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The Importance of RS 232 and Other Serial Converters

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The Importance of RS 232 and Other Serial Converters Powered By Docstoc
					This article is certainly not for hard-central techies seeking more detailed information
about the often-arcane word of USB, RS232, RS485 and RS422 converters. Instead, it
is tailored toward the more informal computer user who might need those interface
protocols at work and wonders what, specifically they are, and cooking techniques. So,
let's talk about the actual serial interface in general, the reason why serial connections
continue to be crucial, and why reliable converters are often crucial.

Nowadays, when we connect some thing to a computer, that likely uses USB, which
in turn stands for Universal Serial Bus. Most external peripherals :- such as data,
optical drives, mice, video cameras, etc. - connect to personal computers via one of
the above methods. Most, but not just about all.

That's because, for a number of reasons, there is nonetheless a large number of
software and peripherals that use serial communication. It is a basic, reliable, and
time--tested means of electronic digital communication, and sort of a typical
denominator that can be used in between just about any a couple of pieces of
electronic equipment. In its most basic, RS232 uses different voltage levels with
respect to soil to communicate point-to-point with slow speeds over short distances.
RS422 uses garbled pairs and communicates alerts faster and over lengthier distances
via negative and also positive voltages. RS485, finally, works just like RS422, but
uses the addressing system (a bit like Ethernet) and therefore could communicate with
multiple products. Because of this, most modern laptops don't have a serial connector,
and even on desktop computers they are becoming less common. And even devices
who have "legacy support,Inch i.e. a being unfaithful-pin serial connection, generally
only provide RS232 connectivity.

This is where method converters and adapters receive play. These converters can be
found in various sizes and adjustments and convert between RS-232, RS:422, RS-485,
and TTL. There may also be a necessity to convert between the electro-mechanical
signals generated by personal computers and fiber optic transmitting methods used for
large-speed/high bandwidth connections. Often it's really a matter of getting a good
adapter to convert between your computer's USB port for you to whatever serial
protocol is necessary.

More Info at the links below:

rs485 to usb
rs232 to ethernet

				
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posted:2/12/2011
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