Jumpers; Phone Line Connections; Radio Connections; Leased And Fixed Line Connections - ABB 1MRS119000 Operator's Manual

2.3
2.4
2.5
2.6
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Jumpers

The jumper settings are for country-specific parameters. They should normally not be
changed after delivery of the modem.

Phone line connections

The 1MRS119000 modem is designed for communications over a Public Switched Net-
work Telephone line.
Connection to the phone system is made via an RJ12 type jack (connector Xn.1). Depend-
ing on the function of the line, the modem will be connected through one or several line
relays. It can be connected to a switched or leased line network, 2-wire or 4-wire trans-
former coupled line interface and a ring detector opto.
Cables for connecting the modem board to the dial-up lines or leased lines are not pro-
vided as the type of cable and attached connector depend on the application. Refer to the
technical specifications and pin configurations for attaching the 1MRS119000 modem
board to the available lines.

Radio connections

The interface connector Xn.3 is used for connecting the 1MRS119000 modem board to
either a leased line or a suitable radio transceiver. For the use of radio equipment extra I/O
signals are provided: output relay contacts for switching between send and receive and a
receiver subcarrier detection input.
The connection to a radio transceiver strongly depends on the type of radio used. It should
be noted that only certain types of radio transceivers are suitable for the transmission of
high speed digital data. For attaching the radio transceiver to the modem board, refer to
the documentation provided with the radio equipment and refer to the pin configuration
of connector Xn.3 given in chapter 'Technical Specifications'.
Cables for connecting the modem-board to the radio equipment are not provided as the type
of cable and attached connectors depend on the application and the type of radio used.
Always refer to the technical specifications and pin configurations for attaching the
1MRS119000 modem board to external devices.

Leased and fixed Line connections

Both the phone line and the radio interface can be used for attaching a leased line. In many
applications in distribution automation, leased lines, also called dedicated or private lines,
are used. The 1MRS119000 modem is designed for use over a 2-wire or 4-wire leased line.
No special line conditions are needed and the operation is full-duplex. The leased lines can
be connected to the phone line interface connector (Xn.1, see previous section) or to the
radio interface connector Xn.3.
Cables for connecting the modem board to leased lines are not provided as the type of
cable and attached connectors depend on the application.
Always refer to the technical specifications and pin configurations for attaching the
1MRS119000 modem board to external devices.