RIGOL DSA875 User Manual
Page 30
RIGOL
3-2
User’s Guide for EMI Test System
Tip:
Here, the default scan range refers to the frequency axis range (the actual
value depends on the model of the spectrum analyzer) of the spectrum window
after the software is correctly connected to the spectrum analyzer or the
frequency axis range (the actual value depends on the pre-scan range set by
users) of the spectrum window after the software performs pre-scan.
3. Y-axis unit
Click the dropdown arrow in this box and select dBm, dBmV or dBuV in the
dropdown list to set the Y-axis unit in the waveform display area.
4. X-axis scale type
Click the dropdown arrow in this box and select Linear or Log in the
dropdown list to set the current waveform display mode.
5. Turn on/off the marker setting area
Click and select OFF/ON under Marker to turn on the Marker Setting
Area at the lower-right corner of the interface; click OFF/ON again to close
the Marker Setting Area.
6. Turn on/off the spectrum window operation keys
Click and select OFF/ON under Zoom to turn on the spectrum window
operation keys. You can move the marker (
), zoom in/out the spectrum
(
) and change the display range of the spectrum window by clicking and
dragging the mouse (
). You can turn off the spectrum window operation
keys by clicking OFF/ON again.
Besides, you can click
to select different zoom in/out types.
: select the spectrum within the desired region by clicking and
dragging the mouse. After that, only the spectrum within the region
selected is displayed in the spectrum window. In this mode, the signal
details are amplified for easier observation and research.