
The LDR (Low Data Rate) system is a digital video
transmission system from Cobham Surveillance.
Designed to operate over very long ranges,
it features domo technology at its core.
The LDR receiver picks up the informational quality
video sent by the LDR transmitter at reduced
frame rates. The high level of compression and
reduced data rate means that the images can be
sent over great distances.
Narrowband digital transmissions - occupying
as little as 50KHz of bandwidth and therefore
more easily used at UHF frequencies - are
sent over the system. The LDR receiver
is available in a variety of frequency
bands from 300MHz to 1GHz - other
frequencies are available on request.
Security is ensured with optional AES128/256 bit
encryption.
Housed in a robust, water-sealed enclosure and consuming only 3W,
the LDR receiver is ideal for long term outdoor deployments.
The LDR system will transmit images in a non line of sight
environment up to 2km, and line of sight to 20km depending
on mode and frequency, further range can be achieved with the
optional clip-on booster PA.
45
SECTION 5 – Low Rate Data Video Products
SOLO – LDR Receiver
Specification:
Output
Composite Video Amphenol
Input
RF Input 1 and 2 TNC
RS232 Control Amphenol
Power Amphenol
RF
Frequency Bands 902 to 905MHz,
868 to 870MHz,
457 to 458MHz (others on request)
Receive Sensitivity -112 to -118 dBm
Tuning Steps 12KHz
Modulation
Bandwidths 50, 75, 100 or 125KHz selectable
Type COFDM, QPSK and 16QAM
Video
Line Standard PAL/NTSC
Resolution SIF (352 * 288) QSIF (176 * 144)
Coding Mode MPEG4
Delay 1 to 1.5 second end-to-end
Frame Rate 12, 5 or 2 frames/s
Decryption Format AES128/256 selectable (optional)
Control
Remote Control RS232 Control from PC GUI Application
Local Control Front Panel 8 channel select, RF On/Off,
Range mode, Lock, Alarm
Physical
Dimension L 150mm, W 120mm, H 35mm
Sealing IP67
Power
D.C Input 10 to 16V Reverse Polarity Protected
Power Consumption 3.5W
Environment
Temperature Range -20 to +60 deg C
Product Code:
LDRRX-090090
LDRRX-086087
LDRRX-045045
AES256RX
AES128RX
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