IBM 3270 manual Signal Cable Considerations

Signal Cable Considerations

When a 3270 Card is attached to a host system, consid following practices for installing signal cable:

ŸInstallation

– Cable runs (indoor and outdoor)

–Types of signal cables and specifications (coaxial twisted-pair)

–	Signal	cable and power line separation
–	Cable	labeling and testing

ŸCable accessories.

Outdoor runs require additional installation guidelines, inc lightning protection. For more information, refer to the si publications listed in “Other Related Publications” on pag

Cable

Requirements

and

Card

Options

Table 1

shows

the

card

requirements

for various

signal c

and

IBM

products.

To

order

these

cables,

contact

your

Authorized

Dealer

or

IBM

Marketing

Representative.

Table

1.

Cable Requirements

150

ohm

150

ohm

Shielded

Shielded

Telephone

IBM

Coaxial

Twisted-Pair

Twisted-Pair

Twisted-Pair

Model

RG62A/U

(22

AWG)

1

(26

AWG)

1

Type

3

3270

Cards

BNC

Yes

(notes

1 Yes

(notes 1 Yes

(notes

2

and

and

3)

and

3)

5)

3299

Model

BNC

Yes

(note

1)

Yes

(note

3)

Yes

(note

2)

1

or

3274

3299

Model

BNC

Yes

(note

1)

Yes

(note

1)

Yes

(note

5)

2

or

3174

3299

Model

NA

NA

NA

Yes

(note 4)

3

NA

=

Not

applicable

1

Dual

Purpose

Connector

(DPC)

2

IBM/ROLM

Coax-to-Twisted-Pair

Adapter

(CTPA)

3

IBM Cabling

System

red

balun

4

Modular jack

connector

5

Dual

Purpose

Connector

-

T3

(DPC-T3)

2 3270 Emulation PCI Adapter User’s Guide