Signal fidelity and disk triggering, combined with long memory and WaveShape Analysis are strenghts of the DDA products.

• 3 GHz bandwidth
   
• 10 GS/s sample rate/channel
   
• 20 GS/s dual-channel mode
   
• 50 Mpts / channel, 100 Mpts in two channel mode
   
• Intuitive front panel and touch screen interface
   
• Zoom and Multi-Zoom on disk sectors
   
• One-button access to Read Channel Emulation, Servo Analysis,Disk Triggers
   
• Segmented Memory for sector-by-sector parametric measurements
   
• Built-in PWxx, amplitude, pulse shape and ACSN parametric measurements
   
• Customizable with MATLAB scripts
   
• Flexible connectivity to networks, peripherals with 100Base-T Ethernet and USB

The DDA 3000 is designed for signal fidelity, whole track acquisition and analysis for read channel, media noise analysis, and head parametrics with the longest acquisition memory standard. It also provides the convenience of selectable 50 ohm and Hi-Z inputs.

Excellence in Head, Disk, Track, and Noise Analysis
The DDA series analyzers incorporate the tools to make you the most efficient. On the DDA 3000, 100 Mpts on 2 channels captures and entire track of information in a singleshot acquisition. Once captured, you can zoom in on any sector to study it in detail.

Since their inception, DDA series scopes have helped data storage design engineers improve the time to market new products and speeded up understanding and failure analysis on existing drives. The DDA 3000 continues that tradition with high-speed SiGe front end components, fast 10 GS/s analog-to-digital converters and the longest high-speed memory. Its low noise, high timing precision design accurately captures the sampling points, ensuring precise vertical and timing measurements. Each DDA is an integrated tool designed for ease of setup in acquisition, manipulation, and measurement modes.

WaveLink high bandwidth differential probes let you capture head signals
with best signal-to-noise ratio and low circuit loading.

Long Memory and Flexibility in Finding Problems
Acquire a head signal up to 3 GHz, and then QuickZoom it from the front panel. The DDA copies and expands the drive signal automatically. Simply scroll horizontally and vertically to examine any sector. Multiple zooms let you view up to eight separate areas of the head signal; each zoom comes in a distinct color.

You can measure the time between two events accurately with horizontal and vertical cursors.

Disk drive parameters let you characterize the pulse width variation or signal-to-noise ratio across a selectable region. Failure Analysis engineers can store and recall golden waveforms and panel setups to compare problem drives with the known good drives. Analog-to digital converters running at speeds up to 20 GS/s ensure the right sensitivity to measure today’s high-speed read channels. In every DDA, you can run your MATLAB scripts to view the captured signal with the filters matched to your channel and media.

 
Triggers Designed for Drive Analysis
Disk Triggers allow you to set up a series of events in the signal that then cause a trigger. For example, qualify the signal on the index signal and then capture all the sectors of information on the track. As memory is increased in the DDA, more sectors can be captured, at up to 50 picosecond/sample time resolution.Up to 25,000 sectors of data can be gathered with a DDA 3000.

High Fidelity Connection to the Drive
With the WaveLink high frequency differential probes, design engineers can measure read channel signals up to 3 GHz on the DDA 3000. The unique design ensures high impedance loading across the full bandwidth. Match the probe bandwidth to your requirement. The 3 GHz DDA 3000 offers the convenience of both Hi-Z and 50 ohm inputs that are switchable from the coupling screen.

Flexible Connectivity
All DDA series analyzers come complete with a 100BaseT/10BaseT Ethernet connection for fast connection to network printers and for remote control. In addition, a standard GPIB interface provides remote control through the IEEE-488 interface bus. Built-in USB connections, including two located of the front panel are also available for additional waveform storage and measurement setups. An optional built-in graphics printer provides strip chart performance of multiple disk sectors.

Specifications

Math Tools
Display up to 8 math function traces (F1 – F8). The easy-to-use graphical interface simplifies setup of up to two operations on each function trace. Function traces can be chained together to perform math-on-math. 

FFT includes: power averaging, power density, real and imaginary components, and frequency domain parameters. 

Pass/Fail Testing 
Test waveforms by comparing their shape to test templates, and simultaneously check multiple parameters versus selectable parameter or mask limits.Pass or fail conditions can initiate actions including document to local or networked files, or e-mail the image of the failure,save waveforms, or send a GPIB SRQ, or pulse to trigger another device.

Automated Disk Drive Measurements 

Standard Automated Measurements 

Jitter measurement for parameters including: period, cycle-cycle, frequency, and edge@lv, with JitterTrack up to 200 edges.

Advance Drive Analysis
Advance Drive Analysis capabilities of the DDA3000 include:

• Head Filter / Equilizer Emulation

• Channel Emmulation

• SAM Histograms

• Plot of SAM values

• PES Runout Analysis 

• Analog Compare

Additional waveshape analysis capabilities include:

• FFT capability includes: power averaging, power density, real and imaginary components and frequency domain parameters

• Parameter Math - add, subtract, multiply or divide two different parameters

• User-definable parameter measurements

• User-definable math functions 

DDA3000 Ordering Information