Tektronix RSA6100A Series, Help Manual

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Taking Measurements > Measurements Available Measurements
Measurement Description
Ripple dB The Ripple measurement expressed in dB.
Droop Droop is the power difference between the beginning and the end of the pulse On time. A
straight-line best
fi t is used to represent the top of the pulse. The result is a percentage
referenced to the Average ON Power.
Droop dB The Droop measurement expressed in dB.
Overshoot The amount by which the signal exceeds the 100% level on the pulse rising edge. Units
are %Watts or %Volts.
Overshoot dB The Overshoot measurement expressed in dB.
Pulse-Pulse Phase Difference The phase difference between the selected pulse and the fi rst pulse in the analysis
window. The instantaneous phase is measured at a user-adjustable time following the
rising edge of each pulse.
Pulse-Pulse Freq Difference The difference between the frequency of the current pulse and frequency of the previous
pulse. The instantaneous frequency is measured at a user-adjustable time following the
rising edge of each pulse.
RMS Freq Error The RMS Frequency Error measurement is the RMS average of the Freq Error vs. Time
trace, computed over the Measurement Time.
Max Freq Error The maximum frequency error is the difference between the measured carrier frequency
of the signal and the user-selected center frequency of the analyzer.
RMS Phase Error The RMS Phase Error measurement is the RMS average of the Phase vs Time trace,
computed over the Measurement Time.
Max Phase Error The phase is measured at each point during the pulse’s ON time. The phase error for
each point is the difference between the measured phase value and the calculated ideal
phase value. After the phase error is calculated for all points in the acquisition record,
the largest error in the positive direction and the largest in the negative direction are
determined. Whichever of these two values has the greater absolute value is designated
the Max Phase Error.
Freq Deviation The Frequency Deviation measurement is the difference between the maximum and
minimum measured values of the signal frequency during the Measurement Time.
Phase Deviation The Phase Deviation is the difference between the maximum and minimum Phase values
measured during the ON time of a pulse.
Impulse Response Amplitude The difference in dB between the levels of the main lobe and highest side lobe.
Impulse Response Time The difference in time between the main lobe and highest side lobe.
Time This is the time in seconds relative to the time reference point in the fi rst acquisition
record in the data set.
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RSA6100A Series Real-Time Spectrum Analyzers Help