Westermo MA-21 - Manual (Page 8)

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
Solent Business Centre • Millbrook Road West
Millbrook, Southampton • SO15 0HW
Phone: +44(0)1703-704 611 • Fax.:+44(0)1703 702 682
E-Mail: [email protected]
Subsidiaries
V.24/RS-232
PE
SG
Line
T+
T-
TD
AUX
SRS
DTR
DSR
DCD
PG
Power
Supply
R+
R-
CTS
RTS
RD
Shield
7
0V
+12V
6
8
3
4
20
19
1
2
11
2
TD
2)
S1
3
S2
R51 R47
+24VB
0V
0VB
+12V
-12V
Isolated power supply
F1
1
+12V
1
2
0VB
1
4
2
5
6
3
4
20mA
+24VB
R49
PE
1
0VB
1
4
2
5
6
3
2
20mA
+24VB
R50
PE
R48
PE
S4
RD
3
4
S2
8
7
4
5
9
S1
6
5
3
1) 1) 1)
1)
+12V
PWR
5
0VB
S3
Block diagram
1) 0 Ω resistors R48-R51 are normally not mounted.
2) Metal housing on D-sub is connected to PE