Chapter 5: Raw Data Measurements LB 9507
5-6
R9
06: DELAY TIME INJ1/INJ2 1.2
(1.2 - 300.0) LAST DISPLAY
Enter the desired delay in seconds (1.2 to 300 sec) between both
injections and confirm with <enter>.
Only if you have selected one or two injectors:
R10
06: MEASURE BACKGROUND NO
YES NO LAST DISPLAY
Select here if the background rate is to be measured prior to the
injections and the actual measurement of each tube.
If you select <NO>, display R14.
<YES> takes you to the next display:
R11
06: MEASURING TIME BKG [s] 0.5
(0.1 - 200.0) LAST DISPLAY
Enter between 0.1 and 200.0 seconds for the background
measurement and press <enter>. Reasonable times start at half
a second, allowing statistical variations to be compensated for.
Otherwise, the background values may be too high or too low
which either distorts the result of the measurement or leads to an
exceeding of the threshold.
Remember that the background effect is measured in order to
obtain an alarm threshold for background rates that are too high,
as with phosphorescence effects for example.
R12
06: AUTOMATIC BKG SUBTRACTION NO
YES NO LAST DISPLAY
Here you can select whether the background effect is to be
subtracted automatically from the measured results.
Remember that the statistical significance of the measured values
is dependent upon the measuring time.
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