Guidance Needed: Connecting 16 AI Channels (RSE Mode) Using NI 6363X BNC and Screw Terminals

[Hasham622x]

Hi,

Firstly, I apologize for any disturbance caused by my message. I am currently trying to collect data from 16 AI channels (RSE mode) with an external trigger on APFI0.

So far, I have successfully collected data from AI0 to AI7 using the BNC terminals. However, I am facing confusion regarding the connections for the remaining channels. On the BNC panel, it appears that after AI7, the next available AI channels are AI16 to AI23, while AI8 to AI15 seem to be missing.

On the screw terminal side, I noticed that the pins are labeled as P0.x, P1.x, P2.x, and so on, which does not clearly correspond to the AI channels. For the external trigger, I have connected APFI0 and AI GND on the screw terminal.

Could you please guide me on how to connect and access AI8 to AI15 (RSE mode) using the available screw terminal pins?

Thank you in advance for your support and guidance.

[Ahmed99]

Hello Can you let me check your program via zoom ? 

[Hasham622x]

Hi,

Thanks for your reply. I need help in connections of AI channels ai-8 to ai15. Yes, we could arrange a Zoom meeting.

Kind regards

Hasham

[LVNinja]

Check this post 

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA0VU0000004HNF0A2&l=en-CA

By default the BNC are connected considering that the AD is reading channels in differential mode, 

basically the BNC termination AI0,  is connected to both AI 0 and AI8 in differential mode.

You will need to have access to both signals to each BNC connector and treat them as AI, ASSUMING you are configuring your AD as RSE

[Hasham622x]

Hi,

Sorry for the delayed response, and thank you for getting back to me. Regarding BNC connections, to obtain data points from both channels in RSE mode, should I switch to FS or GS?

If you don’t mind, could you please guide me on how to connect 16 AI channels using screw terminals in RSE mode?

Hasha

[D.VA]

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@Hasham622x wrote:

Hi,

Sorry for the delayed response, and thank you for getting back to me. Regarding BNC connections, to obtain data points from both channels in RSE mode, should I switch to FS or GS?

If you don’t mind, could you please guide me on how to connect 16 AI channels using screw terminals in RSE mode?

Hasha

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FS = Floating Source

GS = Ground Referenced Source

If the source you're measuring is floating (ie. a battery) then you use the FS setting.  If the source you're measuring is referenced to ground then use the GS setting.

[Hasham622x]

Hi,

Thanks for your reply. Could you please guide me on how I could connect multiple channels of AI in RSE mode by using Screw terminals? As on Screw terminals, all points are labelled PO. 0..to PO.31 and multiple DGND points and one AIGND point so kindly please guide.

Kind regards

Hasham

[D.VA]

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@Hasham622x wrote:

Hi,

Thanks for your reply. Could you please guide me on how I could connect multiple channels of AI in RSE mode by using Screw terminals? As on Screw terminals, all points are labelled PO. 0..to PO.31 and multiple DGND points and one AIGND point so kindly please guide.

Kind regards

Hasham

Your analog channels are on the left BNC connectors. 

The other side is Digital I/O on the screw terminals. 

[LVNinja · Accepted solution]

The only signal on the screw terminal you will use is the AI GND, each BNC connector you will use to connect both ends to your AI signals, it means that for each BNC, you will wire 2 analog signals one for each wire to the BNC connector, and the AI GND all connected to the AI GND on the Screw terminal (on the RSE Configuration). ALL Channels need to be switched to GS.