TOS7200
29
Setting the Timer Function
4
With the SHIFT key held down, press the or key to change the value.
If necessary, change the value at another digit to reach the desired test time.
Setting the wait time (WAIT TIME)
In insulation resistance testing, application of the test voltage to the DUT, including a
capacitive DUT, results in a lower insulation resistance measurement than expected until
completion of charge, due to the charge current. To eliminate the effects of the charge current
during lower judgment, the tester provides a wait time extending from the application of the
test voltage to the start of lower judgment.
The wait time can be set in the range of 0.3 s to 10 s (resolution of 0.1 s).
1
Press the TEST/WAIT key.
This causes the rightmost digit of the LED to blink, indicating that the cursor is
positioned at this digit.
2
Check whether the WAIT LED is lit.
If it is, the wait time is displayed. If the WAIT LED is not lit, the value displayed is
the test time. In such cases, press the TEST/WAIT key again to make the WAIT
LED light.
3
Press the or key to move the cursor to the digit at which a value is to
be set.
4
With the SHIFT key held down, press the or key to change the value.
If necessary, change the value of another digit to set the desired wait time.
Setting the test time shorter than the wait time with the timer function set to ON causes the
TIMER ON LED to blink, notifying the operator that the test cannot be conducted.
Setting the test time shorter than the wait time with the timer function set to ON causes the
TIMER ON LED to blink, notifying the operator that the test cannot be conducted.
