Introduction
6 User’s Manual - SM202T/SMV23 Modem
Features
The IG202T/V23 modem is specifically designed for harsh environments typically associated
in utility substations and industrial facilities. Though functionally similar to commercial
modems, the IG202T/V23 provides the following unique features that make it well suited for
utility and industrial applications.
y Packaged in a rugged, compact enclosure for industrial applications.
y Leased-line interface protected with heavy-duty surge protection devices.
y Built-in hardware watchdog timer for software lock-up prevention without
requiring human intervention, making it ideal for unmanned locations.
y Works within an extended temperature range of -40ºC to +85ºC.
y Designed with coupling transformers for high-voltage isolation and common
mode noise rejection in industrial and commercial environments.
y Operate over voice-band conditioned or unconditioned leased-line and pilot
wires.
y Accepts power from a wide range of AC and DC power supplies:
– IG202T/V23: 90 to 265 VAC or 100 to 400 VDC
– IG202T/V23-DC: 10 to 60 VDC
– IG202T/V23-RM: Plug-in module for the Motorola/UDS RM16M modem nest
y Standard industrial connectors for data, analog, and power interfaces allow
reliable interconnection to other industrial equipment.
y Asynchronous data rates 0-1200 bps.
y Easily accessible DIP switches for user configuration and option selection.
y DB9-F connector for RS-232/V.24 interface, and RJ-11 for RS-485.
y Local analog, local digital, and remote digital loopback diagnostics.
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