User's Manual

455U Radio Modem Module User Manual
Page 4 © November 2004
How to Use This Manual
To receive the maximum benefit from your 455U product, please read the
Introduction, Installation and Operation chapters of this manual thoroughly
before putting the 455U to work.
Chapter Four Configuration details the configurations available and explains
the diverse operation of the product in detail.
Chapter Five Specifications details the features of the product and lists the
standards to which the product is approved.
Chapter Six Troubleshooting will help if your system has problems and
Chapter Seven specifies the Warranty and Service conditions.
The foldout sheet 455U Installation Guide is an installation drawing
appropriate for most applications.
WARNING
1. To avoid the risk of electrocution, the antenna, antenna cable, and all
terminals of the 455U module should be electrically protected. To
provide maximum surge and lightning protection, the module should be
connected to a suitable earth and the antenna, antenna cable, and the
module should be installed as recommended in the Installation Guide.
2. To avoid accidents during maintenance or adjustment of remotely
controlled equipment, all equipment should be first disconnected from
the 455U module during these adjustments. Equipment should carry
clear markings to indicate remote or automatic operation. eg. "This
equipment is remotely controlled and may start without warning. Isolate
at the switchboard before attempting adjustments."
3. The 455U module is not suitable for use in explosive environments
without additional protection.
4. All antenna installation and servicing should be done by qualified
personal only. When installing or working near the antenna it is
important to ensure that the transmitter is not operating, ensure the
transmitter is disabled.
5. The antenna can have very high RF radiating fields and must be installed
so that under normal operating conditions that a person cannot approach
within 2.3 metres (7.5 feet) of the antenna. See chapter 2 for antenna
installation guidelines.