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RMS measurement help.

2015, 2015-P, 2016, 2016-P
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fixindan
Posts: 2
Joined: February 17th, 2011, 9:41 am
Country: United States

RMS measurement help.

Post by fixindan » February 17th, 2011, 10:29 am

Hello,

I'm trying to band limit my signal to 300 Hz to 3 kHz and then measure RMS voltage for 1 second duration. I see that I can band limit in distortion mode and get RMS reading in distortion mode, but how can I make sure that it's over 1 second duration? Also manual specifies that distortion mode RMS reading may be different from AC voltage mode RMS reading. How different is this? Thanks for your help.

Dixin

Dale C
Keithley Applications
Keithley Applications
Posts: 2842
Joined: June 10th, 2010, 6:22 am
Country: United States
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Re: RMS measurement help.

Post by Dale C » February 17th, 2011, 1:00 pm

The design engineer who is more familiar with the 2015-P indicated that it is not possible to control the amount of time over which a measurement is made when measuring distortion. As you are already know, you can set the high and low frequency.

fixindan
Posts: 2
Joined: February 17th, 2011, 9:41 am
Country: United States

Re: RMS measurement help.

Post by fixindan » February 17th, 2011, 1:05 pm

Hi Dale,

Thank you for your response. Is the amount of time during which a set of data is obtained to calculate RMS constant? If so, what is this time interval? Thanks again.

Dixin

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