Huiqing Zhong, Alexander Gilman, and Stephen I.
Clock recovery circuits which extract the clock signal from random NRZ data are very important to the multigigabit-per-second integrated receivers.
In a PLL, the phase detector is a key component which determines several significant properties of the PLL.
Many research efforts have been made on clock recovery circuits [3], and phase-locked loops have been considered desirable for monolithic implementation of CRC.
The simulation tool is Matlab, and a PLL is modeled by decomposition into major functional blocks-phase detector, loop filter and VCO.
The loop filter is represented by its transfer function, which is determined by the loop parameters, gain of VCO and gain of phase detector.
357466053AD808_prodbrief
As the demand for bandwidth continues to grow, Analog Devices is focused on providing high-performance yet cost-effective interface IC solutions to address the needs of today's optical networking systems.
The AD808 is a 622 Mbps clock and data recovery IC with an integrated post-amplifier function.
All SONET/SDH jitter specifications are exceeded, including jitter tolerance, jitter transfer, and jitter generation.
With a substantial level of integration and superior jitter performance, Analog's AD808 is industry-proven for use in OC-12/SDH-4 fiber optic receivers.
No responsibility is assumed by Analog Devices for its use; nor for any infringement of patents or other rights of third parties that may result from its use.
stark_agl
fiber, network, Recovery, occurrences, miles, dark fiber, Disaster, distance, Internet, conduit, AGL Networks, Ability, Continuity, restore, CBD.
-- Updates periodically sent electronically -- doesn't require high bandwidth -- Recovery process -- use dark fiber to restore information from remote site.
Dark fiber "in waiting" until you need it.
Computerworld
shuttle, transmission, ground stations, Computerworld, Columbia, protocol, network, Storage, NASA, database, disaster, wing, lost, receiving, SCPS.
The shuttle Columbia disaster raised questions about how data was transmitted and retrieved from the shuttle to the Johnson Space Center.
Information is downlinked, live-time, through multiple transponders (Ku-band and S-band) to a dedicated network of ground stations, known as Space Ground Link System; onboard computers have the ability to store as much as six hours of data to be transmitted at a later time.
Here's why: The system is designed to acknowledge the transmission of several hundred information packets at a time, rather than the almost one-to-four acknowledgement under TCP.
That means that several seconds' worth of data may have been in buffer at the time that contact was lost with Columbia; the data may have been transmitted but was apparently not acknowledged or processed by the ground system.
VDR-Brochure
VDR, data set, media, recovery, tape, restore, backups, vault, candidates, selection, costs, tape device, capability, TMC, execute.
Reduce vaulted media, media handling costs, & vault storage costs.
Eliminate physical tape drives used for application backups.
1) By using the vault code assigned by the vault management process or 2) By using any combination of data set selection criteria such as data set name inclusion/exclusion patterns, creating job name, etc.
A VDR dual copy selection job is then built which is saved to a JCL library to be executed by the data center's scheduling software at a frequency set by the user to ensure data set candidates are found in tape volume cache.
VDR can restore selected dual copies or all dual copies.
DataRecoveryDS
recover, partitions, NetWare, data recovery, Features, NSS, Portlock Storage Manager, technique, repair, read-write type, verification, integrity, Verify, exact, report.
Portlock Software provides both products and services for NetWare data recovery for Traditional and NSS volumes and partitions.
Recover DOS partitions that have been accidentally deleted Recover NetWare partitions that have been accidentally deleted Recover NSS partitions that have been accidentally deleted Recover NetWare volumes that have been accidentally deleted Recover NSS volumes that have been accidentally deleted For most partition recovery operations, Portlock Storage Manager can report the date and time that the partitions were created.
3 Detect and repair logical errors with the structure of a NetWare partition.
If one technique for data recovery fails, restore the image and try another data recovery technique.
preliminary_assessment_form
IntelliRecovery, recovery, client, media, damage, Data Recovery Specialists, warranty, liability, authorizes, arbitration, loss, legal owner, evaluation, shipping, media type.
The client authorizes IntelliRecovery Data Recovery Specialists to conduct an evaluation of the media sent to determine the nature of the damage and provide an estimate of recovery cost and timing.
At which time, IntelliRecovery shall have no liability to the client or any third party.
In no event will IntelliRecovery be liable for any loss of data or loss of revenue or profits or any special, incidental, contingent, or consequential damages, however caused, before, during or after service even if IntelliRecovery has been advised of the possibility of damages or loss to persons or property.
The parties shall submit all disputes relating to this Agreement (whether contract, tort or both) to arbitration, in accordance with the Rules of the American Arbitration Association.
datarecovery http://www.mailgard.com/pdf/datarecovery.pdf
business, print-to-mail, recovery, data recovery, plan, Southern Company, business continuity, disaster recovery, customer, billing, business interruption, costs, security, cycle, ability.
backup and storage -- is certainly an essential many businesses, have experienced dimension of a sound business continuity a heightened awareness of security strategy, it alone does not provide the full on all fronts during the past year.
While it is a relatively new concept within the disaster recovery industry, print-to-mail simply means having an executable strategy in place to generate and disseminate critical documents, should your hardware, equipment or printing systems fail.
Not unlike the security of its people and physical property, a company must also take preventive measures to safeguard its financial security, at all costs.
While power outages, human error, systems failures, and natural disasters are among the most common causes of business interruption, a print-to-mail plan to support this application is absolutely critical.
servers http://www.buyerzone.com/computers/backup-remote/brochures/servers.pdf
backup, recovery, Iron Mountain, NetMass, protects, online, server, registered trademark, monitoring, SOC, restore, security, business, Windows, vaulting.
NetMass provides a managed online backup, recovery, and electronic vaulting service for Windows NT and Windows 2000 servers with its SystemSafe® Server Backup.
This technology tunneling, digital certificates, and continuous copies only the bytes that change in your files offsite vaulting to an Iron Mountain data and databases.
Each transaction is automatically and international markets, and protects more than immediately protected offsite and your half the Fortune 500.
Twenty-four hour monitoring ensures that your data is always safe and available to you.
NetMass, SystemSafe and Real-Time Recovery are registered trademark of NetMass, Inc. LiveVault is a registered trademark of LiveVault Corporation.
de241dr http://www.eegent.com/specs/de241dr.pdf
video, Signal-To-Random, display, decoder, data recovery, connectors, captions, Push-button switch, power, data recovery mode, Ohms, BNC connector, weighting, Noise Ratio, loss.
Standard Definition NTSC EIA-608B decoder used to display & capture closed captions that have been encoded into a video signal.
The DE241DR has three data recovery modes available, Printout, Data Recovery and Passthru Data Recovery.
In the Data Recovery mode the DE 241DR extracts the selected data from the input video signal and outputs it in a serial data stream through its RS232C port.
The DE241DR is a multi-standard, broadcast quality Closed Caption Display Decoder capable of processing closed caption data in Line 21 of an NTSC signal or Line 22 of a PAL signal.
BNC connectors, unity gain video output (75 Ohm source impedance) with TEXT or CAPTIONS.
data_recovery_management_03112003
recovery, restore, business, StorageConsole, APTARE, end-users, data loss, lost, ability, Data Recovery Management, recovery Management functions, real-time, immediate, business continuity, restore wizard.
The likelihood of resuming normal operations after a business interruption hinges on the crucial ability to recover lost data.
Furthermore, since lost or inaccessible data increasingly impacts your business for every minute it is unavailable, the ability to recover quickly is of the utmost importance.
To gain business agility and overcome the effects of data loss more rapidly, IT administrators desire the ability to allow end-users to perform immediate restores on the specific files they lost.
Additionally, to achieve effective recovery, IT staff demand real-time knowledge of restore success and pro-active failure notification.
To meet these critical business continuity requirements, APTARE StorageConsole empowers end-users with the ability to individually request and monitor specific file or folder restores in real-time.
CLE Information
data recovery, evidence, advanced data recovery, digital evidence, storage, electronics, forensics, common, lost, techniques, storage devices, technology, business, damages, corruption.
The course is designed to familiarize non-technical legal and law enforcement professionals with the very technical topic of forensic data recovery to allow the audience to be more effective by ensuring they have the general knowledge of: proper electronics storage media recovery techniques how to not overlook or improperly use these methods in pursuing cases involving electronic evidence.
The course provides case studies of how advanced data recovery is exploited and the implications for evidence gathering and analysis.
All of these devices are commonly used to commit crimes and civil wrong doings Digital evidence can be critical to the outcome of a legal case, civil or criminal.
VDR-White-Paper
tape, recovery, backup, VDR, virtual tape system, media, D/R process, critical data, costs, VDR function, vault, storage, vaulting, tape drives, primary backup.
It is the paper's intention to primarily focus on these processes where a virtual tape system has been implemented.
The most common process for creating dual copies is for the application or a separate backup job to create backups on tape which will then be shipped to a separate storage location.
The process is straightforward and can easily be audited.
Although simplistic, the targeted media is often dramatically under utilized due to the simple nature of the applications focus to back up its own critical datasets which results in higher costs associated with vaulting data because more slots are required and the media is under utilized.
Simplistically, the S/390 user defines to VDR what critical tape data should be duplicated.
