User Manual SM6026
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short circuit, primary Lk can be measured with L2A; disconnect Hpot terminal and connect with the
primary polarity in short circuit, secondary Lk can be measured with L2B.
5.6.6
Winding capacitance Co
The equivalent capacitance of transformer winding can be measured with Cp parameter in LCR manner.
Figure 5-21Capacitance measurement of transformer winding
5.7
Setup example of comparator
SM6026 A provides complete comparator function. It is convenient for component measurement and
judgment, incoming and outgoing quality inspection in production line. Standard configuration of
HANDLER interface makes it realize automatic sorting measurement system.
The concept and specific operation of the comparator has been described in the preceding chapter. Here
are two setup examples.
5.7.1
Capacitor sorting
Capacitor type
: 0805CG271
Basic requirements
: the capacitance is divided into two bins: BIN J and BIN K. When the capacitance
passes and the loss fails, it will be sorted additionally.
Measurement parameters
: frequency of 100kHz, level of 1Vrms, SLOW, FAIL alarm and external
trigger.
Sorting parameters
: J bin -4.6% ~ +4.8%, K bin -9% ~ +10%, loss tg
< 0.15%.
The parameters needed to be set in this example are listed below:
Primary parameter
（
FUN1
）
Cp
Secondary parameter
（
FUN2
）
D
Frequency
（
FRQ
）
100kHz
Level
（
LEV
）
1V
Speed
（
SPEED
）
SLOW
Switch of auxiliary bin
（
AUX
）
ON
Tolerance Mode of primary parameter
（
MODE
）
%TOL (percentage tolerance mode)
Nominal value
（
NOMINAL
）
270pF
Lower limit of BIN1
（
BIN1 LOW
）
-4.6%
Upper limit of BIN1
（
BIN1 HIGH
）
4.8%
Lower limit of BIN2
（
BIN2 LOW
）
-9%
Upper limit of BIN2
（
BIN2 HIGH
）
10%
Lower limit of secondary parameter
（
2nd
0.0000
