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Key Features
- Thorough T1 testing including BERT, loopcodes, and NIU/CSU emulation
- VT100 emulation for access to T1,HDSL,HDSL2, HDSL2-4 wire performance
statistics
- Copper option adds in-depth copper measurements including DVOM, graphical
TDR, RFA/RFL, and load coil counter
- Lower repeat rates with automated close out tests, scripting, and
pass/fail tests loaded with operator specific thresholds for methods and
procedures
- Modular hardware and software architecture allows easy upgrades and
enhancements
- T-BERD® advanced stress patterns, intelligent repeater loop codes, and
BERT patterns included
- NetAnalyst control of Data Network Analyzer test devices
The JDSU HST-3000 is the ideal instrument for testing T1 services with
built-in functionality that reduces repeat rates, failures, and kickbacks and
ensures that all tests are performed the same way, every time.
Reduced budgets, smaller workforces, and untrained technicians can limit
a carrier’s ability to promptly provision T1 service. Overcoming these obstacles
requires resources that facilitate the efficient and rapid deployment of T1
services regardless of whether the T1 line uses traditional repeaters, HDSL,
HDSL2, or HDSL2 4-wire circuits.
Technicians use the HST-3000 optional copper test features to qualify and
troubleshoot the circuit, and the T1 test features to bit-error-rate test (BERT)
the line and verify the service. With the VT100 emulation feature, the HST-3000
provides instant access to HDSL/2/4 performance statistics. There is no need for
technicians to switch instruments or modules; the HST-3000 combines all the
tests into one tool with one common interface. The HST-3000 custom scripting
feature automates the testing process, ensuring that tests are done completely
and thoroughly every time and helps reduce repeat rates and failures by ensuring
that the processes used to test are consistent. With the HST-3000, technicians
can complete faster service turn-ups, reduce failure rates, and lower costs,
which are all key components to surviving in today’s competitive
environment.
Loopback Testing
Preprogrammed HTU-C, HTU-R, doubler, T1 CSU, T1 NIU, and repeater loopcodes
enable the HST-3000 to quickly sectionalize transmission problems. In addition,
Pairgain, Teltrend, Adtran, Westell, and ADC equipment specific loopcodes, as
well as user configurable loopcodes, are supported. The test set can also
emulate T1 customer premises equipment, simulating a CSU or NIU. CSU/NIU
emulation allows the test set to be looped up from the central office to verify
T1 service across the entire length of the span.
Dual T1 Transmit and Receive
The HST-3000 dual T1 transmit and receive capabilities give the ability to
measure timing slips, passively monitor T1 circuits in both directions, and
perform drop and insert testing. Using the split screen view in dual monitor
mode, a span is easily sectionalized to quickly determine the location of a
fault. Drop and insert testing allows the user to BERT single DS0s within a T1,
without taking the entire T1 out of service.
HDSL/2/4
Through the test instrument’s VT100 emulation feature, technicians can access
HDSL and T1 network equipment for equipment configuration, specific performance
data measurements, and loop up capabilities, without having to carry a laptop
into the field. With JDSU’s repeater extender, technicians can also gain access
to the circuit at T1 repeaters.
Fractional T1
The HST-3000 performs fractional T1 (FT1) BER tests on selected channels to
verify transmission on contiguous and noncontiguous FT1 bandwidth. This allows
the technician to verify circuit performance with VF and 577 Hz ID tones at
various output levels. In addition, the HST-3000 uses a variety of advanced
stress patterns such as 55 octet, T1-DALY, and other long user patterns as
recommended by the ANSI T1.403 standard to stress repeatered T1/FT1 circuits.
With its enhanced T1 features and functions, the HST-3000 is the ideal test
instrument for technicians to troubleshoot and qualify the line swiftly and
effortlessly.
Flexible and Rugged Design
The HST-3000 incorporates a rugged, weather-resistant design and long battery
life that are ideally suited for use in the field and its modularity allows for
field upgrades to support new testing requirements. The HST-3000 is easily
upgradeable with technologies and advanced options that support the changing
needs of service installers and its dynamic configurability allows it to be used
by different technicians with different responsibilities to perform a wide
number of tests. Standard Ethernet, USB, and serial connections offer
flexibility to easily download software and offload captured test data.
Overview
Beginning with the construction of the circuit, and throughout the life cycle
of the service, operators must verify that customers are receiving the quality
they ordered. Whether qualifying the copper before handing the circuit over to
an installation and maintenance crew, a technician must run a bit-error-rate
test (BERT) to prequalify the circuit to ensure that it will run T1 service
error free.
DS1 BERT
To verify proper T1 transmission over a traditional repeatered T1 or an HDSL
circuit, a technician needs to test the entire span from the central office to
the customer premises. A true end-to-end service test requires stressing the
span and verifying the error tolerance of the copper plant and network
equipment. The HST-3000 includes the advanced stress patterns of the T-BERD to
properly stress the network.
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