Power Meter Operation
Making Ratio Measurements
2-54 Agilent E4419B User’s Guide
Making Ratio Measurements
Dual channel ratio measurements can be made on the currently selected 
window by pressing  ,   and selecting   or  . 
The power meter always carries out “Maths” calculations in Watts. The 
power meter displays the ratio of the channels power values in either dB 
or %. When the measurement result is displayed in % a prefix multiplier 
may be shown. The power value of each channel includes offsets, 
calibration factors and duty cycle in addition to measured power. The 
filter, range, offset and calibration factor are set individually for each 
channel.
Ratio measurements can be displayed relative to a stored reference. In 
relative mode readings are displayed in either dB or %. Refer to “Making 
Relative Measurements”, on page 2-37 for further information.
Input Select A/B B/A
HP4402.book  Page 54  Thursday, November 30, 2000  1:39 PM