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M o d e l 5363 8
S e rv i c e
Ta ble 8-2. 53638 Sig n a ture A na lyzer Hook- Up Procedure ( Co n tinued)
AS H P - I B I N T ERFACE
a
D i s c o n n e c t t h e 5 3 6 3 B p o w e r c o rd . a n d r e m o v e c a b i net c o v e r .
b .
R e m ove A 5 H P- I B I n terface a s s e m b l y a n d r e i n sta l l o n e x t e n d e r b o a r d .
The l o w e r h e x n u t s t u d a n d H P - I B a d d ress s w i t c h m u st be rem oved to
extract A 5 .
c .
S e t H P - I B a d d ress s w i t c h to 0000000 a n d re i n s t a l l i n A 5 a s se m b l y .
U s i n g a n I C c l i p o n A 5 U 8 , c o n n e c t t h e 5004A test p o d i n p u t s a s f o l l o w s :
d .
STA R T
S T O P
C L O C K
G N D
P l ac e a J u m p e r w i re from A 5 U 8 p i n 9 t o p i n 1 6 . T h i s d i sa b l e s the "i u m p " c a pa b i l i t y a n d f o rces t h e state
e .
c o u n te rs to i n c r e m e n t s e q u e n t i a l l y t h r o u g h a l l R O M a d d resses. D i s r e g a r d any front pa n e l l i g h t s .
' f .
P l a c e a j u m p e r w i re f r o m A1 T P 1 to A1 TP2
m ot he r bo a rd c l o c k , s to p p i n g t h e a s y n c h ron o u s d a t a to t h e A S C I I b oa r d a n d a l l ow s m o re s t a b l e
s i g n at u re s .
' g .
C o n n e c t a j u m pe r a c ro s s A1 C 1 0 t o p u t t h e A 1 b o a rd state m a c h i n e i n to i t s reset state .
h .
S e t 5004A c o n t r o l s i n step " e " o f A 1 M ot h e rb o a r d h o o k - u p p roce d u re .
S e t 536 3 B c o n t r o l s i n s t e p " f " of A 1 M ot h e r b o a r d h o o k - u p p ro ce d u re .
C o n n ec t p o w e r t o 5363 B .
k
'
.
P u l s e h i g h p i n
c o n d i t i o n b y c o n f i r m i n g that p i n s 3 , 4, 5 , a n d 6 o f A 1 U20 a re at a l o g i c
' I
P u l se l ow p i n 1 of A 5 U 1 6 several t i m e s to reset t h e S R f l i p -f l o p . C h e c k f o r t h i s reset c o n d i t i o n b y
c o n f i r m i n g t h a t p i n s 3 a n d 9 of A 5 U 1 2 are at a l o g i c 1 . a n d p i n 2 i s a t a l o g i c 0
m .
F o r e a c h s i g n at u re , p re s s R ES ET o n S i g n a t u re A n a l yz e r p ro b e to i n s u re s ta b i l it y .
A n e x t e n d e r b o a r d , PIN 5060-004 9 , c a n b e m o d i f i ed as s h o w n a b o ve to
e l i m i nate s t e p s f , g, k , I of the N e w S i g n a t u re A n a l y s i s Proc ed u re s f o r the
H P- I B Board . T h i S m o d i f i c a t i o n s e t s a l l o f t h e A 5 i n p u t states to th e i r
p ro p e r v a l u e s o n
S i g n at u res a s t h e A 5 S i g n a t u re A n a l y s i s t a b l e - l o cated o n p a g e .
Fig ure
' See
8 - 8 " E x t e n d e r Board M o d i f i c a t i o n "
8-34
NOTE
. .
7
of A 1 U20 w i t h a l o g i c p u l s e r , several t i m e s to reset t h i s reg i st e r . C h e c k f o r t h e reset
NOTE
i n s t r u m e n t p o w e r- u p . t h u s p r o v i d i n g t h e s a m e
U 8 p i n 1 5
U 8 p i n 1 5
U 8 p i n 2
. . . . . . . . . . U8 p i n 8
l ocated b e t w e e n R 1 30 a n d U 1 0
O .
Th i s h a l ts t h e
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