Black Box IC821A
Contents
1. lt gt BLACK BOX NETWORK SERVICES 2010 All rights reserved Black Box Corporation FEATURES Converts RS 232 to 4 wire RS 422 or to 2 or 4 wire RS 485 Bidirectional data conversion Select RS 485 2 wire half duplex or RS 485 4 wire full duplex operation Optically isolated circuits protect it from overvoltage damage caused by ground loops surges and spikes RS 422 operation with transmit and receive always enabled Set operating mode with four switches Automatic RS 485 driver control so it works without any special programming for handshaking signals Also enables transmitter from RS 232 TD signal and receiver when not transmitting Built in bridging switches for 2 or 4 wire operation with no external jumpers to set Converts using either port power or power from an external 120 VAC 12 VDC power supply PS1003 ordered separately No external power is required if two RS 232 output handshake lines are available w gt w gt v gt v gt v gt vw gt vw gt w gt vw TECH SPECS Interface RS 232 4 wire RS 422 or 2 or 4 wire RS 485 Connectors 1 DB9 female 1 5 wire connector for TD A TD B RD A RD B and GND 1 2 wire connector for Power and GND Indicators 2 LEDs 1 TD 1 RD Power From the interface or from optional 120 VAC 12 VDC wallmount power supply Size 1 7 Hx 3 9 W x 0 9 D 4 3 x 9 8 x 2 3 cm W2. eight lt 0 1 Ib lt 0 1 kg Universal RS 232 to RS 422 RS 485 Converter Opto lsolated IC821A 120 VAC 12 VDC Wallmount Power Supply PS1003 04 13 2010 724 746 5500 blackbox com lt BLACK BOX NETWORK SERVICES 26796
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