Preheat Setting - Agilent Technologies 5517B User Manual

5
Adjustments
P r e h e a t s e t t i n g
NO T E
CA UT I ON
All test point and jumper references are on the A3 Controller/Reference
Board. See
test points.
1
2
3
4
WA RNI NG
5
6
7
8
42
B e c a u s e t h e h e a t e r w i r e r e s i s t a n c e v a r i e s f r o m t u b e t o t u b e , t h e h e a t e r
v o l t a g e m u s t b e a d j u s t e d f o r e a c h n e w t u b e a s s e m b l y . A s i m p l e l o o k u p
t a b l e i s u s e d t o d e t e r m i n e t h e p r o p e r s e t v o l t a g e . D e p e n d i n g o n t h e t y p e
o f t u b e i n y o u r l a s e r h e a d , s e e t a b l e
T h e p r e h e a t s e t t i n g p r o c e d u r e m u s t b e p e r f o r m e d w h e n t h e l a s e r
t u b e i s a t r o o m t e m p e r a t u r e . I f t h e l a s e r h i g h v o l t a g e p o w e r s u p p l y
o r h e a t e r h a v e b e e n o n , a l l o w a t l e a s t t w o h o u r s t o c o o l b e f o r e
p e r f o r m i n g t h i s p r o c e d u r e .
Figure 13 on page 47 for the location of jumpers, switches and
Ensure that the laser head cable is disconnected from the laser head.
Remove the cover.
See "To remove the Front Panel and the Cover"
Identify which board is used in the laser head by reading the board
part number on the board (see figures
If the laser head contains the 05517- 60031 A3 Board, see
page 47 for jumper and testpoint locations. (Note: the p/n 05517- 68031
is actually shown on the sticker.)
If the laser head contains the 05517- 60032 A3 Board, see
page 47 for jumper and testpoint locations. (Note: the p/n 05517- 68032
is actually shown on the sticker.)
If the laser head contains the 05517- 60003 A3 Board see
page 47 for jumper and testpoint locations.
Move the Heater Jumper A3JMP7 to its OFF position.
B e s u r e a l l p o w e r s o u r c e s a r e d i s c o n n e c t e d b e f o r e h a n d l i n g t h e H V
l e a d s a s d e s c r i b e d b e l o w .
Remove the HVPS connector (3- pin with red/black wires) from the A1
Connector board (See
Now, reconnect the laser head cable to the laser head to power it on.
Connect the DMM negative (–) lead to ACOM or
Connect the DMM positive (+) lead to A3TP11.
1 0
13
Figure 15 on page 48).
Agilent 5517B/BL/C/D/DL/FL User's Guide
, o r 1 1 , o r 1 2 .
on page 69.
or 14).
Figure 13
Figure 13
Figure 14
, signal ground.
on
on
on