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P-11,<br />
5<br />
5<br />
4<br />
4<br />
3<br />
D D<br />
P-4,11,15,<br />
C C<br />
CUR_LIM_SUM_NODE<br />
PRI_RF_AMPS_RDBK P-15,<br />
PRI_RF_AMPS_RDBK_REF P-15,<br />
B B<br />
RF_MODULATION<br />
RF_AMPLITUDE_CMD<br />
A A<br />
P-5,<br />
P-5,<br />
PRIMARY (+36V) CURRENT MEASUREMENT AND LIMIT<br />
CURRENT_SENSE_R<br />
RANGE:<br />
+5V --> -3V<br />
OFF ON<br />
P-11,<br />
R-F_MOD_DRIVE<br />
+13V_GC -13V_GC<br />
.01UF<br />
OCT_RF_SET<br />
OCT_RF_SET_REF<br />
-13V_GC<br />
+13V_GC<br />
1<br />
2<br />
+36V_RET<br />
C57<br />
-13V_GC<br />
D21<br />
3<br />
MMBD4148SE<br />
R106<br />
4.99K<br />
NORMALLY OFF<br />
1<br />
2<br />
3<br />
-13V_GC<br />
U6A<br />
1 -<br />
+<br />
AD712JR +<br />
U6A<br />
-<br />
AD712JR<br />
+13V_GC<br />
R22<br />
10K<br />
10K<br />
R116<br />
R113<br />
4.99K<br />
Q1<br />
4<br />
8<br />
C5<br />
.01UF<br />
GCGND<br />
MMBT4401LT1<br />
TL27<br />
TL29<br />
R105<br />
20.0K<br />
+13V_GC<br />
GCGND<br />
TL30<br />
"GCGND"<br />
GCGND<br />
-13V_GC<br />
2<br />
3<br />
D20<br />
MMBD4148SE<br />
R123<br />
10K<br />
3<br />
GCGND<br />
6<br />
5<br />
4<br />
8<br />
GC_MOD_REF<br />
R19<br />
C SOT-23<br />
E B<br />
2<br />
100K<br />
+13V_GC<br />
3<br />
2<br />
-13V_GC<br />
-13V_GC<br />
R12<br />
4.99K<br />
R103<br />
100K<br />
0603<br />
1<br />
R110<br />
53.6K<br />
R16<br />
10K<br />
R114<br />
10K<br />
R17<br />
10K<br />
-<br />
+<br />
R21<br />
10K<br />
7<br />
4 8<br />
R104<br />
39.2K<br />
0603<br />
U6B<br />
2<br />
1<br />
-<br />
+<br />
3<br />
GCGND<br />
AD712JR<br />
AD712JR<br />
1<br />
U5A<br />
100K R14<br />
.01UF C52<br />
R13<br />
562<br />
D1<br />
MMBD4148SE<br />
R107<br />
15K<br />
0603<br />
TL28<br />
P-3,<br />
GCGND<br />
R6<br />
0.0<br />
+13V_GC<br />
C54<br />
N/U<br />
1.33MA<br />
GC_MOD_REF<br />
1<br />
1<br />
TP4<br />
"GC_MOD_REF"<br />
1<br />
1<br />
GC_MOD_REF<br />
TP2<br />
"RF CURRENT"<br />
GCGND<br />
1<br />
1<br />
1 1<br />
"GCGND"<br />
TP1<br />
/TOP_COVER_RF_HV_ON<br />
1 V / 100 ma<br />
-13V_GC<br />
AN OUT OF TUNE CONDITION MAY<br />
CAUSE DRIVE TRANSISTOR FAILURE.<br />
THIS MOVING CURRENT LIMIT<br />
ALLOWS "SLIGHTLY" MORE CURRENT<br />
THAN REQUIRED FOR THE MEASURED<br />
RF LEVEL.<br />
+5V=SHUT DOWN<br />
0V=RUN<br />
0V -> +10v<br />
TP3<br />
"R-F AMP CMD"<br />
C55<br />
.01UF<br />
10K R15<br />
0.01 50V C56<br />
R109<br />
100K<br />
4<br />
7 -<br />
+<br />
AD712JR +<br />
-<br />
AD712JR<br />
U5B<br />
8<br />
6<br />
5<br />
GCGND<br />
R255<br />
4.99K<br />
CONTROL LOOP<br />
SUMMING POINT<br />
& INTEGRATOR<br />
GROUND PLANE REFERENCE<br />
TO GC_MOD_REF TRACE.<br />
R122<br />
GCGND<br />
P-4,10,11,13, 0.0<br />
GCGND GC_MOD_REF<br />
3<br />
2<br />
DET_RF<br />
(DET_RF)<br />
0V -> +10V<br />
DET_RF<br />
(DET_RF)<br />
-13V_GC<br />
R-F AMPLITUDE CONTROL<br />
GCGND<br />
+13V_GC<br />
RF_LEVEL_RDBK P-15,<br />
RF_LEVEL_RDBK_REF P-15,<br />
0V -> +10v DET_RF<br />
GCGND<br />
U32B<br />
(DET_RF)<br />
-13V_GC<br />
7 -<br />
+<br />
AD712JR<br />
6<br />
5 GC_MOD_REF<br />
RF_MODULATION<br />
C43<br />
.01UF<br />
RF_MOD_RDBK P-15,<br />
RF_MOD_RDBK_REF P-15,<br />
+<br />
R20<br />
90.9K<br />
C132<br />
TP16<br />
0.1 50V<br />
"RF LEVEL"<br />
D14<br />
1<br />
3<br />
2<br />
R98<br />
10K<br />
C142<br />
.01UF<br />
U33A<br />
2 - 1<br />
3 +<br />
AD712JR<br />
C124 R91 "GCGND"<br />
MMBD4148SE<br />
C125<br />
0.1 50V<br />
0.0 TP13<br />
0.1 50V<br />
R95<br />
TP14<br />
10K<br />
"RF MOD"<br />
U32B<br />
R243<br />
-<br />
AD712JR<br />
10K<br />
R239<br />
10K<br />
6<br />
5<br />
-<br />
+<br />
AD712JR<br />
U33B<br />
7<br />
R92<br />
0.0<br />
0V -> -10v<br />
+13V_GC<br />
R-F AMPLITUDE MEASUREMENT<br />
P-11,<br />
+13V_GC<br />
P-10,11,13,<br />
FROM R-F GENERATOR<br />
RF_DET_I+<br />
-13V_GC<br />
-13V_GC<br />
+13V_GC<br />
P-4,10,11,13, GCGND<br />
-13V_GC<br />
P-10,11,13,<br />
10K R238<br />
GCGND<br />
GCGND<br />
-13V_GC<br />
-0.65V<br />
P-4,10,11,13,<br />
GCGND<br />
GCGND = GENERATOR CONTROL GROUND PLANE<br />
4<br />
8<br />
C42<br />
.01UF<br />
C117<br />
.01UF<br />
DO NOT USE<br />
4<br />
CR2C<br />
MA121CT<br />
3<br />
4 3<br />
CR1C<br />
MA121CT<br />
-0.65V<br />
A<br />
3<br />
2<br />
4 8<br />
6<br />
5<br />
-<br />
+<br />
4<br />
-<br />
+<br />
8<br />
-13V_GC<br />
2<br />
+13V_GC<br />
1<br />
-0.65V<br />
U28A<br />
AD712JR<br />
C116 .01UF<br />
1K<br />
R90<br />
0805<br />
U28B<br />
7<br />
AD712JR<br />
B<br />
R247<br />
10K<br />
10K<br />
R96<br />
R244<br />
10K<br />
4<br />
8<br />
4<br />
8<br />
+13V_GC<br />
GCGND<br />
A<br />
B<br />
+13V_GC -13V_GC<br />
.01UF<br />
GC_MOD_REF<br />
GCGND<br />
-13V_GC<br />
+13V_GC<br />
1<br />
DET_RF<br />
(DET_RF)<br />
+13V_GC -13V_GC<br />
.01UF<br />
<strong>Thermo</strong> 355 River Oaks Pkwy, San Jose, CA 95134-1991<br />
ELECTRON CORPORATION<br />
Title<br />
Size Document Number Rev<br />
B<br />
Bias the Current Rectification<br />
Diodes to near-on condition<br />
via this identical diode.<br />
Then remove the<br />
bias voltage from<br />
the measurement.<br />
C143<br />
10K R97<br />
U32A<br />
AD712JR<br />
2<br />
3<br />
4<br />
-<br />
+<br />
8<br />
1<br />
1<br />
1<br />
1 1<br />
1<br />
1<br />
TP20<br />
"DET_RF"<br />
1<br />
1<br />
C126<br />
SCH, TOP COVER BOARD<br />
0V -> +10V<br />
R-F GENERATOR CONTROL<br />
97055-91040 D<br />
Date: Wednesday, July 27, 2005<br />
Sheet 12 of 17<br />
1
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