SIGLENT SSA5083A, User Manual, Page: 142 / 260

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User Manual
limit of the current dynamic range of the spectrum analyzer. When the energy of the signal to be
measured exceeds the reference level, it may produce nonlinear distortion or even overload
alarm.
It is necessary to know the nature of the signal to be measured and carefully select the reference
level to obtain the best measurement effect and protect the spectrometer.
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
4.4.2 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.
Input attenuation can be set up to auto or manual mode.
⚫ Auto mode: the attenuation value is automatically adjusted according to the state of
preamplifier and the current reference level.
⚫ The maximum input attenuation can be set to 31 dB. When the set parameters do not meet
the above formula, you can adjust the reference level by yourselve.
Command format [:SENSe]:POWer[:RF]:ATTenuation
[:SENSe]:POWer[:RF]:ATTenuation?
[:SENSe]:POWer[:RF]:ATTenuation:AUTO OFF|ON|0|1
[:SENSe]:POWer[:RF]:ATTenuation:AUTO?