Rohde & Schwarz ESW Series - Page 121

Measurements and Result Displays
R&S
®
ESW
121User Manual 1177.6298.02 ─ 08
The auto ranging feature in the receiver remains active even if you change the attenua-
tion and preamplifier properties in other measurement channels and then return to the
receiver application.
Notice: For more information, see Chapter 10.7.1, "Increasing Measurement Sensitiv-
ity (or Avoiding an Input Mixer Overload)", on page 169.
Remote command:
General: INPut<ip>:ATTenuation:AUTO on page 508
Scan range: [SENSe:]SCAN<sr>:INPut:ATTenuation:AUTO on page 457
Auto range mode: INPut<ip>:ATTenuation:AMODe on page 507
Attenuation ← Configuring scan ranges
Defines the attenuation of the signal.
You can attenuate the signal in 1 dB steps. The range is specified in the datasheet.
Attenuation of less than 10 dB is only possible if you turn off 10 dB Minimum Attenua-
tion.
If you are using the preamplifier in frequency ranges above 8 GHz, the available
attenuation can be reduced. For more information, see Chapter 10.7.1.2, "Using the
Preamplifier", on page 171.
Notice: For more information, see Chapter 10.7.1, "Increasing Measurement Sensitiv-
ity (or Avoiding an Input Mixer Overload)", on page 169.
The auto ranging feature in the receiver remains active even if you change the attenua-
tion and preamplifier properties in other measurement channels and then return to the
receiver application.
The R&S ESW also allows you to determine the best attenuation automatically.
●
In the receiver application, turn on the "Auto Ranging" feature.
●
In the other applications, select attenuation "Mode" ➙ "Auto"
Remote command:
Global: INPut<ip>:ATTenuation[:VALue] on page 507
Scan range: [SENSe:]SCAN<sr>:INPut:ATTenuation[:VALue] on page 457
Attenuation mode: INPut<ip>:ATTenuation:AUTO on page 508
Preamplifier ← Configuring scan ranges
Configures the preamplifier.
In addition to the standard preamplifier, a low noise amplifier is available as an optional
hardware component.
You can configure the preamplifier manually (➙ "Value" menu) or, if you are using the
Auto Range functionality, let the R&S ESW pick the ideal configuration (➙ "Auto"
menu).
●
"Auto Off"
Allows you to turn the preamplifier on and off manually as required. If you have the
optional low noise preamplifier, you can select the preamplifier you would like to
apply from the "Value" menu ("LN Amplifier" or "Preamp)", or turn it off completely.
●
"Auto LN Amplifier"
Test Automation