Anyone who's spent some time using soft pulses on an AMX
spectrometer (without linear amps) will know that some considerable time is
spent in calibrating the soft pulses in terms of strength and, more
annoyingly, w.r.t. PHASE. As you know, as you cross certain attenuation
thresholds the frequency path changes, and the phase "error" changes.
One very nice feature of soft pulses (tp07 menu in eda) is the
ability to apply an offset, and have the soft pulse applied at a position
away from the carrier. This is nice, but it, too, introduces an additional
frequency-
dependent phase error for any given power level. So, my question at last!
Does anyone know of a method of calculating the phase error induced by the
"offset freq." component to a soft pulse?
Thanks,
Mike
++++++++++++++++++++++++++
Michael A. Bernstein
Merck Frosst Canada, Inc.
P. O. Box 1005
Pointe Claire-Dorval, Que.
CANADA H9R 4P8
(514)428-3931 (voice)
(514)428-8615 (fax)