HP 3320A Operating And Service Manual page 165

Frequency
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----"~A
Rev A
TP6
-4.8
Vdc
-15V,
+5V
3
1
L6
1
.82
~----j~------:lfct~~f - -I~~~~fJ
>
220 mV rms
into
50
tl
I
I
C9
IS
R57
IK
-----------------,
-----::-- ---- ------ ---- --l
+SV
R44
56.2K
I
:
VERNIER IN OUT
I
(H IN, LOOT)
I
XA20A
r--".::...~--------------------_4
c
>-t
FROM
~~~~A/'N
X
.---+-----"-1
I:
'-SEE NOTE I
M>+TOXA2PINII
12
I
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I
5,6,7,8,9,11812
I
I
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6
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LS
I:
27
27
:
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">-:--
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CI3
I
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+~'S
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~1
,
fISV~'5>-T--+15V
ilt ~!'
~:~
i
t
12
___J
-,SV,
R41
10K
L2
18
VERNIER
OSCILLATOR
R46
100
- T.6VdC*
-14.9 Vdc
, . . .
~
*"
. - , - - - - - - - - - -....--1
-14.8VdC~
4
-14.2 VdJ:
43
-15 Vdc
H
-24mVdc
.A
H-'-~_2:.,4oA·;;9.::K~
~:
c:
::c~
R45
8.06K
SKHz
R49
ADJUST
6.19K
YI
CR2
,
+5V
,-------------+--JO
r-+--I'-t'IIrt----<o>-¥_t_~~5KO
R54
2K
10KHz
ADJUST
J
R34
10K
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
----t-~:-~-H-Z--
- - - - - - -
22
2MHz
I
P/OA71 REFERENCE
P~A;E~OR-
03320-6650'; - - - - - - - - - - - - - - - -
15 - - - -
-
- - -
~
-
- - - - - -
FROM XA8 PI N 10
l
XA7,
+ SV 2
~IO(,------------------------"
VERNIER IN OUT FROM
~~~?:
PIN X - - l - < ' 4 E _ - - - - : - : : : - , - - - - - - - - - - - - - - - - - - ,
(H IN, LOUr)
XA22A
:
I
+SV,
\SEE NOTE , :
~;f
22
TO XA8 PIN
8~8E_--t_+_--------~r_,.._-+5V2
I
R33
4.99K
R32
12.4K
D/A
CONVERTER
-J'.6Vdc
-/5mVdc
R29
10K
~30
10K
RI3
7.87K
R36
C2
-3.5Vdc
4.99K
82PF
-2/mVdc
*
CI
R37
820~
PF
2K
R3S
4.99K
RI7
IS.8K
-3.6Vdc
-/2mVdc
~
R21
31.6K
-306~c
- 15V 2
-IOmVdc
*
R26
-ISV I
61.9K
*
-/OmVdc
-2.9IAJc
-15V,
R6
13.3K
CRI
R3
4.99K
I
'!" SEE SECTION VIII, 8ACKDATING
COPYRIGHT
19iiBY'""HEWLET~RO
-COMPANY - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - -
I
AI9
I,,,",;
.~'".
00"0-"-51-9-- - - - - - - - -
----h- -
FROM XAlOA PIN 19)- - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - -
XA21A
XA22A
SEE NOTE
I
TO VERNIER POTENTIOMETER
*
XAI-
;CFROM
~~~?iPIN
W
I
- - - - - - - { - - - - F _
H
X_A2~A
- _ - - - - - - - - - - - - -
-
- - - - - - - - - - - - - - - - - - - - -
I
A
I
VERNIER
03320-66~nV -IO./~.;;;'
-6Wc
R61
R
7 4.99K
10K
I
,
I
,
I
I
,
SEE NOTE I
<...
I
FROM
~~~?t
PIN
V-+<
7 f--=L,-,-V,-F.=.2_ _
+--,,-/
XA22A
,
,
,
,
I (
SEE NOTE 2
I
SEE NOTE
'~
FROM
~ ~~?f
PIN
z
--1-( 9
~_-=L,--"V-,-F-=8'-_---1---1"-1
I
XA22A
I
,
I
I
I
I
SEE NOTE
' < .-
i
FROM
~~~?t
PIN 21--1-( 8
~_-=L,--,-V,-F",,4
_ _---1---1-'-1
XA22A
,
SEE f\'OTE I
~
I ,.
I
XA20A
,
'
VFI
FROM XA21A PIN 20----'--( 6
L
R28
XA22A
L
15:~·2K
_
DC
REFERENCE
ADJUST
' R I
R2
R5
II
PAfR6U~E
-+-<
K
~_~~V15I"K_~S",.4"9_K~~~8".2,,S-K-+~
XA3 PIN I
I
I
i ":;:;~,~....
i
L FROM
~~~k~'N 18~
J
~-------<t--JW'--<f---1H
XA21A
I
XA22A
Figure 7-31. Vernier Reference Oscillator A1, Reference Phase Lock
PIO
A7.
7-63/7-64
23

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