Specifications

Chapter 2 2-5
Example Measurements
Equipment for Test Set-ups
In the example, a low amplitude, 26 GHz signal is generated with the Agilent 83650B. The
amplitude was further reduced by using an 8490D coaxial attenuator, which produced a
signal that was hidden in the noise floor of the spectrum analyzer in normal operation.
Refer to Figure 2-2, “Analog Input Signal with Preamp OFF.”
Figure 2-2 Analog Input Signal with Preamp OFF
When the internal preamp is turned on, the noise floor of the spectrum analyzer is
reduced, revealing the signal of interest. Refer to Figure 2-3, “Analog Input Signal with
Preamp ON.”
Figure 2-3 Analog Input Signal with Preamp ON
Preamp
Control
"OFF"
Preamp
Control "ON"