HP 3320A Operating And Service Manual page 143

Frequency
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GROUND PINS
1,3,4,5,6,
7,8,9,10,12.
14
PHASE
COMPARATOR
---------------------------------l
CR4
~
£:!
>
z
z
---z---
0:
0:
0:
5
.. .. .. .. .. ..
. .
'"
0
0
'"
'"
~
'"
N
~ '"
N
'"
..
..
. .
..
. . . .
x x
x
x x
x x x
"
"
"
0
0
0
l>:
l>:
l>:
...
...
...
CR3
..
o
~
x
z
z - - - -
0:
..
~
N '"
. .
. .
x
x
CR2
+5V
LOAD PRESET NO.
1-"------------..---<~--t------..-~--yR~7-+5V
2K
<J)
l>:
!!?
~
z
z
z
z
z
0:
0:
0:
0:
0:
. .
. . . .
5
. . . .
5
.. .. . .
. .
.. ..
. .
..
N
'"
0
'"
0
'"
0
N
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0
N
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0
~
'"
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'"
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. .
. .
. . .. ..
. .
. . ..
..
. . . .
. .
. . . .
x
x
x x x
x x
x
x x x
x x x
x
"
"
"
"
"
0
0
0
0
0
l>:
l>:
l>:
l>:
l>:
...
...
...
...
...
+5V
X02-1- --1- ---} ---1- ---
*----
*---- * ---- * ---- *---- *----* ----
x--{
~C~U~TER
03320-:'6-6;;;;- -
-
0 - - -
F - - -
C - - -
E - - -
J
- - -
L - - -
H - - -
K - - -
0" --- o' - - : - - :
-t,' --- ----- ----- ----- ----- ----- ----- ----- ------ -- --- --
~
I
r
~
~
~
i
~
~
~
i
~
~
~
LOGIC LEVELS HI
TRtlE("$V)~
(9
's
COMPLEMENT OF FRONT
PANEL SE TrINGS)
+5V
RI
270
R2
330
+
CI
~IBO
20-32.99 MHz
XA2
II
FROM XA3 PIN 3
--<
0
~f--1~t-i
(VTO FREOUENCY)
I
C2
.01
,
1
R33
5.IIK
2.50 Vdc( .OHr, any
rang.J
TO
-3.36 VdcfJ2.99,onyrang_)
TP3
1
I
I
I
I
I
I
I
I
I
I
I
I
I
ERROR DC
>'......
-------+-~ s ~TO
XA3 PIN 4
II,
I
'
:
I
I
:
DC AMPLIFIER
J1J11
-.j
100" SEC
f.-
(
+15V
R21
10K
RIB
499
RI3
100
-15V
CII
15;P
+15V
+5V
t
N VARIABLE MODULus COUNTER
X02
RI6
C25
R29
--<
10KH,
REF
I K
.047
.g:~T:)j~
-15V
10K
C24
R35
0.43
W
.Ol~
10K
L
:d_'
-15:
-~5_V
~
-f
SEE SECTION VIII, BACKDATI NG
L
_
COPYRIGHT 1971
BY HEWLETT-PACKARD COMPANY
-----------------~
33Z0A ·J-2556A
Figure 7-20.
12
N Counter A2.
7-41/7-42

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