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User entry of phase detector constant
This calibration option requires that you know the phase detector constant for
the specific measurement to be made. The phase detector constant can be
estimated from the source power levels (or a monitor oscilloscope) or it can be
determined using one of the other calibration methods.
Once determined, the phase detector constant can be entered directly into the
system software without going through a calibration sequence. Remember,
however, that the phase detector constant is unique to a particular set of
sources, the RF level into the phase detector and the test configuration.
Advantages
• Easy method for calibrating the measurement system.
• Requires little additional equipment: only an RF power meter to manually
• Fastest method of calibration. If the same power levels are always at the
• Only one RF source is required.
• Super-quick method of estimating the phase detector constant and noise
Disadvantages
• The user entry of the phase detector constant is the least accurate of all the
• It does not take into account the amount of power at harmonics of the
Agilent E5505A User's Guide
measure the drive levels into the phase detector or monitor oscilloscope.
phase detector, (as in the case of leveled outputs), the phase detector
sensitivity will always be essentially the same (within a dB or two). If this
accuracy is adequate, it is not necessary to recalibrate.
floor to verify other calibration methods and check available dynamic
range.
calibration methods.
signal.
Residual Measurement Fundamentals
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