Keysight Technologies FieldFox A Series, Руководство пользователя

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Keysight N9927-90001 User’s Guide 149
SA (Spectrum Analyzer) Mode
SA Mode Settings
— Center and Freq Span frequencies. This is the most common method
of 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.
— Start and Stop frequencies. Start is the beginning of the X-axis and
Stop is 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.
— Follow each of these by entering a value using the numeric keypad, the
arrows, or the rotary knob.
— When using the arrows, press Enter . The increment setting of the
arrows is based on the current span. This can be changed in SA Mode. See
How to change frequency step size below.
— After using the keypad, select a multiplier key. Learn more in “Multiplier
Abbreviations” on page 43 .
Two more ways to change the frequency range
— Press Freq/Dist
— Then choose from the following:
— Zero/Last Span Each key press toggles the frequency span between 0
Hz and the last specified frequency span. Learn more about Zero
Span in “Zero Span Measurements” on page 170 .
— More
— Then Full Span Selects the entire frequency span of the FieldFox. The
Center frequency is set automatically.
How to change frequency step size
When using the arrows to change any of the frequency settings, the size
of the frequency step can be changed.
— Press Freq/Dist
— Then More
— Then CF Step Auto Manual
— Auto Each press of the arrows increments or decrements the
value by 1/10th (one division) of the current frequency span. Note : To
change this setting from Manual to Auto , press CF Step twice.