how to trigger the 6115 and 6030E with the 5411

[RemcoB]

We use the 5411 to generate a sweep for our radar. This radar returns it's signal to the 6115. Other devices also generates a signal wich are going to the 6030.
The data of the radar and the data of the other devices has to be read out parallel by the DAQ devices at the beginning of every sweep. What we need is a trigger from the 5411 to start and synchronize the DAQ devices.

[Shan]

I am doing a very similar process. I'm using a 5411 to send a chirp to one acoustic transducer and sampling several others on the 6115. I'm using the RTSI bus on a PXI chassis. If you've got PCI, then you'd need a RTSI cable (from NI).

First I'm defining a marker on the first point of the arb signal ouput. That's done in the sequence definition. Next, I generate a trigger on the RTSI bus when the marker goes out. Lastly, I start the AI Read in trigger mode, with the RTSI channel as the source.

The attached zip file contains one vi and a jpeg to show how I'm generating the RTSI trigger from the marker, and how the AI read is configured.

~Tim

[Jace C]

Shan,
Just out of curiousity, what kind of acoustic transducer are you using?

[RemcoB]

A question about youre program: Are the marker signal and waveform two seperate signals or do they use the same output channel?
If that is so, I can't use it because we need a clean sawtoothsweep for our radar.

[Shan]

The marker is a separate signal that can be routed to the RTSI bus, as I am doing, or to the front panel connector on the PXI card (by default I believe). In the PXI version, you'll have to check the pinout assignment.

~Tim

[Shan]

It's a piezoelectric ceramic (PZT-4 I believe). The current ones we're using are ~200 kHz, but we may go as high as 2 MHz.

~Tim