HP 3585A Service Manual page 258

Spectrum analyzer
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Sc:IIns
ARTE K
=>
by
1KHz . 3KH2 . 10KHz PATH
FIRST LC STAGE
==== == == == =, ,\,
+ lSY
R14
R9
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100
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R33
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100Hz
5 . 6K 30Hz
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1.
10Hz
3Hz
CRI
CRZ
CR3
CR4
C15
0 . 1
C16
C19
0 . 1
0 . 1
R35
R36
R37
R38
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100
100
IDD
10Hz
1KHz-10KHz)
(§) 2003-2005
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SECOND LC STAGE
== == == == == ="
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THE
.
0 . 1
PROCEDURE.
R69
R70
R67
R68
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R53
R54
R55
R56
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IDDK
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R94
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CR13
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30KHz PATH
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r
R7
R88
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R87
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fIRST AND
TP6
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SECOND STAGE C59
l
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C44 '
R73
loH
R86
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RIDa
U4
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Ul
U8
U9
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R78
R77
R79
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5 . 6ZK
5 . 49K
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R91
R90
R89
lK
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30Hz
100Hz
3Hz
I TO V CDNVERTER
==== =-:1
l
ANALD' HiiTliER
D .
P/D
1\ 1 0
03585-66510
I
I
\
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I
+ 15V
LL
R81
7VP
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TO
. vDC
w,rII
L
. o
}
1\- 3 b
SIGNAL
R1
0
9
C46
4
7
0 . 1
TP7
C4
A15
350KHz
81!i�
R8Z
MUA1 ! ,815}
S . lK
A14 >--
114
R83
C48
100
0 . 1
-15V
lZ lZ
CD_,IoN
I C PDWER SUPPLY
4
-15V 15)
4
-15V . IS)
4
12
-15Y
(5)
4
lZ
-15Y . CS)
I
4
lZ
-15Y.! (5)
I
U7
8
16
8
16
8
16
8
16
I
L3
5 . 6uH
113>-- + 5V
.. ---- -_- --'
+ 5V
L
I
10
luH
+15V ----
+15V
1
+15V
I
D . l
LZ
IDOuH
- 15V
-15V
>--
m
6 . 8
-15V
1
0 . 1
GND
I
-15V ,
0 . 1
R6
D. l � RUl
-15V
D. l
-15V
• __
1
-15V
C61
D . l
Drawing 7-2a. IF Filter No . 1 (665 1 1 )
7-27/7-28

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