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Tunable SFP+ Optical Transceiver with Limiting Electrical Interface

August 21, 2019 by freemexy  

Tunable SFP+ Optical Transceiver with Limiting Electrical Interface

 

The Lumentum tunable SFP+ module is a high performance tunable pluggable transceiver for use in the C-band window covering 1528 nm to 1566 nm. The module supports data rates from 9.95 Gbps to 11.3 Gbps and is provided in an SFP+, MSA-compliant package.fiber optic cable products

The optical transmitter utilizes the Lumentum tunable ILMZ chip to provide a high performance, low cost 10 Gbps transceiver. Channel tuning is supported on the ITU-T 50 GHz grid across full C band with ±2.5 GHz stability. Wavelength and frequency tuning modes are supported in accordance with SFF-8690.

The receive path comprises an APD receiver with limiting amplifier.

Mechanical dimensions, connecters and footprint conform to SFP+ MSA. The module size is 56.5 mm L x 13.9 mm W x 11.85 mm H with 20-pin electrical connector.
Features
1550 nm ITU-T C-band 50 GHz spacing tunable DWDM SFP+ transceiver
Data rate 9.95-1.3 Gbps
Supports 80 km link distances
Negative chirp transmitter with ILMZ (integrated laser Mach Zehnder) TOSA
APD receiver with limiting amplifier
Positive power supply lines: 3.3 V
Operating case temperature range: up to industrial temperature
Compact size (56.5 mm L x 13.9 mm W x 11.85 mm H)
Compliance
SFF-8431 - enhanced 8.5 and 10 Gigabit small form factor pluggable module (SFP+)
SFF-8432 - improved pluggable form factor
SFF-8690 - tunable SFP+ memory map for ITU frequencies
SFF-8472 - diagnostic monitoring interface for optical Xcvrs
INF-8074i - SFP (small form factor) transceiver
IEEE802.3ae CL 52 - IEEE 802.3 standard (10Gigabit Ethernet clause)
MIL-STD-883, method 3015.4
IEC61000-4-2:edition1 (air discharge)
Class 1 laser safety

Fiber Optic Transceivers

August 21, 2019 by freemexy  

Fiber Optic Transceivers


Key Features
Add a 1000Base-LX connection to switches with mini GBIC/SFP ports
Connect switches up to 10km away with each other
TTL signal detect indicator
Compliant with IEEE802.3z Gigabit Ethernet
Easy to install and hot-swappable
Differential LVPECL input and output
Single 3.3V power supply
Duplex LC connector
Product Overview
The LevelOne GVT-0301 SFP (Small form-factor pluggable) Transceiver provide flexibility for utilizing fiber Gigabit network connections in both data and telecommunication applications.optical sfp connector

Support for Mini GBIC Connectivity
GVT-0301 SFP Transceiver Series transceivers support LX standard optic with single-mode mini GBIC connectors. They provide signal amplification to transfer and receive data between two ends of mini GBIC ports.

Multi-Purpose Usage
GVT-0301 SFP transceivers can be used for distributed multi-processing, switch-to-switch interfaces, high-speed I/O file transfer, bus extension applications, and for a channel extender or data storage applications.
The LevelOne GVT-0301 can be used in any LevelOne switch or modules that support SFP modules.

Small Form-Factor Pluggable Transceiver Modules

August 21, 2019 by freemexy  

Small Form-Factor Pluggable Transceiver Modules

 

Small form-factor pluggable (SFP) transceiver modules range from Fast Ethernet to Gigabit Ethernet speeds. Applications include Gigabit Ethernet switches and routers, fiber channel switch infrastructure, xDSL applications, and metro edge switching.sfp module transceiver

SFP transceiver modules are MSA compliant to ensure interoperability with all other MSA-compliant networking devices.

Transition Networks' SFP transceivers are the ideal solution for any network supporting a large variety of data rates and fiber types. Our SFP modules are also available as Cisco compliant as well as HP and Juniper compliant providing the right cross-platform connectivity for your network. Hardened SFP transceivers are also available to support harsh environments and support network connections in hardened devices. Lastly, our SFP modules can support extra features including OTDR (Optical Time-Domain Reflectometer) and Ethernet Extension to save time and money upgrading and monitoring your network. View our SFP modules below.

Presentation Box + Display to feature innovative programs at DC and Foxwoods Select Shows

August 21, 2019 by freemexy  

Presentation Box + Display to feature innovative programs at DC and Foxwoods Select Shows

 

For the 9th year Presentation Box + Display will be showcasing their products at the DC and Foxwoods Select Shows . As a leading jewelry packaging and display supplier for the independent retail jeweler they will be offering both custom packaging as well as stock boxes, pouches and bags. Their full selection of domestic made, tariff free packing will be on display as well.luxury jewelry packaging boxes

At the Shows you can learn more about their FlexShip blanket order program that ensures you never run out of boxes and allows the customer to take advantage of bulk pricing and on-site storage. As well as their QuickShip program that gets your packaging to you within 72 hours.

Additionally you can view their "Only What You Need" hand wrapped displays that are made in Rhode Island with a 3 - 5 week lead time and the lowest minimum order quantity in the industry, according to Presentation Box + Display. O.W.Y.N. is designed to remove the hassle from ordering displays - making a store refresh as easy as possible.
Presentation Box + Display offers a one-stop shop for all your branded packaging and display needs with free imprinting, free print-die and no hidden costs.

Why 'BPA Free' May Not Mean a Plastic Product Is Safe

August 21, 2019 by freemexy  

Why 'BPA Free' May Not Mean a Plastic Product Is Safe

 

The study started as an accident. Geneticist Patricia Hunt of Washington State University and her team were investigating the reproductive effects of BPA in mice. Housed in BPA-free plastic cages, the test group got doses of BPA through a dropper; the control group didn't.plastic cosmetic storage boxes

Our control data just started to get really wonky," Hunt says. The differences between it and the test group vanished, and many control mice started showing genetic issues. Though initially confused, the team discovered that some of the plastic caging was damaged and was leaching bisphenol S, or BPS-an alternative to the now infamous plastic component BPA.

It was like déjà vu, Hunt says. Twenty years ago, she'd had the same issue with BPA in polycarbonate mouse cages. Now her study of the effects of several BPA alternatives, prompted by the latest accidental findings, suggests that these replacements impact reproduction in mice in much the same way.

Of course, it's hard to draw conclusions between the effects in these tiny furry critters and those in our comparatively massive fleshy forms, but the latest work adds to a growing body of evidence that suggests all is not safe in the world of BPA-free plastics. What's more, the study underlines a broader issue in commercial compound development: When chemicals are removed from the market, they're often replaced by others that not only look similar-but act similarly in our bodies.

"We have to play catch up as disease detectives," says Leonardo Trasande, director of the division of environmental pediatrics at NYU Langone Health, who was not involved in the research. But this detective work is a losing proposition, he says likening it to a game of "chemical whack-a-mole."

32 Channel Passive UTP Video Balun, Passive Balun, CCTV Balun, BNC Balun (VB232)

August 21, 2019 by freemexy  

32 Channel Passive UTP Video Balun, Passive Balun, CCTV Balun, BNC Balun (VB232)


Adopt differential signal transmission with excellent anti-jamming ability
Save project wire expenses, each a pair of twisted pair wire transmits one channel of video signal and one common Cat-5 unshielded twisted pair wire can simultaneously transmit four channels of video signal
Full-motion CCTV video at distances up to 330m when used with any passive transceiver
Up to 1500m with any active UTP video receiver
Outstanding interference rejection, transient protection
Steel case and spray painting
Connectors: RJ45, BNC female connector
Clamp modular plugs for a Cat-5 unshielded twisted pair wire according to the connection order of TIA/EIA-568B (please refer to the following figure)´╝îconnect the clamped modular plugs to the RJ45 sockets, connect the coax to the connection terminal.hd video transmission

Passive Transceiver with Surge Protection

August 21, 2019 by freemexy  

Passive Transceiver with Surge Protection

 


The Vigitron Vi1001F is a passive transmission device that transports video signals over unshielded twisted pair wires, point-to-point, for distances up to 750 feet (228 m). Distances up to 3,000 feet (915 m) can be achieved when it is used with Vigitron active receivers.cctv passive video balun

It uses category 2-7 twisted pair wires, is easy to install and cost effective, and does not require power. The Vi1001F's unique and compact design allows mounting directly to the video source or receiver without needing any additional cabling. It is compatible with all qualified cameras with built-in twisted pair transmitter.

The Vi1001F has built-in surge suppression to protect video equipment against damaging voltage spikes. Its crosstalk and noise immunity ensure quality video signals. The Vi1001F offers quality video in a compact size. It is ideal for a wide variety of security and surveillance applications.

Power and Cooling Implications of Power-over-Ethernet on Infrastructure Design

August 21, 2019 by freemexy  

Power and Cooling Implications of Power-over-Ethernet on Infrastructure Design


Power-over-Ethernet (PoE) enables the use of a single Ethernet cable for simultaneous delivery of power and data, eliminating a significant number of electrical receptacles and circuits. The benefits include simplified infrastructure management, reduced power consumption and operational costs, improved safety, greater flexibility regarding placement of devices, and higher reliability (with less infrastructure there is less opportunity for error). However, a lack of understanding of how and where power is sourced and used in a PoE environment may result in unanticipated downtime. This can be caused by insufficient available power or inefficiency due to improperly sized cooling in the equipment room.
Understanding the basics of PoE and the implications of its use promotes favorable decisions concerning electrical and mechanical system design for spaces where this equipment may be installed.ethernet switch design
PoE Components, Terminology, and Capabilities
Before delving too deeply into specific power and cooling needs for PoE applications, one must first understand the basic required components for PoE applications and the typical types of devices that take advantage of its benefits.
Figure 1 illustrates the components and basic connectivity found in every PoE application.A PoE injector is the Power Sourcing Equipment (PSE) that supplies power into the powered device (PD). PSEs generally fall into two categories: mid-span and end-span. A mid-span PSE is a unit that injects power downstream, after the network switch. It is typically connected in-line, between the network switch and the patch panel, adding power to the line. The other type of PSE is the end-span, which injects the power, along with the data stream, at the network switch itself. Although this document specifically addresses the power and cooling requirements for PoE switches (end-span PSEs), the same concepts and results apply equally where mid-span PSEs are utilized.
Figure 2 - Typical Mid-span PoE injectors Originally, typical applications for PoE included IP phones and wireless access points since the IEEE PoE Standard (IEEE Std. 802.3af) permitted a maximum of 15.4 Watts of power delivered over the twisted-pair data cabling. However, the drive to achieve greater energy efficiency, integrate building systems, and reduce costs created demand for devices that require more power. In October 2009, the IEEE approved the "PoE+" Standard (IEEE Std. 802.3at). This allows up to 30 Watts of power delivered over four pairs of data cabling (category 5 or better). PoE+ supports IP-based security camera and card access readers, radio-frequency identification (RFID) tag readers, bar code scanners, print servers, and Building Automation System (BAS) devices. With the onset of PoE+, a whole spectrum of additional, higher-powered devices become possible - some still emerging.

SoundChip Opens New Noise Cancelling Engineering Centre in UK

August 21, 2019 by freemexy  

SoundChip Opens New Noise Cancelling Engineering Centre in UK


SoundChip, a Lausanne-based global leader in hearable sound technology, announced the opening of a new engineering centre focused on the research and development of advanced noise cancelling (NC) technology. "Noise cancellation is an increasingly important feature for our customers, especially in the Bluetooth and True-Wireless-Stereo (TWS) product segments. As customers look to deploy class-leading noise cancelling and smart audio features across a wider range of products and price-points, it is imperative that we grow our capacity to support them, and our new facilities represent an important first step", said Mark Donaldson, CEO of SoundChip.otp voice chip

Conveniently located between Manchester and Liverpool airports, the new facilities, which form part of the SciTech Daresbury campus, comprise three biometrically secured laboratories, enabling "IP Clean Room" end-product development. Each lab is provisioned with its own state-of-the-art acoustic measurement equipment, including diffuse-field-emulators and reference head-and-torso-simulators (HATS). Additionally, to facilitate the precise cataloguing of developmental work-in-process (WIP), the centre also comprises a secured materials repository.

SoundChip also announced today that it would support the design-in of certain third-party NC chips in addition to its own class-leading and power-efficient HD-PA devices by way of the company's proven Waypoints end-product development process and Soundstation computer-aided-engineering and production tools.

Mark Donaldson stated, "SoundChip recognises that in a growing marketplace, integrated circuits are optimised for specific target applications. With this announcement today, we have chosen to provide our customers with access to a more diverse range of electronics and software solutions where it makes best sense to do so."

Wired for sound: A third wave emerges in integrated circuits

August 21, 2019 by freemexy  

Wired for sound: A third wave emerges in integrated circuits


As that information travels at the speed of light across the globe, the energy of the light waves bouncing around inside the silica and polymer fibres create tiny vibrations that lead to feedback packets of sound or acoustic waves, known as 'phonons'.This feedback causes light to disperse, a phenomenon known as 'Brillouin scattering'.

For most of the electronics and communications industry, this scattering of light is a nuisance, reducing the power of the signal. But for an emerging group of scientists this feedback process is being adapted to develop a new generation of integrated circuits that promise to revolutionise our 5G and broadband networks, sensors, satellite communication, radar systems, defence systems and even radio astronomy.sound chip recordable

"It's no exaggeration to say there is a research renaissance into this process under way," said Professor Ben Eggleton, Director of the University of Sydney Nano Institute and co-author of a review paper published today in Nature Photonics."The application of this interaction between light and sound on a chip offers the opportunity for a third-wave revolution in integrated circuits."

The microelectronics discoveries after World War II represented the first wave in integrated circuitry, which led to the ubiquity of electronic devices that rely on silicon chips, such as the mobile phone. The second wave came at the turn of this century with the development of optical electronics systems that have become the backbone of huge data centres around the world.

First electricity then light. And now the third wave is with sound waves.Professor Eggleton is a world-leading researcher investigating how to apply this photon-phonon interaction to solve real-world problems. His research team based at the Sydney Nanoscience Hub and the School of Physics has produced more than 70 papers on the topic.

Working with other global leaders in the field, today he has published a review article in Nature Photonics outlining the history and potential of what scientists refer to as 'Brillouin integrated photonics'. His co-authors are Professor Christopher Poulton at the University of Technology Sydney; Professor Peter Rakich from Yale University; Professor Michael Steel at Macquarie University; and Professor Gaurav Bahl from the University of Illinois at Urbana-Champaign.

Professor Bahl said: "This paper outlines the rich physics that emerges from such a fundamental interaction as that between light and sound, which is found in all states of matter.

"Not only do we see immense technological applications, but also the wealth of pure scientific investigations that are made possible. Brillouin scattering of light helps us measure material properties, transform how light and sound move through materials, cool down small objects, measure space, time and inertia, and even transport optical information."Professor Poulton said: "The big advance here is in the simultaneous control of light and sound waves on really small scales.

"This type of control is incredibly difficult, not least because the two types of waves have extremely different speeds. The enormous advances in fabrication and theory outlined in this paper demonstrate that this problem can be solved, and that powerful interactions between light and sound such as Brillouin scattering can now be harnessed on a single chip. This opens the door to a whole host of applications that connect optics and electronics."

Professor Steel said: "One of the fascinating aspects of integrated Brillouin technology is that it spans the range from fundamental discoveries in sound-light interactions at the quantum level to very practical devices, such as flexible filters in mobile communications."The scattering of light caused by its interaction with acoustic phonons was predicted by French physicist Leon Brillouin in 1922.