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RS-232↔RS-422 INTERFACE CONVERTERS
1. Specifications
Cable Required — Between Converters: 4-wire (2-pair)
unconditioned twisted-pair cable
Compliance — CE; FCC Part 15 Subpart J Class A,
IC Class/classe A
Interfaces — To devices: EIA/TIA RS-232C:
IC470A, IC471A, and IC472A models:
Original pinning on DB25;
IC473A, IC630A, and IC631A models:
Pinned according to TIA-574 on DB9;
To line: EIA/TIA RS-422 or (IC471 and
IC472 models only) RS-530 (transmit- and
receive-data signals only)
Protocol — Asynchronous
Data Format — Transparent to data format
Flow Control — Transparent to software flow control
(X-ON/X-OFF, etc.); loops back RS-232
hardware flow-control signals (RTS, CTS,
DTR, DSR, and CD)
Operation — 4-wire; transparent to half- or full-duplex
Data Rate — Transparent to data rates up to 19,200 bps
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