ESI VideoBridge 2150, Руководство по обслуживанию

Страница: 73 / 332

T h e V i de oB r i dg e makes tw o type s o f z e ro c a l i b ra t i on mea s u r e me n t s
S h o r t-C i r c u i t a nd Open-C i rc u i t - - comb i n e d i n t o one proc e s s :
1 ) F o r z e ro c a l i bra t i on o f t he l ow e s t r a n g e ( 0 ) , the l ow e r d a t a e n t ry
l i ne w i l l c o n ta i n t he me s s a g e
C L O S E UNK NOWN - T H E N P U S H " SGL "
S h or t t h e t e s t l e a d s a n d pu s h < SG L > . T h e me s s a g e w i l l c h a n g e to
CAL I BR AT I NG RANGE O .
2 ) A f t e r c a l i bra t i on o f r a n g e 0 ha s be e n comp l e te d , t h e l ow e r da ta
e n t ry l i n e w i l l c o n t a i n the me s s a g e
OPEN UNKNOWN - T H E N P U S H " SGL "
f o r z e r o c a l i b r a t i o n o f r a n g e s 1 - 4 . O p e n t h e t e s t l e a d s a n d p u s h
•
< S GL > . T h e me s sa g e w i l l cha n g e t o
•
C A L I BRA T I NG RANGE X ,
whe re X r e p r e s e n t s e a c h rema i n i ng rang e .
E a c h m e s s a g e w i l l b e f o l l ow e d b y " O K " o r " E R R OR . " I f " OK " , t h e
V i d e o B r i d g e w i l l a d v a n c e t o t h e n e x t r a n g e . I f " E R R O R , " i t w i l l
con t i nu e t o c a l i b ra t e t he r e ma i n i n g r a n g e s , bu t t h e range t h a t fa i l e d
w i l l n o t b e z e r o- c o r re c te d .
I f a l l r a n g e s c a l i b r a t e d w e r e " OK , " t h e V i d e o B r i d g e w i l l d i s p l a y
" C AL I B " o n t h e b o t tom l i ne o f t he pa rame t e r f i e l d . I f " ERROR " w a s
i nd i ca t e d on a n y r a n g e ,
[ CAL ? J
w i l l a ppea r i n r e v e r s e v i d e o w i t h n o
c o r re c t i on app l i e d t o t he r a n g e t h a t f a i l e d . I f " ERROR " w a s i nd i ca te d
o n a l l r a n g e s , n o me s s a g e w i l l a p p e a r a n d n o c o r r e c t i o n w i l l b e
app l i ed t o a n y r a n g e .
2
-
3 4
e
l
s
l
i 2 1 5 0 / 2 1 6 0 9 / 8 5
•