Lambda SR1, Operation Manual, Page: 259 / 317

SR1 Operation 259
© 2014 Stanford Research Systems
2.8.4 Level Panel
The Level quick measurement measures the output level of the EUT either absolutely, or relative to the
reference values computed with the "Reference" measurement. The source can be swept over frequency
and amplitude to yield the frequency response of the EUT for a range of input amplitudes.
Cabling Configuration
The output of SR1's analog or digital generator is connected to the EUT's input. The output of the EUT is
connected to SR1's analog or digital inputs. The number of inputs and outputs and the connectors used
are specified in the
Setup Panel .
Generator Configuration
The output waveform is set to either Sine or Low Distortion Sine as specified in the panel. For free-run
operation the amplitude and frequency of the generator is set to the frequency and level in the "start"
column of the panel. For swept operation the frequency is swept from the start to stop value for each
amplitude value specified.
Analyzer Configuration
One or both analyzers (depending on the number of output channels specified in the Setup Panel ) are
configured as Time Domain Detectors . The upper and lower bandwdith limits are adjustable in the
"Analysis" section of the panel.
Free Run Configuration
A barchart display is created for each output channel showing the instantaneous output level of the EUT.
Sweep Configuration
A graph will be created for each channel showing a graph of output level vs. Freq for the selected number
of amplitude steps. Log spacing can be selected for both the frequency and amplitude sweeps. The
settling parameters of the Level measurement can be adjusted directly from the "Settling" tab of the
panel.