3. Startup
23
3.4.6 Clear Zero Correction (Zeroing)
Before making measurements, AT682/683 should be zeroed to correct for test lead or
fixture errors. During the zeroing process corrections are calculated and stored in
AT682/683 flashrom and applied to ongoing measurements. The zeroing process
automatically measures stray parameters and retains the data, which is used to correct
measurements so that results represent parameters of the DUT alone without test lead or
fixture capacitance. Zeroing is recommended at the start of each work day or more often if
leads, fixture or test configuration to the DUT is changed. Zeroing should also be
performed anytime the test voltage is changed, which also includes recalling a set of test
conditions from memory with a different test voltage.
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.
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 3-8 Three States
To Next Page
Loading...
Need help?
General
