8-14
Agilent Technologies E5500 Phase Noise Measurement System
Residual Measurement Fundamentals
The Calibration Options
Table 8-2
Acceptable Amplitude Ranges for the Phase Detectors
Figure 8-9
Connection to Optional Oscilloscope for Determining Voltage Peaks
3. Adjust the phase difference at the phase detector as prompted by the
phase noise software.
4. The system will measure the positive and negative peak voltage of the
phase detector using an internal voltmeter. The quadrature meter digital
display can be used to find the peak. The phase may be adjusted either
by varying the frequency of the source or by adjusting a variable phase
shifter or line stretcher.
NOTE
Connecting an oscilloscope to the MONITOR port is recommended because
the signal can then be viewed to give visual confidence in the signal being
measured. As an example, noise could affect a voltmeter reading, whereas,
on the oscilloscope any noise can be viewed and the signal corrected to
minimize the noise before making the reading.
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
0 dBm
to
+
23 dBm
+
7 dBm
to
+
10 dBm
0 dBm
to
+
5 dBm
