HP 8340A Service Manual page 89

• • • .
TP3 TP2 TP4 TPI
-
·
.
. .
H . z . ·· .
· . · ..
. . ..
. . .
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I
I
IODMHZ
er R4
cs
-
1000
C51
R54
51 .1
316
C56
C36
7
IOOOpf
I
fp
fUNE
� POWER SUPPLIES
TP2
Pl-50N)
+20V I
Pl-6-11, 15
TP4
R62
Pl-IC
IN) 100
-IOVF
-IOV
� 100 MHZ BUFFER/AMPLJFJER
CR4
R7
10
+20VF
R55
909
RB c 15
909
C II c 12 R56 R5T C55 c 13
lOOpf 220PF 2370 100 7 220PF 7 220PF
R58
L5 100
1.0
C54 R60
7
22DpF 1000 100
56Pf
c 14 R 12
220 511
@) QUADRUPLER
---- - - -1---- -
Scans by HB9HCA and HB9FSX
+20VP
R28
909
C23 1 1 0
7
220.f
R23
23TO
C22
R21
19.6 220pf
+20VF
C24
�
R6 I
T3 220pf
68, I Cl9
110
15pF
���
C20 1
15PF +20VF
15pf
R IT
R3T
2370
909
R 13 CIT R 16 C31 C32
7
51, I 220PF 100 220.f 15PF
R36 C33
Rl4 Rl8
23TO 15pf
511 2370
C30
220PF
R38
100
C34
R39 R 4 I
� 220.f
2370 51, I
� C35
220pf
@) 40CMHZ AMPLIFIER
C44
6.8pf
C40
1.5
C3
I .9-
'e L 14
15pF
400 0.1 C42
�
R46
MHz IOOOpf
3160
R4T
6810
-IOVF
NOTES:
I, REFER TO THE SERVIC E SECTION
INTRODU CTION
DIAGRAM SY�BOLOGY NOTES,
2, RESISTANCE VALUES
I
SHOWN ARE IN OHMS•
I
CAPACITANCE IN MICROF AR ADS,
I OOMHZ OUT
ANO INDUCTANCE IN
J3
MICROHENRIES UNLESS
OTHERWISE NOTED,
OdBm
· 1 3.TGHz 3, LIO,LI l, AND Ll2 ARE
�� ��
I c PLATED ON THE BOARD,
,.-3dB PAD"'""
4, J l , J 2 , J 3 AND A30WI
� IOOMHZ OUT
R31 C28 LI& CENTER CONDUCTORS
19.6 1.0 W35 ARE ELECTRICALLY
IOOMHz
CONNECTED TO TUE PC
OdllM
. .
R30 R32 NOTE 4 BOARD THROUGH
. TO A39
28T 28T . SOLDERED 24 GAUAGE
• · I PLL 3
FINE WIRES, THEIR
.
� �� UPCONVERfER J2
I · . OUTER CONDUCTORS
.
. � IOOMHZ OUT
.
R34 C29 LIT ARE CONNECTED TO PC
J I
19.6 1,0 A29Wl BOARD GROUND THROUGH
- , I -
lOOMHz
MECHANICAL SCREW
Odl!M
R33 R35 .NOTE 4 , I CONNECTIONS TO THE
. · ·
· T O A.29
287 287 ASSEMBLY COVER PLATE.
REFERENCE
NOTE 3
400MHZ OUT
R68 *
A30WI
CI 0 400 Ll2 46.4
\ 400MHz
I .9- MHZ
-IOdBm
*
15PF
4
��: NOTE TO A3 I
MIN PHASE
J
DETECTOR l
L 15
O. I C45
R49 R5 l
� IOOOpF
3160
511
R50
6810
-IOVF
Figure 8B-6. AJO 100 MHz VCXO, Schematic Diagram
FOR DETAILED SCHEMATIC
8-119/8-120