
AT680 Leakage Current/IR Meter user’s Manual
20
Flow
:
In the external trigger state, the machine get the trigger signal,ouput the high voltage
and timer is on ,the machine sample each time and the output is off that the timer is to
0.In the same time, the handler interface output the sorting result (EOC,GD/NG) until
get another trigger signal.
3.4.6 Clear Zero Correction (Zeroing)
Before making measurements, AT680 should be zeroed to correct for test lead or
fixture errors.
.
1 Press Clear key to enter clear window. Before zeroing, remove all components
from test fixture.
NOTE:
The (+) test lead must be opened and suspended. NO touching any objects (such as
table).
.
2 Press Enter to clear zero.
During the zeroing process corrections are calculated and stored in AT680 flashrom
and applied to ongoing measurements.
.
3 Press Esc to terminate clearing process and exit zeroing window.
3.4.7 Adjust VFD Brightness
Press Shift Brightness key to adjust VFD Brightness.
The first line of VFD displays “VFD-LT” and the 2
nd
line shows current brightness
level. Press <, > or turn the Knob to change a new level.
Press Enter to save and exit to discharge state. Press Esc to exit to discharge state but
not save.
Brightness includes 8 levels:
0(dark) ~ 7(bright)
3.5 Measurement Procedure
3.5.1 Charge – Test - Discharge
Figure 3-9 Three States
Charge State
Discharge State
Test State