Control Blocks; Examples Of Dependency Notation - HP 5334B Service Manual

8-63. Table 8-6 contains examples of dependency notation using the "G" (AND) and "C" (Control) depend-
ency symbols. Refer to the
ANSIIIEEE Std. 91-1984
for a complete explanation of dependency notation.
Table 8-6. Examples of Dependency Notation
8-64. Control Blocks
Symbol
x
z
3
1 2 X
8-65. A
common control block is often used in conjunction with an array of related elements. (See Figure 8-3.)
A control block is the point of placement for inputs and outputs associated with more than one element of the
array, or with no element of the array. Such inputs and outputs will be labeled when appropriate. Refer to
paragraph 8-66 for an example of the use of control blocks.
Description
The input affecting other inputs or outputs with an AND or Control relationship is
labeled with a "G" or a "C", followed by an identifying number. The affected input or
output is labeled with the same number. In this example, "1" is controlled by "GI
".
When the affected input or output already has a functional label (X is used here),
that label will be preceded or followed by the identifying number.
If a particular device has only one affecting input, then the identifying number may
be eliminated and the relationship shown with the identifying letter.
If an input or output is affected by more than one input, then the identifying numbers
of each affecting input will appear in the prefix or subscript, separated by commas.
In this example "X" is controlled by "GI" and "G2".
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