194 8163A/B, 8164A/B, 8166A/B User’s Guide
7 Return Loss Measurement
Measuring the Power Transmitted Through the Reference Cable
First, measure the power transmitted through the reference cable.
Making sure all the connectors are clean, set up the instrument as shown
in Figure 114 on page -194 if you are using an External Source. The
reference connector can be attached to a power meter because this is a
non-contact connection.
Figure 114 Power Transmitted through the Reference Cable - External Source
or Figure 115 on page -194 if you are using an internal source.
Figure 115 Power Transmitted through the Reference Cable - Internal Source
6 Move to the Power Sensor channel:
• Press [Menu].
• Move to <Pwr unit>, move to <dB> and press Enter.
• Move to <Display to Reference> and press Enter. This sets the power
transmitted through the reference cable, E
Meas
, as the reference
value <Ref>.
Keysight 81610CC Reference Cable
Power
Sensor
8163B Lightwave Multimeter
8161x 8163B Lightwave MultimeterLaser
Source
Sensor
8161x
Power
8163B Lightwave Multimeter
Keysight 81610CC
Reference Cable
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