User`s guide

Performance Tests Performance Tests
48 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
Linearity Test
This performance test applies to Agilent 81623B/4B/6B/8B Optical Heads
Figure 9 Measurement Setup for Power Linearity
81628B only:
You have to disconnect the integrating sphere of the 81628B head to verify
the linearity. Use the 81102SC high return loss patchcord to connect the
DUT to the attenuator.
NOTE