PXI Analog Input Cards

Was briefly looking at these amazing 32-input fully differential input cards from General Standards, until the moment that it dawned on me that I don't need all 32 channels.

Here are is the 32-channel 16-bit ADC family from General Standards. I was surprised that their input noise is unexpectedly high considering that the similar analog output cards have low noise options. http://www.generalstandards.com/view-products2.php?BD_family=16ai32ssc

This shows that the input noise is 0.5 mVRMS; typical, all ranges; 0.01-50kHz. http://www.generalstandards.com/specs/66_16ai32ssc_spec_110614.pdf

Here's all of General Standards' analog input boards, a pretty amazing selection: http://www.generalstandards.com/analogio5.php

Basic google searches led straight back to National Instruments analog input cards

Here are the basic analog input modules, with the simplest being the 8-input PXI-4300: http://www.ni.com/en-us/shop/select/pxi-analog-input-module

The datasheet for this card doesn't just come out and tell you the input noise, there's a whole set of formulas which add up gain error, offset error, and noise based on input range, resulting in essentially a set of noise curves although they don't present it as such. The 6221 has the following expected noise and accuracy: 1V scale: 38 uVrms noise, 323 uV accuracy, 10V scale 171 uVrms noise, 2495 uV accuracy. http://www.ni.com/pdf/manuals/375476c.pdf

The NI "M Series" seems to be higher accuracy (lower noise) http://sine.ni.com/nips/cds/view/p/lang/en/nid/201759

This datasheet for the M series 6280 follows the same procedure for adding gain error, offset error, and noise together to show much better accuracy readings. In summary, this card has the following expected noise and accuracy: 1V scale: 7 uVrms noise, 70 uV accuracy, 10V scale 60 uVrms noise, 980 uV accuracy. http://www.ni.com/pdf/manuals/375217c.pdf

Here is a PXI-6221 National Instruments 16-bit 250Ksamples/sec Analog IO card that seems to be from their "Legacy" series: http://sine.ni.com/nips/cds/view/p/lang/en/nid/14133

PXI octal analog out

Trying to find a solution for needing 20 low-current power lines to a device that will fit in my National Instruments PXIe chassis and work with Labview.

Trying the PXIe-4322 octal analog output card. It's a beautiful design, with all outputs fully isolated from chassis ground and each other, nice voltage ranges, not a lot of current sourcing capability but I don't need that. However, the card does not include the capability to monitor the output voltages and currents, I guess that's too much to ask for a 1U PXI card that already has 8 outputs!

The support page for the PXIe-4322. Disappointed by the lack of Labview example code listed. http://sine.ni.com/psp/app/doc/p/id/psp-1224/lang/en

The PXIe-4322 top-level page: http://www.ni.com/en-us/support/model.pxie-4322.html

The user manual: http://www.ni.com/pdf/manuals/373754a.pdf

Marvin Test Solutions has an awesome power supply card with 8 outputs. It's actually just 3 separate power rails, and it's not clear what the isolation between them is, although it is interesting that each power rail can be externally supplied. But, again, no output power monitoring. That's what I get for trying to get a cheap multi-output power supply by cheating.

MTS's catalog page for the GX1838 card: https://www.marvintest.com/Product.aspx?model=GX1838+Series

Pickering has a bunch of kick-ass power supplies and battery simulators. Given that these haven't been fully investigated yet, here are some links for me to check later to figure out what kind of output isoloation and monitoring they might have:

Power Supplies: http://www.pickeringtest.com/en-us/products/pxi/chassis-instrumentation/power-supply-battery-simulation/power-supplies

Battery Simulators, including their popular 6 battery simulator: http://www.pickeringtest.com/en-us/products/pxi/chassis-instrumentation/power-supply-battery-simulation/battery-simulators