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26
User Manual
3.4 Amplitude
Set the amplitude parameters of the analyzer. Through modifying these parameters, signals under
measurement can be displayed in a proper mode for easier observation and minimum error. Any
change of Ref Level, Attenuator Value, Preamp mode and Ref Offset will restart sweep.
3.4.1 Ref Level
Set the maximum power or voltage that can be currently displayed in the trace window. The value
is displayed at the upper left corner of the screen grid.
The maximum reference (Ref) level available is affected by the maximum mixing level; input
attenuation is adjusted under a constant maximum mixing level in order to fulfill the following
condition:
Note: the maximum reference level of different machine models may be different, please refer to
the data manual specifically.
Command Format :DISPlay:WINDow:TRACe:Y[:SCALe]:RLEVel
:DISPlay:WINDow:TRACe:Y[:SCALe]:RLEVel?
Instruction This command sets the reference level for the Y-axis.
Gets reference level.
Parameter Type Float, unit: dBm, dBmV, dBuV, dBuA, V, W
Parameter Range
Unit is dBm
：
-
170 dBm ~ 23 dBm
Unit is dBmV
：
-
123.01 dBmV ~ 69.99 dBmV
、
Unit is dBuV
：
-
63.01 dBuV ~ 129.99 dBuV
、
Unit is dBuA
：
-
96.99 dBuA ~ 96.01 dBuA
、
Unit is Volts
：
707.11pV ~ 3.16 V
Unit is Watts
：
0W ~ 199.53m W
Return Float, unit: dBm
Example :DISPlay:WINDow:TRACe:Y:RLEVel 20 DBM
3.4.2 Attenuator
Set the value for the internal attenuator of the RF input. So that the large signal can be low
distortion and the small signal can pass through the mixer with low noise.