User`s guide

Table Of Contents
302 Agilent E5505A User’s Guide
11
AM Noise Measurement Fundamentals
page 302. The spur should be adjusted such that it is between –30 and –60
dBc, with a carrier offset of 10 Hz to 20 MHz.
4
Reconnect the AM detector and measure the detector sensitivity. See
Figure 236.
5
Turn off the spur source output.
6
Measure noise data and interpret the results.
Figure 235 Measuring relative spur level
Figure 236 Measuring detector sensitivity
NOTE
The quadrature meter should be at zero volts due to the blocking capacitor at the AM
detector’s output.