Quick Start Manual

Cabling Specifications B-1
Appendix B
Cabling Specifications
This appendix provides specifications for cables used with the NETGEAR Model EN516 Ethernet
Hub.
Cable Specifications
For 10 Mbps connections, Category 3, 4, or 5 cables can be used. NETGEAR highly recommends
using Category 5 cable to avoid unnecessary expense or confusion if you upgrade to Fast Ethernet.
Table B-1 lists the electrical requirements of Category 3, 4, and 5 cables.
Table B-1. Electrical requirements of Category 3, 4, and 5 cables
Specification Category 3 Category 4 Category 5
Number of pairs Four Four Four
Impedance 100 Ω ± 15% 100 Ω ± 15% 100 Ω ± 15%
Mutual capacitance
at 1 KHz
≤6.6 nF per 100 m ≤5.6 nF per 100 m ≤5.6 nF per 100 m
Maximum attenuation
(dB per 100 m, at 20° C)
at 4 MHz: 5.6
at 10 MHz: 9.8
at 16 MHz: 13.1
at 4 MHz: 4.3
at 10 MHz: 7.2
at 16 MHz: 8.9
at 16 MHz: 8.2
at 31 MHz: 11.7
at 100 MHz: 22
NEXT loss
(dB minimum)
at 4 MHz: 32
at 10 MHz: 26
at 16 MHz: 23
at 4 MHz: 47
at 10 MHz: 41
at 16 MHz: 38
at 16 MHz: 44
at 31 MHz: 39
at 100 MHz: 32