Specifications

When the Connect Diagram appears, the Calibr Process softkey will
provide access to the the Determination of Phase Detector Constant
display (Calibr Process) where the calibration spur values can be entered.
When the system measures the calibration spur, the analyzer does a
peak search over a frequency span of two times the entered spur offset
frequency. Once the spur has been located, the level of the spur is
measured and used to compute the Phase Detector Constant. This method
compensates for both the non-linearity and harmonics of the phase
detector.
Considerations for the Derive From Double Sided
Spur Method
Requires an RF Spectrum Analyzer capable of measuring the carrier
frequency and the modulation side bands or a modulation analyzer with
phase demodulation capabilities.
Requires a Phase Modulator capable of generating the calibration spurs at
the desired carrier frequency.
Evaluation of the modulated spurs are necessary to insure good accuracy.
Uneven sidebands denote amplitude modulation.
At least 20 dB of isolation is required through the power splitter between
the R port and the L port of the phase detector to prevent the calibration
spurs from being correlated out.
2-70 Calibr Process: $N w/o PLL