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V1.0
07/01/22
Newark.com/multicomp-pro
Farnell.com/multicomp-pro
sg.element14.com/b/multicomp-pro
5.1.1 [Center Freq]
Sets the center frequency of the sweep. When pressed, the frequency mode is switched to Center Freq and Span in order to
enter the desired parameter data.
Key Points:
•
The start and stop frequencies vary with the center frequency when the span is constant.
• Changing the center frequency horizontally shifts the current sweep channel and the adjustment is limited by the specified
frequency range.
• 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.
5.1.2 [Start Freq]
Sets the start 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:
•
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 order to sweep the adjacent channels manually.
•
You can modify this parameter using the numeric keys, knob, or direction keys.
Frequency step lends itself to detect the harmonic waves and bandwidths that are beyond the current span.
For example, for order of harmonic of a 300 MHz signal, you can use set both the center frequency and frequency step to 300
MHz, and press the up direction key continuously to increase the center frequency to 600MHz, that is secondary harmonic.
Press frequency steps to increase center frequency by 300MHz, which reaches 900MHz. [CF Step Auto Man] shows the auto
or manual mode to setting the steps. When step is under manual mode, press [CF Step Auto Man] to return to auto mode.
