Uni-Probe LB 490
BERTHOLD TECHNOLOGIES GmbH & Co. KG
3 – 351
Volume 3 4 Calibration
3
4.3.1 Measure Background
If the following display is not visible, select it from the Start menu
as follows:
ACCESS TO SETUP FULL ACCESS CALIBRATION I/O NO. OF CAL.
POINTS (2) 1-2 POINT CURVE
See also "Setting the Operating Mode for Calibration" on
page 3–349.
Select
SET BACKGROUND.
Select
READ.
–For rod detectors you have to determine the background by
reading-in (
READ) the count rate.
–For point detectors you may enter a count rate of approxi-
mately 40 pulses via
ENTER. We recommend, however,
reading in the background for point detectors as well to
determine the actual background.
For more information on the background please see Volume 3,
section 6.1.
Start reading-in the count rate with
ENTER.
The count rate reading-in process has started. If the process
has been started with 0, it will take 30s until the count rate is
read in.
For more information on reading in the count rate please refer to
Volume 3, section 6.6.
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