2-3
Operation
Agilent83491 /2/3A Modules—At a Glance
WARNING Light energy can radiate from the front pane l OUTPUT connectors on
Agilent 83492A and 83493A modules. The light emitted from these
connectors is the slightly attenuated light that is i nput to the front-
panel INPUT connector.
Use with Agilent 71603B or 71612B Error Performance Analyzers
The front-panel Data and Clock outputs provide electrical recovered clock and
regenerated data signals for simultaneous testing w ith other instruments,
such as the Agilent 71603B or 71612B error performance analyzers.
Multimode module and single-mode reference receivers
Agilent Technologies does not recommend using the Agilent83492A multi-
mode module with single-mode reference receivers such as the
Agilent 83481A, 83482A, or 83485A,B modules. Connecting multimode to sin-
gle-mode fibers causes large reflections and insertion loss because of the
reduction of the optical fiber’s core from 62.5 µm to 9 µm.
Single-mode module and multimode reference receivers
It is acceptable to use an Agilent 83493A single-mode module with a multi-
mode reference receiver such as the Agilent 83486A module . This is true pro-
vided that single-mode fiber is connected to the Agilent 83493A module’s
front-panel INPUT connector.
What you won’t find on these modules....
Unlike other modules designed to be used with the Agilent83480A digital communica-
tions analyzer, the Agilent83491/2/3A modules do not include Channel keys or menus.
Also, there are no GPIB programming commands for these modules.