Return Loss Measurement Viewing the Calibration Values
144 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement 
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
– <Meas>, the power currently measured by the Return loss Module’s internal 
power sensor in dB relative to 1 µW, and
– <AvgTime>, the averaging time.
NOTE We recommend that you choose an averaging time of 1 second or longer.
Figure 99 The Calibration Parameters Screen