Boonton 4541, Instruction Manual

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Boonton 4540 Series RF Power Meter
Operation
4-17
4.5.10 Channel > Extensions Pg 1 > Corrections Menu (Modulated Mode)
The corrections menu contains items for adjusting correction factors for sensors. This menu consists of an offset adjustment,
and a frequency cal factor control.
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Corrections > dB Offset
Description: Set a measurement offset in dB for the selected sensor.
This is used to compensate for external couplers,
attenuators or amplifiers in the RF signal path ahead of
the power sensor.
Menu Type: Numeric value.
Range: –300 to 300 dB
SCPI Command: SENSe[1|2]:CORRection:OFFSet
<numeric_value>
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Corrections > Freq CF
Description: Set the frequency calfactor currently in use on the
selected channel. Note setting a calfactor with this
command will override the ―autom
atic‖
frequency
calfactor that was calculated and applied when the
operating frequency was set, and setting the operating
frequency will override this calfactor setting.
Menu Type: Numeric value.
Range: –3.00 to 3.00 dB
SCPI Command: SENSe[1|2]:CORRection:CALFactor
<numeric_value>
Main > Channel > Channel 1 | 2 > Extensions Pg 1 > Corrections > Duty Cycle
Description: 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. This item is not pictured above—it only appears in Modulated mode. The Duty Cycle
Menu item is disabled for Peak Power Sensors.
Menu Type: Numeric Value
Range: 0.01% to 100.00%
SCPI Command: None
Fig. 4-10 Corrections
Menu (Modulated)