How do I physically connect the SCXI 1180 when using a 1520 and 1346 adapter?

[OKors]

Here's my current configuration:

SCXI 1000 chassis

x2 SCXI 1520 Bridge Modules (Slot 1, and Slot 2)

1180 Feedthrough panel.

I recently purchased a 1346 adapter so I can use the feedthrough to access AI channels on the DAQ card.

My question is, how do I physically connect the ribbon cable of the 1180? Does it plug into the BACK of the last module in the chassis (ie. bridge module2 in slot 2) or does it plug into the other 49pin connector on the 1346 adapter?

If you read the installation manual for the 1180 http://www.ni.com/pdf/manuals/371062a.pdf (Page 2-3)

And the installation manual for the 1346 http://www.ni.com/pdf/manuals/320722b.pdf (page 2)

it seems the instruction contradict eachother. The 1180 manual says connect it to the back of the module

the note under Fig.2 on page 2 of the 1346 says you cannot have anything plugged into the module next to the one that has the 1346 plugged into it; in my case that's module 2...

[Broken_Arrow]

The way I see it: The 1520 in the First slot - plug the 1346 into that. Then the cable from the 1346 kind of loops back into the chassis and through the 1180. Make sense? BTW, it must be on the first card when using a 1520. And typically, if using a 1180, the 1180 is in slot 2, so that would confirm that you should not have any module next to the 1346. You may have to move your other 1520 to slot 3.

Slot 1: 1520 with 1346 adapter on it, DAQ connected to this.

Slot 2: 1180 feedthrough

Slot 3: 1520

Message Edited by Broken Arrow on 03-31-2010 12:25 PM

[OKors]

I have the 1346 plugged into the first module in slot 1.

But let me try and clairfy what you're saying...

"Then the cable from the 1346 kind of loops back into the chassis and through the 1180". So this is my answer? But I'm actually taking  the cable from the 1180 and plugging it into the other 49-pin connector on the 1346. Sorry, symantics...

"...it must be on the first card when using a 1520". By "it" are you referring to the 1346 (which is how it's currently configured) or the 1180 cable?

and lastly; why does the 1180 need to go into slot 2? I can currently fill both slots (1&2) with the 1520's and with the 1346 plugged into module1/slot1, I can pass the ribbon cable around back of module2 and into the 1346.

Is there some other reason beside potential space limitations that you'd use the feedthrough in slot2?

Thanks for your info and patience!

Message Edited by OKors on 03-31-2010 12:50 PM

[Broken_Arrow]

The 1346 must be on the First card. If you are using a 1520, it has to be in Slot 1, AND it has to connect to the DAQ. In your case, it connects to the DAQ by way of the 1346.

I just looked at a system which uses a 1520 and a 1349 (not 1346, but similar). There's no way for the 1349 to connect to the 1180's cable unless the 1180 is at slot 2. In your first post, you mentioned that no module should be connected to the slot adjacent to the 1346, so I was assuming this is the reason - the cable only has room to reach the adjacent slot. If you an keep your two 1520's in slot 1 and 2, give it a try.

Message Edited by Broken Arrow on 03-31-2010 01:30 PM

Message Edited by Broken Arrow on 03-31-2010 01:32 PM

[Broken_Arrow]

edited out, sorry.

Message Edited by Broken Arrow on 03-31-2010 01:37 PM