HP 4262A Operating And Service Manual page 45

Section III
Model 4262A
Table 3-3
Table 3-3. Annunciation Display Meanings.
LCR DISPLAY DQ Indicated Condition Action
e s FUNCTION has been inappro- Change 4262A FUNCTION to
vl - priately set. L, C or R suitable for the
sample being measured.
Measured L or C value exceeds
1999 counts. DQ display indicates| Set 4262A to:
that DQ measurement has been CIRCUIT MODE: AUTO
omitted. LCR RANGE: AUTO
i Measured R value exceeds 1999 Try changing TEST SIGNAL
oo
counts.
to 120, 1k
or 10kHz.
(overflowed)
reading)
Measured D/Q value exceeds the
upper range limit (1999 counts).
Accuracy of LCR readings may
not be within specifications.
Set 4262A DQ RANGE to
AUTO.
Try changing TEST SIGNAL
to 120, 1k or 10kHz.
CIRCUIT MODE setting is not
suitable for the sample being
measured.
Measured L, C or R value is ex-
tremely large or small compared
with the selected range.
Set 4262A to:
CIRCUIT MODE: AUTO
LCR RANGE: AUTO
Try changing TEST SIGNAL
to 120, 1k or 10kHz.
1y
(=) I_IL
o
o=
(less than
When Measured L or C value is less
than 80 counts, DQ measurement
is omitted.
Set 4262A LCR RANGE to
AUTO. Try changing TEST
SIGNAL to 120, 1k or 10kHz.
80 counts)
In ALCR measurement, the differ-
ence between the preset value and
the measured value of the sample
exceeds -999 counts.
In 2ALCR measurement, the cal-
culated difference exceeds -999
counts. In addition, the value of
measured sample is less than 80
counts. '
Minus (-) is displayed.
Minus display sometimes occurs
when sample having a value around
zero is measured.
Zero count display is meaning-
ful when minus (-) display
repeatedly turns on and off.
Sometimes a minus display occurs
when a capacitor (or inductor) is
measured in L (or C) FUNCTION.
Change to appropriate
FUNCTION.
Offset adjustment signal applied is
too great (causes minus display).
Readjust offset signal for
proper magnitude.