Nokia DNT2Mi sp/mp user manual DNT2Mi reach, kbit/s

Data Network Terminal Single-port and Multiport Operating Instructions

m											DNT2Mi reach
						0.4mm cable, no noise, BER < 1E-7
9000
8000
7000
6000
5000
4000
3000
2000
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0		320				576		704				960	1024	1088	1152	1216	1280	1344	1408	1472	1536	1600	1664	1728	1792	1856	1920	1984	2048
192	256		384	448	512		640		768	832	896
													kbit/s

2-w, no noise

4-w, no noise

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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