Table of Contents
Advertisement
Measured Beatnote
Document Part No. E5500-90024Ed. 1.0
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.
5
The system software will then calculate the phase detector
constant automatically using the following algorithm:
6
The system software will then prompt you to set the phase noise
software's meter to quadrature.
7
The system will now measure the noise data.
This calibration option requires that one of the input frequency
sources be tunable such that a beatnote can be acquired from the two
sources. For the system to calibrate, the beatnote frequency must be
within the following ranges shown in
Table 8-3
Frequency Ranges
Carrier Frequency
<500 kHz
<5 MHz
<50 MHz
<250 MHz
>250 MHz
or 1/2 the frequency range of the configured analyzer, or whichever is lower.
Advantages:
G
Simple method of calibration.
E5500 Phase Noise Measurement System Version A.02.00
Residual Measurement Fundamentals
Calibration Options
Table
8-3.
Beatnote Frequency Range
10 Hz to 10 kHz
10 Hz to 100 kHz
10 Hz to 1 MHz
10 Hz to 10 MHz
10 Hz to 50 MHz
8
8-15
Advertisement
Table of Contents
