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Note 5: Check Method of Measurement Voltage Actually Applied to a Capacitor
Even though you set the measurement voltage to 1Vrms, if
“
1Vrms
”
is not actually
applied to the capacitor to be measured, you won
’
t be able to correctly measure
capacitance.
Check whether the measurement voltage set is actually applied to the capacitor by
applying plus and minus probes of a tester to both terminals of the capacitor set in
measuring jig and read a indicated voltage.
Fig.26 shows the check operation of the measurement voltage of a 1206 size
X7R-characteristic 10
F chip capacitor, in which measurement frequency is set to 1kHZ
and measurement voltage to 1Vrms. Actual measurement voltage is about 1.0Vrms and
measured capacitance is about 10.4
F.
Fig.26 Measurement Voltage Check by Tester
(3) Cable Length
When using measurement jig 16034E, set CABLE LENGTH to
“
0 (zero)
”
m.
MENU
NEXT
CABLE LENGTH
0m.
6-4. Calibration
Use
“
screen
”
displayed after pushing MENU
NEXT
COMPEN for the calibration.
The calibration at this point shall be performed for OPEN, SHORT and TEMP COMP. See
LCR meter 4284 measurement procedure in Section 5 herein for OPEN and SHORT
calibration methods.
OPEN COMPEN
OPEN ON
SHOT COMPEN
SHORT ON
STD OFF
TEMP COMPEN
6-5. Measurement
You can start the measurement of the MLCC capacitors after completing the TEMP
COMPEN above.
