200 8163A/B, 8164A/B, 8166A/B User’s Guide
7 Return Loss Measurement
Figure 122 The Calibration Parameters Screens - Return Loss Diode
2 Press [Next]. The Calibration parameters screen for the Monitor Diode
appears, as displayed in Figure 123 on page -201. This screen shows
current value for the following quantities:
• [Para], the parasitic power value measured by the Return Loss
module’s monitor diode in dBm. This value is determined by the
termination calibraion, or you can use the default setting held in the
factory calibration.
• [Ref], the power measured by the Return Loss module’s monitor
diode during the reflectance calibration in dBm
• [Meas], the power currently measured by the Return loss Module’s
internal monitor diode in dBm