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9.2
Optical budget calculation for serial communication
with LON
M11737-4 v2
Table 16: Example
Distance 1 km
Glass
Distance10 m
Plastic
Maximum attenuation
-11 dB
- 7 dB
4 dB/km multi mode: 820 nm - 62.5/125 um
4 dB
-
0.3 dB/m plastic: 620 nm - 1mm
-
3 dB
Margins for installation, aging, and so on
5 dB
2 dB
Losses in connection box, two contacts (0.75 dB/contact)
1.5 dB
-
Losses in connection box, two contacts (1dB/contact)
-
2 dB
Margin for repair splices (0.5 dB/splice)
0.5 dB
-
Maximum total attenuation
11 dB
7 dB
Section 9
1MRK 502 067-UEN B
Establishing connection and verifying the LON communication
82
Commissioning manual