Key points:
⚫ In Log scale type: the Y-axis denotes the logarithmic coordinates,
the value shown at top of the grid is the reference level and the
grid size is equal to the scale value. The unit of Y-axis will be
automatically switched into the default "dBm" when the scale
type is changed from Lin to Log.
⚫ In Lin scale type: the Y-axis denotes the linear coordinates, the
value shown at the top of the grid is the reference level and the
bottom of the grid shows 0 V. The grid size is 10% of the
Reference level and the Scale/Div is invalid. The unit of Y-axis
will be automatically switched into the default "mV" when the
scale type is changed from Log to Lin.
⚫ Other than as mentioned above, the unit of Y-axis is
independent of the Scale Type.
5.3.5 [Ref Offset]
Assigns an offset to the reference level to attempt to compensate
for gains or losses generated between the device under
measurement and the analyzer.
Key points:
⚫ The changing of this value changes both the readout of the
reference level and the amplitude readout of the marker, but will
not impact the position of the curve on the screen.
⚫ You can modify this parameter using the numeric keys.
⚫ This offset use dB as absolute unit, will not change with selected
scale and unit.
5.3.6 [Ref Unit►]
Sets the unit of the Y-axis to[dBm], [dBmV], [dBuV], [V] or [W]
Key points:
1) [dBm]
Choose decibel equals to 1mW as amplitude unit.
2) [dBμW]
Choose decibel equals to 1μW as amplitude unit.
3) [dBpW]
Choose decibel equals to 1pW as amplitude unit.
4) [dBmV]
Choose decibel equals to 1mV as amplitude unit.
5) [dBμV]
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