Chapter 5. Planning for Twisted Pair Cable Connections
39
Type 3 Media Specifications:
Wire gauge: 22 or 24 AWG
Wire type: Solid copper, twisted pair
Minimum twists per foot: 2
Maximum dc resistance per 305 m (1000 ft): 28.4 ohms.
Category 3
Data, up to 16 MHz.
This category applies to cables currently specified in ANSI/EIA/TIA 568. It is
intended for data transmission rates of up to 10Mbps.
Category 4
Data, up to 20 MHz.
This category is intended for data transmission rates of up to 16Mbps.
Category 5
Data, up to 100 MHz.
This category is intended for data transmission rates of up to 100Mbps. EIA/TIA
Category 5 media exceeds the requirements of EIA/TIA Category 4. You can use
the EIA/TIA Category 4 values for the maximum number of attaching devices and
the maximum lobe length Category 5 wiring.
In addition to operating at higher frequencies, Category 4 and 5 cable must meet
higher standards for mutual capacitance, attenuation, and near-end crosstalk than
EIA/TIA Category 3 does.
Characteristic Impedance at:
256 kHz
= 90.0-120.0 ohms
512 kHz
= 87.0-117.5 ohms
772 kHz
= 85.0-114.0 ohms
1 MHz
= 84.0-113.0 ohms
Maximum Attenuation at:
256 kHz
= 4.00 dB/305 m (1000 ft)
512 kHz
= 5.66 dB/305 m (1000 ft)
772 kHz
= 6.73 dB/305 m (1000 ft)
1 MHz
= 8.00 dB/305 m (1000 ft)
Additional Specifications:
Cable must conform to one of the following
specifications:
- ICEA S-80-576
- REA PE-71
- Bell System TR-48007
Summary of Contents for 8265
Page 1: ...8265 Nways ATM Switch Planning and Site Preparation Guide GA33 0460 0 IBM...
Page 2: ......
Page 3: ...8265 Nways ATM Switch Planning and Site Preparation Guide GA33 0460 01 IBM...
Page 8: ...vi IBM 8265 Planning and Site Preparation Guide...
Page 10: ...viii IBM 8265 Planning and Site Preparation Guide...
Page 14: ...xii IBM 8265 Planning and Site Preparation Guide...
Page 16: ...xiv IBM 8265 Planning and Site Preparation Guide...
Page 26: ...10 IBM 8265 Planning and Site Preparation Guide...
Page 38: ...22 IBM 8265 Planning and Site Preparation Guide...
Page 70: ...54 IBM 8265 Planning and Site Preparation Guide...
Page 118: ...102 IBM 8265 Planning and Site Preparation Guide...
Page 121: ...Copyright IBM Corp 1994 1998 105 Appendix C Blank Planning Charts...
Page 122: ...106 IBM 8265 Planning and Site Preparation Guide...
Page 123: ...Appendix C Blank Planning Charts 107...
Page 124: ...108 IBM 8265 Planning and Site Preparation Guide...
Page 126: ...110 IBM 8265 Planning and Site Preparation Guide...
Page 128: ...112 IBM 8265 Planning and Site Preparation Guide...
Page 130: ...114 IBM 8265 Planning and Site Preparation Guide...
Page 132: ...116 IBM 8265 Planning and Site Preparation Guide...
Page 134: ...118 IBM 8265 Planning and Site Preparation Guide...
Page 136: ...120 IBM 8265 Planning and Site Preparation Guide...
Page 138: ...122 IBM 8265 Planning and Site Preparation Guide...
Page 140: ...124 IBM 8265 Planning and Site Preparation Guide...
Page 142: ...126 IBM 8265 Planning and Site Preparation Guide...
Page 144: ...128 IBM 8265 Planning and Site Preparation Guide...
Page 146: ...130 IBM 8265 Planning and Site Preparation Guide...
Page 148: ...132 IBM 8265 Planning and Site Preparation Guide...
Page 152: ...136 IBM 8265 Planning and Site Preparation Guide...
Page 163: ......