Maximum Data Rates
PRML: up to 1G bit/s
Error rate analyzer:
- Guzik PRML channel: up to 1G bit/s
- Chip Integration: up to 1G bit/s (limited by PRML chip capability)
Digital Parametric Measurements
Bandwidth: 0.1 to 550 MHz at -3 dB
Flatness: 0.3 to 400 MHz at ±0.2 dB
Typical non-linear distortion: better than 1%
Digital measurement accuracy (repetitive patterns):
- TAA: ±0.5% (down to 15 dB SNR)
- Pulse width: ±1.0% (down to 15 dB SNR)
- SNR: ±0.2 dB (down to 15 dB SNR)
- Modulation: ±1%
- Crest factor: ±1%
PRML Chip Integration
Plug-in chip adapter module
Data rate: up to 2G bit/s (PRML chip limited)
PRML chips: from Cirrus Logic, DataPath, GEC Plessey, IBM, Lucent Technology, Marvell, NEC, SSI, and others.
New PRML chips integrated on request.
Optimization
- Based on channel quality monitor
- Based on error rate measurements
- Customized optimization algorithms
Wide range PRML Tests including
- Bit error rate measurements
- Off-track channel performance
Digital Scope Mode
- Single shot 2Gsamples/s, 8 bit
- Memory: up to 4 Mbyte
- Analog bandwidth: 0.1 to 550 MHz at -3 dB
- Flatness: 0.3 to 400 MHz at ±0.2 dB
Analog Channel 985B PRML
Bandwidth: 0.1 to 550 MHz at -3 dB
Flatness: 0.3 to 400 MHz ±0.2 dB
Group delay: flatness 200 ps, up to 400 MHz
Programmable attenuator: 36 dB in 2 dB steps
Typical non-linear distortion: better than 1% (400 MHz, 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
Built-in Spectrum Analyzer
Supports frequency domain tests
- Overwrite
- Spectrum analysis
- NLTS measurements
- Signal to noise ratio (including transitional noise)
- Partial erasure
- Frequency range: from 0.5 to 400 MHz
- Frequency resolution: 10 Hz
- Accuracy: ±0.2 dB within 70 dB dynamic range
- Selectivity:Switchable -100 kHz at -3 dB; 500 kHz at -60 dB
140 kHz at -3 dB, 850 kHz at -60 dB
- Video bandwidth: 100 kHz
- Noise floor level: better than -80 dB
Write Channel
- Frequency Synthesizer: up to 2 GHz with better than 1 Hz resolution
- Frequency stability: ±2.5 ppm up to 75 C, ±1 ppm/year
- Pattern generator: Up to 1G flux/s, programmable pattern up to a maximum of 32 Kbytes of encoded data and hierarchical pattern structure
- Pre-compensation: three pre-compensation values with a 5 ps resolution can be assigned to any bit in a pattern, or an unlimited number of pre-compensation values at 20 ps resolution can be assigned to any bit in a pattern
- Jitter: 10 ps RMS (typical) for a random pattern
Guzik MR Head Amplifier
(refer to separate brochure for detailed specification)
- Write data speed: more than 1Gflux/s
- Rise/fall time of write current: < 800 ps
- Write current: programmable 0 to 80 mA
- Write to read recovery time: < 1.0 µs (typ.)
- Differential voltage sense amplifier
- Bandwidth: >400 MHz
- MR Bias current: programmable -8 to 8 mA (+/-12 mA optional)
Head Amplifiers (commercial chip based
- More than 100 types available
- Amplifiers with separate read and write chips
- Parallel/serial control of head amplifier chip
- TSA & CAM style cartridge designs
- Available in variety of wire and TSA terminations.
- Write current: programmable 0 to 80 mA in 0.02 mA steps.
- MR read bias: programmable up to 20 mA (the range of the bias current depends upon the type of head amplifier) in 0.01mA steps or serial control of bias current.
Physical
RWA-2585B:
- Size: 21.6″ x 17.6″ x 7.3″
- Weight: 39 lbs.
- Power: 100-240 VAC (±10%, 50/60 Hz)
ANA-985B:
- Size: 19.0″ x 17.6″ x 3.3″
- Weight: 10 lbs
Specifications subject to change with out notice