HP 4262A User Manual

Section IV
Paragraph 4-10
PERFORMANCE TESTS
Model 4262A
4-8
4-10.
CAPACITANCE
ACCURACY
TEST.
DESCRIPTION:
This
test
checks
capacitance
measurement
accuracy
for
zero
and
full
scale
displays
at
three
test
frequencies
and
at
two
signal
levels.
The
test
is
made
by
connecting
a
stable
capacitor
more
accurate
than
the
4262A
to
the
instrument
and
reading
the
display
to
verify
that
the
4262A
meets
its
measurement
accuracy
specifications.
Check
all
ranges
in
Cp
mode
and
one
range
in
Cs
mode
at
each
frequency
(120Hz,
1kHz
and
10kHz)
to
guarantee
C
measurement
accuracy
since
all
variable
elements
(range
resistors
and
detecting
phases)
needed
for
C
measurement
are
thus
checked.
In
this
test,
almost
all
ranges,
from
the
lowest
throu
verified.
Note
If
the
following
tests
satisfy
the
accuracy
specifications,
all
the
accuracy
specifications
listed in Table 1-1 are guaranteed.
Capacitance Accuracy Test Ranges
TEST SIGNAL CIRCUIT RANGE
Freq. Level MODE 110 00pF|100.0pF}L000pF |10.00nF{100.0n51000nF|10.004F
ILOW LEVEL{ PRL
120Hz PRL
normal
SER
LowLEVE]] PRL
1kHz PRL
normal SER
ILOW LEVEL] PRL
10kHz PRL
nozmal
SER
TEST SIGNAL level:
LOWLEVEL..................
50mV
normal
.........................
1V
Tests
for
dissipation
factor
accuracy
with
above
capacitance
standards
should
be
done
at
the
same
time
as
capacitance
tests
Check
all
parallel
(PRL)
mode
ranges.
It
is
sufficient
to
check
any
one
range
in
series
(SER)
mode.
I OUT BOX
Figure
4-2.
Capacitance
Accuracy
Test
Setup.
gh the highest ranges, are being

HP 4262A Specifications

General

Brand	HP
Model	4262A
Category	Measuring Instruments
Language	English