Agilent Technologies 4284A Service Manual page 77

Precision lcr meter
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A N A LO G S E CT I O N B LOCK D I AG RA M (O PT. 0 01)
-
A 4 H I GH POWE R AM P L l F I E R / D C B I A S
D C B IAS MONITOR
Termlnol
r-t �
DC B i as Source
A 5 S I G N A L S O U RC E
Ouasi- S ine
Wave Generator
f i lter
0"
,
A s - e l K SF F
'--- -- --v- -- --­
900EG
OOEG
A2
A6
TO
TO
825
9.09K
� O.OIP
100
I
1 0
LCLI'
OUTPUT AMP
+2V
tOC biOS)
+J.5V
---c
--0
OFF �
'7
Range Resister
l OOK
r<1
31.6K
K
Lc Amp
3.16K
I
I K
1 0
1
3 1 6
I
100
31.6
I---< (
10
Active I nductor
Channel
Mul t i p lexer
Process Amp
,--- -- --,
Phase Sensit ive Detector
r---.
I
I
' "5
I
X
TO
I
from A 5
A 2 M O D U L A T O R
2
OSC LEVEL Nor m a l izer
1
I
@
. 3 0
I
"
"
I
I
1 1
0
MODEM
I
� 20
OSC LEVEL Normalizer I
x t
, I
from A 5
n a
Figure 3-1 2 . A
l
og Section Block Diagram (OpL00 1 )
:' : -ClK
'--v- --'
j r :-, A5
from A5
3·33

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