8163A/B, 8164A/B, 8166A/B User’s Guide 189
Return Loss Measurement 7
Calibration using the Keysight 81000BR Reference Reflector
You can use the Keysight 81000BR Reference Reflector to make a
Reflectance Calibration, and a Termination Calibration.
Reflectance Calibration
Use this procedure to calibrate the Return Loss module against a
component of known return loss.
1 Making sure all the connectors are clean, set up the instrument as
shown in Figure 107 on page -189 if you are using an External Source.
Figure 107 Reflectance Calibration - External Source
or Figure 108 on page -189 if you are using an internal source.
Figure 108 Reflection Calibration - Internal Source
Tip: For best results and higher repeatability, fix the cable.
2 Attach a component with a known return loss to the end of the
patchcord.
Laser
Keysight 81000BR Keysight 81000FI
81000UM
8161x 8163B Lightwave MultimeterLaser
Source
81113PC
patchcord with FC/PC
output connector
8161x
8163B Lightwave Multimeter
Keysight 81000BR Keysight 81000FI
81000UM
8161x
8163B Lightwave Multimeter
patchcord with FC/PC
output connector