Minimum Requirements
10
NOTI•FIRE•NET™ PN 50257:E 7/5/01
Total the attenuation factors obtained in steps a. and b. This will provide an approximate
attenuation total. The actual attenuation can be measured end-to-end with fiber optic industry
standard equipment using a test wavelength of 850 nanometers.
2.
The system path length is limited. The system path length is defined as the distance a signal
would have to travel from one end of the network to the other end (refer to Figure 2). The
length is influenced by the total number of MIB, NAM-232, RPT devices, and medium along
the circuit path. Refer to Figure 3 for system limitations.
Figure 2
NOTI•FIRE•NET™
Circuit Paths
Figure 3 Node versus Medium Distance Limitations (For Twisted Pair)
Minimum Requirements
An NRT, NCS or INA and a fire panel with initiating devices define the minimum system
requirements for
NOTI•FIRE•NET™
. These system requirements are described in the
following paragraphs.
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