Kippzonen COMBILOG Data Logger Manuale Utente Scaricare il pdf (Pagina 91)

Note: These specifications refer to bus cables with a conductor

cross section of 0.22 mm² and a permissible signal attenuation

of max. 6 dB referred to the overall length. According to previ-

ous experience the line length can be twice as long if a two-

wire circuit with a conductor cross section of at least 0.5 mm² is

used.

10.4 Bus Cable

For setting up a bus topology a shielded twisted pair with at

least two leads and the following electric characteristic values

should be used:

 characteristic impedance : 100 ... 130 Ω at f > 100 kHz

 operating capacity : max. 60 pF/m

 conductor cross section : min. 0.22 mm² (AWG 24)

 attenuation : max. 6dB referred to the

overall length

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Kippzonen COMBILOG Data Logger Manuale Utente Pagina 91