HP 3580A - Page 167

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 &, :
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1
I
I
I
I/
JI
I
I
I
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I
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n-~-1--===90=5"-"1--~-6< I
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HIGH"'------~--~
1900.nl
lsoo.nl
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0
~
I
I
I
I
I
~
5 I
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122
+ 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