PXIe 1073 Input Grounding

Hello,
I was wondering how the grounds from the hybrid slots of a PXIe 1073 chassis are connected within the chassis. I'm using 3 PXI 6255 cards, though I don't believe that makes a difference. What I'm looking for is whether they are tied together or not, or similar information. Thank you.
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BVeezy wrote:
UPDATE: I was incorrect. Please refer to the following KB:
http://digital.ni.com/public.nsf/allkb/02A451C0A88A3EAE8625702F0059C98E
Regards,
Brandon V.
Applications Engineer
National Instruments
Yeah, I discovered that not long ago. Every ground on DAQ cards are tied to the chassis ground. It is just that each type of ground (DGND, AGND) have their own planes on the card itself. And chassis ground will be going to Earth Ground, in case that matters to you.
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Can i use PXIe-1073 with an embedded PXIe controller PXIe-8108

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Hello kanad,
The PXIe-1073 is a MXI-integrate chassis. This means that the MXI card that would normally go into the controller slot (slot 1) is built into the chassis. The PCIe-8361 or Expresscard8360 are placed into the desktop or laptop, respectively, and connect to the chassis. The cards in the PXIe-1073 then appear as if they are part of the desktop of laptop.
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NI PXIe-1073 User Manual and Specifications
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How to determine what card is in what slot of a PXIe-1073 unit programmable

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Hi Matt
Sorry for delay in replying.
After a lot of uninstallation/installation/repair of different driver versions, i have currently got the following software (see attached pic): NI-DAQmx 9.5.5, Ni PXI platform services 3.2.1.
In the picture, you can see that all my cards are detected in NI-DAQmx devices as Dev1, Dev2 etc.
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The attached pic shows NI-MAX and device manager snap shot.
Please advise.
Thanks
Jeet
Attachments:
nimax dev man.jpg ‏316 KB

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Eduardo,
I again apologize for the extremely long delay. Our R&D department has completed your request, and it can be found online, here: http://digital.ni.com/hardref.nsf/websearch/99B2D43123FBABE1862578B60077848F?OpenDocument&node=20053...
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Hi,
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Hi Janaf
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Input Overvoltage Protection
Differential configuration ............... ±42.4 Vpk
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NISW

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Hello.,
I have a PXIe 1073 system
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Thanks

I believe the information in this link would be helpful: Pseudodifferential versus Differential Input Configurations

How to set a I/O channel in NI PXIe-6556 to ground when in PMU mode

Is there a way or API call in LabVIEW to set any one of the channels to ground within the PXIe-6556 when in PMU mode?
Solved!
Go to Solution.

If you disconnect the PMU, you will have the option to go to tristate or your previous digital state, but not ground. Forcing 0V is probably the closest you can get to a GND like behavior. The default line state is tristate for this device, which will leave the line floating if there is no active driver.
Kyle A.
National Instruments
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SIngle reference for PXI 6509 Input and Output

Hi ,
I am using 96 channel PXI 6509 as a DIO, In this 96 channels i need to assign 1st port for input, 2nd port for output and 4th and 5th for input so on. its is not a big deal using labview but labview creates seperate reference( Task in) for input and ouput.
I need to have a single reference for both input and output ( like we have in NI DCpower for SMU)
Can any one suggest me how i can achive this?
Thanks and best regards,

I would accomplish this with an Action Engine that handles all of your tasks. Alternatively, make a class that handles all of the tasks.
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Pxi 4070 input impedance

I am trying to modify the input impedance of the pxi 4070 dmm with the NI DMM property node. When I set the input impedance to greater than 10 giga ohms, I am getting an error outputted after running niDMM Configure Measurements Digits.vi. The signal that I am measuring is 5V, so I should be able to use the 10 giga ohm input impedance. I set the niDMM Configure Measurements Digits to autoscale. Could this be an issue that the pxi-4070 is not allowed to have its input impedance changed when the dmm is set to autoscale?

You are correct. When the range is selected, the API automatically selects the input impedence. If you need to do this programmatically based on the measurement, then you could use a case structure that checks the range being used and then sets the input impedence based on this. Do you know if the value you are trying to read at the time would set the range to a value that is compatible with the input impedence?
Thanks,
Sean Newton
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NI 6509 PXI TTL Input Impdeance

I have a requirement to measure a TTL logic signal with a 5.1K ohm load. The specification for a PXI version of the board has high input impedance as a default condition. What is the actual impedance and can I just put a 5.1K ohm resistor across the inputs? Are there pull up/down resistors like the PCIe version? Can the default be changed?
John Anderson

I am not expert for this board. But the manual states that the inputs are in high impedance state after reset only (as far as the "non-e" version is concerned). This means that the input does not present a load to a signal line. In this state, however, you cannot receive any input signals.
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However, all this relates to a pure transfer of the state of the signal source (high or low), and the resistor values are specified as "typical" on purpose, there is no tolerance field indicated. If you have to make a measurement where the impedance of the signal line plays an important role, you should use some analog high-input circuitry and add a resistor of the required value between the signal line and GND.
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PXIe 1073 Input Grounding

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