Composite Interface Selection; Composite Network Connection - Black Box Echo Series User Manual

Echo 2 Mbps Multiplexer

Composite Interface Selection

The required interface (European 120 Ohms RJ45 or UK 75 Ohms 2 x BNC), must be
selected using the internal jumper link as described in the appendices, before connecting
the equipment. The current interface type is reported on the main set-up screen as either UK
or EUR as appropriate.

Composite Network Connection

The Echo Time Division Multiplexer supports both UK (75 Ohm) and European Network
Interfaces.
The composite port appears on the back panel as an RJ45 socket (European 120 Ohms) and 2
x BNC connector (UK 75 Ohms), the pin-out for each interface standard being shown in
Appendix F.
For UK connection, screened BNC cables should be used, with the screen connected to
chassis at the TX connector only (LK1 = 1-2, LK2 = 2-3).
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