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Chapter 2
Measurement Concepts
Frequency and Amplitude Accuracy
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Frequency and Amplitude Accuracy
Sweep Speed
The maximum and minimum sweep times available for manual
selection are constrained to allow coordination of the source and the
analyzer.
For stimulus/response measurements, the Q of the DUT can determine
the fastest rate at which the analyzer can be swept. (Q is the quality
factor, which is the center frequency of the DUT divided by the
bandwidth of the DUT.) The Option 215 calculated sweep times are
usually fine. You can verify that it is not sweeping too fast by slowing
the sweep and noting whether there is a frequency or amplitude shift of
the trace. If there is a change, continue to slow the sweep until there is
no longer a frequency or amplitude shift.
Tracking Error
Many built-in tracking generators require tracking adjustment by the
user to account for circuit drifts. The circuits in Option 215 are all fully
frequency synthesized, so no tracking adjustment is required nor is any
available.
Power Leveling
Power leveling is not available on any of the PSG-C, PSG-D, or the
ESG-C signal sources.
Power Slope Correction
With Option 215 there is no functionality for adding a power slope
correction to the source output level, so you may need to find a more
accurate source.