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

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AUX

S1

ON

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SRS

S1

ON

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RFR

S1

ON

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RTS

S1

ON

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DTR

S1

ON

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DTR and AUX

S1

ON

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DTR and SRS

S1

ON

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DTR and RFR

S1

ON

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DTR and RTS

S1

ON

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CTS

controlled by

RTS

S1

ON

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RTS

S1

ON

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Always high

S1

ON

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DCD

S1

ON

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