User manual

7
Product Description 3
Supplied Components
• A network video server, model 7701EA or 7701DA, with a terminal block for connecting power and external
devices.
• A 12V DC external power supply (North America only), unless one of the following optional power supplies
are ordered:
– A 200W power brick with one or more wiring harnesses.
– A Power over Ethernet (PoE) kit.
• A CD with software and product documentation
System Requirements for Unit Setup
• A computer with Microsoft Windows 98/2000/XP operating system and network access
• Microsoft Internet Explorer (version 5.5 or higher) or a free serial port and terminal software
Note
Make sure your graphic card is set to 16 or 32 bit color depth and Microsoft's Virtual Machine is installed
on your computer.
Overview of functions
Network Video Server
The 7700 encoder and decoder are ultra-compact network video servers. Their primary functions are encoding
or decoding video, audio and control data, converting them from analog to digital formats and vice versa. Due
to the units’ small size, they can easily be integrated into small enclosure, and since all transmission between
video servers, or between video servers and external computers, is IP based, the units can take advantage of
existing network infrastructure at the site in which they are installed.
The 7700 Series contains a transmitter (encoder) and receiver (decoder). Point-to-point and point-to-multi-
point connections can be configured between the two types of units. Video, audio and data from encoders can
also be decoded by a computer equipped with Latitude NVMS or the 7700 Series’ configuration software.
Video Encoding
The 7700 Series units use the MPEG-4 video compression standard. MPEG-4 enables data transfer at narrow
bandwidth – via Internet for example.
Dual Encoding
Dual encoding allows for incoming video and audio to be encoded simultaneously into two different streams
with different quality settings.
Multicasting
In suitably configured networks, the multicast function enables simultaneous, real time video transmission to
multiple receivers. This functionality requires that the network on which the 7700 Series units reside support
the UDP and IGMP protocols.