User manual

Cabling
23
NOTE 1. To use IBM Type 1 cable, the 150 Ω Twisted Pair Type selection must
be made in your computer manufacturer’s Configuration software.
Table 4: Usable and Unusable 10BASE-T Cable
Cable
Level
Cable
Description
AC
Character
Specification
Twist/
Foot
10BASE-T
OK?
1 Unshielded
untwisted
N/A CCITT N/A NO!
2 Individual UTP 100Ω ± 30Ω RS232
1BASE5
AT&T PDS
N/A NO!
3 Typical
individual UTP
100Ω ± 15Ω TI, AT&T ISDN
10BASE-T
IBM Type 3
3-5 YES
4 Enhanced
individual UTP
100Ω ± 30Ω EIA, TIA
10BASE-T
NEMA
5-8 YES
5 Individual STP 100Ω ± 30Ω EIA, TIA
10BASE-T
8-10 YES
IBM
Type 1
Individual STP 150Ω PCC FT 1 N/A YES
1