Boonton 4530 Peak Power Meter User Manual - Manual (Page 47)

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Boonton Electronics Chapter 3
4530 Series RF Power Meter Operation
Main Menu > Channel 1 | 2 > Params > DutyCycle
Sets the duty-cycle in percent for calculated CW pulse power measurements. Valid only for thermal sensors
and CW sensors in the square-law region and subject to the accuracy of the duty-cycle value. Setting the
duty-cycle to 100% is equivalent to a CW measurement. Note that this method of measuring pulse power
should be used only if a peak power measurement cannot be used.
Range: 0.01 to 100.00 %
Default: 100.00 %
Remote Command: CALCulate:DCYC <n>
Main Menu > Channel 1 | 2 > Params > Def Pulse >
This submenu is used to sets the define pulse reference levels and times which are used to calculate all
readings that are referenced to pulse parameters. The distal, mesial and proximal parameters are related to
pulse geometry in accordance with IEEE definitions. Time gating is used to define the “useful portion” of a
pulse or burst - the interval over which power should be averaged, and represents a percentage
Main Menu > Channel 1 | 2 > Params > Def Pulse > [ Distal, Mesial, Proximal ]
The mesial level defines the “midpoint” of the pulse transition, and is used for pulse width and power
measurements. The proximal and distal levels are the lower and upper thresholds used for edge transition time
measurements. These power levels are entered as a percentage, and the actual power levels are calculated by
multiplying this percentage by the pulse’s current top power.
Range: 0 to 100%
Default: Proximal: 10%, Mesial: 50%, Distal: 90%
Remote Command: SENSe:PULSe:{DISTal | PROXimal | MESIal} <n>
Main Menu > Channel 1 | 2 > Params > Def Pulse > Units
Set the units to which the pulse parameters apply. Note that 90% voltage level corresponds to 81% power
level; 50% voltage to 25% power; and 10% voltage to 1% power. This relationship must be preserved in order
to relate risetime and bandwidth in the voltage and power domains.
Volts Choosing this setting and the default distal and proximal levels above will pre-
serve the conventional assumption that risetime equals 0.35/BANDWIDTH. (De-
fault)
Watts Choosing this setting and 81% and 1% distal and proximal levels, respectively, will
preserve the bandwidth assumption above.
Remote Command: SENSe:PULSe:UNITs VOLTS