Product category:
Monitoring and sensor equipment and systems
News Release from: Yokogawa Europe - Test and Measurement | Subject: TA220 digital jitter meter
Edited by the Manufacturingtalk Editorial
Team on 04 October 2005
Jitter meter aids optical disc
production tests
Yokogawa has introduced a new version of its TA220 digital jitter meter.
Yokogawa has introduced a new version of its TA220 digital jitter meter The meter's new features are designed to aid adjustment and inspection in production-line testing of the next generation of Blu-ray high-density optical discs
This article was originally published on Manufacturingtalk on 22 Apr 2008 at 8.00am (UK)
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New functions incorporated as standard include a data-to-clock high-speed calculation mode, in which the measurement result can be refreshed every 2ms when measuring the data-to-clock jitter, compared with the normal refresh rate of 50ms at a gate time of 30ms.
Also included is a data-to-clock jitter measurement function that 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 non-linear 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 equalizer 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 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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