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waveform analysis "relative accuracy"?

Question asked by lurgyman63 on Nov 27, 2010
Latest reply on Dec 7, 2010 by tabbott
I'm doing work comparing measurements of modulation from a DUT against a reference modulation source.  The same instrument is used to generate the carrier for each.  Both look a lot like square pulses at about 160 kHz around carriers near 900 MHz.  For each modulation source, I'm measuring amplitude between the two states (e.g. (delta I)^2 + (delta Q)^2) with the Basic measurement personality on a PSA at 8 MHz.  I'd like to think that this is nearly as simple as a modulation measurement could get My question is, if we can assume both the DUT and reference modulation are ideal square waves,  does anyone know of a good way to estimate a relative accuracy of the measurement of the amplitude comparing these two signals?  

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