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New standards for jitter analysis

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ANRITSU has introduced the MP1590A-30, a high precision jitter analysis option for its MP1590A network performance tester that significantly enhances the measurement accuracy and repeatability of jitter generation measurements.

With the option, the MP1590A delivers a claimed industry-best ±20mUIp-p accuracy in jitter measurement, supporting the phase analysis method recommended in the revised ITU-T Draft 0.172 (2003.11).

In addition to the ±20mUIp-p accuracy, the MP1590A-30 has measurement repeatability of ±5mUIp-p, as well as very low intrinsic jitter of 50mUIp-p.

The combination of high accuracy and repeatability with low intrinsic jitter allows the network performance tester to address many of the inherent difficulties and subsequent inaccuracies of accurate jitter analysis.

The result is the ability to perform jitter analysis on SDH/SONET, OTU-1, and OTU-2 transmission equipment, at both the design and manufacturing stages.

Further adding to the MP1590A's accuracy and repeatability is a Golden TX that guarantees the jitter generation of the tester's transmitter.

Because the transmitter's jitter is a known value, it can be used as a reference transmission for calibrating jitter testers. The MP1590A also has excellent low optical power dependency in the range from -8dBm to -14dBm.

The phase analysis method specified in ITU-T Draft O.172 (2003.11) was proposed by Anritsu. All MP1590A products with the MP1590A-30 option are calibrated using this method. It uses a digital sampling oscilloscope to analyse the jitter of devices under test (DUTs).

The solution verifies pattern dependent jitter by measuring the phase difference between the data falling/rising edges and the reference clock.

Random jitter of the oscilloscope's trigger circuits is excluded by averaging many traces. An advanced DSP method is applied to the data to take account of the filter bandwidth.

Integration of the jitter analysis option is simple, due to the MP1590A's compact PCI card-based architecture. The design allows users to configure the MP1590A to conduct performance testing from 1.5Mb/s to 10.7Gb/s for electrical, 1310nm optical, and 1550nm optical signals.

Previously, engineers could only perform these multi-bit rate measurements using a multiple-instrument test system. This flexible architecture is economical because users purchase testing capability only as they need it.

Completely portable and based on standard Windows XP, the MP1590A is easy to operate, and as much as 60% smaller and 30% lighter than competitive instruments.

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