Kikusui TOS5050A, Руководство по эксплуатации

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10-4 TOS5051A/5050A
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When in the AC mode, the current which fl ows through the stray capacitances of
the test leads, test jigs, and other items on the test circuit also causes measuring
errors. The total judgement accuracy is the sum of this current and the above-
mentioned judgement accuracy. Approximate values of such currents are shown
in the following table. Note that, in high-sensitivity high-voltage test, the cur-
rent which
fl ows through the stray capacitances may become larger than the pre-
set lower cutoff current and the LOWER PASS/FAIL judgement may not be
successfully done.
When other test leads than the above are used, the current may differ depending
on the conditions of use.
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In order to be able to make a FAIL judgement when in the state that the output
terminals are shorted, a certain minimal level of no-load output voltage is neces-
sary due to the internal resistance of the output circuit. This item indicates such
minimal output voltage.
Item TOS5050A TOS5051A
Pass/fail judgment Type of judgment • Window comparator type
• If the current detected is larger than the preset upper cutoff cur-
rent, the tester gives a FAIL judgment.
• If the current detected is less than the preset lower cutoff cur-
rent, the tester gives a FAIL judgment.
• As the tester gives a FAIL judgment, it cuts off the output and
delivers a FAIL signal.
• If the test period elapses without any unacceptable conditions,
the tester gives a PASS judgment.
Upper cutoff current
setting range
0.1 mA to 110 mAAC
0.1 mA to 110 mAAC
0.1 mA to 11 mADC
Lower cutoff current
setting range
0.1 mA to 110 mAAC
0.1 mA to 110 mAAC
0.1 mA to 11 mADC
Judgment accuracy
±(5 % + 20
μ
A) of upper cutoff current
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Current detection
The absolute value of current is integrated and compared with the
preset cutoff current value.
Calibration Calibrated for rms value of sine wave, with pure-resistive load
No-load output voltage
required for detection
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Approx. 460 V when at 100 mAAC setting
Approx. 100 V when at 10 mADC setting
Test time Setting range 0.5 s to 999 s
With Timer-off function
Accuracy ±20 ms
Output voltage 1 kV 2 kV 3 kV 4 kV 5 kV
When 350-mm-long test leads
are used being suspended in air
(typical values)
2 μ A 4 μ A 6 μ A 8 μ A 10 μ A
When accessory test leads TL03-
TOS are used (typical values)
16 μ A 32 μ A 48 μ A 64 μ A 80 μ A