T7-Analog input Signal Range the relation betwean Gan and vout

2 posts / 0 new

Thu, 04/27/2017 - 05:24

Nora

I am just reading the Appendix A-3-2 Signal range in your website. the Example#2 has just confused me. Comparing to Appendix A-3-1, i expected to have G=10 for the output voltage of 1.0 volt. But in example#2 the gain is equal 1. Is it maybe a type fault or i didn't get the point what is the relation between vout and gain in labjack T7.

Thank you for your reply

Regard

Thu, 04/27/2017 - 09:47

LabJack Support

I think what you are saying

I think what you are saying is that if you were doing a measurement where the max voltage was 1.0 volts, you would use the +/-1V range (Gain=x10) as that would provide the best resolution for that signal. That would generally be correct. The point of Example #2 has nothing to do with resolution, but rather just showing and example that violates a condition discussed in Appendix A-3-2 ... "voltage of any AIN terminal must not exceed +/-11.5V versus GND". I'll change the numbers so Vdiff>1.0V to avoid your point of confusion.

https://labjack.com/support/datasheets/t7/appendix-a-3-2