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7
Residual Measurement Fundamentals
Procedure
1
Source
E5505a_pwr_phase_det_ref
27 Feb 04 rev 1
Figure 154 Measuring power from splitter
2
Table 32 Acceptable amplitude ranges for the phase detectors
Phase Detector
50 kHz to 1.6 GHz
Ref Input (L Port)
+
15 dBm
to
+
23 dBm
1 Phase noise test set options 001 and 201
3
4
5
6
7
8
216
Connect circuit as per
Optional line
Power
splitter
Measure the power level that will be applied to the Signal Input port of the
test set's phase detector.
amplitude ranges for the test set phase detectors.
Signal Input (R Port)
0 dBm
to
+
23 dBm
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 155
on page 217.
Adjust the calibration source to the same output power as the measured
output power of the power splitter.
Adjust the output frequency such that the beatnote frequency is within the
range of the analyzers being used.
The system can now measure the calibration constant.
Disconnect the calibration source and reconnect the power splitter.
Adjust the phase difference at the phase detector to 90 degrees
(quadrature) either by adjusting the test frequency or by adjusting an
Figure
154, and tighten all connections.
stretcher
Power meter or
spectrum
analyzer
Table 32
on page 216 shows the acceptable
1.2 to 26.5 GHz
Ref Input (L Port)
+
7 dBm
to
+
10 dBm
Signal
input
Phase
detector
Ref input
1
Signal Input (R Port)
0 dBm
to
+
5 dBm
Agilent E5505A User's Guide
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