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© Siqura 2012
Version 1.5 (071708-1e)
TETRA43x0TX&RX (MW07SP2)
1. General description
TETRA 43x0 (4310 for multimode, and 4350 for single-
mode) digital-optical multiplexer/demultiplexer systems
can transmit signals through four unidirectional,
independent composite video channels and two audio,
two contact closure, four data channels, and Fast
Ethernet, all bidirectional, independent and transparent,
using one single-mode optical fiber per system. Video
and data/audio input signals are sampled at a rate of 15
MHz and digitized with 10-bit accuracy.
TETRA 43x0 TX transceivers convert and combine
composite video, audio, data, contact closure, and
Ethernet signals into one digital stream, which in turn is
converted into an optical signal, using a wavelength of
1310 nm. The TETRA 43x0 TX will also convert and
decode an incoming 1550 nm optical signal carrying a
digital stream of data, audio and contact closure signals.
A TETRA 43x0 RX transceiver receives, converts and
decodes the video and other signals arriving through the
optical fiber. It will also convert and combine
audio/data/contact closure, and Ethernet inputs, then
transmit this information optically towards the
complementary TX, using an optical wavelength of
1550 nm.
The composite video channels can all individually be set
to transparent mode (i.e. video clamping off), and the
video channel operation mode and several switching
functions are accessible through software, using the
SmartNet management system (SNM). Several aspects
of data and audio interfacing can be controlled by means
of circuit board dip switches and jumpers.
The data port D1 and D3 interfaces can be set for
compatibility with RS-422, RS-485 2W, RS-485 4W,
and Manchester PTZ (bi-phase) data. In addition, using
modified cabling, the RS-422 interface can be set up for
digital current loop/TTY applications. Data ports D2 and
D4 are set up for adjustment free RS-232 operation.
The inputs of the 4-wire audio interfaces can be set to
high or low impedance, balanced or unbalanced. Contact
closures are normally open.
Front panel status LEDs indicate DC power good, video
signal presence, local and remote link synchronization
and data activity (see section 2).
TETRA 43x0 units are double-width (14TE) Eurocard-
sized modules and should be used in combination with
MC 11 or similar power supply cabinets, the EB-2
versions of these cabinets offering SNM management.
Figure 1. Tetra 43X0 RX front Panel. TX panels look
similar, with video inputs instead of outputs. See table
1.
Stand-alone models (/SA option, see supplementary
/SA-2 manual) need separate 12 VDC power supplies. A
Siqura PSA 12 DC-25 would be suitable.
TETRA 43x0
Four Channel Digital Video Multiplexer with Two-Way Audio, Data, and Ethernet
USER MANUAL
