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Table 2 - Typical Media
CABLE TYPE
NOMINAL
IMPEDANCE
ATTENUATION
PER 1000 FT.
AT 5MHZ
RG-62 Belden #86262
93
5.5dB
RG-59/U Belden
#89108
75
7.0dB
RG-11/U Belden
#89108
75
5.5dB
IBM Type 1* Belden
#89688
150
7.0dB
IBM Type 3* Telephone
Twisted Pair Belden
#1155A
100
17.9dB
COMCODE 26 AWG
Twisted Pair Part #105-
064-703
105
16.0dB
*Non-plenum-rated cables of this type are also available.
Note: For more detailed information on Cabling options including RS-485, transformer-coupled RS-485
and Fiber Optic interfaces, please refer to TN7-5 - Cabling Guidelines for the COM20020 ULANC,
available from Standard Microsystems Corporation.