10
RS-232↔RS-422 INTERFACE CONVERTERS
switch you can set to complement your devices. (The
DB9 models don’t have this switch—they’re always
DCE—so you’ll need a DB9 null-modem cable to
connect them to a modem or a similar device.)
Converters are available with any of several RS-422 and
RS-530 interface options. Of the models that carry
RS-422 only, IC470A and IC473A models carry it on
5-position terminal blocks (strain relief included);
IC630A models carry it on RJ-12 (“6-wire RJ-11”) jacks;
and IC631A models carry it on RJ-45 jacks. The IC471A
and IC472A models carry either RS-422 or the transmit-
and receive-data leads of RS-530 on DB25 female and
DB25 male connectors respectively.
2.2 Features and Benefits
• Bidirectionally convert RS-232 signals to balanced
RS-422 signals or RS-530 transmit- and receive-data
signals.
• IC470A, IC471A, and IC472A models can be set as
DTE or DCE on RS-232 side.
• Passes software flow control, loops back RS-232
hardware flow-control signals.
To Next Page