3-11
Maximum wiring distances are shown in the table below.
Table 3-2. Wiring Distances
Media Type Size Data Rate Max Distance
57.6 kbps 2,100m
0.2 mm2
unscreened
twisted pair 9.6 kbps 3,600m
57.6 kbps 3,000m
Wired 0.8 mm2
screened twisted
pair 9.6 kbps 5,200m
50/125 um
(4dB/km loss) 3,000m
50/125 um
(3dB/km loss)
57.6 or 9.6 kbps
4,500m
62.5/125 um
(4dB/km loss) 4,000m
Optical Fiber
62.5/125 um
(3.75dB/km loss)
57.6 or 9.6 kbps
4,600m
Notes:
• 0.8 mm2 fire-rated screened twisted pair cable must not have more than 190nF/km
capacitance or 21Ω/km resistance.
• 0.2 mm2 unshielded twisted-pair telephone cable must not have more than 72nF/km
capacitance or 84Ω/km resistance.
• Between any two connected network nodes, L+ of one node connects to R+ of the
other, and L- connects to R-.
Continued on next page
Step 4. Wiring Network Cards, Continued
Wiring Distances