Viavi OSA-4100 User Manual page 6

Introduction
SFP Slots
The Nano-OSA offers 1 integrated SFP slot for mounting
one SFP transceiver module or tunable laser (to be
ordered separately). These SFP+ modules can be used
as a DWDM stimulus to check DWDM networks together
with the DWDM analyzer.
An activated transceiver module connected to the SFP+
slot emits optical radiation at the output "TX". The
input "RX" of the transceiver module has no function.
The optical laser radiation is indicated by LEDs assigned
to the SFP slots. The SFP modules are hot pluggable
and can be changed during operation of the Nano-OSA.
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