12 – General Information and Specifications
unit. This version of the receiver uses the parallel port interface for communication with the
computer.
The system has a distributed architecture; that is, a transmitter with a single tunable laser
source can be connected to multiple independent receivers, saving considerable test
instrumentation costs. Optical fiber is used to connect each receiver station to the transmitter.
Data Acquisition Board
The optional data acquisition board is a parallel interface through which the computer
communicates with, and controls, the receiver. It is installed in a user-supplied computer.
Software
The software performs several functions, including controlling the testing process, retrieving
data, analyzing and summarizing data, plotting results, and storing raw data or processed
results.
It displays measurement results versus wavelength or frequency. A zoom feature provides the
capability to expand the display in both wavelength and amplitude. Retrieval of a plot for
superimposition on an existing plot is possible. The software has a graphical user interface (GUI)
that enables the selection of various data processing options, analysis functions, and display and
storage options.
User-Supplied Computer
A computer is used to run the software, control the testing process, and use and store the
results.
Key Features
•
Ability to test simultaneously multiple outputs from a device
•
Reduction in total test time as the number of outputs increases
•
Distributed architecture—the laser source can be connected to multiple independent
receivers
•
Reduction in test instrumentation costs
•
Absolute wavelength accuracy (±0.003 nm)
•
Fast measurement (six seconds plus one and one half seconds for each channel for C-band
or eight seconds plus three seconds for each channel for L-band, with the parallel port
interface)
•
Ability to expand wavelength range by combining outputs from two transmitters
•
User-friendly software
Applications
•
Characterization of high density demultiplexers
•
Spectral response measurement of optical network components
•
Research and development
•
Manufacturing
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