Keysight Technologies 8163A User Manual page 183

7 Return Loss Measurement
182
81613A Return Loss modules
81613A Return Loss modules include a power sensor, monitor diode, three
couplers, and two internal laser source in one module. They are for use in
the 8163B Lightwave Multimeter, the 8164A/B Lightwave Measurement
System, and the 8166A/B Lightwave Multichannel System for making
return loss measurements.
physical contact
External Laser
Source
Internal Laser
Sources
Figure 101
All 8161x series Return Loss modules include an input for an external laser
source.
P
dut
The Contents of the 81613A Return Loss modules
M
dut
Output 9/125 mm
8163A/B, 8164A/B, 8166A/B User's Guide