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M o d e l 5363 B
S e r v i c e
8 - 1 2 2 .
The X-V Exte r n a l P ro g ra m u ses states 63 t h ro u g h 1 00 of the f l o w c h a rt . T h i s
s u b ro u t i n e i s s pec i f i c a l l y d e s i g ne d f o r rem ote p r o g ra m m i n g b y o t h e r H P p r o d u c t s . T h e X a n d
q u a l i f i e rs a re d et e r m i n e d b y t h e rea r p a n e l B N C j a c k s a n d ove rri d e t h u m b w h e e l ' o r H P- I B
Y
c o n t rol o f P r o b e , S l o pe , a n d Leve l . T h e t a b l e i n
rela t i o n s h i p t o t h e e nf o r c e d f i xe d Sta rt a n d S t o p selec t i o n m o d e s f o r t h e p r o b e s .
8 - 1 2 3 .
T h e Ca l i b ra t i o n s u b ro u t i n e beg i n s b y t u rn i n g off f o u r c h a n n e l i n d i ca t o r l i g h t s a t
states 1 6 1 t h ro u g h 1 64 . States 1 65 a n d 1 66 ze ro t h e A 2 D A C a sse m b l y . States 1 67 t h ro u g h 1 69
fi rst reset t h e ca l i b ra t i o n c o u n t e rs , t h e n c l o c k e a c h o n c e to g e t t h e c a l i b ra t i o n D A C s s l i g h t l y
o f f ze ro v o l t s . States 1 70 t h ro u g h 1 73 l o a d t h e c o m b i n ed v o l t a g e f rom t h e A2 D A C , 0 . 0 0 v o l t s ·
a n d t h e offset ca l i b ra t i o n D A C - 1 00 mV i n to t h e sta rt c h a n n e l refe re n c e . State 1 74 i n s u re s
t h e sta rt c h a n n e l c o m p a ra t o r h a s n o t y e t t ri g g e red .
8 - 1 2 4 .
States 1 7 5 th ro u g h 1 79 a n d 2 1 0 th ro u g h 2 1 2 p e rf o r m t h e sta
ro u t i n e l o o p s a ro u n d , i n c re m e n t i n g t h e sta rt ca l i b ra t i o n D A C o n e step w i t h e a c h p a s s . E a c h
t i m e a n e w v o l t a g e i s l oa d e d , t h e sta rt c h a n n e l c o m pa ra t o r i s e xa m i n ed . T h i s ro u t i n e w i l l
c o n t i n u e u n t i l t h e t i m e r r u n s o u t o r t h e c o m p a ra t o r t ri g g e rs . T h e v o l t a g e p re se n t w h e n t h e
c o m pa ra t o r t r i g g e rs i s reta i n e d a s t h e offset for the sta rt c h a n n e l .
8 - 1 2 5 .
State 1 80 c h e c k s t h e stat u s o f t h e R M TCAL re m o t e c a l i b ra t i o n l i n e . States 1 8 1 a n d
1 82 ve ri f y t h a t t h e f r o n t p a n e l l e ve l s w i t c h i s sti l l a c t i vated . T h i s i n s u res t h a t t h e p r o b e t i p w a s
g ro u n d e d t h ro u g h o ut t h e ca l i b ra t i o n a n d t h e offset va l ue i s a c c u rate.
8 - 1 2 6 .
States 1 83 t h ro u g h 1 96 pe rf o r m t h e c a l i b ra t i o n a s p r e vi o u s l y d e sc r i b e d f o r t h e stop
c h a n n e l c o m p a ra t o r . States 1 97 t h ro u g h 200 t u r n o n all f o u r c h a n n e l i n d i c a t o r l i g h t s s i g n a l i n g
c a l i b ra t i o n i s c o m pl ete . States 2 0 1 t h ro u g h 204 k e e p t h e l i g h t s o n u n t i l t h e f ro n t p a n e l s w i t c h i s
re lea sed . States 205 t h ro u g h 209 t u rn o u t l i g h t s a n d ret u r n t o t h e m a i n pro g ra m .
8 - 1 2 7 .
T h e c a l i b ra t i o n e rror s u b ro u t i n e w i l l prov i d e a v i s u a l i n d i c a t i o n o f f l a sh i n g c h a n n e l
l i g hts i n l oc a l o pe rat i o n , i f a n y o f t h e f o l l o w i n g ca l i b ra t i o n e rro rs occ u r:
1 .
C h a n n e l co m pa rato r t ri g g e rs before t h e ca l i b ra t i o n b e g i n s .
2 .
C h a n n e l c o m p a ra t o r fa i l s to t ri g g e r w i t h i n o n e t i m e r c yc l e .
3 .
F r o n t p a n e l ca l i b ra t i o n l e ve l s w i t c h i s r e l e a sed before ca l i b ra t i o n i s c o m p l eted .
8- 1 28 .
State 2 1 7 d et e r m i n es t h e s t a t u s of R E M O T E . I f R E M O T E i s t ru e , states 2 4 5 a n d 246
c l e a r R M T C A L and set the E R R O R F L AG o n t h e A5 H P- I B a sse m b l y .
8 - 1 2 9 .
States 2 1 8 t h ro u g h 223 t u r n o n t h e f o u r c h a n n e l l i g h ts a n d k ee p t h e m o n u n t i I t h e f r o n t
p a n e l ca l i b ra t i o n l e ve l s w i tc h i s r e l e a se d . States 224 t h ro u g h 2 2 8 sta rt t h e ti m e r c yc l e a n d t u r n
o n the l i g h t s . States 229 th ro u g h 232 a n d states 2 4 1 a n d 242 l o o p a ro u n d , c o n t i n ua I l y c h e c k i n g
t h e f r o n t p a n e l l e ve l s w i t c h u n t i l i t i s pre ssed o r t h e t i m e r c yc l e c o m p l e t e s . State s 233 t h ro u g h
2 4 0 t u rn off a l l l i g h t s , a n d a g a i n l o o k f o r e i t h e r a re m ote o r l o c a l c a l i b ra t i o n req u e s t . O n l y i f a
l e vel c a l i b ra t i o n i s req u e sted w i l l t h e Ca l i b ra t i o n E r r o r s u b ro u t i n e ret u rn to t h e m a i n p r o g ra m .
O t h e rw i se , t h e s u b ro u t i n e w i l l c o n t i n u e t o l o o p , f l a s h i n g t h e l i g h t s o n a n d off.
8 - 1 30 .
T h e Tri g g e r L i g h t s u b ro u t i n e e xa m i n e s q u a l i f i e rs a n d o p e rates t h e f o u r i n d i c a t o r
l i g h t s . T h e s u b ro u t i n e a l l o ws t h e l i g h ts to i d e n t i f y t h e p r o b e s e l ected for Sta rt a n d S t o p
C h a n n e l s .
8-30
i n d i cates t h e X a n d
Figure 3 - 2
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c h a n n e l ca l i b rat i o n . t h e
q u a l i f i e r
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