MIU202T Installation, Operation & Diagnostics Edition: April 4, 1998 Page 3
2. PRODUCT OVERVIEW
The MIU202T is an industrial grade Bell202T modem for connection to
unconditioned and conditioned, voice grade, type 3002 two or four-wire leased
lines and metallic lines (eg; pilot wires). It can be powered from a wide range of
AC and DC power supplies, it is internally surge protected on both the power
and analog lines, and it will operate in temperatures from -40 to +85 deg C.
Internally, the MIU202T consists of a baseboard and a communication
module. The baseboard includes the power supply regulation and surge
protection. The communication module is a Telenetics™ Pony Express™
PE202T Modem Module.
The MIU202T is packaged specifically for the harsh environments found in
utility substations and industrial facilities. Though functionally similar to
commercial modems, the MIU202T includes special features that make it
particularly well suited for utility and industrial applications:
Environment: The MIU202T has been designed specifically for use in
harsh environments. In addition to an extended temperature
range (-40 to +85º C), the MIU202T includes surge, shock,
vibration, and safety features superior to those of
conventional commercial modems.
Power Supply: The MIU202T can be powered from a broad range of AC
and DC power supplies, such as an auxiliary supply (eg;
12VDC) from another piece of equipment, 125VDC from a
station battery or a standard 120VAC.
Industrial: The MIU is packaged in a rugged, compact, non-metallic
(ABS) enclosure. Designed for unmanned locations, the
MIUs do not include the array of pushbuttons and LEDs
normally associated with consumer-type modems.
Configuration is by dip switches. Standard industrial
connectors for data, analog and power interfaces allow
reliable interconnection to other industrial components.