8
6619-2202
Description
The TDW-33 is designed to function reliably within industrial environments and in areas
of high level interference. The modem has an RS-232 interface supporting terminal data
rates up to 115 kbit/s.
The TDW-33 is a V.90 modem meaning that it can support data rates of up to 56 kbit/s
on the PSTN line side.
The modem is equipped with transient protection on the line side and a “watchdog”
that monitors and automatically resets the modem in the event of a fault. These func-
tions together with remote configuration make the modem perfect for installation at
unmanned sites and prevent the need of costly service trips.
The modem also has password protection, dial-back security and caller ID answering to
ensure that only authorised users can communicate with the modem and any connected
equipment.
The TDW-33 is ideal for industrial applications as it mounts easily on to a 35 mm
DIN-rail, runs from 12–36 VDC power supplies, has screw terminal connections and
is tri galvanically isolated.
For ease of setup the modem is supported by the Westermo TD-tool configuration soft-
ware. Drivers for Windows setup are also supplied.
… Extended temperature range –25°C to +70°C
… Data rate up to 56 kbit/s (V.90)
… Terminal rate up to 115.2 kbit/s
… DTR and incoming data dialling
… Watchdog
… Secure call back and access
… Industrial environment transient protection on all interfaces
… Up to 11 data bits
… Tri-Galvanic isolation (interface/line/supply)
… Caller ID presentation and answering
… Remote configuration
