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T: +44 (0)1293 541 200
E: [email protected]
W: www.Videosys.tv
The information contained in this document is the property of Videosys Broadcast Ltd. This document and the
information contained herein is provided for evaluation purposes only and is subject to change without notice.
Videosys Broadcast Ltd assumes no responsibility for errors that might appear in this document and gives no
representations or warranties as to the accuracy of the information contained herein, including but not limited to
the suitability and performances of the product or its intended application.
© Copyright Videosys Broadcast Limited 2018. All Rights Reserved. (Version 3)
Principal of Operation
The Videosys ODU is fundamentally a data
transmitter, it accepts data via Ethernet, RS232 or
RS485 and transmits this data to be received by one
or more camera control RX. The ODU-E has the
capability to intercept and interpret camera control
data, which combined with IP networking features
such as multicast, allow for a huge amount of
flexibility with multi ODU set-ups.
Connecting Components
The Camera control ODU requires three things, a
source of power, a source of data and an antenna
with which to transmit.
Power can be supplied either via the 4 pin XLR Power
Input Connector, or via the RJ45 connector utilising
Power over Ethernet. If both are connected at the
same time the 4 pin XLR will take priority over the PoE
by the ODU power path control circuit.
Data can be input to the ODU via the Data Connector
utilising either RS232, RS485 data format or Ethernet
via the RJ45 connector. The ODU can be configured
to automatically select an active data source from the
above list or to automatically select between groups
of sources or locked to only respond to a specific
source type e.g. RS485.
RS485 control when used with a Videosys IDU, will
operate on up to 1500m cable lengths. Using
Ethernet, cable lengths of up to 100m can be used. It
should be noted that many cheap and readily
available range extending solutions exist for IP
networks. RS232 connectivity is only rated for 15M
and is provided to allow operators to use equipment
such as off-the-shelf serial to fibre converters.
The most basic Uni-directional set up is shown in Fig
1. Where a single ODU is sending control data to be
received by a single RX in Unidirectional Data Mode.
Fig 1. A simple Uni-directional camera control setup
Connector Wiring Diagrams
The following diagrams are from the point of view of
the rear panel of the ODU facing the user.
