Nokia DNT2Mi sp/mp Operating Instructions Manual page 104

104 (128)
Data Network Terminal Single-port and Multiport Operating Instructions
m
0.4mm cable, no noise, BER < 1E-7
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
Figure 77. Maximal cable length
Factors limiting connection length
The maximum connection length of DNT2Mi is defined by the following
variables:
• Cable attenuation
The attenuation of a cable depends on thickness and pair capacitance. It
also depends on impedance mismatching, resulting from connecting
different types of cables, as well as from the reflections caused by this.
• Cable noise level
Noise in a cable is mainly caused by cross talk between wire pairs. The
main sources of noise are units using the same frequency band.
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DNT2Mi reach
kbit/s
2-w, no noise
4-w, no noise
DN01145897
Issue 2-0 en