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Twinax cabling is used by the IBM 5250 family of terminals and printers to
connect to the System/34, /36, /38, and AS/400 midrange computers
("minicomputers").
Parameters:
- screw-shell connectors (2 pins + shield, keyed)
- shielded 110 Ω twisted pair
- half-duplex balanced transmission
- 1 Mbit/s transfer-rate
- up to 7 devices per connection (address 0 – 6; can be non-sequential)
- termination required, most T-connectors are auto-terminating
Adapter cards:
5250 Emulation Adapter/A
S36/38 Workstation Emulation Adapter
Local Twinax Adapter
Documentation:
Twinaxial' Cabling Troubleshooting Guide (SY31-0703-0)
Using the IBM System 36/38 Emulation Adapter Card As a Time Source (TDB)
Twinaxial Auto-Termination Cable Assembly (TDB)
Improved Surge Supression Circuit for Twinaxial Cable (TDB)
Twinax Connector Pinout
Twinax Cable Adapters (from David Beem)
Many later terminals and terminal cards use DB15 male -or- female connector and the appropriate adapter.
DB25? to Twinax adapter + T connector |
DB25 to 2x Twinax attachment cable
for InfoWindow (II?) Terminal |
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