5
.Menu Interpretation
35
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], [dB
μ
W], [dBpW], [dBmV],
[dB
μ
V], [W] or [V].
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
]
Choose decibel equals to 1μW as amplitude unit
.
6) [
W
]
Choose Watts as amplitude unit.
7) [
V
]
Choose Voltage as amplitude unit.
5.3.7 [Preamplifier On Off]
Sets the status of preamplifier located at the front of the RF
signal path. Turning on the preamplifier reduces the displayed
average noise level in order to distinguish small signals from the
noise when working with small signals.