.

my question
1. what i gonna use for the DAQ? digital input or analog input? if any of them, what is sub DAQ i going to used?
2.im using labview 6i to do the interfacing and daq card PCI-6024E 68 pins.but i used the converter to change the pin from 68 to 50 pin and the  connector block  for DAQ.

looking forward to hear from you guys. thanks a lot

I'm newbie of Labview and maybe i asking some kind of stupid questions. anyway, i'm desperate for help. thanks.

best regard

[NI-Bongo]

Hi Syegg,

The PCI-6024E is TTL compatible, which would allow you to read in TTL signals via a digital input.  To read a NIM signal, you would need to use an analog input.

I assume because you are using LabVIEW 6 that you are programming with the Traditional NI-DAQ driver version 7.1 or earlier (or 7.2 if you have LabVIEW 6.1).  If you don't have it installed already, you can do so here:

Traditional NI-DAQ 7.1
http://joule.ni.com/nidu/cds/view/p/id/106/lang/en

To find example programs for analog input, look in this directory on your machine:
C:\Program Files\National Instruments\LabVIEW 6.0\examples\daq\anlogin\

If you let me know a bit more about your application, I can direct you to a more specific example.  What sampling frequency do you require and how many channels will you be acquiring at a time?

[Syegg]

hi, thanks for reply.
first of all, i need to read 2 signals in 2 different channels.
im using the 50 pin E serries connector, and the channel for TTL is pin 25 , DIO 0, and for NIM is analog channel pin 3.
i need to put the input singal into 2 diefferent waveform graph and another 1 is comparison of 2 signals in a waveform graph which i bundle waveform graph 1 and waveform 2.

thanks for help man.

regards,
chang.

[NI-Bongo]

Hi Chang,

For your application, I would recommend starting with the example called "Continuous CDI with AI (E).vi" found in:
C:\Program Files\National Instruments\LabVIEW 8.5\examples\daq\digital\E-series.llb

Try playing around with it and see what you can come up with.  Let me know if you run into any bumps as you customize it for your application.