The Guzik RWA-2550++ Read/Write Analyzer provides a wide range of parametric and PRML measurements. PRML tests are formed with integrated PRML chips. Write and read parameters of any PRML chip can be optimized in a few seconds to achieve lower error rates. All tests are implemented under WITE software, suitable for both engineering and production application. Software is run on a Pentium-based PC under Windows 95 or Windows 98.

Features:

Wide range of PRML tests including:

Bit error rate measurements
Off-track channel performance

Non-linear transition shift (NLTS) by harmonic elimination method

Optimization of PRML channels

Based on channel quality monitor
Based on error rate measurements
Customized optimization algorithms

All industry-standard parametric tests

The Spectrum Analyzer provides frequency domain tests:

Overwrite
Spectrum analysis
NLTS measurements
Signal to noise ratio (including transitional noise)
Partial erasure

Significantly reduced production test time

All engineering and production tests are implemented in WITE software on any Pentium-based PC under Windows 95, or Windows 98

Maximum Data Rates

PRML: 800 Mbits/s
Error Rate Analyzer: 800 Mbits/s, limited by PRML chip.
Bit shift analysis: Optional, 5 to 250 Mflux/s

PRML Chip Integration

Plug-in chip adapter module
Data rate 800 Mbit/s.
Integrated PRML chips from Cirrus Logic, DataPath, GEC Plessey IBM, Lucent Technology, Marvell, NEC, SSI, and others.
Custom PRML chips may be integrated upon request.

Analog Channel 971++

Bandwidth: 0.1 to 550 MHz at -3 dB

Flatness: 0.3 to 400 MHz at ± 0.2 dB

Group Delay: Flatness 200ps up to 400MHz

Programmable Attenuator: 36 dB in 2 dB steps

Typical Non-Linear Distortion: Better than 1%

(400MHz, output level 300mv p/p single-ended)

Filters: 4 low pass or programmable filters (custom cutoff frequencies for low pass filters up to 400 MHz).
High/band pass filters available for popcorn noise measurement.

Write Current: Programmable 0 to 80 mA in 0.02 mA steps.

MR Read Bias: Programmable -20 to 20 mA in 0.01 mA steps or serial control of bias current.

Differentiators: Two plug-in positions for custom modules with data range from 5 to 250 Mflux/s (optional).

Spectrum Analyzer

Features: Programmable overwrite, spectrum analysis, non-linear transition shift (NLTS), partial erasure, signal to noise ratio (SNR) including transitional noise.

Frequency range:	0.5 to 400 MHz
Accuracy:	± 0.2 dB with 70 dB dynamic range.
Selectivity:	100kHz at –3dB ; 500kHz at –60dB
Video bandwidth:	Switchable between 100 KHz and 10 KHz.
Noise floor level:	Better than –80 dB.

Head Amplifiers

More than 100 types available.
Amplifiers with separate read and write chips.
Parallel and serial control of head amplifier chip(s).
TSA – compatible cartridge design.
Factory calibrated amplification
Compatible with UP6 or UP7 universal preamplifiers

Write Channel

Frequency Synthesizer: Up to 1 GHz with better than 1Hz resolution

Frequency Stability: + 2.5ppm up to 75° C, + 1 ppm/year

Pattern Generator: 800 Mflux/s Data rate. Programmable pattern up to a maximum of 32 Kbytes of encoded data and hierarchical pattern structure.

Precompensation: Individual bit precompensation with 20ps resolution.

Jitter: 3 ps RMS.

Parametric Measurements

Bandwidth:	0.1 to 550MHz at –3dB
Flatness:	0.3 to 400 MHz at + .2dB
TAA accuracy:	± 1.5%
Typical non-linear distortion	Better than 1%
Modulation:	± 2.0%
SNR:	± 0.5 dB
Crest factor:	± 2.0%
Overwrite:	± 0.2 dB
Pulse width:	± 1.5% (or better than + (100ps).

Bit Shift Analyzer (optional)

Data rate:	250Mflux/s (333 Mbit/s with 1-7 code)
Accuracy:	Better than 100ps
Resolution:	20ps
Window Centering:	Better than 100ps

Physical

RWA-2550++:

Size: 21.6″ x 17.6″ x 7.3″

Weight: 30 lbs.

Power: 100-240 VAC ± 10%, 50/60 Hz.

Ana-971++:

Size: 19.0″ x 17.6″ x 3.3″

Weight: 10 lbs.

Read Write Analyzers-2550 Plus – Obsolete