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Configuration Planning
System Planning
Site Preparation
To plan the configuration of the 3274 and the attached units, use the appropriate (U.S.,
Americas/Far East, or Europe/Middle East/Africa) Configuration Tables in IBM 3270
Information Display System: Configurator, GA27-2849. These tables will help you
determine which feature codes are needed to:
• Connect the:
a. 3274 Model lA, lB, or lD to a host system through a local channel.
b. 3274 ModellC or SIC to a host system through communication facilities.
• Provide the required quantity of 3274 terminal adapters.
• Provide feature compatibility among the individual units.
The tables also indicate necessary features, optional features, prerequisite features, and
features that cannot coexist.
The following tasks should be planned so that they can be accomplished in a timely
manner:
• Site preparation for the 3274 clusters
• Communication facilities preparation for 3274 Models 1 C and 51 C
• Host system channel preparation for 3274 Models 1 A, IB, and lD
• Programming support preparation
• 3274 pre-delivery planning activities
I t may be useful to designate to a person in your organization the responsibility of
ensuring that all these tasks are planned. The Planning Checklist in Appendix A of this
guide contains the events, in a suggested sequence, that should be planned in order to
install a 3274 Model lA, IB, or lD and/or set up a 3274 Model lC or 5IC and the
attached units for the first time;
it
therefore contains more detail than is required for
adding to or replacing an existing display/printer system. In either case, each event should
be carefully considered so that installing the 3274 Model lA, lB, or lD and/or setting up
the 3274 Models 1 C and 51 C and the attached units is problem-free.
The specifications for all physical requirements of the 3274,3278,3279,3287, and 3289
units are given in IBM 3270 Information Display System: Installation Manual - Physical
Planning, GA27-2787.
This guide will help you provide compatibility between these units and the following:
• Work space considerations
• Electrical requirements
• Cable requirements and installation
• Power cord plug requirements
• Environmental requirements
Communication Services (3274 Models lC, 51C)
1-2
Arrangements need to be made for the installation of the communication facilities
between the 3274 Models lC, SIC and the host communication unit/adapter. There must
be compatibility between Models 1 C and 51 C, the modems, the communication line, and
the communication unit/adapter; for example, line speed, duplex or half-duplex facilities,
and NRZ (non-return to zero) or
NRZI
(non-return to zero inverted).
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