Specifications

R4-11-4G Decision Charts 3-1

Chapter 3

Decision Charts

The decision charts in this chapter help the system designer and engineering

personnel select equipment to meet the specific customer needs. The charts

also help the systems engineer select compatible equipment for new and

existing systems. When you are selecting equipment from the decision

charts, the compatibility charts, options, and accessories charts for the

associated equipment are on the same page. Chapter 4, “Equipment

Descriptions,” describes them in detail.

To use the charts, select one item in each column or block. Moving to the

right, select one item in the next column or block. AND bars (vertical)

separate major equipment sections, and denote required equipment on either

side in configuring a complete system. OR bars (horizontal) separate

alternate equipment within a section. Box extensions on the bottom of

equipment boxes denote required options. The use of the vertical and

horizontal bars is reflected in the Core System Configurations box (fig. 3-1).

Box extensions on the left or right of an equipment box denote the most

common choices in required interface options. Large gray boxes denote a

major system component made up of several items. Specific notes define

what is required for a complete item.

The decision charts show the core system set. With the use of simple AND

and OR barriers, the layout shows the required items and those items that

might be substituted. The core system has three possible configurations:

ABE, ACE, and ADE (fig. 3-1). The choices of B, C, and D are the only

variables in the system shown. The AND barriers show that you must choose

from the alternatives of B, C, or D. Options and accessories to the units below

expand the range of choices for additional feature sets, but not of the core

unit set.

Figure 3-1. Core System Configurations

AND

CEA

AND