Product category:
Test equipment
News Release from: Yokogawa Europe - Test and Measurement | Subject: TA220
Edited by the Processingtalk Editorial
Team on 04 October 2005
Digital jitter meter features for
optical discs
The new TA220 digital jitter meter has new features designed to aid adjustment and inspection in production-line testing of the next generation of Blu-ray high-density optical discs
Yokogawa has introduced a new version of its TA220 digital jitter meter with new features designed to aid adjustment and inspection in production-line testing of the next generation of Blu-ray high-density optical discs New functions incorporated as standard include a data-to-clock high-speed calculation mode, in which the measurement result can be refreshed every 2 ms when measuring the data-to-clock jitter, compared with the normal refresh rate of 50 ms at a gate time of 30ms
This article was originally published on Processingtalk on 4 Jun 2004 at 8.00am (UK)
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Also included is a data-to-clock jitter measurement function which excludes the edges adjacent to 2T marks and spaces, making it suitable for testing the higher-capacity dual-layer Blu-ray discs.
Available as an option is a limit equaliser function incorporating a DSP-based nonlinear equaliser circuit to carry out tests specified in the Blu-ray Disc standard.
If required, the limit equaliser option can be installed along with the conventional equaliser circuit.
In addition to the Blu-ray Disc equaliser and a phase-lock-loop (PLL) circuit that allow direct measurement of jitter from RF signals, the TA220 incorporates Ethernet and GP-IB communication functions as standard.
Blu-ray is a next-generation optical disc format jointly developed by the Blu-ray Disc Association (BDA), a group of leading consumer electronics and PC companies.
The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.
A single-layer Blu-ray Disc can hold 25 Gbyte, which can be used to record over two hours of HDTV or more than 13 hours of standard-definition TV.
There are also dual-layer versions of the discs that can hold 50 Gbyte.
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