HP 209A Operating And Service Manual page 37

Sine/square oscillator
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t •
FACTORY U:
R39
140
+21V
jSIC(FI
o
@-CD
CR4
+21V
R38
340
+21V
R40
18K
CR3
CR2
+19.8V
POSITIVE /
FEEDBACK
CR5
-21V
-Z.JV
CR6
-21V
C9*
1.5PF
04
-21V
+21V
R26
3320
-zov
03
02
+21V
-21V
+16.6V
/NEGATIVE
FEEDBACK
R28
549
R29
(
CI3
AGC
10K
3.4
TPI
-O.8V
51
RANGE
@XIO~XIK®
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XIO
XIOK
@
®
X2
XIOOK
0
CD
OFF
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GRN
r
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CIB
JI
C8
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L _ _ _
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5.5-18
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AGC
a
FREQ
CAL
@'
@)'
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o
CD
@'
R17*
14.5M
SIA
RI6
47.5M
R9*
14.5M
CD
o
®
SIB(F)
R8
47.5M
C6
2PF
RI4
12M
R7*
470K
R6
12M
R15"
470K
@"
C30*
1.5pF
R5
1.24M
RI3
1.24M
RI2
124K
CI
J.OI
RII
12.4K
R2
R3
R4
1240
12.4K
124K
RIO
1240
AGC
e.
FREQ
CAL
C4*
~
C3
6.8PF
9 -35 PF
SIA
0
0
" @-CD
0"' @"'
®
R'
@
R'
+21V
HIGH
RI
FREQ
470
CAL
?
C5
9-35
PF
6l4A
~ ~ ~ ~ E M B L Y (O~~~---------------------------------------------
I
I
I
CD
o
®-0
SIC
8
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TP2 B+
17~
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I
TP3 B-
:5
~--------------------~
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