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5<br />
AUXILIARY AC SIGNAL "WAMP" FROM ANALOG BOARD<br />
J1<br />
1 WAMP<br />
5<br />
4<br />
4<br />
3<br />
D D<br />
WAMP_RTN<br />
DC OFFSETS FROM ANALOG BOARD<br />
LT_FRONT_DC<br />
C C<br />
J2<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
CONN 6CRKT<br />
2 34<br />
DC_FILT_RET<br />
LT_CENTER_DC<br />
LT_BACK_DC<br />
B B<br />
J3<br />
BNC<br />
RCA JACK<br />
MAIN RF IN<br />
5<br />
4<br />
3<br />
2<br />
IMPEDANCE MATCHING/LOW PASS FILTER CIRCUIT<br />
1<br />
R4<br />
N/U<br />
MAIN_RF_IN<br />
A A<br />
MAIN_RF_RTN<br />
L7<br />
N/U<br />
C7<br />
N/U<br />
R1<br />
3.9K<br />
R2<br />
3.9K<br />
R3<br />
L8<br />
14<br />
1<br />
3.9K<br />
N/U<br />
L9<br />
7 8<br />
CM CHOKE 97055-98021<br />
C1<br />
680pF<br />
C3<br />
680pF<br />
C5<br />
680pF<br />
L1<br />
1mH<br />
L3<br />
1mH<br />
L5<br />
1mH<br />
C8<br />
3300pF<br />
L10<br />
THE AUXILIARY AC AND DC OFFSETS FROM THE<br />
ANALOG BOARD ARE PLACED ON THE MAIN RF COILS<br />
SECONDARY THROUGH THE CENTER TAP OF EACH X Y<br />
SIDE TO FLOAT ON THE MAIN RF SIGNAL<br />
1<br />
T1<br />
7 8<br />
CENTER TAPPED XFORMER 1:2 97055-98018<br />
8.6uH<br />
C2<br />
680pF<br />
C4<br />
680pF<br />
C6<br />
680pF<br />
L11<br />
N/U<br />
L2<br />
1mH<br />
L10 reduces to 7.96uH in<br />
circuit with cover on PCB<br />
3<br />
L4<br />
1mH<br />
L6<br />
1mH<br />
14<br />
11<br />
C11<br />
2700pF<br />
C10<br />
N/U<br />
2<br />
2<br />
WAV_+<br />
WAV_-<br />
MAIN_RF<br />
DC_F<br />
DC_C<br />
DC_B<br />
MAIN_RF_RTN<br />
BY<br />
DRN R.J.H.<br />
CHK<br />
DSN R.J.H.<br />
ENGR<br />
MFG<br />
1ST USE ENDEAVOR<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
DATE<br />
7/8/03<br />
7/8/03<br />
J4<br />
CONN 10CRKT<br />
PCB Title:<br />
B<br />
Size<br />
PLOTTED:<br />
<strong>Thermo</strong> Finnigan<br />
355 River Oaks Pkwy<br />
San Jose, CA 95134-1991<br />
Low Pass Filter<br />
Software version used = OrCAD rev. 9.2.2.586<br />
CODE IDENT<br />
Friday, July 11, 2003<br />
1<br />
DWG NO<br />
97055-91120<br />
Sheet 2 of 2<br />
1<br />
Rev. B
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