User Manual SM6026
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p) Press [0][.][0][0][0][3], +0.0003 will be displayed in the prompt information zone and the soft key
zone will display the following available units: p, n, μ, m and k. Press ENTER, this zone will be
changed as 300.000μ and the cursor will automatically move to the parameter zone of sweep point
3.
q) Based on 1-p steps, input 100kHz, B, 0.0060 and 0.0100 for the 3
rd
sweep point.
3) Alarm setup
a) Press [SYSTEM] to enter into the <System Setup> page.
b) Move the cursor to the FAIL BEEP zone to select HIGH LONG.
4) Mount the test fixture (TH26005) to the test terminals of SM6026 A.
5) Execute correction function (To avoid the influence of the stray impedance on the measurement
accuracy, it is necessary to execute open/short correction (refer to chapter 5.1.1 Sweep Correction)).
6) Insert the tested capacitor to the test fixture.
7) Execute test operations.
Press [DISP] and then press List Sweep to enter into the <List Sweep Display> page. The instrument will
test continuously and then display the test and the compare results on page. If the compare result is H
(higher than the high limit) or L (lower than the low limit), there is a beep alarm. The following figure
shows the measurement display page.
8) If the test result is obviously incorrect, please check the following items.
a) Check the tested inductance is in good connection with the test fixture or not.
b) Check the test fixture is in good connection with the test terminals of the instrument or not.
c) Redo the open/short correction.
NOTE
: When the sweep open/short correction is used, the point-frequency correction function should
be set as OFF. Refer to Correction operation in this section.
5.6 Transformer Measurement
Aiming at the rapidly increased demand for electronic transformer, SM6026 A provides measurement
function for basic parameters of transformer. Coordinating with the test fixture of TH26038, the
instrument can easily test the primary and secondary inductance (L2A, L2B), turn ratio (N, 1/N), mutual
inductance (M), primary and secondary direct-current resistance (R2) of the transformer directly. Also, it
can test another two common parameters of the transformer indirectly: winding equivalent capacitance
Co, leakage inductance Lk.
NOTE
: where, “2” in L2A, L2B, R2 indicates two terminal measurement method to differ from
four-terminal measurement in LCR.
SM6026 A is designed to provide easy and cheap transformer measurement method. Limited to the test
Figure 5-15 Schematic diagram for transformer and its parameter
terminal, transformer measurement can only adopt two-wire method. Consequently, its measurement
