Setup Test Pulser
Setup Test Pulser
The Test Pulser menu item allows you to select the amplitude (pulse-height) of an
internal test pulser for diagnostics purposes. The iMatic pulser generates pulses and
injects these pulses at the input of the PIPS detector preamplifier. The amplitude can be
set as a percentage of full scale. Full scale for the iMatic MCA is approximately 10
MeV. Any pulse with an amplitude less than 2.2 MeV is identified as a beta pulse and
any pulse with an amplitude greater than 2.6 MeV is identified as an alpha pulse.
Setting the pulser amplitude at
10%
will generate pulses near the middle of the beta
region of the MCA and setting the pulser amplitude at
60%
will generate pulses near
the middle of the alpha region of the MCA. Using these settings will allow the user to
test the proper operation of the system electronics, should the need ever arise.
Pulser Amplitude
The Pulser Amplitude menu item allows you to enter the amplitude of the internal
pulser from 0.0 to 100%; default value is 50%.
The pulser pulse height can be adjusted using these directions.
1.
Press the
Setup
key.
2.
Using the arrow keys, position the cursor “>” to item “18” in the menu, Setup
Test Pulser, and then press the
Enter
key.
3.
Using the arrow keys, position the cursor “>” to item “1”, Pulser Amplitude,
and then press the
Enter
key.
4.
Enter the pulser value as a percent of full scale and then press the
Enter
key.
The Pulser On/Off screen appears.
5.
Pressing the
Cancel
key will retain the original amplitude value and return to
the Test Pulser Control menu. Pressing
Cancel
a second time will return you
to the Setup menu.
iMatic Automatic Counting System User's Manual - 9239221K
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