Agilent Technologies E5500A User Manual page 254

Table 8-2
Figure 8-9
NOTE
Residual Measurement Fundamentals
The Calibration Options
Acceptable Amplitude Ranges for the Phase Detectors
50 kHz to 1.6 GHz
Ref Input (L Port)
+
15 dBm
to
+
23 dBm
1. Agilent/HP 70420A Phase Noise Test Set Options 001 and 201
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.
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.
8-14 Agilent Technologies E5500 Phase Noise Measurement System
Phase Detector
Signal Input (R Ref Input (L Port)
Port)
0 dBm
to
+
23 dBm
1
1.2 to 26.5 GHz
Signal Input (R
Port)
+
7 dBm 0 dBm
to
+ +
10 dBm
to
5 dBm