Heli-Coder 4 Transmitter Operation Manual | Doc. No. 6051452100 Rev. C
Broadcast Microwave Services, Inc.
1
1 INTRODUCTION
This document provides instructions for installation, operation and maintenance of the Heli-Coder 4 (HC4) COFDM
Transmitter controlled by a DLC50 Downlink Control Panel.
BMS offers a wide selection of airborne products to meet the video and data requirements of today’s real world
applications. The Heli-Coder™ 4 (HC4) together with the DLC50 controller provides a simple, powerful solution
containing everything needed for high-quality, reliable transmission. This includes the video encoder, modulator,
up-converter and high-power amplifier and an intuitive powerful control interface (see Figure 1.).
Standard COFDM modulation offers excellent performance in urban and non-line of sight environments with
significant multipath. The HC4 also provides an integrated GPS data interface that reduces the components
needed to integrate location data into tracking systems. The HC4 provides everything required to achieve 10 W
output power in an ultra-compact case. The DLC50 control panel allows the HC4 unit to be mounted remotely
within the avionics bay while providing full control from the flight deck.
With the flexibility of MPEG-2 and H.264 compression, the HC4 efficiently handles SD or HD video and can be
configured to deliver high speed data as an ethernet radio. The HC4 is also Geo-Point™ capable. Geo-Point™
uses metadata supplied by the equipment serving as the video source and allows the display of bearing and
distance to the location shown on the screen in real time. (Geo-Point™ requires a compatible receiver.)
NOTE: The standard version of the HC 4 is configured to be controlled by a DLC50 Control Panel. Custom
configurations and control schemes may be supported. Contact BMS regarding your operational requirements and
the range of solutions BMS offers.
Broadcast Microwave Services (BMS) is a leader in wireless digital microwave technology providing innovative
products for the television broadcast, video, telemetry and surveillance industries. A wholly owned subsidiary of
Cohu, Inc., BMS designs and manufactures a comprehensive line of microwave communications equipment for
broadcasting sports venues, law enforcement and military applications. BMS also builds and integrates the
command and control centers to provide fully functioning, complex, end to end digital systems.
For the latest product and system information please visit
www.bms-inc.com
.
Broadcast Microwave Services, Inc.
12367 Crosthwaite Circle
Poway, CA 92064
Tel: +1 (858) 391-3050
Toll free (US): 800-669-9667
Fax: +1 (858) 391-3049
Email:[email protected]
www.bms-inc.com
