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8163A/B, 8164A/B, 8166A/B User's Guide
Keysight 81610CC Reference Cable
Figure 113
Measuring the Return Loss of the Reference Cable - Internal Source
Attach the angled connector of the Reference cable to the front panel. The
81610CC Cable needs an 81000SI connector interface at this port.
Tip: For best results and improved repeatability, fix the cable.
2
Move to [FPDelta], press [Edit], set the value to 0.000, then press [OK].
3
Move to [RLref], press [Edit]. Make sure that the displayed value of
[RLref] is correct. If it is not, move to [RLref], press [Edit], set the value
the return loss value of the reference cable you are using, then press
[OK].
4
Switch on the Laser.
5
Press [Menu]. Move to <Reflectance calibration> and press Enter. The
instrument measures the power reflected by the reference cable. The
[RL] value changes to the same value as entered for [RLref].
Front Panel Delta Calibration
For higher accuracy we recommend that you also calibrate for Front Panel
Delta. This is the difference between the insertion loss of the reference
cable, and the insertion loss of the patchcord used for return loss
measurement. The difference is normally the difference in the front panel
connection, which can change with each reconnection.
Return Loss Measurement
8163B Lightwave Multimeter
8161x
7
193
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