IBM 8270, Инструкция по установке и обслуживанию

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Signal Name
Terminal /PC End
9-Pin Male Switch End
9-Pin Female
TXD
RXD
RTS
CTS
DSR
GND
DCD
DTR
RI 3
2
7
8
6
5
1
4
9 3
2
7
8
6
5
1
4
9
Figure A-6. EIA 232 Null-Modem Cable for Terminal with 9-Pin Connector
Cabling Recommendations
Table A-2 and Table A-3 list the supported cable types.
If you are installing new cabling for data applications, IBM recommends that you
use the following types of cable:
¹
For lobe cabling from the telecommunications closet to the wall outlet, IBM
recommends 150-ohm, STP or four-pair category 5 cable that meets the
international cable standard (ISO/IEC 11801) or the North American cabling
standard (EIA/TIA 568A).
¹
For backbone cabling, IBM recommends 62.5/125-micron, multimode, optical
fiber cable that meets the international cable standard (ISO/IEC 11801) or the
North American cabling standard (EIA/TIA 568A).
Table A-2. Copper Cable Types
Cable Type Impedance
Type 1 and 1A 150 ohms
Type 2 and 2A 150 ohms
Type 8 150 ohms
Type 9 150 ohms
Type 3 100 ohms
Category 3 100 and 120 ohms
Category 4 100 and 120 ohms
Category 5 100 and 120 ohms
Table A-3. Multimode Optical Fiber Cable
Types
Cable Type
65.5/125-micron fiber
50/125-micron fiber
100/140-micron fiber
A-4
8270 Nways LAN Switch Models 600 and 800