General Care, Troubleshooting and Service
6-29
Figure 6-30
Raw Electrometer Data After Cleaning
Following cleaning, the raw electrometer channels should look more like
Figure 6-30 (note different y-axis scale) with data fluctuating somewhere
around 10 fA or less at 0.1 second resolution.
Another important consideration is that the instrument is properly warmed
up for at least 10 minutes after being powered off and back on.
Errors
Instrument errors may be reported during a run by displaying a popup
window describing each error encountered. This window appears above the
status bar and will stay on your screen until you close it. A similar popup
window also appears when an existing run file is opened in which there
were instrument errors. An instrument error popup window looks something
like the one shown in Figure 6-31.
Figure 6-31
Instrument Errors Detected Dialog Box
Tables 6-2 and 6-3 describe non-fatal and fatal errors that may occur and
suggested actions.
Error flags in Table 6-2 indicate
non-fatal errors
occurred but the
associated data points may be still usable. The data points are shown in a
graph as reported.
