192 8163A/B, 8164A/B, 8166A/B User’s Guide
7 Return Loss Measurement
Tip: You can do this by wrapping the fiber five times around the shaft of a
screwdriver (or some similar object with a diameter of between 5mm and
7mm).
3 Press [Menu] to access the menu.
4Move to <Terminated calibration> and press Enter. The instrument
measures the power reflected by the cable, and sets the [Para] values
used by the Return Loss monitor’s power sensor and monitor diode.
Tip: An alternative steps 3 and 4 is to select the Return Loss module’s
[Details] screen, then press [TermCal].
Calibration using the Keysight 81610CC Reference Cable
Use the Keysight 816100CC Reference Cable to make a Reflectance
Calibration, and the measurement patchcord to make a Termination
Calibration. The 81610CC has an FC/PC connector as reflector, that has
been measured and labeled at the factory. The connector face should be
protected and not be contacted.
To measure insertion loss and the front panel delta of the system (see
Calculating the Front Panel Delta on page 209), you must also measure
the insertion loss of the Reference Cable and measurement patchcord.
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 112 on page -192 if you are using an External Source,
Figure 112 Measuring the Return Loss of the Reference Cable - External Source
or Figure 113 on page -193 if you are using an internal source.
Keysight 81610CC Reference Cable
8161x 8163B Lightwave MultimeterLaser
Source
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