User`s guide

Table Of Contents
218 Agilent E5505A User’s Guide
7
Residual Measurement Fundamentals
Procedure
1
Connect circuit as per Figure 153, and tighten all connections.
2
Measure the power level that will be applied to the Signal Input port of the
test set’s phase detector. Table 32 on page 218 shows the acceptable
amplitude ranges for the test set phase detectors.
3
Measure the output power at the side of the power splitter where the
calibration source will be substituted, then terminate in 50 ohms. See
Figure 154 on page 219.
4
Adjust the calibration source to the same output power as the measured
output power of the power splitter.
5
Adjust the output frequency such that the beatnote frequency is within the
range of the analyzers being used.
6
The system can now measure the calibration constant.
7
Disconnect the calibration source and reconnect the power splitter.
8
Adjust the phase difference at the phase detector to 90 degrees
(quadrature) either by adjusting the test frequency or by adjusting an
Figure 153 Measuring power from splitter
Table 32 Acceptable amplitude ranges for the phase detectors
Phase Detector
50 kHz to 1.6 GHz 1.2 to 26.5 GHz
1
1 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
Power
splitter Phase
detector
Source
E5505a_pwr_phase_det_ref
27 Feb 04 rev 1
Optional line
stretcher
Power meter or
spectrum
analyzer
Signal
input
Ref input