Demod Audio - Keysight x-series User Reference Manual

Couplings
Readback Text
Backwards Compatibility
Notes
Initial S/W Revision
Backwards Compatibility:
The Screen Video function is intended to be very similar to the 8566 Video Output and the PSA Option 124.
However, unlike the PSA, it is not always on; it must be switched on by the Screen Video key. Also, unlike
the PSA, there are certain dependencies (detailed above) – for example, the Quasi Peak Detector is
unavailable when Screen Video is on.
Furthermore, the PSA Option 124 hardware was unipolar and its large range was padded to be exactly
right for use as a Screen Video output. In the X-Series, the hardware is bipolar and has a wider range to
accommodate the other output choices. Therefore, the outputs won't match up exactly and users may
have to modify their setup when applying the X-Series in a PSA application.

Demod Audio

Selects the analog output to be the demodulation of the video signal.
When Demod Audio is selected, the demodulated audio signal appears at this output whenever the Analog
Demod application is demodulating a signal or when Analog Demod Tune and Listen is operating in the
Swept SA measurement.
When Analog Out is in the Auto state, this output is auto-selected when in the Analog Demod mode or
when Analog Demod Tune and Listen is operating in the Swept SA measurement.
If any other Analog Output is manually selected when in the Analog Demod mode or when Analog Demod
Tune and Listen is operating in the Swept SA measurement, a condition warning message appears.
Key Path
Example
Dependencies
EMI Receiver Mode Reference
• If no new sweep is to follow (as in Single sweep mode), the output remains live, and continues to
show the pre-detector data
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 or YAS licensed in your instrument.
Screen Video output changes while in FFT Sweeps, so for measurements that use exclusively FFT
Sweeps, or if the user manually chooses FFT Sweeps, the Screen Video output will look different than
it does in swept mode.
Screen Video
See "Backwards Compatibility:" on page
A.04.00
Input/Output, Output Config, Analog Out
OUTP:ANAL DAUD
This key only appears if the Analog Demod application (N9063A), the N6141A or W6141A
application, or Option EMC is installed and licensed, otherwise the key will be blanked and the
command will generate an "Option not available" error.
The output holds at its last value during an alignment and during a marker count. It is not held
between sweeps, in order for Tune and Listen to work properly.
When Demod Audio is the selected Analog Output:
• all active traces are forced to use the same detector.
205, below.
4 Input/Output Functions
Input/Output
205