User`s guide

Residual Measurement Fundamentals 7
Agilent E5505A User’s Guide 219
optional variable phase shifter or line stretcher. Quadrature is achieved
when the meter on the front panel of the phase noise interface is set to zero.
9 Reset quadrature and measure phase noise data.
Synthesized residual measurement using beatnote cal
10 This calibration option requires two synthesizers of which one must be
tunable such that a beatnote can be acquired. For the system to calibrate,
the beatnote frequency must be within the following ranges shown in
Table 33.
NOTE
For the system to accept the adjustment to quadrature, the meter must be within ±2 mV to
±4 mV.
Figure 154 Calibration source beatnote injection
Power
splitter Phase
detector
Source
RF
calibration
source
E5505a_cali_source_beatnote
27 Feb 04 rev 1
Optional line
stretcher
Signal
input
Ref input
50Ω
load
Table 33 Frequency Ranges
Carrier Frequency Beatnote Frequency Range
<500 kHz 10 Hz to 10 kHz
<5 MHz 10 Hz to 100 kHz
<50 MHz 10 Hz to 1 MHz
<250 MHz 10 Hz to 10 MHz
>250 MHz 10 Hz to 50 MHz
or 1/2 the frequency range of the configured analyzer, or whichever is lower.