Westermo MA-19 User Manual

Korthållsmodem

Short Haul Modem

Kurzstreckenmodem

INSTALLATIONSANVISNING

INSTALLATION MANUAL

INSTALLATIONS ANLEITUNG

6019-2001

www.westermo.se

MA-19

©

Westermo Teleindustri AB • 1998 • REV. A

Galvanic

Isolation

Transient

Protection

Balanced

TransmissionCEApproved

8 6019-2001

Specifications

Transmission Asynchronous Full/half duplex or simplex Interface 1 EIA RS-232-C/CCITTV.24, V.28

25-pin D-sub, female DCE

Interface 2 10 mA tri-state balanced current loop 5-position

detachable screw-terminal mounted on the rack’s back board

Transmission rate 0-38,4 kbit/s Indicators Power, TD, RD, RTS, DCD Isolation Complete galvanic insulation with opto-coupler (data)

and transformer (supply)

Isolation voltage 1500 V Power supply External through PS-02 mounted in rack (RV-01)

±20 V DC ±20%

Power consumption +20V 60 mA, -20V 40 mA Temperature range 5-50°C Humidity 0-95% RH, non-condensing Dimension 100x100 mm Weight 0.1 kg Mounting In rack, takes one card-slot in RV-01

96019-2001

F2

F1

S1

Switch settings

The MA-19 can through different switch settings be adapted to a variety of operating conditions. The switches are located on the circuit board and have the following functions:

S1 1-6 Selection of signal activating trans-

mitter (carrier) S1 7-9 Selection of signal controlling CTS F1/F2 Fuse 100mA Fast

Transmitter

(carrier) activated by

Factory settings

Always active

S1

ON

123456789

AUX

S1

ON

123456789

SRS

S1

ON

123456789

RFR

S1

ON

123456789

RTS

S1

ON

123456789

DTR

S1

ON

123456789

DTR and AUX

S1

ON

123456789

DTR and SRS

S1

ON

123456789

DTR and RFR

S1

ON

123456789

DTR and RTS

S1

ON

123456789

CTS

controlled by

RTS

S1

ON

123456789

RTS

S1

ON

123456789

Always high

S1

ON

123456789

DCD

S1

ON

123456789

10 6019-2001

Transmitter 1 R+ Transmitter 2 RReceiver 3 T+ Receiver 4 T-

5 Shield

No.

I 2 103 TD/Transmitted Data

O 3 104 RD/Received Data

I 4 105 RTS/Request To Send O 5 106 CTS/Clear To Send O 6 107 DSR/Data Set Ready

– 7 102 SG/Signal Ground

O 8 109 DCD/Data Carrier Detect

I 11 – AUX/Auxiliary

I 19 120 SRS/Secondary Request to Send

I 20 108/2 DTR/Data Terminal Ready

I 25 133 RFR/Ready For Receiving

I=Input O=Output on MA-19

Direction

Description

Direction 1)

Pin no.

CCITT V.24

Circuit no.

Connections

Line connection

(5-Position screw-terminal)

Terminal connection (DCE) (RS-232-C/V.24/V.28, 25-Position D-sub, female)

Section of rack RV-01 with one MA-19 mounted.

Terminal connection to a 25-position D-sub (female) connector on MA-19.

Line connection to a 5-position detachable screw-terminal, which is mounted on the male connector located at the rear of RV-01.

12345

1 2 3 4 5

1

13 25

14

116019-2001

55

Line connection

Transmitter

Receiver

2

1

4

3

Receiver

Transmitter

Shield 1)

4

3

2

1

R+

R-

T+

T-

T+

T-

R+

R-

MA-19

Twisted pairs

±10 mA Current

Loop e.g. MA-12

1) If shielded cable is used, connect the shield only at one end to avoid ground currents.

Transmission range (interface 2)

Cable

42pF/m

0.3mm

2

Transmission rate bit/s

1200

12000m

600

18000m

2400

8000m

4800

5000m

9600

2500m

19200

1000m

38400

500m

12 6019-2001

Hints

The MA-19 has the same line interface as many of Westermo’s systems MA-12, MA-14, MA-17, MA-18, MM-13, MM-14, LA-01, LD-01 and LD-02 are hence compatible.

The RS-232 interface on the MA-19 is configured as DCE (Data Communication Equipment). Most printers, PC’s and terminals are set as DTE (Data Terminal Equipment). Some recommendation of cable configurations are given below.

If any problems do occur on set up of the MA-19, the LED’s will be helpful.

- PWR: The unit has power.

- RD: Data received on line interface.

- TD: Data received on RS-232 interface.

- DCD: Carrier indication, must be on for transmission.

- RTS: Indicates the carrier control status. A good way to check the MA-12 is to carry out a loop back test. Connect T+ to R+

and T- to R-. Connect the RS-232 port to a terminal. When keys are pressed on the terminal you should receive the echo on screen. The TD & RD lights will both flicker simultaneously as you press the keys.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

MA-19

1 2 3 4 5 6 7 8 9

9-pol. PC

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

DTE

MA-19

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

DCE

MA-19

136019-2001

OWN COMMENTS

.....................................................................................................................................................................................................................

6019-2001 05.98 TunaTryck AB, Eskilstuna, Sweden

Westermo Teleindustri AB • S-640 40 Stora Sundby, Sweden

Phone +46 16 612 00 Fax +46 16 611 80

E-mail: info@westermo.se • 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: westermo.germany@t-online.de

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: sales@westermo.co.uk

Subsidiaries

Block diagram

+12V 0V

+12V -12V

0V -12V

+12V

0V

-12V

STAB

100mA

10

11

7

9

2

6

3

8

5

4

2

3

RTS

+12V

EN

DCDRD

TD

+12V

1

4 5

6

X2

X3

S1

0V

+12V

DTR

RTS

CTS

DCD

RD

DSR

TD

SG

0V

-15...25V

+15...25V

POWER SUPPLY

RS-232-C/V.24 LINE 1)

R+ (1)

R- (2)

T+ (3)

T- (4)

(5) Shield

7 8 9

25

19

11

20

AUX

SRS

RFR

&

Westermo MA-19 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual