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Friday, 24 October 2014

IDEX 2015

Enterprise Control Systems Ltd will be exhibiting at IDEX 2015 at the Abu Dhabi National Exhibition Centre, UAE from 22nd-26th Feb 2015.  Please visit us on Stand 05-C09, ADS Pavillion

Downlink Equipment

Digital Downlink High Definition

Digital Downlink High Definition

The ECS HD digital downlink equipment is designed to comply with Home Office MG42C, DVB-T, MPEG2 and H.264 specifications. The system has been optimised for air to ground use and is available in a number of bands.

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  • General Description
  • Technical Data

General Description

The ECS HD digital downlink equipment is designed to comply with Home Office MG42C, DVB-T, MPEG2 and H.264 specifications. The system has been optimised for air to ground use and is available in a number of bands. The system has been designed to the same mechanical and transmission output standards as the popular Standard Definition system. This allows for easy upgrade of the system, whilst mitigating risk in the air certification process, by only having to replace the modulator / encoder from within the system.

This COFDM downlink system can transmit both Standard Definition and High Definition video products within one system.

Advantages include:

  • Commercial or Military grade encryption (subject to export license approval)
  • 1 Channel of High Definition TV, 1280x720p, H.264 compression
  • 2 simultaneous video channels of analogue TV over MPEG2 DVB-T
  • Bandwidth efficient 8MHz RF channel
  • GPS based auto tracking
  • High data rate (up to 28Mbps)
  • 2 audio channels

ECS has a proven reputation for fixed wing and rotary wing downlink equipment and considerable development and trials have gone in to the design, certification and production of this new system.

The system consists of the following equipment:

  • Modulator / Encoder
  • 10 Watt power amplifier
  • Control unit SCU
  • Antenna (Frequency & Platform dependant)

The system can transmit 1 HDTV channel, 1 HDTV and 1 SDTV channel or 2 SDTV channels simultaneously, dependant on compression rates.

The HD digital down link system is fully compatible with all HD COFDM Receiver equipment. Selection of the receiver equipment will depend on the application of the receiver i.e. static or mobile. The ground receiving equipment is available, with HDTV and SDTV outputs.

The HD Digital downlink transmitter is available in set bands between 1.2 GHz and 5.4 GHz*

*Other frequencies are available on request, after consultation with a sales representative.

Technical Data

Part Numbers:  VEM2-HD-D1.4-**, VEM2-HD-D2.3-**, VEM2-HD-D3.5-**,
   VEM2-HD-D4.5-** and VEM2-HD-D5.3-**.  The ** defines
   The video input configuration – see ECS doc PR-16009-B-00-0
HDTV Video Channel: HD Interface SMPTE 292M-1998,
   Resolution SMPTE 296M-2001 Conforming to ISO/IEC 14496-10
   (H.264/AVC)  High Profile Level 4.0 1280x720p
SDTV Video Channels: 2Y/C or Pal independent video channels
Audio, Data & GPS: 2 Audio MPEG-1 L2 channels, 2 Data Channel, 1GPS (ARINC 429
Modulation Technique: Coded Orthogonal Frequency Division Multiplexing (COFDM)
No. of carriers:  2k in 8MHz bandwidth
On air data rate: 5-15 Mbps per channel video, 2.4 Kbps audio and data
Encryption:  AES 256 Bit  
Forward error correction: Combination of reed Solomon, Verterbi interleaving and outer
Power Supply:  1.5 Amp @ 28V maximum
Size & Weight:  300 x 175 x 70mm, 2kg approx
Part Numbers: 
 VLT15-10-6D1.4  VLT15-10-6D2.3  VLT15-10-6D5.3
   VLT15-10-6D3.5  VLT15-10-6D4.5 
Output Power:  10 Watts channel power from VLT15 power amplifier
Input:   RF @ -7dBm
Power consumption: 6.0Amps @ 28V DC typically
Frequency Bandwidth: 10% Bandwidth maximum
No. of RF channels: 16 maximum
Enclosure & Weight: 260 x 120 x 137mm, 5.5kgs
Transmission Bandwidth:  8MHz
Encryption Control Unit
Part Numbers:  ECU NVG HDVS
Display & Controls: 32 character LCD, NVG Compatible
Size & Weight:  2.25 x 5.75 inches, (Dzus fittings), 300 grams
Power:   28V DC from VEM2-HD-D*.*-**
Functions:  ECU NVG with HD Menu and Video Switch Menu for multiple
   HD-SDI inputs ECU unit with NVG filters for the display, button
   LEDs and Display LEDs.  Incorporates a menu for the selection of the
   HD-SDI input to the HD encoder in the VEM

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