Boonton 4540 Peak Power Meter User Manual - Manual (Page 71)

Boonton 4540 Series RF Power Meter
Operation 4-23
4.5.13 Channel > Extensions Pg 1 Menu (Pulse Mode)
The extensions menu provides access to more advanced channel options such as trace averaging and channel units.
Additionally access to the corrections, define pulse, and extensions menu page two are provided. This menu is for Peak
Power Sensors in Pulse Mode.
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Units
Description: Set the channel units. For power sensors, voltage is
calculated with reference to the sensor input impedance.
Note that for ratiometric results, logarithmic units will
always return dBr (dB relative) while linear units return
percent.
Menu Type: Pop-up Selection.
Choices: dBm, Watts, Volts, dBV, dBmV, dBµV
SCPI Command: CALCulate[1|2]:UNIT <character data>
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Corrections
Description: Selects the channel corrections menu.
Menu Type: Menu Select.
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Averaging
Description: Set the number of traces averaged together to form the
measurement result on the selected channel. Averaging
can be used to reduce display noise on both the visible
trace,
and on marker and automatic pulse
measurements. Trace averaging is a continuous process
in which the measurement points from each sweep are
weighted (multiplied) by a appropriate factor, and
averaged into the existing trace data points. In this
way, the most recent data will always have the greatest effect on the trace shape, and
older measurements will be decayed at a rate determined by the averaging setting and
trigger rate. Note that for timebase settings of 500 ns/div and faster, the 4540 acquires
samples using a technique called equivalent time or interleaved sampling. In this mode,
not every pixel on the trace gets updated on each sweep, and the total number of sweeps
needed to satisfy the AVERage setting will be increased by the sample interleave ratio of
that particular timebase. Note: The default increment is by sequential powers of two.
Menu Type: Numeric value.
Range: 1 to 16,384 (1 = no trace averaging)
SCPI Command: SENSe[1|2]:AVERage <numeric_value>
Fig. 4-17 Extensions Pg1
Menu (Pulse Mode)