Agilent Technologies 8453 Operator's Manual page 145

Figure 8
Theory of Operation
Spectrophotometer Lamp Supply (SLS) Board
Spectrophotometer Lamp Supply (SLS)
Board
SLS Board
S L S
s a f e t y l i g h t
s w i t c h e s
s h u t d o w n
c o n t r o l b u s
c o n t r o l b u s
d e u t e r i u n l a m p
f i l a m e n t c o n t r o l
d e u t e r i u m l a m p
c u r r e n t c o n t r o l
d e u t e r i u m
l a m p s e n s e
t u n g s t e n l a m p
v o l t a g e c o n t r o l
d i a g n o s t i c
A / D c o n v e r t e r
t u n g s t e n l a m p
s e n s e
f i l a m e n t
a n o d e
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