Ceyear 4041 Series, User Manual

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Chapter IV Spectrum Analyzer Mode
63
4.3.5 Bandwidth menu
Res BW
Auto Man
BW
Video BW
Auto Man
Average
Off On
SPAN/RBW
100
RBW/VBW
1
Detector
Auto
>
>
Video Type
Lin Log
·[Res BW Auto Man] : Press
【
BW
】
→[Res BW Auto Man] to adjust the resolution
bandwidth, which is within 1 Hz - 10 MHz. The numeric keys, step key or knob can be
used to change the resolution bandwidth by 1, 3 and 10 steps in the manual mode. The
resolution bandwidth varies with the span as per SPAN/RBW ratio in the automatic
mode.
·[Video BW Auto Man] : Press
【
BW
】 →[Video BW Auto Man] to adjust and display
the video bandwidth in the active function area. The video bandwidth is within 1 Hz -
10 MHz. The numeric keys, step key or knob can be used to change the video
bandwidth in the manual mode; in this case, the step key and knob are operated
according to 1, 3 and 10 steps. The video bandwidth varies with the resolution
bandwidth as per RBW/VBW ratio in the automatic mode.
·[Average Off On] : Press
【
BW
】 →[Average Off On] to select the average function.
This function sets the detector as sampling mode and continuously average the traces
simultaneously, thus reaching the effect of smooth trace.
·[SPAN/RBW] : Press
【
BW
】 →[SPAN/RBW] to set the ratio of current span to
resolution bandwidth and display the ratio in the input area. The default value is 100.
This ratio is used in the associated mode of resolution bandwidth.
·[RBW/VBW] : Press
【
BW
】 →[RBW/VBW] to set the ratio of current video
bandwidth to resolution bandwidth. The default value is 1. When the resolution
bandwidth is changed, the video bandwidth in the automatic mode will be
automatically changed to satisfy this ratio. The ratio will be displayed in the input area
and used in the associated mode of these two bandwidths. When a new ratio is selected,
the video bandwidth will be changed to satisfy the new ratio while the resolution
bandwidth keeps unchanged.
·[Detector] : Press
【
BW
】→
[Detector] to pop up the soft menu of setting the detection
mode. For details, see the instructions of [Detector] menu.