TOP BATTERY

Valve-regulated lead-acid battery “VRLA” (also known as maintenance-free battery) as a back-up power supply in various fields, the extensive use of the surface sense of the maintenance-free. As the power industry and the telecommunications industry  base stations, substations and other fields increasingly high degree of unattended, resulting in all kinds of batteries in the course of problems. Such as: electric power system minutes / closing operation failed or UPS failure, the communications industry breakdown in communications, and so on, will have serious consequences. The traditional methods of battery maintenance takes a lot of manpower and material resources on a regular basis for testing. 

ZJK3-B Series battery monitoring system is mainly used in various industries for remote monitoring of battery, so that staying at home and can always understand the different batteries on-line running. Power DC operating power supply, communications, power or large capacity UPS systems are used by more than just a concatenation of the accumulator battery. Since the battery used in tandem, when either a battery failure, may cause the entire battery pack does not work.

To prevent accidents, DC power  toshiba PA3399U-1BAS battery， toshiba PA3399U-1BRS batterysystem equipped with multi-battery tester. According to test theory can be divided into the following categories:

1. Judged by measuring the internal resistance of battery performance battery 

This method must be discharged battery pack can not be used in-line continuous monitoring. And the battery internal resistance with ohm impedance and electrochemical impedance reflects a variety of factors, measured under different conditions of battery internal resistance vary greatly, it is difficult to make accurate judgments on the battery performance. And measurement principles of complex and costly.

2. By measuring the battery terminal voltage to determine battery performance 

This method is easier to achieve cell-line inspection. The battery terminal voltage and batteries are the relationship between electric potential and resistance, measuring the battery terminal voltage comparison can reflect the actual state of the battery  toshiba PA3399U-2BAS battery， toshiba PA3399U-2BRS battery. Produced using this principle battery inspection device in the power system has been widely used. But the measurement of each battery terminal voltage must be on the connection, when the cell number of more or distance, it will use a lot of sample cables, installation of wiring complexity, and the quantity likely to cause ground cable or short circuit accident. Thus the method is used for the following 18 test battery.
2, ZJK3-B surveillance system is characterized by

Composition and Theory 

ZJK3-B battery monitoring systems use a dedicated integrated chip monitors the battery voltage, current, temperature, and the remaining capacity of the dedicated chip and a microprocessor packaged together into a single sensor, a battery of data collected for each sensor, 20 sensors were divided into a Groups http://www.ec8080.com/connected to a hub. Hub Management 20 sensors and collected data transmission to the display units, display unit for data processing and adoption of large-screen liquid crystal display. May be right temperature, voltage and current parameters set alarm conditions, when there is an exception signal control the output relay sound and light alarm. Display unit can connect up to 10 hubs, simultaneous monitoring of up to 200 cells.

Microsoft has released a tool that lets netbook owners install Windows 7 on their machines using a USB flash drive, sidestepping the usual requirement of a DVD drive.

The utility, Windows 7 USB/DVD Download Tool, creates a bootable flash drive from a downloaded .iso file, or disk image, of Windows 7, and can be purchased from Microsoft’s online store.

“This tool allows you to create a copy of the .iso file to a USB flash drive or a DVD,” said Microsoft in the instructions accompanying the tool. “To install Windows 7 from your USB flash drive or DVD, all you need to do is insert the USB flash drive into your USB port or insert your DVD into your DVD drive and run Setup.exe from the root folder on the drive.”

The USB/DVD Download Tool solves the problem facing netbooks users who want to upgrade to Windows 7, since virtually all netbooks lack a DVD drive. Earlier this year, rumors circulated that Microsoft might offer Windows 7 upgrades on a flash drive, but the talk turned out to be nothing but wishful thinking.

Users need a 4GB USB drive to install Windows 7 on a PC without an optical drive, Microsoft said. Other requirements include .NET Framework 2.0 or later, and the ability to run as administrator on the to-be-upgraded netbook.

The netbook’s BIOS must also be modified to set the boot order so that the USB drive is first on the list. “Please see the documentation for your computer for information on how to change the BIOS boot order of drives,” Microsoft recommended.

Last Thursday, Microsoft warned users to seek help if they were unfamiliar with tweaking the BIOS. “If you are not comfortable making this type of BIOS change, I recommend you seek some assistance from your favorite ‘tech geek,’” Microsoft spokesman Brandon LeBlanc urged in an entry to the Windows 7 blog .

Because most netbooks run Windows XP, only a “clean” upgrade to Windows — Microsoft dubs it “Custom” during the installation — is possible. That requires users to back up data and application settings before upgrading, then restore the data and settings, as well as reinstall all applications. (This Computerworld FAQ outlines the steps to take before beginning the Windows 7 upgrade from XP.)

The USB/DVD Download Tool is a 947KB file that can be downloaded from Microsoft’s site ( download .exe file ).

Lenovo announced two new additions to the business-oriented ThinkPad family, the 14-inch ThinkPad SL410 and 15.6-inch SL510, both of which come with Windows 7.

These new ThinkPads are designed with small- to-medium businesses in mind and feature higher-resolution webcams, clearer microphones, and a microphone mute button for voice and video conferencing. The higher-end configurations for the SL410 and SL510 feature built-in 3G broadband internet via AT&T mobile broadband, as well.

Both models are available in different configurations that range from $500 to $700, the lower-end model with a 160GB hard disk drive and an Intel Celeron T3000 1.8GHz processor and the higher-end with a 250GB hard disk drive and an Intel Core 2 Duo T5870 2.0GHz processor. All configurations have the same integrated Intel GMA 4500MHD chipset, Dual Layer 8x DVD Recordable optical drive, 4-cell battery, 802.11n Wi-Fi networking, HDMI and VGA output, and multitouch trackpad.

These models also fall under Lenovo’s Windows 7 Enhanced Experience Certification, which is advertised as booting and shutting down up to 56% faster than other laptops on an identical un-optimized configuration. (Haven’t heard of it? Read our news post here.)

The ThinkPad SL410 and 510 are currently available through retail channels (TigerDirect, Amazon.com, and Best Buy, though Best Buy only has the SL410) as well as Lenovo’s website

Acer will release a new laptop to coincide with Thursday’s Windows 7 launch that can display movies and games in 3D while allowing everyday applications to appear in their usual 2D format.

The Aspire 5738DG has a 15.6-inch 3D screen, as well as software and special glasses from a company called TriDef to enable the 3D experience. The laptop, a powerful desktop replacement, delivers images “that literally pop from the screen,” according to Acer.

The TriDef system displays 3D content such as movies and games, and can also take standard 2D content and make it appear 3D, Acer said. TriDef also sells software called TriDef 3-D Experience through its Web site, which makes programs like Google Earth appear in 3D.

To make watching 3D movies more compelling, Acer has built Dolby surround sound into the laptop. Users can also run common applications like spreadsheets and e-mail programs in 2D.

Since its introduction at movie theaters decades ago, 3D has made its way into TVs, webcams, binoculars and other products. Nvidia offers a product for PCs called 3D Vision, a hardware and software package that brings 3D images to desktops.

Acer’s laptop weighs a hefty 6.16 pounds (2.79 kilograms) and runs on a 2.2GHz Intel Core 2 Duo T6600 processor, with 2MB of performance-boosting cache memory. The TriDef 3D screen has a special coating that reduces the need for a separate graphics card to process 3D content.

Instead, the Acer laptop has integrated ATI Mobility Radeon HD 4570 graphics with support for 512MB of dedicated video memory. It runs on Microsoft’s new Windows 7 Home Premium OS, which is launching Thursday. It comes with 802.11b/g/n Wi-Fi networking and supports up to 4GB of RAM and 320GB of hard-drive storage.

The laptop will be available through retail stores on Thursday, Acer said. It didn’t announce any plans for international availability.

Next week Microsoft was supposed to be in the spotlight with the launch of Windows 7, but the way it’s shaping up Apple could steal the limelight. With Microsoft’s Windows 7 launch only days a way, sales of Apple Macs are by far outshining those of Windows PCs, according to two leading analyst firms.

In spite of a bleak economy, overall PC sales in the United States are actually finally starting to bounce back a bit, stepping up 2.5 percent from September of 2008 to last month, according to numbers released by the Gartner Group. IDC came up with a slightly higher number of 3.9 percent.

But sales of Apple Macs are up higher, to the tune of 6.8 percent, according to Gartner. IDC paints a rosier picture reporting Apple sales up 11.8 percent.

Is the Mac’s purported stronger security helping to spur sales? Did the celebration of the Mac’s 25th birthday back in January have anything to do with this? Are Mac loyalists simply more affluent or recession-resistant than other PC users? Even the analysts are baffled as to why.

But apparently, Apple plans to take full advantage of its resurgent status with a marketing campaign set to coincide with the official release of Winows 7. According to Apple Insider, the upcoming blitz will harp on the upgrade process from Windows XP to 7, while also portraying Macs as less prone to viruses.

It wouldn’t come as a surprise to anyone if Microsoft anticipated Apple’s attack. After all, back at the end of September, Microsoft gave a green light to small PC makers to start selling Windows 7 PCs on October 13. Hey, that was two days ago

Sony has unveiled the official specs for its super-slim Sony Vaio X series laptops, which the company was showing off last month at the IFA trade show in Berlin. The specs are pretty close to what was predicted, but there are a few surprises–including a lower-than-expected price. Sony also detailed its upcoming Vaio CW series laptops, which are less expensive than the X series.
The Sony Vaio X is sure to turn heads, with its carbon fiber body weighing in at 1.6 pounds. At only 0.55-inches thick, the new Vaio X is a little bit thinner than the recently announced Dell Latitude Z, and a lot lighter than most ultra-slim notebooks.
You will have to make some trade offs for the Vaio X’s sleek chassis, though, starting with its puny 11.1-inch LED backlit screen with 1366 x 768 resolution. By comparison, the MacBook Air has a 13.3-inch diagonal screen and the Dell Latitude Z sports a whopping 16-inch display. As for the processor, Sony will only say it’s a 2.0 GHz Intel chip. Early speculation said the Vaio X would come with an Atom processor, which would make the Vaio X’s processor the Atom Z550, but that is only speculation.
The Vaio X ships with Windows 7, 2GB DDR2 RAM, 64GB solid-state drive, multi-touch trackpad, Memory Stick Duo and SD card slots, GPS (works in the U.S. and Canada only), Ethernet, Wi-Fi (802.11n) and Bluetooth connectivity, 2 X USB 2.0 ports, and MOTION EYE Webcam. The Vaio X also comes with built-in 3G capability, which requires a Verizon wireless broadband subscription. Available colors include black and gold. The Vaio X’s body is made of carbon fiber, but the top case around the trackpad and keyboard is aluminum.
Sony Vaio X pricing starts at $1300, which is much lower than Sony’s claim last month that they Vaio X would be priced under $2000. The Vaio X will start shipping in November and can be found on Sonystyle.com right now.
CW Series
For something a little cheaper you can try the Sony Vaio CW on for size. This laptop runs Windows 7, and features an optional Blu-ray drive, 4GB of DDR3 RAM, 2.2GHz Core 2 Duo processor, NVIDIA GeForce dedicated graphics card, 320GB hard drive and HDMI out, which Sony says will allow you to playback high-definition content on your big screen TV. Available colors include fiery red, poppy pink, icy white, jet black and indigo purple.
The Vaio CW series starts at $780, but looking around on Sony’s Website, the cheapest version I could find of the model described above started at $800. The CW Series will be available at the end of this month, likely after the Windows 7 launch on October 22

Acer, the world’s third largest PC vendor, on Wednesday announced two of its most highly anticipated products with Google’s Android mobile operating system on board, the Liquid smartphone and an Aspire One netbook.

Acer Liquid is a touchscreen smartphone running Android version 1.6, formerly codenamed Donut and the latest upgrade to the software. Qualcomm’s Snapdragon chipset inside the smartphone provides processing power and other capabilities.

The smartphone also includes a camera that tags photos with location information from the built-in GPS receiver, so people know where and when they snapped a shot. Songs and videos can be played on the handheld. Liquid is designed for Internet browsing, and allows high speed Web access through HSPA (High Speed Packet Access) mobile networks.

The smartphone will use a new user interface, Acer said in a statement. Few other specific details were immediately available about Liquid.

Acer chose Android over other varieties of Linux because it has the best connectivity of any Linux OS built-in, said Jim Wong, president of global product operations at Acer during a news conference in London that was broadcast over the Internet.

Acer also offered a further glimpse at its Aspire One with Android netbook.

The device will run both Android and Microsoft Windows, and users will be able to switch between the two simply by clicking to switch OS, Acer said.

Android will give people access to the Web on start up, with just an 18 second boot-up time. The OS shuts down in 3 seconds, Acer said.

Other details about the new netbook, including when the device might go on sale and how much it would cost, were not immediately available from Acer. But the device showed up for pre-order on Amazon.com, where a full listing of its specifications was displayed.
The netbook is listed at US$349.99, comparable to other Aspire One’s with similar components. The Aspire One with Android has a 10.1-inch screen, an Intel Atom N280 microprocessor, 1GB of DDR2 (double data rate, second generation) DRAM and a 160GB hard-disk drive, as well as a 6-cell battery for long-lasting power. It can be booted in either Android or Windows XP Home, according to the sales data on Amazon.com.

Acer executives said the main reason the company decided to make the Aspire One with Android a dual-boot netbook was so people can use Microsoft’s Internet Explorer Web browser. Many Web sites say they are optimized for IE, said Wong.

The company has not yet started planning for new product development using Android next year. “We will continue to monitor Android development,” Wong said.

IE held a 65.7 percent share of the Web browser market as of September, according to Net Applications, which tracks the statistics. Firefox was second with a 23.8 percent market share and Apple’s Safari was third at 4.2 percent, followed by Google’s Chrome at 3.2 percent.

A survey by SurveyWare on Net Applications’ Web browser market share page, however, reported that 63.1 percent of respondents said Firefox was the best browser, followed by the Opera browser at 13.5 percent, IE at 12.1 percent and Safari at 11.3 percent

You can get a deeply discounted netbook from either AT&T or Verizon, as long as you’re willing to sign up for a two-year data plan; but no matter which service provider’s netbook deal you choose, the price will be about the same. We saw similar price parity when we conducted our cost-of-ownership study of popular smartphones.

We discovered the similarity in bottom-line prices after examining the two-year costs of ownership of various (subsidized) netbooks sold by Verizon and AT&T (Sprint and T-Mobile don’t yet offer such deals). The wireless broadband carriers began selling netbooks only this year, and they have adopted a pricing model similar to the one they use for selling cell phones and smartphones.

What’s on Sale?
Verizon offers either of two netbooks–the Gateway LT2016u or the HP Mini 1151NR (currently out of stock)–for $150. If you were to buy them elsewhere and without the data plan, the Gateway would cost around $300 and the HP would run about $400.

AT&T sells the Acer Aspire One, the Dell Mini 10, and the Lenovo IdeaPad S10 for $200 each. If you buy any of these netbooks elsewhere (sans data plan) you will pay about $300 for the Acer, $349 for the Dell, or $330 for the Lenovo.

Click on the thumbnail image to the left to view our chart containing a detailed comparison of the total cost of ownership for the five netbooks now being sold by U.S. wireless broadband service providers.

Not Unlimited Data

Unlike smartphone data plans, which typically promise to provide unlimited data for $30 per month, data-only 3G service for netbooks gives you much less for a lot more. Both AT&T and Verizon offer two tiers of data-only service: for $40 per month, you get 250MB (from Verizon) or 200MB (from AT&T) of data per month; for $60 per month, you get 5GB of data per month.

Exceed your monthly bandwidth cap, and you’ll pay extra: Verizon charges 10 cents per additional 1MB on the lower tier and 5 cents per additional 1MB on the higher tier; AT&T charges $10 per additional 100MB on the lower tier and a whopping 50 cents per additional 1MB on the higher tier.

The Cost of Speed
You pay for speed, too. Verizon’s EvDO Mobile Broadband network advertises download speeds of 0.6 to 1.4 megabits per second (mbps), and upload speeds of 0.5 to 0.8 mbps. AT&T’s DataConnect plans advertise slightly higher speeds: downloads at 0.7 to 1.7 mbps, and uploads at 0.5 to 1.2 mbps. Of course, customers’ actual results vary–check out our own 3G tests and compare for yourself.

The Specs
All of the netbooks mentioned here have approximately the same specs: a 1.6GHz Intel Atom processor, a 10-inch display, 1GB of memory, a 160GB hard drive, and Windows XP. This generation of netbooks already feels sluggish when put to work on any but the most barebones task; when netbooks equipped with multiple processors or Ion chipsets arrive, we may find the temptation to buy one a lot stronger.

The Bottom Line
Verizon’s and AT&T’s subsidized netbook deals have almost identical total costs. If you settled for the lower data cap (and avoided exceeding it), you’d spend around $1100 over the 24 months of your service contract, whether you went with Verizon or with AT&T. But a monthly data allotment of 250MB is barely enough to keep most people on top of their e-mail, so most users would be better served by the higher data cap, in which case they’d be spending about $1625 over two years with either wireless company (again assuming that they never exceeded the data maximum in any month). So if AT&T and Verizon 3G provide coverage of roughly equal quality in your area (a big assumption, obviously), AT&T gets the nod for offering slightly better netbooks. On the other hand, if you exceed your monthly allotment, AT&T will charge you significantly more for above-the-cap data service.

Consider the Alternative, or Not
If you’d rather not buy your netbook from a phone company, you can buy it at an unsubsidized price elsewhere. For instance, you can buy a Dell Mini 10 directly from Dell online for $349 (AT&T sells the same model for $150, with two-year service contract). But you still have to buy 3G service from some wireless carrier, and it’s cheaper to sign up for a two-year stretch–especially when you consider the cost of the USB modem you’ll have to buy to connect your netbook to the 3G goodness.

If you’re hell-bent on avoiding a long-term contract, you can either purchase a netbook at its “no-commitment price” ($600 from Verizon, $450 from AT&T) or buy your own netbook elsewhere and buy a USB modem from Verizon (prices range from $50 to $200) or AT&T ($120). Depending on how much you spend on the netbook, this option would put you over the $2000 mark for two years of ownership.

Clearly, buying through a wireless carrier is no way to save money on a netbook. But the experience of using a netbook mainly involves the stuff it can access by connecting to the Web via fast wireless Internet service; the netbook itself is really just a lightweight endpoint. If you think about it that way, the sticker shock you get from the two-year price of a subsidized netbooks might not be so shocking

Acer introduced its first laptop with a multitouch display, which the company said is an intuitive way to make computing fun and easy.
The Acer Aspire 5738PB includes a 15.6-inch screen on which two fingers can be placed to manipulate images, write notes or zoom into maps. Multitouch input brings a new dimension to laptop functionality as it offers a natural way for users to interact with PCs, Acer said in a statement.

Acer joins a bunch of PC makers offering multitouch laptops, including Hewlett-Packard and Dell. Lenovo recently introduced a multitouch laptop with a four-finger input capability. Acer will start selling the laptop in the U.S. on Oct. 22, the same day Microsoft releases its next-generation Windows 7 OS. The laptop will come preloaded with Windows 7, which has native touchscreen support.

The US$799 Acer Aspire 5738PB laptop comes with Intel’s Core 2 Duo T6600 processor running at 2.2GHz. It also includes ATI Radeon HD4570 graphics, 4GB of memory and a 320GB hard drive. It weighs about 6.16 pounds (2.79 kilograms). The company wasn’t immediately available for comment on battery life.

Acer also expanded its Aspire Timeline series of laptops with new models that are powered by Intel’s low-voltage dual-core processors to help extend battery life. The laptops come with screen sizes ranging from 11.6 inches to 15.6 inches and weigh between 3.5 pounds to 5.3 pounds.

The Acer Aspire Timeline AS1810 offers an eight-hour battery life and is the thinnest and lightest of the new laptops. A sample configuration with a 1.3GHz Intel Core 2 Duo processor, 4GB of memory and 320GB of hard drive storage was listed at $599

You can get a deeply discounted netbook from either AT&T or Verizon, as long as you’re willing to sign up for a two-year data plan; but no matter which service provider’s netbook deal you choose, the price will be about the same. We saw similar price parity when we conducted our cost-of-ownership study of popular smartphones.

We discovered the similarity in bottom-line prices after examining the two-year costs of ownership of various (subsidized) netbooks sold by Verizon and AT&T (Sprint and T-Mobile don’t yet offer such deals). The wireless broadband carriers began selling netbooks only this year, and they have adopted a pricing model similar to the one they use for selling cell phones and smartphones.

What’s on Sale?
Verizon offers either of two netbooks–the Gateway LT2016u or the HP Mini 1151NR (currently out of stock)–for $150. If you were to buy them elsewhere and without the data plan, the Gateway would cost around $300 and the HP would run about $400.

AT&T sells the Acer Aspire One, the Dell Mini 10, and the Lenovo IdeaPad S10 for $200 each. If you buy any of these netbooks elsewhere (sans data plan) you will pay about $300 for the Acer, $349 for the Dell, or $330 for the Lenovo.

Click on the thumbnail image to the left to view our chart containing a detailed comparison of the total cost of ownership for the five netbooks now being sold by U.S. wireless broadband service providers.

Not Unlimited Data

Unlike smartphone data plans, which typically promise to provide unlimited data for $30 per month, data-only 3G service for netbooks gives you much less for a lot more. Both AT&T and Verizon offer two tiers of data-only service: for $40 per month, you get 250MB (from Verizon) or 200MB (from AT&T) of data per month; for $60 per month, you get 5GB of data per month.

Exceed your monthly bandwidth cap, and you’ll pay extra: Verizon charges 10 cents per additional 1MB on the lower tier and 5 cents per additional 1MB on the higher tier; AT&T charges $10 per additional 100MB on the lower tier and a whopping 50 cents per additional 1MB on the higher tier.

The Cost of Speed
You pay for speed, too. Verizon’s EvDO Mobile Broadband network advertises download speeds of 0.6 to 1.4 megabits per second (mbps), and upload speeds of 0.5 to 0.8 mbps. AT&T’s DataConnect plans advertise slightly higher speeds: downloads at 0.7 to 1.7 mbps, and uploads at 0.5 to 1.2 mbps. Of course, customers’ actual results vary–check out our own 3G tests and compare for yourself.

The Specs
All of the netbooks mentioned here have approximately the same specs: a 1.6GHz Intel Atom processor, a 10-inch display, 1GB of memory, a 160GB hard drive, and Windows XP. This generation of netbooks already feels sluggish when put to work on any but the most barebones task; when netbooks equipped with multiple processors or Ion chipsets arrive, we may find the temptation to buy one a lot stronger.

The Bottom Line
Verizon’s and AT&T’s subsidized netbook deals have almost identical total costs. If you settled for the lower data cap (and avoided exceeding it), you’d spend around $1100 over the 24 months of your service contract, whether you went with Verizon or with AT&T. But a monthly data allotment of 250MB is barely enough to keep most people on top of their e-mail, so most users would be better served by the higher data cap, in which case they’d be spending about $1625 over two years with either wireless company (again assuming that they never exceeded the data maximum in any month). So if AT&T and Verizon 3G provide coverage of roughly equal quality in your area (a big assumption, obviously), AT&T gets the nod for offering slightly better netbooks. On the other hand, if you exceed your monthly allotment, AT&T will charge you significantly more for above-the-cap data service.

Consider the Alternative, or Not
If you’d rather not buy your netbook from a phone company, you can buy it at an unsubsidized price elsewhere. For instance, you can buy a Dell Mini 10 directly from Dell online for $349 (AT&T sells the same model for $150, with two-year service contract). But you still have to buy 3G service from some wireless carrier, and it’s cheaper to sign up for a two-year stretch–especially when you consider the cost of the USB modem you’ll have to buy to connect your netbook to the 3G goodness.

If you’re hell-bent on avoiding a long-term contract, you can either purchase a netbook at its “no-commitment price” ($600 from Verizon, $450 from AT&T) or buy your own netbook elsewhere and buy a USB modem from Verizon (prices range from $50 to $200) or AT&T ($120). Depending on how much you spend on the netbook, this option would put you over the $2000 mark for two years of ownership.

Clearly, buying through a wireless carrier is no way to save money on a netbook. But the experience of using a netbook mainly involves the stuff it can access by connecting to the Web via fast wireless Internet service; the netbook itself is really just a lightweight endpoint. If you think about it that way, the sticker shock you get from the two-year price of a subsidized netbooks might not be so shocking