Using Traditional NI-DAQ device and NI-DAQmx device at the same time

[jeongho20000]

Dear all,

I have LavView 2009 and am trying to use both traditional NI-DAQ (to collect data from an accelerometer which is connected to SCXI 1000) and NI-DAQmx (to collect data from a load cell and electrical stimulator which is connected to NI USB-6259 BNC) at the same time. Since the accelerometer which I have needs a power supply, I cannot directly connect it to my USB-6259, but should use SCXI 1000. Any suggestions? If possible, I want to collect all the data only through USB-6259 BNC.

Best,

Jeong  

[DianeS]

If you look at the data sheet for  the SCXI 1000, you will see that it is supported by DAQmx.  There is no need to use traditional DAQ in your program.

[jeongho20000]

Hi, DianeS

Is there any way for me to connect SCXI 1000 to USB-6259 so that I don't need to use a DAQ card?

Thanks,

Jeong

[DianeS]

Not to my knowledge, no.  I might be wrong about that, but the cabling doesn't match up. 

[HeatherBaker]

Hi Jeong,

Only mass termination USB devices can control the SCXI chassis. However below are a couple other suggestions and considerations- hopefully it helps!

The SCXI-1000 is the chassis and does not do any of the acquisition.  I will assume you are using one of the Accelerometer modules for the front end filtering for your acquisition.  This would be preferred versus acquiring your accelerometer data with a USB 6259.  In addition to the excitation supplied to the accelerometer, there is the additional filtering and simultaneous scanning if using more than one accelerometer.  The USB-6259 will multiplex through your channels and does not include the built in filters. 

The actual acquisition is being performed by the device controlling the SCXI chassis.  Are you using a PCI multifunction DAQ device or SCXI-1600 for control?  If you are using a 2 connector DAQ card, for example like the PCI-6254 you can control the SCXI chassis with connector 0 and cable to a breakout board, i.e. SCB-68, from connector 1.