Agilent Technologies FieldFox N9912A User Manual page 60

NOTE Although the start frequency can be set as low as -100 MHz, amplitude accuracy
is specified above 2 MHz. Below 2 MHz, frequency accuracy is maintained, but
amplitude accuracy is degraded.
The frequency range of the measurement can be changed using the following
methods:
 Set Center and Span frequencies
 Set Start and Stop frequencies
 Toggle between Zero and Last selected span
 Set Full Span of the FieldFox
 Using Channel selection. Learn how on page 62.
 Using Marker -> Center (frequency). Learn how on page 125.
How to set Frequency Range
 Press Freq/Dist .
 Then choose from the following:
 Follow each of these by entering a value using the numeric keypad, the ▲|▼
 When using the ▲|▼ arrows, press Enter . The increment setting of the arrows
 After using the keypad, select a multiplier key. Learn about multiplier
Two more ways to change the frequency range
 Press Freq/Dist .
 Then choose from the following:
60
and
Center Freq Span
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entering frequency range. Enter the frequency of interest. The Center
frequency is at the exact center of the X-axis. The Frequency Span places
half of the frequency range on either side of center. When the Center and
Frequency Span values are entered, then the X-axis annotation on the screen
shows the Center and Span frequencies.
and frequencies. Start is the beginning of the X-axis and Stop is
Start Stop
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the end of the X-axis. When the Start and Stop frequencies are entered, then
the X-axis annotation on the screen shows the Start and Stop frequencies.
arrows, or the rotary knob.
is based on the current span. This can be changed in SA Mode. See How to
change frequency step size below.
abbreviations on page 18.
Each key press toggles the frequency span between 0 Hz
Zero/Last Span
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and the last specified frequency span.
More
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Then Full Span Selects the entire frequency span of the FieldFox. The
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Center frequency is set automatically.
frequencies. This is the most common method of
N9912A FieldFox User's Guide