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SECTION 4 – IP and Mesh Products
NETNode IP Mesh Radio (Robust)
Cobham NETNode IP mesh radios are the latest innovations in the
expanding range of Cobham Surveillance solutions that feature domo
technology at their core.
NETNode IP radios can be combined in a fluid self forming, self
healing mesh containing up to eight radios. The NETNode radios
within the mesh exchange data on a single frequency, simplifying
frequency management. The entire mesh occupies just 2.5MHz
of bandwidth (3 and 3.5MHz also available). The NETNode radios
employ the unique Cobham COFDM modulation scheme and
therefore offer excellent RF penetration and performance in the
presence of multipath.
The NETNode mesh radios can provide up to 3.5Mb/s of IP data
(data rate depends on mode, number of nodes and range between
nodes). This available bit-rate can be used to exchange IP data traffic
between nodes.
The highly flexible mesh topology means that data can be
exchanged between nodes in a point to point or multi-point
fashion, range can be extended by using nodes as repeaters. The self
forming, self healing mesh architecture makes the NETNode product
ideal for use in mobile surveillance applications, command and
control applications, or advanced robotics.
The NETNode can be connected to third party cameras using the
NETAV option. Alternatively, there are two dedicated PTZ camera
solutions available for direct connection to the NETNode: NETPTZ* is
a high performance, high quality day/night PTZ camera for long range
and overt surveillance; NETuPT is a miniature pan and tilt camera
suitable for up-close surveillance. The NETuPT and NETPTZ* options
require the NETAV option to be fitted.
Security of the entire mesh network can be ensured by the use of the
optional AES128 or AES256 encryption.
Control of the deployed mesh is achieved using the inbuilt web
browser or comprehensive Mesh Commander* PC application. This
software suite, based around a mapping display, is used to configure
and monitor the mesh and wider Cobham Surveillance systems,
and to control its nodes and cameras. Video can be viewed on the
PC device using the Mesh Commander* software or, if IP Hardware
Decoder devices are employed, video can be viewed on conventional
monitors and recorded on conventional recorders.
Specification:
Interfaces
RF Interfaces
(Antenna 1 and 2) NType
Power and Ethernet Amphenol 38999 Series 3
Control and misc I/O Amphenol 38999 Series 3
Camera Amphenol 38999 Series 3
Typical range
NETNode-R-217250 (1W) Non Line of Sight Light urban 500-700m
Line of Sight 40km+
RF Interfaces
Antenna 1 Switched transmit receive antenna
Antenna 2 Receive only antenna
RF and modulation
Output frequency 340 to 470MHz, 1000 to 1500MHz, 2170 to 2500MHz,
4500 to 5000MHz*, or 5500 to 6000MHz*
Tuning step size 125kHz step
Output power +30 to 10dBm in 0.25dB steps
Bandwidth 2.5, 3 or 3.5MHz
Mesh capacity Up to 3.5Mb/s
Modulation COFDM 360 carrier modulation
Carrier Modulation QPSK/16QAM (adaptive)
FEC rate FEC1/2
Receive diversity Maximum Ratio Combining
Receive sensitivity -98dBm for most robust mode
IP interface
Primary and secondary
ethernet electrical 100BaseT Ethernet
IP address allocation DHCP dynamic IP addressing/Static IP
Video and audio Multicast VLC compatible
streaming format RTSP Support
A/V input option
Video input Composite or SDI (selectable)
Video format 525 or 625 (PAL or NTSC)
Video encoding MPEG4
Quality User selectable quality level
Video bit-rate 2.4Mb/s to 50kb/s (variable)
Resolution 704, 576, 480, 352 or SIF (1/4 Resolution)
Frame rate Self selecting 30 to 2F/s
Stills capture feature HiRes JPEG file*
Audio input Line level or microphone level
Audio sample frequency 48KHz
Audio encoding MPEG audio layer 1 G726
Audio bit-rate 384 to 64kb/s
Store and Forward options*
Storage format SD card interface (Secure Digital card)
Record options Continuous or triggered
Files download From web browser interface/RTSP
Video and audio clip size 30 seconds
Open Audio comms channel (shared voice channel)
Multi-user audio
comms channel Interface microphone level/headphone o/p
Compression G726 32kbit audio 8KHz sampling and mute
Encryption
Type AES128 or AES256 (both optional)
GPS
Dedicated GPS interface RS232/RS485
Data interface
RS232/RS485 data input 1K2 to 115K2 baud switchable
(shared with user camera With UDP and TCP routing protocol
control)
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