Block Diagram Descriptions
Theory of Operation
3Ć14

Degauss

&'1 !'0!3'2 0#+-4#1 +%,#2'! $'#*"1 $0-+ 2&# !-*-0 12##* .#0230# %0'**#
&#1# +%,#2'! $'#*"1 0# ',"3!#" 2 #!& .-5#09-, 7 +%,#2'!1-30!#1
&# #%311 !'0!3'2 .0-"3!#1 , #6.-,#,2'**7 "#!7',% 1',# 54# 5'2& 
$0#/3#,!7 -$ ..0-6'+2#*7  )8 &'1 54#$-0+ '1 ..*'#" 2- 2&# "#9
%311 !-'*1 2&2 0# *-!2#" -, -2& 1'"#1 -$ 2&# &# "#!7#"-1!'**9
2'-, 2&0-3%& 2&# !-'*1 !31#1 +%,#2'! $'#*" 2- # ',"3!#" ', 2&#  12##*
.#0230# %0'**# &'1 +%,#2'! $'#*" 12302#1 2&# 12##* ," 2&#, $-0!#1 2&#
12-0#" +%,#2'! $'#*" "-5, 2- 8#0- 1 2&# 12##* '1 "0'4#, 0-3," '21 &712#0#9
1'1 !304#

Beam Current Limit

&'1 !'0!3'2 *'+'21 2&# 4#0%# .-5#0 2- 2&#  2- *#11 2&, , +.*'9
$'#0 !'0!3'2 !-+.0#1 2&# 13+ -$ 2&# ,-"# !300#,2 ," 2&#  "(3129
+#,2 !300#,2 2-  0#$#0#,!# !300#,2 -$  + $ 2&# 13+ -$ 2&# 25-
!300#,21 #6!##"1 2&# 0#$#0#,!# !300#,2 2&#, 2&# 2&0## 4'"#- +.*'$'#01 -,
2&#   -!)#2 -0" 0# "'1 *#"

Grid Bias

&'1 !'0!3'2 .0-4'"#1  -$ %0'" '1 2- 2&#   -!)#2 -0" 2
.-5#09-$$2&# %0'" '1 13..*'#" 5'2&   3,2'* 2&# $-!31 !'0!3'2 "'1!&0%#1 
&'%& 4-*2%# &'1 .0#4#,21 0'%&2 1.-2 $0-+ ..#0',% 2 2&# !#,2#0 -$ 2&#
1!0##, 2 .-5#09-$$
&#   ,"  0-,29,#*'0!3'2 -0"11.#!'$'!**7 !-,1'12-$ 2&#
$-**-5',% -0"1
 -3!&,#* 11#+ *7
 0-,2 ,#*-,20-* -0"
 0-,2 ,#*322-, -0"

TouchPanel, Major Menu Keys, and Menu Status LEDs

&#1#2&0## $3,!2'-,1 ',2#0$!# 2- 2&# 6#!32'4# .0-!#11-0 2&0-3%&  %#,#0*
.30.-1# .0-%0++ *# )#7 -0" ," "'1.*7 !-,20-**#0  -, 2&#  0-,2
,#*-,20-**#0 -0"
&# )#7 -0" $3,!2'-, -$ 2&#  &,"*#1 2&# 2-3!& +20'6 ," &0" )#71
&# "'1.*7 $3,!2'-, "0'4#1 2&# +#,3  *'%&2 01
A9, A10, and A11Front Panel Boards