Forum for discussing PicoScope version 6 (non-automotive version)
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jane
- Newbie
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- Joined: Sat Mar 03, 2012 12:20 pm
- Location: Norway
Post
by jane » Tue Mar 27, 2012 6:43 pm
When I apply 142mV (100mV rms) from the internal signal generator to Ch A I do measure:
Amplitude at peak: -20.69 dBV
Average amplitude at peak: 74.2mV
Why do I read 74.2mV and not 92.4mV that is equal to -20.69 dBV?
And why not 100mV or 142mV (peak value)?
According to the Picoscope 6 users guide (Spectrum measurements):
Amplitude at peak.
The amplitude of the peak signal value.
Average amplitude at peak.
The amplitude of the peak signal value averaged over a number of captures.
In other words: "Average amplitude at peak" should be equal to "Amplitude at peak" when the stddev is close to zero..
PicoScope® 6 - PC Oscilloscope software version: 6.6.23.2
Copyright © 1995-2012, Pico Technology Ltd
Model: PicoScope 4262
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Martyn
- Site Admin
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- Joined: Fri Jun 10, 2011 8:15 am
- Location: St. Neots
Post
by Martyn » Wed Mar 28, 2012 9:12 am
We are currently looking at the Picoscope 6 measurements for the 4262 as there may be a few inaccuracies with these.
Martyn
Technical Support Manager
