Extech Instruments 7470 Operation Manual page 47

Withstand Voltage test when the Output is activated. If the charging current was lower
then the setting, the test cables may not be connected properly.
This instrument can set the Charge-LO value manually or automatically. To set the
Charge-LO value manually, use the numeric keys to enter the Charge-LO current
setting and then press the ENTER key. The program will store the Charge-LO setting
and advance to the Ramp-HI parameter. The setting range of Charge-LO is from 0.0
to 350.0 A. The unit is A and 0.1A per step.
To use Auto Set, be sure that the test parameter of Output Voltage and Ramp Time
have been set to the values that will be used for the Final test and connect the test
cables and/or test fixture between the instrument and DUT.
used then the scanner channel must also be set, and then press the TEST button.
The instrument will apply the voltage that has been entered for this memory-step
selection.
Please be aware that the program will activate high voltage on the
WARNING
output connector while the Test button is pressed.
The program will read the charging current of DUT and set the Charge-LO current at
approximately one half (1/2) of the reading. The display will show:
Charge-LO =
TEST to Auto Set
The value showing on the display is the Charge-LO setting and is not the reading of the
charging current of the DUT.
Then press the  or  key to advance the program to another test parameter or press
the EXIT key to exit from the setting mode to the operation mode.
5.2.12. Connect
Advance the menu to the Connect selection. The display will show:
Connect
ENTER to Select
Use the ENTER key to toggle the Connect Mode ON and OFF.
This function when turned ON will connect or link the current memory to the next
memory. This Allows High Withstand Voltage Tester to Run 50 consecutive tests in a
sequence if desired.
XXX.X A
= O N or
If the scanner is to be
Connect =
ENTER to Select
O F F
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