Fluke 93 Service Manual page 38

CIRCUIT DESCRIPTIONS
3.3
DIGITAL
CIRCUITS
(A1
3.3.1
Introduction
TTie following
paragraphs
describe the circuits
on
the
digital
At
PCB
In
detail.
Refer
to circuit
diagram
At
(figure
10.2
in
chapter
10).
3.3.2
Overview
digital circuits
The
digital circuitry of
the
ScopeM
eter
can be separated
Into
three
main
parts:
'
Micro proceeeor
circuitry
• Digital
ASIC
(in
the following
text:
D-ASIC)
circuitry
-
LCD
circuitry
A
block
diagram, which
clearly
shows
the connections
between
these
main
parts.
Is
shown
In
figure 3.2
TO/TROM
niOfl
ANALOG
ADC ASIC
ST6097
9?02C4
DIGITAL
A1
PCB
tCIRCUIT
DIAGRAM
ATI
Figure 3.2 Block
diegram main
parts
digital
drcuitry