Range selection with Spectrum View

Forum for discussing PicoScope version 6 (non-automotive version)
Post Reply
Chris Stamford-Burrows
User
User
Posts: 6
Joined: Wed Feb 18, 2009 3:03 pm
Location: Asker, Norway

Range selection with Spectrum View

Post by Chris Stamford-Burrows » Mon Mar 23, 2009 10:52 am

Hi
I am using P6 v6.2.1.12 and 3424.

When using Spectrum View, please can you tell me what, theoretically, is the effect of changing Range while using this view. (I'm using Voltage reference 1mV default, Blackman-Harris average.)

In practice, changing the range appears to have the effect of increasing or decreasing the dB level at a particular frequency.

Thanks

Robin
Advanced User
Advanced User
Posts: 558
Joined: Fri Sep 19, 2008 10:17 am

Post by Robin » Mon Mar 23, 2009 3:06 pm

Hi

Changing the input range should not affect the spectrum as long as the signal is not clipped.

There may be small differences due to the change in quantisation error.

If you put the software in spectrum mode and add a scope view, you can play with the ranges and see the effect of varying the range.

Robin

Post Reply