User`s guide

8-10 Agilent Technologies E5500 Phase Noise Measurement System
Residual Measurement Fundamentals
The Calibration Options
Procedure
1. Connect circuit as per Figure 8-6, and tighten all connections.
Figure 8-6 Measuring Power at Phase Detector Signal Input Port
2. Measure the power level that will be applied to the signal input of the
Agilent/HP 70420A’s Phase Detector. The following chart shows the
acceptable amplitude ranges for the Agilent/HP 70420A Phase
Detectors.
Table 8-1 Acceptable Amplitude Ranges for the Phase Detectors
3. Locate the power level you measured on the left side of the Phase
Detector Sensitivity Graph (Figure 8-7 on page 8-11). Now move across
the graph at the measured level and find the corresponding Phase
Detector constant along the right edge of the graph. This is the value you
will enter as the Current Detector Constant when you define your
measurement. (Note that the approximate measurement noise floor
provided by the Signal Input port level is shown across the bottom of the
graph.)
Phase Detector
50 kHz to 1.6 GHz 1.2 to 26.5 GHz
1
1. Agilent/HP 70420A Phase Noise Test Set Options 001 and 201
Ref Input (L Port) Signal Input (R
Port)
Ref Input (L Port) Signal Input (R
Port)
+ 15 dBm
to
+ 23 dBm
0dBm
to
+ 23 dBm
+ 7dBm
to
+ 10 dBm
0dBm
to
+ 5dBm