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Topic: Rs422

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	ARC's RS422 Tutorial & info on converters
		RS422 (differential) was designed for greater distances and higher Baud rates than RS232.
		RS422 is also specified for multi-drop (party-line) applications where only one driver is connected to, and transmits on, a "bus" of up to 10 receivers.
		These networks are often used in a half-duplex mode, where a single master in a system sends a command to one of several "slave" devices on a network.
	www.arcelect.com /rs422.htm (1219 words)

	RS422 Converters (Site not responding. Last check: 2007-10-18)
		RS422 Converters are devices which enable connectivity between pieces of equipment which operate different communications protocols.
		As an example, RS232 devices may be connected to RS422 devices using protocol converters.
		For example, an aged shop floor machine, which operates to RS422 may need to be connected to a new PC which operate to RS232.
	www.bb-europe.com /rs422_converters_av.html (191 words)

	RS422-V.11-X.27 (Site not responding. Last check: 2007-10-18)
		RS422 is a balanced serial interface for the transmission of digital data.
		The advantage of a balanced signal is the greater immunity to noise.
		The EIA describes RS422 as a DTE to DCE interface for point-to-point connections.
	ckp.made-it.com /rs422.html (184 words)

	Eurotherm \| Knowledge \| RS232 / RS422 / RS485 (Site not responding. Last check: 2007-10-18)
		Although RS485 is commonly referred to as a ‘two wire’ connection, a separate cable is often provided for linking the circuit commons.
		Strictly speaking, RS422 is a standard permitting ‘point to point’ connection between two communicating instruments using a full duplex, differential signal on two pairs of wires.
		In principle, therefore, an RS422 link only allows a single instrument to be connected to a PC.
	www.eurotherm.co.uk /uk/eng/Knowledge/Communications/RS232.htm (339 words)

	The educational encyclopedia, rs232-485 (Site not responding. Last check: 2007-10-18)
		RS232, RS422 and RS485 RS 232, RS 422 and RS 485, transfer protocols
		RS422 RS485 application note the purpose of this application note is to describe the main elements of an RS422 and RS485 system
		RS-485 Interface The RS-485 is the recommend standard by the Electronic Industries Association (EIA) that specifies the electrical characteristics of generators and receivers that may be employed for the interchange of binary signals in multipoint interconnection of digital equipments,...
	users.telenet.be /educypedia/computer/rs232485.htm (516 words)

	EIA-422/EIA-485 Bus Interface Description, RS422, RS485
		Circuit grounding is not shown is in either of the RS422 or RS485 circuits.
		Cabling is not specified in RS422 or RS485, but a rule of thumb is listed above for 24 AWG twisted pair copper wire with 16pF/ft. Cabling standards are listed lower down the page.
		RS422 pinout is not defined in the standard, any pinout table found for RS422 is non-standard.
	www.interfacebus.com /Design_Connector_RS422.html (1257 words)

	visual basic vb C# serial communications: rs232, rs422, rs485 training tutorials example source code
		RS422 and RS485 use a balanced line approach that eliminates many problems with RS232.
		The problems with RS422 and RS485 is that the set-up is more difficult: you have to use more expensive cable (for proper impedance and capacitance), properly terminate the ends of the cables, set addresses, etc. But the advantages are longer cable lengths, higher baud rates, and multiple devices share the same communication network.
		Most of the changes for RS422 and RS485 are in the hardware and cabling.
	www.htservices.com /Tools/VBandC/SerialCommunications.htm (4097 words)

	9 pin rs 422 controller component OCX, video (Site not responding. Last check: 2007-10-18)
		Direct connection from PC RS232 to VTR RS422 interface, cable must be 4 meters or less.
		For a true RS422 connection, you can use any adapter RS232 port on the PC and provides an RS422 connection on the other side (option 2).
		To connect the adaptor to the VTR, use a standard RS422 cable.
	www.rs422.com.ar (1066 words)

	RS232 and RS422 (Site not responding. Last check: 2007-10-18)
		The main difference is that RS232 is an unbalanced system, with two wires for the data (one to send, and one to return), whereas RS422 is balanced, with four wires (a 'positive' and 'negative' send, and a 'positive' and 'negative' return).
		Please note, for all these solutions, that the computer industry standard wiring convention for 9-pin RS422 ports is not the same as the broadcast industry standard.
		Many of the commercially available RS232 to RS422 converters are powered from the RS232 port on the computer, which generally do not have the guts to cope with powering a converter and a high current line.
	www.takelog.com /Technical/rs232422.htm (1133 words)

	Antona RS232 to RS422/RS485 Adapters and Converters
		The adapter plugs into the serial port of the PC and for most applications, is powered from the serial port (like a mouse interface).
		The ANC-6090S/D is an internally mountable powered version RS232/RS422 adapter which provides 1 or 2 RS422 ports from the PCs RS232 ports.
		The adapter is perfect for permanent RS422 installations where a dedicated RS422 interface and clean-looking placement is desired.
	www.antona.com /dta6000.htm (392 words)

	RS422 RS232 RS485 Wiring Hub, 16 Port - Telebyte Model 290
		RS422 RS232 RS485 Wiring Hub, 16 Port - Telebyte Model 290
		Great prices on RS422 RS232 RS485 Wiring Hub, 16 Port, full duplex, half duplex, expand to 496 nodes, surge protection
		The outer pair of contacts in the RJ-11 modular connector represents the bi-directional pair for RS-485 or the receive pair for RS-422.
	www.telebytedatacom.com /catalog/products/290.htm (360 words)

	Serial Interfaces (RS232 and RS485) - Products and Services - National Instruments
		National Instruments serial interface boards for PCI are asynchronous serial interfaces for communicating with RS232, RS485, and RS422 serial devices.
		National Instruments serial interface boards for PXI are asynchronous serial interfaces for communicating with RS232, RS485, and RS422 serial devices.
		National Instruments serial interface boards for ISA and PCI are asynchronous serial interfaces for communicating with RS232, RS485, and RS422 serial devices.
	www.ni.com /serial (295 words)

	Simple RS422 Converter (Site not responding. Last check: 2007-10-18)
		I got the idea to provide the RS422 for the Minilogger and use my desktop to retrieve data instead.
		The second board is the converter that converts RS422 to RS232 for PC's COM port.
		As shown in the schematic, the 75179 first converts RS422 to TTL level, so we need to change the level to RS232 again, we can use MAX232 or DS275.
	chaokhun.kmitl.ac.th /~kswichit/Rs422/Rs422.html (518 words)

	The Answer Guy 32: High Speed Serial (RS422) under Linux
		Hi I want to use RS422 card under linux.
		You might also search the Equinox, Digi, Specialix, and other web pages for manufacturers of specialized and multi-port serial hardware to see if they have something that suits your needs.
		Presumably there is some RS422 support built into the Kernel --- at least in the PPC (PowerPC) port.
	linuxgazette.net /issue32/tag_rs422.html (490 words)

	PC RS422 Interface (Site not responding. Last check: 2007-10-18)
		This interface circuit provides electrically isolated RS422 communication interface to the PC serial port the isolation circuit protect the PC from direct connection to hazardous voltages.
		Connector K1 is linked to the serial port of the PC, power to the PC side of the circuit is derived from the signal lines DTR and RTS.
		Figure 2 and 3 shows the component layout of the RS422 single sided pcb and the track patterns respectively.
	chaokhun.kmitl.ac.th /~kswichit/Pc_Rs422_web/PC_Rs422.html (273 words)

	Roalan Short Form Catalogue
		Serial RS422 and RS485 boards for 5V and 3.3V PCI and PCI-X 64 bit servers.
		USB to Serial 1 to 16 ports RS232, RS422 and RS485 converters.
		Ethernet LAN 1 to 8 Port RS232 RS422 And RS485 adapter
	www.roalan.com (447 words)

	Esis: Converters: RS232/RS422/RS485/ I-Loop/ Fibre Optic/ Radio
		RS232 to RS422/ RS485 I-Loop Fibre Optic Ethernet
		RS422 has separate dedicated pairs of wires for each direction of transmission between only two devices up to 1.2km apart.
		This avoids ground loops which can cause data errors if the ground potentials are different at each end of the long line, and gives more tolerance to electrical interference..
	www.esis.com.au /Converters/Converters.htm (4165 words)

	RS-232, RS-422 and Parallel Keyboards from EKI
		When mounted all EKI industrial rs232 ad rs422 keyboards are NEMA 4, or EKI has models that are NEMA 4 when used standalone on factory floors or wash down areas.
		EKI also makes industrial rs232 and rs422 keyboards that fit into 1U drawers, 19" racks and on machine panels so they are a natural for embedded systems.
		EKI industrial rs232, rs422 and Parallel Output keyboards when made custom to fit a process or with a standard key pattern make the complete Industrial Automation and Control Interface with key names and colors that fit the process and not the keyboard.
	www.electronickeyboards.com /rs232-keyboard.html (1435 words)

	Antona Corporation Home Page
		Our ANC-6090 (pictured) converts RS232 level signals to RS422 differential signals for noise immune communication at 115 Kbaud at distances up to 4000 feet.
		Our price for these RS232/RS422 converters, including a comprehensive User's Manual, is hard to beat at US$49.00 each delivered from stock.
		Our ANC-6090S/D is an internally mountable powered version RS232-RS422/RS485 adapter which provides one or two RS422 ports from the PC's RS232 ports.
	www.rs422.com (326 words)

	eBay - rs422 rs232, Desktop PC Components, Networking items on eBay.com (Site not responding. Last check: 2007-10-18)
		EQUINOX LDA II CONVRT RS232 TO RS422 DB25M
		ROCKETPORT UNIV PCI 32PT 32 RS232 OR RS422
		ROCKETPORT UNIV PCI 16PT 16 RS232 OR RS422
	search-desc.ebay.com /search/search.dll?query=rs422+rs232&newu=1&krd=1 (330 words)

	RS232 to RS422 Converter
		All Integrity Instruments products are guaranteed against defective workmanship and components for the life of the unit.
		Integrity Instruments XP422-25A converter changes your RS232 data to RS422 data for point to point transmission, for distances up to 4,000 feet.
		Designed for today’s demanding hardware and software systems these state of the art converters feature the latest design technology featuring PSMT and simple connection scheme, for easy to use hassle free operation.
	www.rs-485.com /converteritemw.asp?record=35 (154 words)

	RS232 to RS422 Optical Isolated Converter
		RS232 to RS422 optically isolated converter with DB9 connector and DTE/DCE selection feature.
		Integrity Instruments XP422-9I converter changes your RS232 data to RS422 data for point to point transmission, for distances up to 4,000 feet.
		No big option tree to select from, all units come standard with 3 LED’s to help you monitor your system, and —40°C to +85°C operating temperature range.
	www.rs-485.com /converteritemw.asp?record=51 (206 words)

	ACKSYS - Produits
		Case RS422/ RS485 isolated 3 KVeff: SUB D9 for each line.
		Case RS422/ RS485 isolated 3 KVeff: SUB D9 for each channel.
		Modular case with mixed interface (RS232, RS422, RS485, fiber optic cable).
	www.acksys.fr /us/produits/cc_unx.htm (535 words)

	Barcode and Magnetic Stripe Readers (Site not responding. Last check: 2007-10-18)
		RS422 and RS485 versions are networkable for programming access.
		RS422 and RS485 versions are network-able for programming access.
		These readers are available in many different industry standard interfaces, are programmable, and are available with a variety of options, including LED indicators, alphanumeric displays, relays, and door status inputs.
	www.highpowersecurity.com /bar_mag.htm (1720 words)

	RS232/RS422 Converter
		The RS232/RS422 converter converts RS232 signals to RS422 signals generally used for long distance serial communications.
		RS232 to RS422 / RS422 to RS232 conversion.
		Send mail to webmaster@wcscnet.com with questions or comments about this web site.
	www.wcscnet.com /Hdw232T422DB25.htm (76 words)

	Serial Communication Library, Tools, & Multiport Cards RS232 / RS485 / RS422 (C, C++, VB. .Net Support)
		In addition to the serial communication library we have a repertoire that includes specialized Windows (XP, 2000, 2003, NT) drivers and Windows (98, Me, 95) drivers that support the RS232, RS422, Multidrop Protocol (RS485), and the Nine Bit Protocol.
		They provide the ability to timestamp each byte to microsecond resolution, store line status register (LSR) and modem status register (MSR) for each acquired byte, very fast RTS signal control, and much more.
		We provide RS232, RS485, and RS422 versions of these multiport cards.
	www.wcscnet.com (348 words)

	RS422 Opto Isolation Module - Telebyte Model 281 (Site not responding. Last check: 2007-10-18)
		RS422 Opto Isolation Module - Telebyte Model 281
		Great prices on RS422 opto isolation module, full duplex, bidirectional, rs 422 opto isolator
		The Model 281 provides two, full duplex, optically isolated signal paths for data, TD and RD, and a control signal pair that can support RTS/CTS or DTR/DCD.
	www.telebyteusa.com /catalog/products/281.htm (181 words)

	RS232, RS422 & RS485 usb to RS232 - Industrial computers, data acquisition and communication - Amplicon Liveline
		RS232, RS422 & RS485 usb to RS232 - Industrial computers, data acquisition and communication - Amplicon Liveline
		Amplicon have been manufacturing & distributing high quality serial (RS232, RS422, RS485) products for over 20 years.
		If you do not see the exact product you require here, or need help specifying the right solution, please call one of our technical sales engineers on 01273 608 331.
	www.amplicon.co.uk /dr-prod2.cfm/secid/4/subsecid/10032.htm (257 words)

	TCDetective Pro Timecode Break Analyzer
		DV or RS422, port, sensitivity and scan speed), just press the Detect button and TCDetective Pro will do the rest.
		The deck or camera cues to the beginning of the tape and plays through at the selected speed.
		To use TCDetective in Serial mode, you must have a RS422-232 serial converter connected between the computer Com port and the VTR remote port.
	www.imagineproducts.com /tcdetective.htm (496 words)

	DNF Controls
		The Analyst RS422/RS232 Tester allows users to isolate, identify, and resolve RS422 and RS232 interface problems quickly and easily.
		Whether testing cable runs between floors or between buildings, verifying RS422 and RS232 signal paths, or chasing down an RS422-to-RS232 adapter problem, The Analyst provides the features required to resolve the problem quickly.
		The system is comprised of a device controller that interfaces with GPI, RS232, RS422, and Ethernet devices, and a control panel that provides the user with a familiar, tactile control surface with functions keys, an easy-to- read LCD display, a jog/shuttle wheel with electro-mechanical detents, and a T-bar.
	www.dnfcontrols.com (857 words)

	9 pin RS422 VCR Timing software, VCR Sync
		Software for controlling RS422 compatible VCRs based on time.
		Works with all formats RS422 compatible VCRs for video and audio.
		Here shows when the events are taking place, through the time, the VCRs can also be controlled manually from the bottom panel.
	www.rs422.com.ar /vcrtiming (489 words)

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