B&B Electronics - 422LP25N - 2 Chanel RS-232 - RS-422 Port Powered Converter 4000 Ft. Extender

		422LP25N 2 Channel RS-232 - RS-422 Port Powered Converter 4000 Ft. Extender Looking to extend the communications range of 2 computers by up to 4000 feet ? Do you need your computer equipment to communicate with equipment that will only accept a RS-422 signal ? Well then, we have an excellent solution.   This RS-232 to RS-422 converter converts unbalanced RS-232 signals to balanced RS-422 signals. Power is derived from the transmit data line (pin 2) and the handshake control lines (pins 4, 5, 6, 8, and 20). The converter can derive power from these lines when they are in the positive or negative voltage state. This permits the converter to be used in applications without any regard to software control of the handshake lines. If no handshake lines are available and all power must be derived from the transmit data line, the converter can drive limited cable lengths. A guide for this condition would be to drive only several hundred feet of transmission line and not to terminate the transmission line with a resistor of less than 1000 Ohms. When more handshake lines are available longer lengths of cable can be driven.  This converter has been tested at 115.2k baud with 4000 feet of cable. For applications where handshake lines are not available and long cable runs are involved, an external power supply can be connected to the female connector on the RS-422 side of the converter on pins 12 (Gnd) and 25 (+12).  If you do not have any RS-422 equipment but want to communicate between 2 computers, you can simply put 1 adapter on each of the computers and run a cable up to 4000 feet between them. Features: Slimline package DB-25 Male on RS-232 End DB-25 Female on RS-422 End Plug and Play device connects instantly No Software to install These converters are ALL New Some of them are in the factory zip lock package and some are not.   Need More than 1 or 2 ? Email us and we will give you quantity pricing. Need a Gender Change? Look at our item number: 422LP25R - this device has opposite genders on both ends. This is the only difference between the 422LP25R & 422LP25N.
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On Sep-25-09 at 14:16:54 PDT, seller added the following information: