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Re: [Discuss-gnuradio] Offset Parameter ?
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From: |
Josh Blum |
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Subject: |
Re: [Discuss-gnuradio] Offset Parameter ? |
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Date: |
Fri, 07 May 2010 16:24:52 -0700 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9pre) Gecko/20100217 Shredder/3.0.3pre |
On 05/07/2010 06:44 PM, William Pretty Security Inc wrote:
Ok. I've almost got my scanner working, but I have a problem.
What does the "offset" parameter do in the signal source ??
The equation for the output of the signal source is something like this:
output[n] = amplitude*waveform[n] + offset
Look at the output of the waveform with the scope sink, it will be
clear. I think the ramp does not go below zero with an offset of zero.
Does it produce the equivalent of a DC off set?
For example if I want a ramp that goes from 0 to 2 volts, do I need an
offset of 1 (volt) ??
Probably an amplitude of 1 and an offset of 1, check the scope sink.
There is no voltage equivalent here. I call them units.
-Josh