RS232 modemIB PSTN III

Bausch Datacom | Belgium |

PSTN V.92 Modem
Wall mountable PSTN modem with wide range 85 – 264 Vac power supply in sealable housing. Isolated 3-wire RS-232 and 3-wire RS-485 interfaces with RJ45 connectors, allowing easy installation. Meant for ‘heavy’ industrial environments: the Indubox PSTN III is approved according to extended electromagnetical immunity requirements in the electricity market in Belgium (Laborelec, TST 25-3).

The InduBox PSTN III is designed to transmit and receive –transparent- ASCII formatted data on a analogue
PSTN (Public Switched Telephone Network) line in an industrial environment.
The InduBox PSTN III modem is especially conceived for ‘heavy’ industrial environments: the modem is tested
and approved according to the TST 25-3 extended immunity requirements in the Belgian electricity market. When
testing EN61000-4-3 – electromagnetical compatibility – Laborelec, the official Belgian lab creates a test
environment which generates 30 V/m field strengths instead of the standard ‘normal’ field strength of 10 V/m
(CISPR24 level = 10 V/m).
The modem has an integrated 85-264 Vac power supply circuit with a
low power consumption (Pidle = 1.8 W / Pmax = 2.0 W).
Built in a sealable IP51 housing with transparent lid the modem comes
with two galvanically separated serial interfaces, one RS-232 (3-wire),
one RS-485 (3-wire).
An important reset feature is provided by the Atmel watchdog
coprocessor of the modem. This long term watchdog
microprocessor has 2 possible ways to reset
the modem :
. Periodical ‘hard’ reset configurable between 1
and 68 hours.