3-2
TOS9213S/ TOS9213AS
3.1
Prohibited Operations
Do not turn on/off the power repeatedly
After turning OFF the power switch, be sure to allow several seconds or more before
turning it ON again.
Do not repeat turning ON/OFF the power switch rapidly –if you do this, the protec-
tors of the tester may not be able to render their protective functions properly. Do
not turn OFF the power switch when the tester is delivering its test voltage–you may
do this only in case of emergency.
Do not short the output to the earth ground
Pay attention so that the high test voltage line is not shorted to a nearby AC line or
nearby devices (such as conveyors) which are connected to an earth ground. If it is
shorted, the tester chassis can be charged up to the hazardous high voltage.
Be sure to connect the protective grounding terminal of the tester to an earth line. If
this has been securely done, even when the HIGH
V
OLTAGE terminal is shorted to
the LOW terminal, the tester will not be damaged and its chassis will not be charged
up to the high voltage.
Be sure to use a dedicated tool when grounding the protective grounding terminal.
See "2.5 Connecting the AC Power Cord".
• The term "AC line" here means the line on which the tester is operating. That is
the line to whose outlet the AC power cable of the tester is connected. It may be of
a commercial AC power line or of a private-generator AC power line.
Do not apply an External Voltage
Do not apply a voltage from any external device to the output terminals of the tester.
The analog voltmeter on the front panel cannot be used as stand-alone voltmeter.
They may be damaged if their output terminals are subject to an external voltage.
3.2
Action When in Emergency
In case of an emergency (such as electric shock hazard or burning of DUT), take the
following actions. You may do either (a) or (b) first. But be sure to do both.
(a)Turn OFF the power switch of the tester.
(b)Disconnect the AC power cord of the tester from the AC line recep-
tacle.
NOTE