Westermo TR-23 - Handbuch (Seite 20)

Modem
chip
control
6600-2002
05.00 Mälartryck
AB, Eskilstuna, Sweden
Westermo Teleindustri AB • S-640 40 Stora Sundby, Sweden
Phone +46 16 612 00 Fax +46 16 611 80
E-mail: [email protected] • Westermo Web site: www.westermo.se
Westermo Teleindustri AB have distributors in several countries,
contact us for further information.
Westermo Data Communications GmbH
Bruchsaler Straße 18, 68753 Waghäusel
Tel.: +49(0)7254-95400-0 • Fax.:+49(0)7254-95400-9
E-Mail: [email protected] Westermo Data Communications Ltd
Unit 14 Talisman Business Centre • Duncan Road
Park Gate, Southampton • SO31 7GA
Phone: +44(0)1489 580 585 • Fax.:+44(0)1489 580586
E-Mail: [email protected] • Web: www.westermo.co.uk
Subsidiaries
Block diagram
Analog filter
Frequency
modulation
Selectable
output level
Selectable
input sensitivity
Line relay
Data
buffer
DSR
GND
VCC
GND
2 or
4-wire
GND
RTS CTS DCD RD TD TD RD
Relay
output RS-232 RS-422/485
Data
buffer
Frequency
demodulation
Modem
Processor
Modulated data
OR