IBM 3270 Quick Reference

Cable Length Limits
Table 2 shows the length limits of signal cable.
Table 2. Cable Length Limits
Adapter Adapter
No
Minimum
Maximum
Cable Type Both Ends One End Adapter Length Length
IBM 610m 1000m 1500 m None NA
Cabling
(2000 ft) (3280
ft) (4920 ft)
System
Type 1
IBM 406m 667m 1015 m
None
NA
Cabling (1333 ft)
(2186 ft)
(3333 ft)
System
Type 9
Coaxial
NAl
NAl NAl
None 1500 m
RG62A/U
(4920 ft)
Telephone
Yes2
NA2
NA2
30m 275 m
Twisted-
(100 ft)3
(900 ft)
Pair Type 3
1 The coaxial cable length cannot exceed the maximum limit.
2 The telephone twisted-pair type 3 cable length must be between the minimum and
maximum lengths. IBM/ROLM 3270 coax-to-twisted-pair adapters must be used.
3
If used with the IBM 3299 Model 3, the minimum length is 0.
IBM Signal Cable Publications
6
• A Building Planning Guide for Communication Wiring,
G320-8059
• IBM Cabling System Catalog, G570-2040
• IBM Cabling System Planning and Installation Guide,
GA27-3361
• IBM/ROLM 3270 Coax-to-Twisted-Pair Adapter Planning
and Installation Guide,
GA27-3722
• IBM 3270 Information Display System: Installation Manual -
Physical Planning,
GA27-2787
• Installation and Assembly of Coaxial Cable and Accessories,
GA27-2805
• Using the IBM Cabling System with Communication Products,
GA27-3620.
.. ,
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IBM 3270 Specifications

General

Brand	IBM
Model	3270
Category	Desktop
Language	English