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144 Chapter 5
Analog Measurements - Screens and Control Fields
Port/Sweep Port/Sweep
Port/Sweep
This control performs two functions:
• The upper field specifies the output port of the tracking generator.
• The lower field specifies whether the tracking generator sweeps from
low-to-high frequencies (Norm), or from high-to-low frequencies
(Invert
). (The spectrum analyzer always sweeps from low to high
frequencies.) The swept frequency range is determined by the Span
setting in the spectrum analyzer’s main controls menu.
This field is displayed only when Track
is selected in the Track/Fixed
field on the spectrum analyzer’s RF Gen controls menu.
Operating Considerations
When using the tracking generator, if the output port is set to RF Out,
or the main menu Input Port is set to RF In, internal instrument
coupling can occur. For the best isolation between the tracking
generator and the spectrum analyzer, use Dupl for the output, and Ant
for the input.
For measurements on high-power devices, such as amplifiers, use the
RF IN/OUT port for the input.
Screens on which this field is displayed
SPEC ANL: RF generator controls menu
Main Menu