User's Manual
SD250NTG–USERGUIDE
April4,
2011
MidlandRadioCorporation
2
Introduction
The SD250NTG range is a 0.5 to 5 Watts RF data module at UHF frequencies.
The SD250NTG is housed in a rugged cast-aluminum box sealed to IEC 529
(IP54) making it suitable for a wide range of mobile and fixed applications.
The SD250 RF data module unit meets the essential requirements of the relevant
directives. In order to maintain this compliance the installation and safety
information must be adhered to at all times.
• The SD250 RF data module must only be installed where unintentional contact
cannot be made. The surface of the device may be hot to touch under certain
transmit conditions. The SD250 is not designed for permanent transmission. If
prolonged transmission periods are used, the unit will become hot and will
require an additional heat-sink to be fitted.
• When fitting the module into a fixed installation, care must be taken in the
routing of all cabling such that the insulation cannot become damaged.
• The recommended supply sources for use with the SD250NTG is a standard
12V / 2A dc supply, but is capable of operating in the range 9V - 18V.