Read-Write Analyzer 2003 – Discontinued

  • 3Gbit/sec Maximum Data Rate
  • 1.5GHz Analog Bandwidth for all Parametric Measurements
  • Pattern Generator with 1psec Resolution of Bit Precompensation*
  • PRML Chip Integration up to 4Gbit/s
  • Servo Writing and Processing


* US Patent 6,760,171 B2

RWA 2003 Performance Specifications:

Pattern Generator

  • Minimum bit cell: 333psec
  • Absolute position accuracy for any transition: 5psec (typ) 10psec (max)
  • Precompensation resolution for any transition: 1psec
  • Jitter at 2Gbit/sec:
  • Random Pattern, RMS: 2psec
  • Repetitive Pattern, RMS: 2psec
  • Frequency resolution: better then 1Hz
  • Frequency stability: ±2.5ppm up to 75C, ±1ppm/year
  • Random pattern maximum length: up to 2Mbit

PRML Chip Integration

  • Data Rate: up to 4Gbit/s (limited by available commercial PRML chips)
  • PRML chips: Chips from various manufacturers are supported. New PRML chips can be integrated upon request.
  • Channel Optimization
  • Wide range of PRML Tests

Analog Channel

Bandwidth: more then 1.5GHz at – 3dB

Flatness: ± 0.2dB up to 1GHz, ±0.5dB up to 1.5GHz

Group delay: ±100psec up to 1GHz, ±200ps up to 1.5 GHz

Non-linear distortion: better than 1%
(entire bandwidth, nominal level)

Minimum pulse width (PW)
to be measured: 220psec

Parametric measurement accuracy
(entire bandwidth):

  • TAA: ±0.5dB*
  • Pulse width: 3% or 20psec
    whichever is greater*
  • SNR: ±0.5dB
  • Modulation: ± 2%*
  • Crest factor: ± 2%
  • Overwrite: ± 0.2dB

Measurements conditions: sinewave signal without noise.


* Specifications are subject to change without notice.



RWA 2003 Physical Specifications:


  • Size: 1” x 17.6” x 10.8”
  • Weight: 46 lbs.
  • Power: 110 VAC (± 10%, 50/60 Hz, 4A approximately), 230 VAC (± 10%, 50/60 Hz, 3A approximately)

RWA 2003 Options:

Spectrum Analyzer SA-960 Frequency domain tests to 960MHz
Universal Preamplifier 10 8Gbit/s write data speed,
DC to 4GHz analog bandwidth
MR7 Read/Write Amplifier for GMR and TMR heads 4Gbit/s write data speed,
3GHz analog bandwidth
Universal Preamplifier 8 2Gbit/s write data speed,
1.8GHz analog bandwidth
MR5 Read/Write Amplifier for GMR heads 2Gbit/s write data speed,
1.5GHz analog bandwidth
MR5L Low-Impedance Read/Write Amplifier for TMR heads 2Gbit/s write data speed,
2GHz analog bandwidth
Programmable Octave Filters 1-2GHz, 0.5-1GHz, 0.25-0.5GHz,
0.125-0.25GHz, 0.05-0.125GHz,
and 0.05-0.02GHz
Programmable Octave Differentiators 1-2GHz, 0.5-1GHz, 0.25-0.5GHz,
0.125-0.25GHz, 0.05-0.125GHz,
and 0.05-0.02GHz
Guzik Servo for Guzik and Non Guzik Spinstands Guzik Servo Revision 4,
Servo writing up to 1,024 sectors,
50 kHz servo sampling rate
Chip Adapter Interface CAI-4000 Up to 4 Gbit/sec data rate