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5.Menu Interpretation
30
⚫ The span and center frequency are changed automatically
according to the start frequency. The change of the span would
have influence on other system parameters. For more details,
please refer to "Span".
⚫
In Zero Span mode, the start frequency, stop frequency and
center frequency are always equal. If one is changed the others
are updated to match.
⚫ You can modify this parameter using the numeric keys, knob, or
direction keys.
⚫ If start freq is larger than stop freq when setting, then stop freq
will increase automatically to the same value of start freq.
5.1.3 [Stop Freq]
Sets the stop frequency of the sweep. When pressed, the
frequency mode is switched to Start Freq and Stop Freq in order to
enter the desired parameter data.
Key Points:
⚫ Modifying the stop frequency changes the span and center
frequency, and the change of span influences other system
parameters, see "Span".
⚫ You can modify this parameter using the numeric keys, knob, or
direction keys.
⚫ If stop freq is larger than start freq when setting, then start freq
will decrease automatically to the same value of stop freq.
5.1.4 [CF Step Auto Man]
Sets the step of center frequency. Changing the center
frequency in a fixed step continuously switches the channel to be
measured.
Key Points:
⚫ The frequency step type could be "Manual" or "Auto". In Auto
mode, the CF step is 1/10 of span if it is in Non-zero span mode
or equals 25% of RBW while in Zero span mode; in Manual
mode, you can set the step using the numeric, step keys or knob.
Then activate 【Center Frequency】, press step, center
frequency will change as setting step.
⚫ After you set an appropriate frequency step and select center
frequency, you can use using up and down direction keys to
switch between measurement channels in a specified step in
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