ESI VideoBridge 2150, Руководство по обслуживанию

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[ OV E R L OA D - - S U PP L Y I NG x x MV ] f o r l ow i m peda n c e de v i c e s
OR
[ OV E R L OAD - - SUPPLY I N G x x MA ] f o r h i g h imped a n c e dev i c e s
W h e r e x x
=
t h e a c t u a l v a l u e o f te s t s i g n a l l . e v e l s u p p l i e d b y t h e
V i de o B r i d g e .
I n a v o l t a g e o v e r l o a d c o n d i t i o n , t h e i n s t r u m e n t w i l l s u p p l y t h e
v o l t a g e a va i l a b l e a t a ma x i m um c u r r e n t o f 1 0 0mA .
I n a c u r r e n t o v e r l o a d c o n d i t i o n , t h e i n s t r u m e n t w i l l s u p p l y t h e
c u r r e n t a va i l a b l e a t a ma x i mum vo l t a g e o f 1 5 0 0 mV .
Mea s u r e me n t s t a k e n a t t he s e redu c e d s i g na l l e ve l s a re v a l i d f o r t ha t
s i g n a l l eve l . To clear the over l oad message , do one o f the fol l ow i ng :
1 ) r e - e n t e r a te s t s i g n a l l e ve l l e s s t han o r e q u a l t o t h e a m o u n t
d i s p l a ye d by t he e rr o r me s s a g e
2 ) f o r a v o l t a g e ove r l oa d , c ha n g e f r om v o l t a g e t o c u r re n t
3 )
f o r a c u r re n t ove r l oa d , c ha n g e f rom c u r re n t t o v o l t a g e .
N O T E :
To ma i n ta i n m e a s u reme n t a c cu r a c y , te s t- l e a d o r te s t­
f i x t u r e ca l i bra t i o n m u s t be pe r f o rmed a f t e r c ha n g i ng t o a n
u n ca l i bra ted te s t f re q u e ncy/ t e s t s i g n a l c om b i na t i on .
2 - 5 2
e l s l i 2 1 5 0 / 2 1 6 0 5 /8 5
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