HP 4262A User Manual

»
Model
4262A
Section
VIII
Table
8-3
Table
8-3.
Front
Panel
Symptoms
of
Internal
Control
Misadjustment.
Adjustment
Symptom
Al12R1
When
TEST
SIGNAL
setting
is
LOW
LEVEL,
autoranging
operation
sometimes
does
not
work
well.
A12C3
Measurement
accuracy
of
10kHz
measurements
is
lower
on
the
highest
L
and
R
measurement
ranges
or
the
lowest
C
measurement
range.
Al2C11
C
ZERO
ADJ
control
range
is
improper.
Al13C1
The
10kHz
measurement
error
is
excessive.
Al3R1
When
making
a
measurement
in
the
series
equivalent
mode,
the
measurement
(OFS-1)
accuracy
is
sometimes
lower
(due
to
improper
dc
level
at
A13TP3).
A13R2
When
making
a
measurement
in
the
parallel
equivalent
mode,
the
measurement
(OFS-2)
error
is
sometimes
excessive
(due
to
improper
dc
level
at
A13TP3)
—
especially
when
TEST
SIGNAL
is
set
to
LOW
LEVEL.
A13R66
Measurement
accuracy
will
become
lower
when
offset
voltage
at
A13U6
pin
Tis
(OFS-3)
not
zero
volts.
This
is
usually
more
noticeable
when
TEST
SIGNAL
is
set
to
LOW
LEVEL.
A13R67
D
measurement
error
sometimes
exceeds
specifications
(impossible
to
automatical-
(OFS-4)
ly
adjust
the
detection
phase
of
phase
detector).
This
symptom
is
present
when
auto
phase
adjustment
signal
at
A14TP3
exceeds
0
+3
volts.
Al4R1
Measurement
errors
for
both
LCR
and
D/Q
values
has
increased.
The
error
is
(ZOF)
maximum
at
count
displays
of
1999
for
all
three
measurement
functions
(Cs,
Lp
and
Rp).
Al4R15
D
measurement
has
significant
error
(detection
phase
error).
(APAO)
A
231%/'2}{1)
Instrument
is
inoperative
or
measurement
sometimes
stops.
8-19

HP 4262A Specifications

General

Brand	HP
Model	4262A
Category	Measuring Instruments
Language	English