Lambda SR1, Operation Manual, Page: 269 / 317

SR1 Operation 269
© 2014 Stanford Research Systems
2.8.9 Crosstalk Panel
The Crosstalk Quick Measurment panel uses the Time Domain Detector (TDD) to measure the
crosstalk from one input channel to the other output channel of the EUT. A signal is applied to one input
channel of the EUT and the TDD with a bandpass filter is used to measure the output signal from the
other channel to get the crosstalk amplitude. The final crosstalk measurement is the dB ratio of this
amplitude to the output level on the channel to which the input is applied.
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. Even though both analyzers are configured, only one channel of
crosstalk can be measured at a time.
Free Run Configuration
A barchart display is created for each output channel showing the instantaneous Crosstalk ratio.
Sweep Configuration
A graph will be created for each channel showing a graph of Crosstalk vs. Freq for the selected range of
amplitudes. Log spacing can be selected for both the frequency and amplitude sweeps. The settling
parameter of the THD+N measurement can be adjusted directly from the "Settling" tab of the panel.