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RANGER COFDM TRANSMISSION
The Ranger is an exceptionally stable transmission platform in high multipath environments, offering high
quality low latency video images in conditions where traditional analogue methods fail. The Ranger is suitable for body worn, mobile and temporary operations, due to its low current consumption; allowing efficient battery operation.
 APPLICATIONS:
- Rapid deployment camera systems
- Security installations
- Military applications
- Transport applications
- Commercial & Industrial applications
- Covert CCTV monitoring
- Temporary installations
- 'Last mile haul' - (camera to monitoring/network)
FEATURES:
- High quality digital video
- Non-line of sight transmission capability
- Robust noise free transmission
- Greater transmission distances
- Encrypted secure transmission
- Available in 1.3GHz, 2.4GHz and 5.8GHz bands
- Stero audio channels
- Multiple cameras within a single frequency
- Real time transmission (low latency)
- Compatible with industry standards
- Small compact modular enclosures
- Simple to implement
- Portable or static installations
- Low power consumption
- PAL and NTSC options
- Cost effective
COFDM is a form of modulation that is particularly well suited to the needs of surveillance teams. Video
signals transmitted using the old analogue technique were prone or susceptible to echoes and ghost imaging
because the signal would ‘arrive’ at the receiver at slightly different times - the signal would bounce
around off the buildings and/or landscape, these multiple signals would thenprduce a ghost or echoed
image. Video signals transmitted via COFDM completely address the ‘multi-path’ issue; the timing is
such that the received signal is reconstructed back to its original form from the various multiple paths thus
removing any echo or ghosting.
Using a diversity receiver increases the stability and reception of the video link. Diversity can be increased
to utilise four antennas in 'cell site' installations. We supply the system with a choice of frequencies
to suit all operational environments. Secure transmission is achieved using the latest 128 bit AES encryption algorithms as standard across the range.
SPECIFICATIONS
TRANSMISSION:
Compression - JPEG and MPEG4
Compression Rate - CBR and VBR
Chrominance Profi le - 4:2:0
Line Standard - 525 and 625
Video Bit Rates - 1Mb/sec to 20 Mb/sec
Latency - <100mS
Video Input - PAL or NTSC
Encryption - AES Encryption: Compliant with ACPO
Audio - Stereo Audio
Output Frequency
- L Band (1.15GHz - 1.4GHz)
- S Band (2.28GHz - 2.485GHz)
- C Band (5.725GHz - 5.850GHz)
Custom frequency bands are available upon request
Bandwidth & Resolution
- Standard - 8MHz JPEG2000 - QPSK (720x576)
- Narrow - 2MHz MPEG4 @ QPSK (704x576 - 4CIF)
- Ultra Narrow - 1MHz MPEG4 - 16QAM (352x288 - CIF)
Output Power - 100mW (Ranger1) and 1W (Ranger2) systems available
Modulation Type - 1QPSK or 16 QAM or 64QAM
FEC - 1/2 - 7/8
COFDM Carriers - 2K carriers
COFDM Standard - DVB-T Proprietary
Dimensions - W59mm x D38mm x H146mm (Ranger1), W130mm x D38mm x H175mm (Ranger2)
Weight - 0.39Kgs (Ranger1), 1.55Kgs (Ranger2)
Power Supply - 500mA @ 12vDC (Ranger1), 1.5A @ 12vDC (Ranger2)
Antenna Connection - SMA
Power Connection - LEMO 2 Pin OB
Channel Selection Switch - Rotary HEX Switch
Video Connector - BNC
RECEIVER:
Sensitivity - To -105dBm
Chrominance Profi le - 4:2:0
Line Standard - 525 and 625
Video Bit Rates - Between 1Mb/sec to 20Mb/sec
Latency - <100mS
Video Output - PAL or NTSC
Encryption - AES Encryption: Compliant with ACPO
Input Frequency - 1.15 - 1.4GHz, 2.28 - 2.485GHz, 5.725 - 5.850GHz
Dimensions - W272mm x D60mm x H114mm
Weight - 1.6Kgs
Power Supply - 600mA @12vDC
Antenna Connection - N Type (2off Diversity)
Power Connection - LEMO 2 Pin
Video Connection - BNC
Audio Connection - 2x Phono
Video Store - Digital view and record system (optional briefcase receiver)
Antenna options:
- Standard Omni Antenna
- High Gain Omni Antenna
- High Gain Directional Grids
- Yagi Antennas
- Mounting Kits
- Mobile Antenna Sets
Technical specifications liable to change at the discretion of manufacturer
TECHNICAL SUPPORT
Technical Support is available from MEL if advice is required when planning the system and choosing antenna for your individual needs.
Email: sales@melsecuresystems.com
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