User's Manual

EX7100 Technical Manual - Installation of Antenna and Equipment
©1999 Exicom Technologies (1996) Ltd 2-8 Issue 2 - February 2001
Connect the power supply cable to the 3-way connector marked ‘- GND +’. The DC input
lines on this connector are floating and have no power connection to the chassis ground
(neither the positive nor the negative terminal is connected to the EX7100 chassis). This
enables the EX7100 to be powered from either a positive or negative ground supply.
The centre terminal of the DC input connector is connected to the EX7100’s chassis and
may be strapped to the side of the DC input that is at station ground potential.
2.7 Terminal Type Specific Connections
The EX7100 is supplied as one of three types, Data, Exchange, or Subscriber. (Refer to
section 1.2). The interface connections to each terminal type are different.
Connection details for the three terminal types are as follows:
2.7.1 Digital Data Terminal Connections
The EX7100 provides both synchronous Data, e.g. V.35 and CCITT G.703 co-directional,
digital interfaces. The terminal automatically detects the presence of a digital interface
card.
Selection of the interface required is made in software using the front panel keypad. Refer
to Section 3.4.1 for configuration details.
Synchronous Data V.35
Once selected, the synchronous Data interface is made available on the DB15 connector
labelled ‘SYNC DATA’ on the terminal’s rear panel. Detailed pin-out information can be
found in Appendix A.4.
Various adapter cables are available to cater for V.35, RS-232 conversion. Contact your
Exicom International Supplier for details.
G.703
Once selected, the G.703 interface is made available on the DB15 connector labelled
‘G.703’ (for detailed pin-out information refer to Appendix A.3) and also on the pair of
BNC connectors labelled ‘G.703’, on the terminal’s rear panel.
The DB15 connector provides a 120 Ohm co-directional interface, whereas the BNC
connectors provide a 75 Ohm co-directional interface. It should be noted that the arrows
alongside the BNC connectors indicate the data flow to and from the terminal.
2.7.2 Exchange Terminal Connections
The EX7100 Exchange terminal allows connection of six 2-wire telephone circuits; six 4-
wire+E&M telephone circuits, or six 4-wire+E&M data circuits (up to 9600bps).
All circuits are connected to the terminal via the 50-way Champ connector, labelled ‘LINE
INTERFACE’, on the terminal’s rear panel. (For detailed pin-out information refer to
Appendix A.6)
The Exchange Terminal may be supplied with a 3 or 10 metre cable that can be plugged
directly into this connector. The other end of this cable should be terminated into the
PSTN’s MDF. Contact your Exicom International Supplier for details.