HP 3580A Operating And Service Manual page 167

Spectrum analyzer
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Section VIII
Schematic No. 1: Change the Balanced Input Assembly
(Al8) schematic and component locator as shown
in
Figure
8-2.
S6
(
TO A9 {
I
INPUT
&,
:
-----~1-----
1
I
I
I
I/
JI
I
I
I
I
I
I
I
I
J2
n-~-1--===90=5"-"1--~-6<
I
HNPUTI
I
I
I
I
JI
HIGH"'------~--~
1900.nl
lsoo.nl
I
I
I
L.
0
~$4
[
0
~
I
I
I
I
I
~
5
I
<~
I
C3
1 2 2
+
C2
22
~
1::
~
~
cs
t47pF
RI
909
12(
L
R2
604
NOTE - ORIENT PWG SO WIRE
~
CONNECTS TO PIN 6
J
2
=~
lH-1
-cio~®
o3
a:: a::
TI
o4
11
-o:LJ-
::
-1
C4
~
905
3580-8-3375
Al8
Model 3580A
-R3-
-C5-
JI
©
-R4-
-R5~
hp
Port No 0'3580-66518
Rev A
C4
.33
Cl
.33
Tl
C5
160pF
R4
200K
R3*
150
Tl
LETTER
A
B
c
0
E
F
G
H
I
J
K
R5
20.5K
R3*
VALUE
.n
0
51.1
100
150
182
221
267·
332
392
475
562
___ _J
COPYRIGHT 1973
H£WL£ T t PAC MARO
COMPANY
3580-C-:..::;-:
Figure 8-2. Balanced Input Assembly.
8-2

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