14 Wired Connection Options
Access qr code 2d barcode with .net
use .net framework qr code printing toadd qr barcode in .net
Figure 14-9: One of the most popular brands, the Linksys Instant PowerLine Etherfast 10/100 Bridge.
.net Framework qr codes recognizer on .net
Using Barcode recognizer for .net framework Control to read, scan read, scan image in .net framework applications.
All the early HomePlug units looked more or less like the Linksys in Figure 14-9. Some are plastic, like the Linksys, and some are metal. But second versions got small as the market increased, manufacturing volume picked up, and new components shrank and designers made custom chips that incorporated the functions of several earlier chips, reducing the size of the electronics. The results of these advances mean smaller units provide more exible mounting options. One of the later entrants into the market, Netgear, now sells a very sleek and small wall-mounted HomePlug unit. Take a look at the wall-wart XE102 Wall-Plugged Ethernet Bridge in Figure 14-10.
Barcode barcode library in .net
use .net vs 2010 crystal bar code development toadd barcode on .net
Figure 14-10: The new look of second generation HomePlug devices, this one from Netgear.
Barcode barcode library in .net
using .net framework todraw bar code for asp.net web,windows application
382 Part IV Linking Your Network Devices
Draw qr code jis x 0510 with visual c#.net
using barcode integration for .net vs 2010 control to generate, create quick response code image in .net vs 2010 applications.
Crowded of ce oors behind desks, where cables come from all directions and emulate spaghetti, will have one less device to entangle. Sure you must run a cable to this, but at least the cable won t terminate somewhere on the oor into a box half-hidden by other cables. You do have to give up a real wall socket, sometimes a precious commodity, but plug strips are cheap even if you do the right thing and buy one with surge protection. Plug that into the other wall socket and you re in business again. Neighbors, at least those within about 900 feet and within the same electrical wiring from the distribution transformer, will see your signals. Most HomePlug devices now offer 56-bit encryption. This level won t stop determined hackers, but will stop your neighbors from reading the shared les on your network. That assumes, however, that you have turned the encryption on by putting the same password in all your connected HomePlug units. And I always recommend good passwords for all shared network resources, HomePlug passwords or not.
Control qr code iso/iec18004 image in .net
using web pages togenerate qrcode for asp.net web,windows application
HomePlug and Ethernet
Control qr code jis x 0510 size in vb
to build qr code 2d barcode and qr code data, size, image with visual basic.net barcode sdk
HomePlug devices aspire to be invisible, if not physically, at least electronically. When your computer connects to a HomePlug unit instead of a wiring hub, router, or switch, your computer should never know the difference. For the most part, HomePlug works invisibly. The primary network design shown by most HomePlug vendors is one device at your router by your cable/DSL modem, and a second device at a convenient location for another computer, such as a child s room or the den. In fact, some early products only worked with two HomePlug devices on the network. Now you can have up to 16 HomePlug devices in one network. Notice that in Figures 14-9 and 14-10, both products called themselves bridges. That s in keeping with the idea that the HomePlug device bridges your Ethernet network over the electrical wiring and delivers your packets back to your Ethernet network as if nothing happened. You know, just like a bridge over a river connects the road on either side. Sometimes electronic nomenclature steals directly from the real world, and this is one of those times. Interference does cause problems to HomePlug devices. Every time an electrical motor starts up, it inserts an enormous amount of noise on the electrical line. Ever turned on a vacuum and thought the lights dimmed for a second They did, because the vacuum noise on the line disrupted the electrical ow at startup and the new load of the vacuum motor dragged down the voltage as well. HomePlug uses spread spectrum frequencies to handle interference, just like wireless Ethernet in the next chapter. When something new adds to the noise on the electrical circuits, the HomePlug devices hop around the frequencies looking for clear frequencies to use. That search and hop disrupts data transmission speed.
Draw linear for .net
generate, create linear 1d barcode none on .net projects
14 Wired Connection Options
Bar Code barcode library in .net
using barcode writer for visual studio .net crystal control to generate, create barcode image in visual studio .net crystal applications.
A Web site with many HomePlug products gathered together for comparison and online sale is www.HomePlugs.net. Fewer available frequencies means slower transmissions. HomePlug is rate adaptive, another term for the process of looking around to nd new transmission frequencies when one disappears because of interference. But one of the ways to nd clear space on the circuit is to lower the data transmission speed.
Matrix Barcode barcode library with .net
generate, create matrix barcode none for .net projects
Develop ean-13 in .net
using .net crystal toencode ean / ucc - 13 on asp.net web,windows application
Add upc barcodes in excel
using barcode generation for excel control to generate, create universal product code version a image in excel applications.
Access ansi/aim code 39 for .net c#
generate, create 39 barcode none on c# projects
Barcode encoding for .net
using .net winforms togenerate barcode with asp.net web,windows application
QR Code ISO/IEC18004 implement with .net
using rdlc reports net todeploy qr bidimensional barcode on asp.net web,windows application