Agilent Technologies PSA Series Manual page 218

Front-Panel Key and SCPI Command Reference
Measurement keys
4.4.5.4.4 Average Mode
Selects the type of termination control used for averaging. This determines the averaging action after the
specified number of frames (average count) is reached.
Exponential - Each successive data acquisition after the average count is reached, is exponentially weighted and
combined with the existing average.
Repeat - After reaching the average count, the averaging is reset and a new average is started.
Mode:
Key Path:
Remote Command:
Preset:
State Saved:
Range:
Example:
4.4.5.4.5 Trig Source
Displays menu keys that enable you to select the trigger mode of a measurement. When in a trigger mode other
than Free Run, the analyzer will begin the measurement only when the proper trigger condition is met. This key
is available only when PSA firmware revision A.11.08 or above, or Option 23A is installed. The following
trigger menu keys are available:
• Free Run (Immediate)
(also called Immediate).
- An internal IF envelope trigger that occurs at the absolute threshold level of the IF signal.
• Video (IF Envlp)
• RF Burst (IF Wideband)
signals. It triggers on a level that is relative to the peak of the signal passed by the RF or absolute level.
- Sets the trigger directly to an exrernal signal connected to the front-panel
• Ext Front
connector. No measurement will be made unless a signal is connected to the
connector on the front panel.
- Sets the trigger directly to an exrernal signal connected to the rear-panel
• Ext Rear
No measurement will be made unless a signal is connected to the
218
MRECEIVE
Meas Setup
[:SENSe]:FMDeviation:AVERage:TYPE REP|EXP
[:SENSe]:FMDeviation:AVERage:TYPE?
REP
Saved in instrument state.
Repeat | Exponential
:FMD:AVER:TYPE EXP
:FMD:AVER:TYPE?
- The next measurement is taken immediately, capturing the signal asynchronously
- An internal wideband RF burst trigger that has an automatic level control for burst
EXT TRIGGER INPUT
EXT TRIGGER INPUT
TRIGGER IN
connector on the rear panel.
TRIGGER IN
connector.
Chapter 4