Ceyear 4041 Series, User Manual

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Chapter VII AM-FM-PM Analyzer Mode (optional)
107
7.3.6 Peak menu
Peak Search
Peak
Next Peak
Next Pk Left
Next Pk Right
Max Search
Min Search
Marker ->
Center
·[Peak Search]: Press
【
Peak
】
→[Peak Search] to set the current active marker to the
maximum peak point of the measurement trace and display the frequency and
amplitude of such marker at the upper middle position of the screen.
·[Next Pk]: Press
【
Peak
】 →[Next Pk] to move the active marker to the next highest
point related to the current marker position on the trace.
·[Next Pk Left]: Press
【
Peak
】 →[Next Pk Left] to find the next peak at the left of the
current marker position.
·[Next Pk Right]: Press
【
Peak
】 →[Next Pk Right] to find the next peak at the right of
the current marker position.
·[Max Search]: Place a marker at the highest point of the trace and display the
frequency and amplitude of this marker at the upper right corner of the screen.
Pressing this key does not change the activated functions.
·[Min Search]: Press
【
Peak
】 →[Min Search] to place a marker at the lowest point of
the trace and display the frequency and amplitude of this marker at the upper right
corner of the screen. Pressing this key does not change the activated functions.
·[Marker→Center]: Press
【
Peak
】
→[Marker→Center] and set the center frequency
equal to the marker frequency; this function can quickly move the signal to the center
position of the screen, and this operation is only valid for the radio frequency
spectrum.
·[Special Attention]: Each peak and maximum and minimum values are searched
on the selected trace. See the [Select Trace] menu for details.
7.3.7 RF spectrum menu
OBW
Off On
RF Spectrum
Method
% dBc
%
99.00%
dBc
-3.00dB
·[Special Attention]: The occupied bandwidth measurement in the radio frequency
spectrum is similar to that in the Spectrum Analyzer mode, but it only applies to
the radio frequency spectrum in the AM/FM/PM analyzer measurement mode.
·[OBW Off On]: Press
【
RF Spectrum
】 →[OBW Off On] to turn the occupied
bandwidth measurement on or off.
·[Method % dBc]: Press
【
RF Spectrum
】 →[Method % dBc] to select different
measuring methods, including percentage or dBc down method. The percent method is
used to obtain the occupied bandwidth of the signal by calculating the bandwidth of the
portion of the frequency that contains a certain percentage of the power of the entire
transmission signal. The percent of the power may be set by the user. The dBc down
method defines the occupied bandwidth as the distance between the two frequency
points when the signal power drops dBc at both sides of the frequency point where the
peak power of the signal exists. The dBc of the signal power drop is set by the user.
·[%]: Press
【
RF Spectrum
】 →[%] to set the percent value.
·[dBc]: Press
【
RF Spectrum
】
→[dBc] to set the dBc value.