System Description The Guardian™ 2800 Series equipment
is a configurable multi-channel video transmission system.
It is a modular system
consisting of a motherboard assembly with connector slots
to accept the appropriate daughter boards which define the
functionality of the system.
The system has 20 video
I/O slots which are configured into two banks, video bank
A and video bank B. Each bank can be fitted with up to ten
video input cards or up to ten video output cards. A video
bank cannot contain a mix of video inputs and video outputs.
Each video I/O card accepts or produces a serial data stream
at a nominal rate of 140Mbits/s which contains each full
bandwidth real time video signal.
The 20 serial bit streams
from the two banks then connect to two high speed optical
card slots via a full crosspoint switch. The optical card
slots can accept either a high speed optical input card
or a high speed optical output card. The optical output
card accepts 10 serial video bit streams and time division
multiplexes them onto the fibre. The optical input card
does the inverse. The wavelength of the optical transmitter
card can be 1310nm or 1550nm. Furthermore there is option
to use specific DWDM lasers within the 1550nm wavelength
range. The different wavelengths can be combined on to a
single fibre.
The motherboard also has
two data card slots, each with five bi-directional data
or audio channels. The data channels can be combined with
the video signals and transmitted on the high speed optical
channel or can be transmitted on their own low speed optical
channel via a daughter board on the data card.
The mother board also
has a management port from which local and remote Guardian™
2800 units can be monitored using the MUXcomm
software package.
Point to Point Systems
The Guardian™ 2800 can
be configured as a point to point multiplexor with the following
options.
point-to-point
