Outside plant technicianshave to
perform a number of tasks: install
apparatus cases and splice cables;
locate and repair span faults such as
bridged taps, load coils, shorts, opens;
and verify that cable meets carrier
requirements prior to Central Office
or Customer Premise equipment
installations. With this multitude of
tasks, outside plant technicians need a
solution that enables them to perform
extensive physical layer testing in an
all inclusive, easy-to-use test set.
The Acterna T-BERD Outside Plant
Tester (209OSP) is a complete tool
that meets the exclusive testing
requirements of the outside plant
technicians. It combines copper
prequalification features (TDR and DC
measurements) with service turn-up
and troubleshooting features for
T1/FT1/HDSL/ISDN /DDStechnologies. The combination of copper
analyzer and digital loop tester
features makes the T-BERD Outside
Plant Tester the most flexible, all-inone solution for outside plant testing.
Highlights
– Copper analysis with DC measure-
ments and graphical TDR
– Combined testing of digital
services and circuits – T1, HDSL,
DDS and ISDN
– Field-upgradeable software allows
for building a custom test set
– Rugged NEMA 4X compliant
design endures the harsh
weather conditions
– Battery-powered operation allows
for field-portable testing
– Reliable testing and proven
performance
Simplifying test procedures with one complete solution
Acterna T-BERD Outside Plant Tester (209OSP)
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Applications
The T-BERD Outside PlantTester can
verify physical layer functionality by
performing standard BER testing.
In addition, it performs DC measurements to accurately identify copper
faults. The TDR’s graphical display
allows the technician to view the
respective faults and confirm the
location, as well asthe type of fault.
Along with BER testing, the T-BERD
Outside Plant Tester can use intelligent
repeater technology to sectionalize
span problems, while the preprogrammed loop codes enable the user
to loopback variousequipment on
the span. When equipped with the
HDSL/ISDN/DDS Measurement
Option, the T-BERD Outside Plant
Tester is able to perform loss measurements at various frequencies to assure
proper signal level on the span for
HDSL, ISDN, BRI, and DDS circuits.
Test copper loops
In order to verify that the copper loop is
able to support digital service such as a
T1, the copper facility hasto be tested.
To effectively test the loop, technicians
need a digital volt ohmmeter (DVOM)
and TDR to determine the physical
impairments and measure the distance
to the fault. The T-BERD Outside Plant
Tester’s DCMeasurement Option,
along with the TDR Option, allow the
technician to effectively prequalify the
copper loop.
DCMeasurement Option
This option enables the T-BERD
Outside Plant Tester to perform ohm,
amp, and, voltage measurements:
– ‘Ohm measurements’ allow the
technician to quickly identify physical
impairments, such as opens, shorts,
grounds, and one-side faults with
automated resistance measurements
between tip, ring, and ground
– ‘Amp measurements’ immediately
detect one-side faults, such asopens
and grounds, with an automated
current measurement between tip
and ring; Automated voltage measurements help isolate bad repeaters and
span-powering problems
A complete solution, the T-BERD
Outside Plant Tester provides:
– One tool, multiple tasks
Cost savings through consolidation
of multiple test capabilities and
features (copper analysis, FT1/T1,
HDSL, DDS, ISDN, span sectionalization) into a single test set
– Investmentprotection
Customers can build a custom test
set for their testing needs with an
option of field-upgrading their unit
later with additional features at a
fraction of the cost of buying a
new test set
– Fastimplementation
A variety of accessories and features
with a common menu interface
reduces training time for technicians
and leads to quicker turn-ups and
closures of trouble tickets
– Reliability
T-BERD’s long-running reputation
for designing reliable test equipment
means customers can be assured
that their test set will notincur
unnecessary repair costs
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TDR Measurement Option
This option locates copper faults. The
T-BERD Outside PlantTester can be easily
configured for TDR measurement by
selecting the cable type and approximate cable length being used. By
completing these simple steps, the
cumbersome process of determining
complex constants such as pulse width
and pulse height is avoided. Once the
TDR is set up, the graphical display
on the mainframe front panel allows the
user to immediately view the TDR traces.
A built-in zoom feature facilitates fault
identification by focusing on copper
faults such as bridged taps, splits, load
coils, high-resistance opens, and bad
splices.Faultidentification isperformed
at the push of a button, with the distance
to the fault displayed in feet.
Turn Up and Troubleshoot
FT1/T1 Circuits
The T-BERD Outside PlantTester
mainframe features a full-span T1
transmitter and receiver used to
identify marginal troubles with all
standard T1 stress patterns at various
output levels. Automatic configuration
and results with summary functions
immediately identify the presence of
T1 pulses, pattern, framing, and error
status. Additionally, the mainframe
can qualify T1 spans with automated
MULTIPAT
™
and BRIDGTAP™stress
patterns. To stress the entire T1 span
and verify the error tolerance of
network equipment, the T-BERD
Outside Plant Tester can insert bit
errors and BPVs.
Fractional T1 (FT1) Option
This option enables the T-BERD
Outside Plant Tester to per form BER tests
on selected channels in order to verify
transmission on contiguousand noncontiguous FT1 bandwidth. It also
allows the technician to verify VF
circuit performance with 404, 1004,
2804, and 2713 Hz tones at various
output levels.
Standard T1/FT1 BER testing provides
the most accurate measure of pointto-point transmission performance
by stress-testing the circuits to
ensure proper circuit configuration.
The advanced software options that
complement T1/FT1 BER testing
include: Advanced Stress Patterns
Option, Channel Monitor Option,
Enhanced ESF Option and Smart
Loopback/Command Codes Option.
Advanced Stress Patterns Option
This option enables the technician to
stress repeatered T1/FT1 circuits with
a variety of stress patterns such as
55 octet, T1-DALY, and other long user
patterns as recommended bythe
ANSI T1.403 standard.
Channel Monitor Option
With this option, the T-BERD Outside
Plant Tester is able to simultaneously
monitor ABCD bits of all 24 timeslots,
listen to voice quality, and view the
data bits of individual DS0 channels.
Enhanced ESF Option
This option adds testing flexibility
to the T-BERD Outside PlantTester.
It enables the T-BERD Outside Plant
Tester to decode ESFone-second
broadcast performance report messages
(PRMs) to verify remote in-service
circuit performance. With this option,
the T-BERD Outside PlantTester can
also emulate ANSI T1.403-compatible
CSU equipment to verify proper operation during circuit installation and fault
isolation as well as query performance
monitoring NIU equipment to retrieve
in-service performance data to verify
remote circuit operation. This option
supports Westell
™
equipment.