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Optical Time-Domain Reflectometer
The Tektronix TFP2A
FiberMaster Optical Time-Domain
Reflectometer (OTDR) is
an optical-fiber test instrument capable of measuring loss
displaying faults, splices, and other fiber events in
singlemode and multimode optical
FiberMaster applies pulses of light to the fiber under test
via the optical output
connector. As the pulses travel through the fiber, some
light is reflected back to the
instrument. These reflections are processed to display a
visual representation of the
fiber on FiberMaster’s cathode ray tube (CRT), where you can
make distance and
loss measurements on the fiber under test.
The CRT display is a time plot, read from left to right. The
trace starts with the
outgoing pulse, and the time difference is converted to
distance in the measurement
process. When you view a typical fiber display, events that
are further down the fiber
appear to the right (later in time). Loss is measured on the
CRT’s vertical scale.
The FiberMaster OTDR was designed using a modular approach
that allows you
to choose options that answer your specific test and
You can upgrade your instrument configuration as your system
change. FiberMaster can accommodate 850-nanometer (nm)
nm multimode, 1310-nm singlemode, and 1550-nm singlemode
laser sources in
one or two Plug-In
modules. The modules can contain either
two singlemode or
two multimode lasers, or any single laser, allowing the
instrument to be
configured with one to all four wavelengths.
Temperature-controlled laser light sources ensure stable
wavelength and optical
output for highly accurate measurements.
Data Acquisition and Measurement
The internal 32-bit microprocessor performs up to 16
averages per acquisition, maximizing the signal-to-noise
ratio, giving a clear
display of fiber events.
FiberMaster measures a specific fiber feature, with
convenience. In addition, manual adjustments provide
extended flexibility in
interpreting the fiber data.
An expand function allows you to magnify any portion or
feature on the displayed
FiberMaster’s high-density acquisition capability offers
capacity and highly accurate measurements.
A masking function can be performed automatically, or you
can set manual
masks to reduce dead zones caused by large Fresnel
Automatic and Manual Event Marking
The instrument’s event-marking function automatically
locates and measures
events on the fiber under test that have splice losses above
threshold, or you can also mark events manually.
An event table is compiled displaying the measurements for
each marked event.
You can edit and print out this table, plus enter notes and
about each event.
Extended Memory and
FiberMaster offers both a current memory, containing the
acquisition, and a reference memory, for previously acquired
data. A dual-trace mode makes it possible to display the
contents of both current
and reference memory simultaneously, allowing you to compare
optical-fiber acquisition to historical data.
Mass-storage devices (the standard floppy-disk drive and
optional internal RAM)
permit unlimited storage of waveform and settings data on
both removable and
You can choose the optional high-speed internal thermal
printer, or use
FiberMaster with either an IEEE 488 general-purpose
external plotter or printer, or an RS232 external plotter or
printer. One press of a
button on the instrument’s front panel provides a 15-second
hard copy of the
displayed waveform and instrument settings on the internal
Remote Control Capability
The FiberMaster OTDR can be operated under the remote
control of an
instrument controller or a computer with a GPIB Interface
using an IEEE 488
bus, or via the RS-232 serial
An easy-to-use menu system simplifies setting instrument
You can upload and download waveform and settings data
using the RS232
and XModem protocol.
The 7-inch diagonal, high-resolution color or monochrome
CRT provides a
comprehensive on-screen readout of waveform and measurement
Online help displays context-sensitive operator assistance
at the press of a
Rugged, portable construction is also lightweight—under 35
manuel de réparation
2.29 Mbytes (2400695 Bytes)
01 avril 1997
Électronique de documents, numérisation sans, bien lisible.
Date de transfert:
25 décembre 2017
The FiberMaster Module-Level Service Manual consists of six
chapters and two
appendices, containing the following information:
Chapter 1, Introduction, provides a description of the
unpacking and repacking instructions, and instrument
Chapter 2, General Operating Instructions, describes the
functions of each of the
front- and rear-panel controls and connectors, at a level
appropriate for servicing
the instrument. (For complete operating instructions, refer
to the FiberMaster
Chapter 3, Theory of Operation, contains a block-level
description of the
instrument’s operation, as well as a block-level diagram.
Chapter 4, Maintenance, contains the information needed to
do periodic and
corrective maintenance on the FiberMaster, including
inspection and cleaning,
performance verification and adjustment, troubleshooting,
and module removal
and replacement procedures.
Chapter 5, Replaceable Parts, includes a list of
module-level replaceable parts
and exploded-view drawings of their locations in the instrument.
Chapter 6, Diagrams, contains module-level block diagrams.
Appendices include data sheets for recording instrument
information, GPIB and RS232 connection tables, instructions
firmware, and a listing of error codes.