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Operating Concepts
Knowing the Instrument Modes
Harmonic Operation (Option 002 Only)
The analyzer's harmonic menu can be accessed by pressing .
The harmonic measurement mode allows you to measure the second or third harmonic as the analyzer's
source sweeps fundamental frequencies above 16 MHz. The analyzer can make harmonic measurements in
any sweep type.
Typical Test Setup
Figure 7-48 Typical Harmonic Mode Test Setup
Single-Channel Operation
You can view the second or third harmonic alone by using only one of the analyzer's two channels.
Dual-Channel Operation
To make the following types of measurements, uncouple channels 1 and 2, and switch on dual channel.
• The analyzer measures the fundamental on one channel while measuring the second or third harmonic
on the other channel.
• The analyzer measures the second harmonic on one channel while measuring the third harmonic on the
other channel.
•Using the feature, the analyzer measures the fundamental on channel 1
while measuring the second or third harmonic in dBc on channel 2.
•Using the feature, the analyzer couples power between channels 1 and 2.
This is useful when you are using the D2/D1 to D2 feature because you can change fundamental power
and see the resultant change in the harmonic power.
The analyzer shows the fundamental frequency value on the display. However, a marker in the active entry
area shows the harmonic frequency in addition to the fundamental. If you use the harmonic mode, the
annotation H=2 or H=3 appears on the left-hand side of the display. The measured harmonic cannot not
exceed the frequency limitations of the network analyzer's receiver.
Coupling Power Between Channels 1 and 2
is intended to be used with the softkey. You can use
the D2/D1 to D2 function in harmonic measurements, where the analyzer shows the fundamental on
channel 1 and the harmonic on channel 2. D2/D1 to D2 ratios the two, showing the fundamental and the
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