CR-2 Character Repeater / RS-232 Line Driver / RS-485 Converter
The CR-2 is an industrial rated asynchronous line driver, interface converter, and character repeater.
The line driver mode is used to connect RS-232 interfaces up to 5,000 feet apart using a 4-wire link.
It regenerates asynchronous data to corrrect oversampling errors, or drive up to 5,000 feet of copper wire. The CR-2 uses UARTs in addition to RS232 and RS485 2-wire or 4-wire drivers and receivers (The CR-2 is RS422 compatible using the RS485 4-wire setting). The CR-2 regenerates both the electrical signals and the characters.
Regenerating characters is useful when back to back links that user over-sampling are tied together. For example, over sampling 19200 bps asynchronous data over a 56 kbps synchronous circuit will shorten or lengthen each 1 or 0 by up to 34%. Receiving devices will typically correctly recover the data with 34% bit length distortion. However, back to back over sampled links can add another 34% bit distortion, for a total of 68%. A bit distortion of 68% results in bit errors.
The CR-2 removes async bit distortion by regenerating the characters. Each of the bits of a character coming out of an asynchronous UART have the same time duration.
The CR-2 is shipped with both interfaces set to RS232. The user can option the CR-2 for RS422/485 4-wire operation or for RS485 2-wire operation by using the configuration menus through the console port, telnet, or web-browser configuration management features.
Questions? Phone us toll free at 800-432-2638
Due to the nature of this product,
|Item Number||Description||Price||Buy Now!|
|CR-2||Character Repeater / Line Driver(5-30VDC and 120 VAC power supply)||$249||Qty:|
|9501033||Optional 36-72 VDC Input Power Supply||$ 75||Qty:|
|9501081||Optional 125 VDC Input Power Supply||$ 125||Qty:|
|9902090||Optional DIN rail mounting clips||$ 5||Qty:|
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