PCI-7833R RTSI Bus

I'm in the process of integrating a second PCI-7833R into my project (a towable wideband echo repeater for submarine target emulation).
The first board does the actual echo repeating (acquisition, trigger filtering, and detection, etc.)
The second board will do optional signal generation and transmit equalization.
Could I use the RTSI Bus as a data bus between the two boards? The project manager seems to treat them as general purpose IO.
Where do I find the pinout and function description for the RTSI Bus Connector as this info is not in the PCI-7833R documentation.
Thanks

Hi,
Yes, you can use the RTSI Line. However, you will need to connect the two 7833R board together through the RTSI connector using RTSI cable.
The user manual for 78XX describes how to access and use the RTSI line on Page 36 (RTSI Trigger Bus). This knowledge base entry also provides the RTSI connector pinout for National Instruments PCI boards.
Tunde

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When does a clock signal appear on a RTSI bus using DAQmx for a PCI NI-4472 DSA?

Hello,
I am trying to synchronize several PCI NI-4472 DSA boards over a RTSI cable using MATLAB. I have read that with DAQmx it is not necessary to use DAQmxExportSignal to put the clock signal on a RTSI line provided that the RTSI cable is registered in MAX and that the DSA cards are listed as being connected to the RTSI device. Apparently, the DAQmx drivers are supposed to route the clock signal between the cards as required….
So I have done the above and see in MAX, in the device routes tab for Dev1, that
/Dev1/ai/SampleClock uses RTSI6
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Hi
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buffered, looping output with one pci-6534 card. I am now adding
a second 6534 card that I need to sync to the first card via the RTSI
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internal. Does my slave need to be set to RTSI connection, or,
once I have shared the clock signal over the RTSI bus, is that
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I apologize it this question is confusing. Unfortunately, so is the issue.

Hello bwz,
When you are performing synchronization across the RTSI bus you need to specify that the slave device should get its clock signals from there. You would use the digital clock config VI to do this. If you look in the example finder, you will find synchronization example VIs that do the same kind of thing for analog input. To find the examples, open the example finder by going to Help >> Find Examples >> Hardware Input and Output >> Traditional DAQ >> Multiple Device.
If you are just getting started developing your application, you may want to consider using DAQmx. There are many more examples available to look at for this type of synchronization. To find these examples in the example finder go to Hardware Input and Output >> DAQmx >> Synchronization >> Multi-Device. To use your PCI-6534 with NI-DAQmx, you must have version 7.4 or later. The newest version is DAQmx 7.5. You may also want to look at this tutorial about synchronization with DAQmx.
I hope this helps!
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I am trying to add my FPGA (PCI-7833R) to a RTSI cable in MAX. The cable is connected in the chassis, and both the device and the cable appear in MAX. However, when I right click on the cable and select "Add device to NI-RTSI cable," the FPGA does not appear as an option. What am I missing?
Attachments:
Untitled.png ‏161 KB

Hi PTARlab
Thanks for posting.
It's not possible to add the RTSI card to an R series card using MAX, as this is really configuring DAQmx devices not FPGA ones.
Instead, you can gain access to the RTSI lines directly in a Project Explorer. After you have added your PCI-7833R to a project, right click on the FPGA target and select New...>>FPGA I/O. In the next window, you can select all of the RTSI lines and add them to your project.
Kind Regards
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Thank you very much indeed!
Unfortunately it doesn't really work... I cannot use the DI options since my A/D card (NI 4474) does not support DI/DO... When using the other option (CWDAQTools1.RouteRTSI) I keep getting an error message that this command is inapropriate for my device (even though it does have a RTSI bus and allegedly it also supports time sharing...)
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The Device is a PCI-MIO-16XE10.
Thanks.

The RTSI bus is designed for sharing timing and control signals between boards. By timing and control we mean clock signals, digital triggers, etc. RTSI is not meant to pass I/O signals, even digital I/O signals. Thus, it is not possible to connect one of the digital I/O lines on your board to a RTSI line. A way to accomplish what you would like to do might be to toggle GPCTR0's Output and connect that signal to the RTSI bus. You would do this by configuring the counter to perform event counting and counting down from a specified number of pulses on the source pin and configuring the counter's output to toggle on terminal count. You could also configure the counter to perform pulse train generation or single pulse generation. To connect the output to the RTSI bus, yo
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Regards,
Erin

Is the RTSI bus cable interface a direct 1 to 1 pin connection?

I am using a straight ribbon cable to connect the RTSI bus between two boards (AT-MIO-16E-1 and PCI-6602), but I am not able to receive the signal on the PCI board. (I am using RTSI0 as a gate for the counters on PCI-6602).

yes,
for my understanding the RTSI bus is only as bus with a 1-1 connection usefull, also i build this cable in the past by myself (and it worked).
Have You checked the description of both cards, there might be a difference in using of RTSI and what is needed as source for gate?
good luck
Hans

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Hi Jerry-
Ed's post here has some info that seems related to your question.
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hoffe das hilft weiter

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Quote
Originally posted by buddie
What OS are you using?
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Quote
Originally posted by alpes
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