HRT-227CS, HART to Single Mode Fiber Converter (version 1.00)
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2015/02/02
Page: 17
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3.2. Fiber Selection & Fiber Length
The specification of fiber cable for HRT-227CS is shown as below table.
Table 3-1 Specification of Fiber
Fiber Type
Diameter [μm]
(Core/Cladding)
Operating
Wavelength [nm]
Single mode
8.3/125, 8.7/125, 9/125, 10/125
1310
The HRT-227CS allows the maximum 30km fiber length. The higher attenuation of
fiber will reduce the transmission distance. The below table is the relationship between
fiber attenuation and length.
Table 3-2 Attenuation & Fiber Length
Module Name
Attenuation
[dB/km]
Allowed Fiber length [km]
HRT-227CS
0.4
30
> 0.4
< 30
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