6-2
TOS5051A/5050A
6.1
AC Withstanding Voltage Test Procedure
Set the required test parameters to test your DUT. The ranges of test parameters
available are as follows:
6.1.1
Selecting an AC Test Voltage Range
With the TEST VOLTAGE switch, select an AC test voltage range (5 kV or 2.5 kV).
The AC test mode message will appear, and the TEST VOLTAGE RANGE message
will indicate the test voltage range you have selected.
• Before turning the TEST VOLTAGE switch, be sure that the TEST VOLTAGE
control is at the fully counterclockwise position (“0” position).
• During the TEST-ON period (period that the “TEST” message appears), the TEST
VOLTAGE switch is disabled. During this period, it is possible that the actual posi-
tion of the switch does not conform with the TEST VOLTAGE RANGE message or
the AC/DC test mode message. When the test is terminated, the switch is enabled
and the selected test voltage range and AC/DC mode (TOS5051A only) take effect.
Do not change the TEST VOLTAGE switch during the TEST-ON period.
• Do not let the TEST VOLTAGE switch get caught between two range positions. If
you turn ON the POWER switch while the TEST VOLTAGE switch is caught in
the middle, the test voltage range message shows a blinking “0 kV” to notify that
the setting has not been con
fi
rmed (in addition, if the TOS5051A is in the middle
of switching between AC and DC, both “AC” and “DC” light up simultaneously).
Because the setting has not been con
fi
rmed, “READY” turns off to notify that the
tester is not in the READY status. When changing the TEST VOLTAGE switch,
turn it accurately to a range position.
6.1.2
Setting the Upper Cutoff Current
This procedure is to set the upper cutoff current, the criterion for pass/fail judgment
on the DUT. If the leak current that
fl
ows through the DUT is larger than this limit,
the DUT is judged to be FAIL.
• Test time and pause period are limited by setting upper cutoff current. “ON
30min” of the front panel character shows a maximum test time and “OFF 30min”
shows a minimum pause period. For details, refer to section 10.1, “Basic Perfor-
mance” (Page 10-2 ).
Test voltage
Criterion for upper
cutoff current
Criterion for lower
cutoff current
Test time
0 kV to 5 kV
0.1 mA to 110 mA
0.1 mA to 110 mA, OFF
0.5 s to 999 s, OFF
NOTE
NOTE
Maximum test time
Minimum pause period
Содержание TOS5050A
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