Data Acquisition Idea Exchange

Hello

I don't know if there is already an "idea exchange" about this, it could be usefull that USB devices or adapter support USB 3.0.

A device isn't recognized through an USB 3.0 port.

Thanks !

Vincent O.

Some users have expressed that they would be interested in getting a 4 port version of the USB-8502/2 CAN interface device with a metal housing, instead of plastic. 

I use a PXIe-6363 which a wonderful device.   But it lacks level shifting at the digital I/O.

I would recommend that most DAQ multi-io devices support programmable and externally driven level-shifting for digital IOs.   Range for DAC driven level-shift (0.8 - 3.6, 5V),  and support for external input.   It would also be nice if multiple ports are present that some of them allow independent logic levels.  Default level should be 3.3V.    Port configurable pull-up, pull-down and latch-hold.

I rarely have to set up hardware for a new analog measurement and always have to puzzle over the difference between RSE and NRSE modes. I think of the inverting input as the reference, so "Non-Referenced Single-Ended" doesn't make sense to me. And, if I run the AISense line to my remote sensor, isn't that a Referenced Single-Ended measurement?

Yesterday, I noticed that at least some on-line documentation now refers to GRSE (Ground Referenced Single-Ended); adding that single letter helps a lot. What about adding another single letter and referring to the other mode as RRSE (Remote Referenced Single-Ended)? One letter could save a lot of people a lot of time.

Currently there are only two options available if you want a C-series card that has ±10V analog inputs with internal excitation voltage. Both of the available options have serious limitations which makes them impractical in dynamic testing environments. 

9218: With two input channels, it is impractical for large channel count testing. As an example at our test facility, we may run 60 analog channels which would require 30 of these cards. That would require 4 cRIO chassis' 

9219: With a max sample rate of 100 s/s, it cannot be used in a dynamic environment to accurately record data. 

There are two options that would be very beneficial to dynamic testing:

1) Add more input channels to the 9218 card so that high channel count tests don't need 3+ cRIO's. 

2) Make a new card similar to the 9218 with less capability but more input channels (No bridge, no IEPE, no ±20mA). 

For example:

± 5V, ±10V, ±60V Input Range

± 1V, ± 5V, ± 10V Internal Excitation

Minimum of 4 analog input channels.

Sample Rate 5 Ks/s

Does anyone else have a need for a card like this?

I would like to see a new line of HW on the lines of the lego NXT brick.

basically something between the sbrio and low end usb daq.

this could be a bare bones arm processor, low to mid end daq (8-32 dio (fpga to make them optional ctrs i2c/spi pwm  or timmed io, a few Ai and AO).  this line is for stand alone robotics or data logging.  lower cost and power and expandablilty than the crio but not requiring a PC (except as a client) like the crio.  This would fill in to the labview everywhere model, and programmed just as the crio with labview RT and FPGA.  The cost of the crio makes it not practical and an overkill for some applications and for the hobbiest/education robotics market, maybe something like the NXT brick but higher end would be nice to see.