Introduction; Safety Considerations - Agilent Technologies 5517B User Manual

5
Adjustments
I n t r o d u c t i o n
This chapter describes adjustments and checks required to return the laser
head to peak operating capabilities when repairs have been made or
performance problems exist. Included in this chapter are the test
equipment required, equipment setups, and procedures to perform the
adjustments. The adjustments apply to all laser heads.
For all other laser heads, the type of A3 Controller/Reference Board
installed depends on the age of the laser head. To identify the type
installed in your laser head, refer to
S a f e t y C o n s i d e r a t i o n s
WA RNI NG
WA RNI NG
CA UT I ON
40
M a i n t e n a n c e d e s c r i b e d h e r e i n i s p e r f o r m e d w i t h p o w e r s u p p l i e d t o
t h e e q u i p m e n t a n d w i t h t h e p r o t e c t i v e c o v e r s r e m o v e d . S u c h
m a i n t e n a n c e s h o u l d b e p e r f o r m e d o n l y b y s e r v i c e - t r a i n e d p e r s o n n e l
w h o a r e a w a r e o f t h e h a z a r d s i n v o l v e d ( f o r e x a m p l e , f i r e a n d
e l e c t r i c s h o c k ) . W h e r e m a i n t e n a n c e c a n b e p e r f o r m e d w i t h o u t
p o w e r a p p l i e d , t h e p o w e r t o t h e e q u i p m e n t s h o u l d b e r e m o v e d .
B e f o r e a n y r e p a i r i s c o m p l e t e d , e n s u r e t h a t a l l s a f e t y f e a t u r e s a r e
i n t a c t a n d f u n c t i o n i n g , a n d t h a t a l l n e c e s s a r y p a r t s a r e c o n n e c t e d
t o t h e i r p r o t e c t i v e g r o u n d i n g m e a n s .
F r o m 1 . 2 k i l o v o l t s t o 1 2 k i l o v o l t s D C i s p r e s e n t o n t h e a n o d e o f t h e
l a s e r t u b e i n t h e l a s e r h e a d . E x e r c i s e e x t r e m e c a u t i o n w h e n
w o r k i n g i n s i d e t h e i n s t r u m e n t . T h e h i g h v o l t a g e c o u l d c a u s e
s e r i o u s p e r s o n a l i n j u r y i f c o n t a c t e d . T h e f o l l o w i n g a d j u s t m e n t s
s h o u l d b e p e r f o r m e d b y s e r v i c e - t r a i n e d p e r s o n n e l .
A l w a y s t u r n o f f , o r d i s c o n n e c t , t h e l a s e r h e a d p o w e r s u p p l i e s
b e f o r e c o n n e c t i n g o r d i s c o n n e c t i n g t h e l a s e r h e a d c a b l e t o o r f r o m
t h e l a s e r h e a d r e a r p a n e l .
Figure 8 on page 27.
Agilent 5517B/BL/C/D/DL/FL User's Guide