11-18-2009 05:06 AM
dear ni,
I want to know about the PCI card that can be generate analog output in the range of maximum 10mv. i am going to use for caliberation of loadcell, strain gauges devices.
could you tell me on which PCI card will support this type of application.
11-18-2009 07:53 AM - edited 11-18-2009 07:56 AM
Try: http://www.ni.com/dataacquisition/
These have analog output voltages < 10V: http://sine.ni.com/nifn/cds/view/main/p/sn/n12:7604,n3:7853/lang/en/nid/1036/ap/daq
You need something with a high bit count to get good resolution at 10 mV, such as the PCI-6010 which has a 16 bit D/A.
Here are the minimum voltage specs for the 6010:
Minimum Voltage Range | -0.2..0.2 V |
---|---|
Range Accuracy | 283 µV |
Range Sensitivity | 6.4 µV |
11-18-2009 08:03 AM
I would consider using an analog output with a larger voltage range, such as 10 V, and following that with a buffer amplifier configured for a gain of 1/1000. Choose an amplifier with very good offset voltage characteristics. Perhaps a chopper stabilized amplifier.
Lynn
11-18-2009 10:45 PM
hello ,
i need a 125 analog output channels with 4precesion. if i generate 1 mV analog output, the output should be stable with atleast 3 precision.