Agilent Technologies Signal Analyzer N9030a - Manual (Page 659)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Input/Output
Dependencies Because the Log Video output uses one of the two IF processing channels, only one detector is
available while Screen Video is selected. All active traces will change to use the same detector
as the selected trace when Log Video is activated.
Log Video output is not available while any EMI Detector is selected (Quasi Peak, RMS Average
or EMI Average), because these detectors use both IF processing channels. Consequently, if the
user chooses an EMI Detector, there will be no Log Video output.
The output holds at its last value during an alignment, during a marker count, and during retrace
(after a sweep and before the next sweep starts).
This function depends on optional capability. The key will be blanked and the command will
generate an “Option not available” error unless you have Option YAV licensed in your
instrument.
Couplings Log Video output changes while in FFT Sweeps, so for measurements that use exclusively FFT
Sweeps, or if the user manually chooses FFT Sweeps, the Log Video output will look different
than it does in swept mode.
Readback Text Log Video
Initial S/W Revision A.04.00
Linear Video (RF Envelope, Ref=Ref Level)
Selects the analog output to be the envelope signal on a linear (voltage) scale. In this mode, the
pre-detector data is output to the Analog Out connector with a Linear scaling. The output is
based on the current Reference Level, and is not influenced by the selected detector or any digital
flatness corrections or trace post-processing (like Trace Averaging).
The scaling is set so that 1 V output occurs with an instantaneous video level equal to the
reference level, and 0 V occurs at the bottom of the graticule. This scaling gives you the ability to
control the gain without having another setup control for the key. But it requires you to control
the look of the display (the reference level) in order to control the analog output.
This mode is ideal for looking at Amplitude Modulated signals, as the linear envelope effectively
demodulates the signal.
Key Path Input/Output, Output Config, Analog Out
Example OUTP:ANAL LINV
Dependencies Because the Linear Video output uses one of the two IF processing channels, only one detector
is available while Linear Video is selected. All active traces will change to use the same detector
as the selected trace when Log Video is activated.
Linear Video output is not available while any EMI Detector is selected (Quasi Peak, RMS
Average or EMI Average), because these detectors use both IF processing channels.
Consequently, if the user chooses an EMI Detector, there will be no Linear Video output.
The output holds at its last value during an alignment and during a marker count and during
Remote Language Compatibility Measurement Application Reference 659