Reduce sample size Signal Express

[Randy36]

I need to reduce the sample size from 3 thermistors over a period of about 1 hour.

I'm reading the voltage differential from 3 analoge inputs with a USB-6343 multifunctional DAQ.

I've tried to reduce the sample rate but this gave me an error, so I went back to the default settings of 1kHz for sampling rate.

Is there a way I can reduce the sample size from withing Signal Express (demo version)? I need to be able to output to excel so that I can share results.

[DFGray]

The Subset and Resample step may work for you.

[Randy36]

Thank you for your response DFGray....I used some type of step (called something along the lines of scale/calibrate?) that was able to reduce the sample size significantly. I figured out the bigger problem was that I was on the demo version which doesn't allow you to add any steps to analyze the data.

[WCGSI2012]

Hi RANDY36,

DId you find a solution on how to get your sampling rate down using the Limited Edition of SignalExpress? 

I'm dealing with a similar issue (NI USB 6210 w/ Signal Express 2012) with trying to measure voltage on 16 channels once every half hour.  It limits the rate to ~once/3.6 minutes.

[REDS]

Hello WCGSI2012,

Does DFGray's "Subset and Resample" step work for you? I think that is a good way to go.

[WCGSI2012]

Hello REDS, Thanks for the response. Been out for a couple of days. I'll take a look again Monday. I'm limited to the LE version of Signal Express 2012, so I believe the "Processing" steps will end up being disabled after the eval period, so I'll be stuck after that. I was looking for a quick off-the-shelf solution when I spent all my money on the DAQ and was hoping that the LE version would have been sufficient to perform simple acquisition and logging functions with the DAQ. Chicken and Egg: couldn't eval SW w/o the HW. I know some DAQs are limited due to the A/D HW, but the datasheet for the 6210 doesn't specify a minimum sample rate. Would you know of other tricks with the LE version of Signal Express 2012? Thanks again!