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4349B
Overall
Block
Diagram
Figure
3-7
shows
the
overall
block
diagram
of
the
4349B .
Figure
3-7.
4349A
Overall
Block
Diagram
The
4349B
doesn't
have
a
test
voltage
source
,
and
an
external
voltage
source
must
be
supplied
for
operation.
The
4349B
has
four
input
channels
,
form
which
the
test
current
owing
through
the
DUT
are
input.
The
multiplexer
switches
four
channels
on
a
single
measurement
trigger
.
Each
V
,
which
is
proportional
to
the
input
I,
is
analog-to-digital
converted.
The
CPU
calculates
I
from
the
converted
data,
then
calculates
the
DUT's
resistance
R,
by
dividing
the
measurement
voltage
by
the
measured
current.
Note
The
test
voltage
is
data
which
must
be
input
by
the
front-panel
keys
or
through
GPIB
interface
.
The
4349B
itself
has
neither
voltage
output
nor
voltage
measurement
capability
.
3-20
Function
Reference
Содержание 4349B
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Страница 29: ...C Overload No Contact Operations Messages Instrument Errors Messages 2 GPIB Errors Messages 3 Index Contents 9 ...
Страница 42: ...4349B Figure 1 1 Power Cable Supplied 1 10 Getting Started ...
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Страница 173: ...4349B Figure 8 5 Current Measurement Additional Error Measurement Time 400 msec General Information 8 11 ...
Страница 176: ...4349B Figure 8 9 10 Additional Error Measurement Time 400 msec 8 14 General Information ...
Страница 210: ...4349B Figure B 1 Handler Interface Comparison Output Signals Diagram B 2 Handler Interface Installation ...
Страница 212: ...4349B Figure B 3 Handler Interface Input Signal Diagram B 4 Handler Interface Installation ...
Страница 216: ...4349B Figure B 4 A1 Main Board B 8 Handler Interface Installation ...
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