HP 5384A Service Manual

HP 5384A and HP 5385A
Service
a ~'-X-1--1~;...1...11 H :
Figure 8-13. X (Transmission) Dependency
8-91. C (CONTROL) DEPENDENCY. The symbol
denoting control dependency is the letter C.
8-92. Control inputs are usually used to enable or
disable the data (D, L K, R, or S) inputs of storage
elements. They may take on their internal1 states (be
active) either statically or dynamically. In the latter
case the dynamic input symbol is used as shown in the
third example of Figure 8-14.
a--fc;
b~
:-f~! = :f~J2 ::~s-
c=l_~,2D c=i_~o c~R
,- - -
Note AND relationship of a and b
~
-
a G1
b 1,20
c C2
afjo
b 1.20
c G1
d C2
a~~1 -
& & s
b
c & R
d -
Input c selects which of a or b is stored when d goes low.
Figure 8-14. C (Control) Dependency
8-93. When a Cm input or output stands at its
internal1 state, the inputs affected by Cm have their
normally defined affect on the function of the ele-
ment, i.e., these inputs are enabled. When a Cm input
or output stands at its internal 0 state, the inputs
affected by Cm are disabled and have no effect on the
function of the element.
8-14
8-94. S (SET) and R (RESET) DEPENDENCIES .
The symbol denoting set dependency is the letterS.
The symbol denoting reset dependency is the letter R.
8-95. Set and reset dependencies are used if it is nec-
essary to specify the effect of the combination R=S=1
on a bistable element. Case 1 in Figure 8-15 does not
use S or R dependency.
8-96. When an Sm input is at its internal1 state, out-
puts affected by the Sm input will react, regardless of
the state of an R input, as they normally would react to
the combination S=1, R=O. See cases 2, 4, and 5 in
Figure 8-15.
8-97. When an Rm input is at its internal 1 state,
outputs affected by the Rm input will react, regardless
of the state of an S input, as they normally would react
to the combination S=O, R=1. See cases 3, 4, and 5 in
Figure 8-15.
Case 1
·---n-:
R-L}-a
Case 2
·-F1-:
R-l:_j-a
Case 3
s-n-a
R-1:0-a
Case 4
·-F1-:
R-u-a
Case 5
·---fl-:
R-u-a
s
R
0
1
0 1
1
0
1 1
s R
0 0
0
1
1 0
1 1
s
R
0
0
0
1
1
0
1
1
s R
0
1
0 1
1
0
1
1
s
R
0
0
0
1
1
0
1
1
a
a
nc nc
0 1
1 0
? ?
a
a
nc nc
0 1
1
0
1
0
a a
nc nc
0
1
1
0
0
1
a a
nc nc
0 1
1
0
1 1
a a
nc nc
0
1
1 0
0 0
0 = external 0 state 1 = external 1 state
nc = no change ? = unspecified
Figure 8-15. S (Set) and R (Reset) Dependencies
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HP 5384A Specifications

General

Brand	HP
Model	5384A
Category	Cash Counter
Language	English