how to use an analog output to trig analog input acquisition

[Popo]

Hello,

I'm working with a NI USB 6259 DAQ.

I want to make a triggered acquisition. For that I want to use an analog ouptut an the 6259 to trigger my acquisition on 12 analog input of the same 6259 DAQ.

Is there any example where I can find how to do that?

I have no difficulties to acquire the 12 analog input with an external anlog trig signal but I'm in trouble to do that with the 6259 DAQ.

Please find my triggered acquisition example.

Thanks

Philippe

[Mohamed H]

Hello,

If I have well understood, you want to generate an analog output from your USB-6259 to trigger 12 analog input of the same device ?

I need more information about LabVIEW and NI-DAQ driver versions that you are using?

What kind of signal do you want to generate on the USB-6259 device?

Best Regards.

[Popo]

I'm using Labview 7.1 and traditional DAQ mx.

rgds

philippe

[Mohamed H]

Hello Popo,

You are using LabVIEW 7.1 but I do not understand the version of the driver you use. NI-DAQmx and NI-traditionnal DAQ are different. You can verify the version of your driver in Measurement & Automation Explorer in the software tab.

Regards.

[Popo]

Sorry,

Ni-DAQmx 8.3.0.f.0

[Mohamed H]

Hello Popo,

You can use two example in LaVIEW 7.1 :

1) Cont Acq&Graph Voltage Int Clk.vi allows you to make an acquisition on inputs of your device after an analog trigger from the APFI 0 line.

2) Cont Gen Voltage Wfm Int Clk.vi allows you to generate a waveform on an output of your device.

Connect the output of the device to the APFI 0 of the device: Refer to NI-DAQmx Help >> NI-DAQmx device terminals help to have more information about all terminals of your device.

Start the generation VI and then start the acquisiton VI.

You can combine the two VIs by a single VI but you have to make sure that you start the generation before the acquisiton. Please, refer to Multi-Function-Synch- AI-AO.vi to have an example.

Regards.

[Popo]

Thanks Mohamed ,

I will play with these examples.

Regards

Popo