5.5 Gbit/s Read-Write Analyzer RWA 4000 TDMR

RWA 4006 TDMR Read-Write Analyzer is a part of the new generation all-digital Guzik 4000 Series test systems. RWA 4006 TDMR requires Guzik signal analyzer GSA 6044 to provide a complete RWA TDMR solution for magnetic recording test applications.

The RWA 4006 TDMR Read-Write Analyzer incorporates the following modules:

• Write channel, including Pattern Generator and Frequency Synthesizer modules
• Servo channel
• PRML channel
• Filter matrix

The RWA 4006 TDMR connects to the host computer via PCI Express 1x cable connection delivering 120 MByte/s sustained data transfer rates for faster operation.

The RWA 4006 TDMR comes in space-saving low-profile package with reduced power consumption.  Optional 19-inch rack-mount installation kit is available.

Write Channel

RWA 4006 TDMR write channel includes a Pattern Generator and a Frequency Synthesizer module capable of writing patterns up to 5.5 Gbit/s in RWA 4006 TDMR model. Patterns are programmable – user-defined bit sequences can be loaded to pattern generator. One of the distinctive features of Guzik pattern generators is bit pre-compensation[1] with 1psec resolution.

Servo Channel

Servo channel includes the universal all-digital servo decoder. The decoder seamlessly supports both Guzik servo and Hard Disk Drive servo; switching between these two modes is done programmatically.  The decoder is FPGA-based, which does not require a commercial PRML channel chip to decode hard drive servo, which makes it very flexible to support all major hard drive manufacturer servo formats including Chevron DTR servo. The drive servo decoder is also used to decode synchronization signals in synchronous writing mode.

PRML Channel

PRML Channel is arranged as a PRML Chip Adapter daughter card, accessible through RWA front panel. The card integrates a commercial PRML channel IC. Guzik integrates PRML channels from leading manufacturers upon request.

Filter Matrix

Three channel programmable filter matrix of four low-pass anti-aliasing filters with cutoff frequencies up to 3.5 GHz to provide data decimation. Switchable filters of filter matrix combined with digital filters of GSA 6044 allows you to set any cut-off frequency of read channel.

AE and ECS Inputs

The RWA 4006 TDMR has two integrated low-frequency digitizing channels with 1 MHz of bandwidth and 2.6 MSa/s sampling rate for acquisition and processing signals from the following sensors:

• Acoustic Emission sensor (sensor on the cartridge), and/or
• Embedded Contact sensor (sensor on HGA).

The RWA 4008 TDMR system does not require an external digitizer box, such as PicoScope.

Analog Front-End

The RWA Systems 4000 Series support UP14 and UP12 preamplifiers and the next generation front end cartridge/headamplifier designs on Guzik Spinstands. Previous generation of head amplifiers together with UP11M are also supported by RWA 4006 TDMR Systems in one channel mode.

Digital Read Channel

All measurements are performed digitally by a separate GSA 6044 unit. For additional details please refer to the following Guzik product bulletins:

• “GSA 6000 Series Guzik Signal Analyzers” document P/N 02-107547,
• “Read-Write Analyzer Systems 4000 Series” document P/N 02-107536.

System Integration Requirements

• RWA System 4000 Series (RWA 4006 TDMR Series and GSA 6044)
• Guzik Spinstand DTR 3000, Guzik Spinstand V2002, Canon Spinstand, or HDD
• WITE32 Revision 4.50 or greater
• Windows-based host computer with two spare PCI-Express 16x slots to accommodate Guzik PCI-Express Bridge card and processing GPU card

[1] US Patent 6,760,171

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* Specifications are subject to change without notice.

 This product is protected by the following US Patents:  6,469,862;  6,760,171;  6,785,085;  7,221,220; 7,408,495.