Kikusui TOS5050A, Руководство по эксплуатации

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TOS5051A/5050A 3-5
Chap
.3
Handling Precautions
3.3 Warnings after Turning OFF the Power
3.3.1 Check Items after Turning OFF the Power
If you have to touch the DUT, test leads, probes, and/or output terminals and their
vicinities for re-connections or other reasons, be sure of the following two matters:
• The output voltmeter indicates “0.”
• The DANGER lamp has turned OFF.
When you have tested the DUT with the DC output of the tester, the DUT will
remain charged at the high test voltage. For details, see section 3.3.2, “Residual
High Voltages (TOS5051A Only)” on Page 3-5 .
3.3.2 Residual High Voltages (TOS5051A Only)
Warning for Residual High Voltages
When you perform a test with the DC output, the DUT, test leads, probes, and out-
put terminals and their vicinities are charged up to high voltages. Even after you
turn off the DC output, these voltages remain there for a period that depends on the
conditions of the test. Within this period, never touch the DUT, test leads, probes, or
output terminals or their vicinities to avoid electric shock.
When touching a section charged with high voltage, check the following:
• The output voltmeter indicates “0”.
• The DANGER lamp has turned OFF.
Checking the Discharge
The time necessary for the residual high voltage to be discharged varies depending
on test conditions--such as the properties of the DUT and the test voltage delivered
by tester.
Table 3-1 indicates the time it takes to discharge the internal capacitor when the
DUT is not connected (on the tester alone).
If a DUT is connected, the discharge time varies depending on the characteristics of
the DUT.
Table 3-1 indicates the time it takes to discharge when a DUT whose capacitance is
0.05
μ
F is connected to the tester.