Specifications

10
MINIATURE LOCAL MUX-12
2. Introduction
2.1 General
The Miniature Local Mux-12 is a time-division
multiplexor that enables up to 12 terminals to be
multiplexed onto a single cable, in point-to-point
applications. The Mux-12 contains a built-in line driver
that extends the high-speed multiplexed data over
twisted pairs.
2.2 Functional Description
The Mux-12 has 12 sub-channels that are connected by
RJ-45 connectors accessible from the top panel. The unit
can be strapped for 6 or 12 sub-channels according to
the desired application.
Multiplexing is implemented using an over-sampling
technique that enables each one of the 12 channels to
be sampled at a rate of 78.6 kbps. This technique results
in oversampling distortions, with a magnitude
proportional to the bit rate of the sub-channel. Table 2-1
summarizes the performance at various speeds and
modes of operation.