Rohde & Schwarz SMBV100B - Attenuator Settings

Configuring the RF Signal
R&S
®
SMBV100B
376User Manual 1178.4460.02 ─ 03
The following are examples of test requirements and the corresponding configuration:
●
Automatic configuration
Select standard operation mode ("Auto"), in which the generator adjusts the attenu-
ation of the RF output signal automatically
●
Compensation for cable loss
You can compensate the loss of a cable connection by a higher output power
●
DUT tests under low signal to noise conditions
Low output power is suitable to test the behavior of a DUT under low signal to
noise conditions.
●
Uninterrupted level settings with constant VSWR
A fix attenuation value is required for obtaining uninterrupted level settings with
constant VSWR.
The configuration "RF Off Mode > Unchanged" ensures that constant VSWR is
maintained if you turn the signal off and on again.
●
Noise sensitive applications
The parameter "RF OFF Mode > Full Attenuation" sets maximum attenuation and
thus suppresses noise when you turn off the RF signal.
6.12.1.1 Attenuator Settings
Access:
► Select "RF" > "RF Level" > "Level > Attenuator".
In the "Attenuator" dialog, you can select the operating mode of the electronic
attenuator, the instrument is equipped with.
The remote commands required to define these settings are described in Chap-
ter 12.13, "OUTPut Subsystem", on page 646 and Chapter 12.16.15,
"SOURce:POWer Subsystem", on page 867.
Settings
Mode .......................................................................................................................... 376
Level Range ...............................................................................................................377
RF OFF Mode ............................................................................................................ 377
Mode
Determines the operating mode of the attenuator.
Improving Level Performance