81490A Datasheet, PDF (2/4 Pages) Agilent(Hewlett-Packard) – Reference Transmitter

81490 Reference Transmitter
Benefits
Agilent’s 81490A Reference Transmitter is de-
signed to offer excellent eye quality as a reference
for testing 10 GbE-L and 10 Gb-E according to IEEE
802.3ae and according to 10 GFC Fibre Channel
specifications. The module is fully integrated into
the industry standard LMS 816xB platform.
Offering both 1310 and 1550 nm in one module
gives the fastest reconfiguration between these
two transmission bands without reconnecting.
The integration in the LMS mainframe offers an
integration of the reference transmitter into the
4917A stressed eye software package. Of course a
separate usage of the transmitter is also supported
with SCPI language.
The separation of the signal source and the modu-
lator is the only way to offer a zero-chirp modula-
tion. This is essential for a clean and repeatable
eye diagram when modulating with an appropriate
clean external source to fulfill the requirements of
the IEEE standard. Another advantage of this de-
sign compared to directly modulated transmitters
is the wide extinction ratio range that can only be
achieved with this design.
™ Repeatable and reproducible measurements
permit lower production test margins and
improved specifications of the characterized
devices.
™ Reliable measurements ensure comparability
of the test results.
™ Support for full compliance to IEEE 802.3
stressed eye test in combination with the
N4917A Optical Receiver Stress Test solu-
tion.
™ Wide extinction range offers highest test
range coverage to ensure best quality of the
tested devices under all target operating con-
ditions.
™ Rapid test reconfiguration with dual-wave-
length to switch between 1310 nm and
1550 nm by remote control or manually with-
out exchanging a module.
™ Scalability with integration into industry-
standard Agilent LMS platform extends your
optical workbench capabilities.
Applications
™ Reference transmitter for stressed eye compli-
ance test according to IEEE 802.3.
™ Creation of arbitrary optical modulation signals
in combination with waveform generators.
™ General transmission system test with special
pulse patterns in combination with a pattern
generator.
81490A
Coupler
Modulator Bias
Ctrl
DFB - Laser
1310 nm
DFB - Laser
1550 nm
RF -
Amplifier
Optical Modulator
2
Data in
Data out