Newport MPSN Series, Руководство пользователя, Страница: 9 / 23

Section 1 - Introduction 1- 3
Directivity The ratio of the power returned
to any other input port to the
launched power, expressed in
dB.
Excess Loss The ratio of the total power at
all output ports to the launched
power, expressed in dB.
Isolation The ratio of the power at an
output port in the transmitted
wavelength band to that in the
extinguished wavelength band.
Non-Latching These style of switches require
no power to maintain one
position and a co5 VDC
drive current to maintain the
other position.
Polarization-Dependent
Loss (PDL)
The maximum (peak to peak)
variation in insertion loss as the
input polarization varies,
expressed in dB.
Port Configuration Number of input ports x number
of output ports (e.g., 2x2).
Return Loss The ratio of the power returned
to the input port to the launched
power expressed in dB.
Uniformity The difference between
maximum and minimum
insertion losses.