TOS8870A
WARNINGS AND CAUTIONS FOR OPERATING THE TESTER
7
2.2 Warnings and Cautions when Operating the
Tester
2.2.1 Connecting of test lead-wire on LOW side
Fig.2-2 shows the connection of the test lead-wire on LOW side. Every time the Tester is used,
check if the lead wire is not damaged or disconnected. The lead-wire connection to the DUT shall
be made from LOW side. If the connection is incomplete, it is hazardous that the entire DUT may
be changed with high voltage.
Fig.2-2
Connecting of test lead-wire on LOW side
2.2.2 Connection of test lead-wire on high-voltage output side
After connecting the lead-wire on LOW side, take the following procedure.
1.
Push the STOP switch.
2.
Con
fi
rm if the indicator of the output voltmeter is at "0".
3.
Con
fi
rm if the DANGER lamp has been off.
4.
Connect the high-voltage test lead-wire with the HIGH VOLTAGE terminal.
5.
Short the high-voltage test lead-wire with the LOW test lead-wire once, and con-
fi
rm that no high voltage is output.
6.
Lastly, connect the LOW test lead-wire and then the high-voltage output test lead-
wire to the DUT.
2.2.3 Power switch
The power switch shall be turned on after con
fi
rming that the TEST VOLTAGE dial has been turned
to the extreme left ("0" position).
2.2.4 Change of test condition
Change-over of the switches on the panel shall be made after con
fi
rming that the STOP switch has
been pushed in and that the TEST VOLTAGE dial has been turned to the extreme left ("0" position).
LOW terminal
Test lead-wire (Black) to housing of
Device Under Test
Attach the test lead-wire fixuture,
as illustrated.
