Transmit signal from PXIe-6341 to PXIe-7962R

[OliverZT]

I am designing a scanning image system. PXIe-6341 and PXIe-7962R are on PXIe-1073. PXIe-6341 is used to collect the trigger signal from pin AI0; PXIe-7962R is responsible for processing image data. However, I do not know how to transmit trigger data from PXIe-6341 to PXIe-7962R. I cannot use PXI_Trig0 in FPGA correctly. 

I think it is an easy question, but I really cannot find a suitable manual on NI website. 

Are there some demo can illustrate the way to transmit signal from PXIe-6341 to PXIe-7962R?

[Tepig · Accepted solution]

Hi Oliver, yes it is not difficult.

DAQmx

FPGA

[OliverZT]

Great. Thank you so much!

[OliverZT]

Hi Emboar,

Thanks for your answer. I am a little bit clear about how to connect with DAQmx and FPGA.

I have other questions. From my past experience of other embedded engineering experience, I am sure they are simple problems. However, I cannot find suitable manuals at NI website. Maybe they are too simple questions 😞 

(1) In my design, the destination term is indeed PXI_Trig0, but the source terminal it should be AI0, an analog input. I need to detect the rising edge of the analog signal at AI0. Is it still right to use the source terminal as StartTrigger in your image?

(2) I need to detect the rising edge at the speed up to 80 MHz. Do something else modules in DAQ need to be set up?

(3) 

The input signal to AI0 is a pulse signal with 1 Hz, 5 Vpp. The result shows the 'signal' light is zero.

Host Design

FPGA Design

Result

[Tepig]

You don't generate any trigger signal on DAQmx, FPGA doesn't detect it never.

For example,

Generate Pulse on Counter --> Counter signal is routed to PXI_Trig --> FPGA read PXI_Trig

Try it on.

[charlie87]

Hi,

I have similar problem with PXIe-6341 and PXIe-7971R on PXIe-1088. Is it possible to get directly a signal from the FPGA PXIe-7971R to the analog output on the PXIe-6341 ?