ADACSNET USB CONTROL MODULE
8200-0310-01, REV. B
INSTALLATION GUIDE
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SensorNet Rules and
Network Types
The SensorNet communication protocol allows the
host computer and camera domes to exchange
data along a cable network (star, daisy chain, or
backbone).
SensorNet Rules
•
A star network cannot have more than four
branches, one line termination per branch
•
A backbone network has a termination at each
end of the line
•
A SensorNet line cannot have more than 32
network-compatible devices
•
A network cannot have more than four
repeaters in the path of any two camera domes
•
A SensorNet line or branch cannot exceed 1km
(3300ft). Use signal repeaters only when
exceeding the maximum distance or noise is an
issue
•
Signal levels for SensorNet-compatible devices
are from 0.3–5V (1–5V is recommended).
Network Types
Star Network
The star network allows you to relocate devices.
However, this network is not recommended in high
noise environments because the extra terminations
required will lower the signal to noise ratio.
A separate cable line (branch) runs from the USB
module to each device. Limit branches to four.
The example below shows the USB module as
the hub of a star network. The module is not
terminated.
Black box = USB module, T = Terminated
Not
Terminated
