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Appendix
Setup
B
B-5
a timed measurement for sources that deliver at a
constant exposure rate. If the predicted timed
measurement is drastically different from the
expected value, there is no reason to wait for the
complete timer interval to expire before
investigating the cause of the discrepancy.
To differentiate the predicted and non-predicted
timed measurements, the instrument alternates the
display of time with a “PREDICT” indicator on the
predicted timed measurement lines.
B.4 Operation Instructions
B.4.1 Front Panel Controls
Test Function
• When the Test Function screen is not displayed, pressing the TEST FUNCTION button displays the
Test Function screen and the information/settings that were last viewed since power-up.
The TEST FUNCTION screen provides access to
information and settings such as the firmware
revision, charge and current scale factors, battery
and bias voltages, automatic leakage
compensation settings, and timer settings.
• When the Test Function screen is displayed, pressing the TEST FUNCTION button displays a
cursor that allows modification of the following settings:
- Enabling or disabling automatic leakage compensation or setting of the start and stop exposure
current thresholds
- Selecting the timer interval, count mode, and decimal places
- Specifying the effective exposure time presentation
RESET/MEASURE
• When the Measurement screen is not displayed, pressing the RESET/MEASURE button displays
the Measurement screen and the Measurement display that was last viewed since power-up.
• When the Measurement screen is displayed:
- And when the instrument is performing exposure measurements, pressing the
RESET/MEASURE button toggles the timer
- Pressing and holding the RESET/MEASURE button for one second zeroes all exposure
measurements; the instrument also zeroes leakage measurements if leakage was being
measured
NOTE
NOTE