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B & B Electronics RS 232 to RS 422 Converter 422LPTB, US $25.99 – Picture 0
B & B Electronics RS 232 to RS 422 Converter 422LPTB, US $25.99 – Picture 0

B & B Electronics Rs 232 To Rs 422 Converter 422lptb

US $25.99

  • New Haven, Michigan, United States
  • Jan 29th
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Port Powered RS-232 to RS-422 Converter CE Model 422LP9TB The 422LP9TB is a port-powered two-channel RS-232 to RS-422 converter. It converts TD and RD RS-232 lines to balanced RS-422 signals. The unit can be powered from the RS-232 handshake lines, DTR and RTS. If port powering the unit, one of these handshake lines must be asserted (high) in order to power the unit (See Table 1). The RS-422 driver is enabled when RTS is asserted. Therefore, RTS must be asserted in order to transmit data. The RS-422 receiver is always enabled. If DTR is always asserted and the RTS is used to control the driver, the 422LP9TB can be used as an RS-232 to RS-485 4-wire converter. To insure reception, it is recommended that DTR is asserted (or power the unit externally). In order to maximize the amount of power available to the RS-422 driver, the RS-232 handshake lines are not looped back (tied together). As a result the following handshake lines will appear as disasserted (low): CTS, DCD, and DSR. Care should be taken to insure that any software being used doesn’t require any of these handshake lines be asserted. If existing software requires any of the handshake lines to be asserted, you can loop back the required handshake lines in your cable
Condition:
New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections. ...
Brand B&B Electronics
Model 422LP9TB

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