Chapter 4
Source Key and Programming Commands
Amplitude
52
Source Key and Programming
Commands
Dependencies and
Couplings:
Parameter is disabled if active mode is not Spectrum Analyzer or a
connection has not been established at the specified IP address.
Setting state to ON initializes the external source based on the
current settings of the spectrum analyzer. The external source
display will be turned OFF and the following external source
parameters will be initialized:
• Start/Stop Frequency
• Start/Stop Amplitude
•Number of Points
• Dwell Time
• Sweep type set to stepped
In addition setting the external source control state to ON also sets
the following on the PSA:
• Video Bandwidth = 50 MHz, the PSA video bandwidth is fixed
at 50MHz while external source control state is set to ON.
• Detector Type to Sample
• Trigger Polarity
• Trigger Source to External Front
• Gate Polarity to Positive
• Gate Trigger to External Rear
• Gate Delay
•Gate Length
•Sweep Time
• Resolution Bandwidth
• Gate State to ON
If the calculated external source start or stop frequency exceeds the
frequency range of the external source the sweep is stopped until
you adjust either analyzer start or stop frequency, the frequency
offset (if ON) or harmonic (if ON) such that the frequency range
can be swept by the signal source and PSA simultaneously. Once
the frequency range of the external source is valid, the sweep
resumes.
Example: SOUR:EXT:POW
−22 dBm
SOUR:EXT:POW ON
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