- G.821 error analysis at 704 kb/s, 2, 8, and 34 Mb/s
- Optional jitter generation and measurement at 2, 8, and 34 Mb/s
- Clock synthesizer for rates between 1 kb/s and 50 Mb/s
- Optional V.11 interfaces for testing X.21 leased circuits
- Available Options, Below
HP 3784A is a portable error performance/jitter test set, offering standard telecom
interfaces at 704 kb/s, 2, 8, and 34 Mb/s, with the option of codirectional interfaces at
64 kb/s and V.11 interfaces for testing X.21 leased circuits. In addition, it has binary
TTL/ECL interfaces for measurements up to 50 Mb/s, using the internal clock synthesizer. |
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HP / Agilent 3784A Shown
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HP 3784A is easy to
use with measurement presets, automatic receiver setup and error performance pass/fail
thresholds. Automatic jitter tolerance and transfer plotting routines are provided for
fast accurate testing up to and beyond CCITT limits. Through-data mode allows jitter
to be added to a structured signal for jitter tolerance testing of
demultiplexers.
APPLICATIONS
- Automated production test of transmission line and terminal
equipment
- Development and test of digital circuits that transport or
store data
- Long-term monitoring of digital transmission equipment in
the field
SPECIAL
OPTIONS
Special versions of the HP
3784A digital transmission analyzer offer error and jitter measurements at North American
and binary interfaces, using unframed data. They provide all the features of the
standard instrument with North American data rates, DS1 (1.544 Mb/s), DS1C (3.152 Mb/s),
DS2 (6.312 Mb/s) and DS3 (44.736 Mb/s), replacing the European data rates. Another
version offers STS1 (51.84 Mb/s) for testing SONET equipment.
Automatic and manual
jitter measurements offer a fast, accurate means of characterizing digital transmission
equipment. In addition, jitter can be added to any standard data signal passing
through the instrument to allow testing of demultiplexers with a framed signal.
MEASUREMENT
SUMMARY
| Error Analysis |
Error count, error ratio, error and
error-free intervals (seconds and deciseconds), percent unavailability, percent errored
and percent severely-errored seconds, percent degraded minutes. All measurements are
made simultaneously. |
| Jitter Analysis |
Peak-to-peak amplitude, jitter-hit count,
jitter-hit and hit-free seconds or deciseconds. |
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