Software Description
ComTec GmbH
5-7
5.1.6. Coincidence Definition dialog
Clicking in the MPA4 Settings dialog on ADC Coincidences... opens the Coincidence Definition
dialog box. Here the several ADCs can be combined to be used either in single mode, i.e. without
regarding any coincidence, to be not activated, or to use it in coincidence mode. The Button
<<All
removes all ADCs from the respective list above it. To insert an ADC into a list, first select it in the
list where it is and then press the
>>
button below the list where you want to insert it. To change
an ADC from single mode into coincidence mode, first deactivate it and then insert it into the list
Coinc. with any
. Any ADC inserted into that list by default has the ability to start a coincidence
time window. If you want to disable it, uncheck the checkbox
Start enable
. An 'S' after an ADC
name in the list indicates whether the Start of coincidence window is enabled or not. You can
then define
Dependent coincidence groups
by inserting selected ADCs from the 'Coinc. with
any' list into one of the four available groups. ADCs in one of the groups must all have data within
the same coincidence window, otherwise the event is dropped. The same ADC may be in several
groups, therefore it is possible either to
move >>
or
copy >>
it into a Dependent coincidence
group. It is possible to use an ADC as well in Single as in Coincidence mode. In this case the
histogram length will be twice the ADC range, in the lower half the single data is shown and in the
upper half the coincidence data. In the
Event Stamp
box there are checkboxes to insert 32 or 48
timer bits, and scalers 1, 3 and 4 into coincidence event data. (Scalers 3 and 4 can be optionally
up / down counters that could for example direclty indicate the x, y position controlled by two
stepping motors.)
Click
OK to
accept all settings.
Cancel
cancels all changes. Clicking „
Save Settings
“ stores all
settings in the file
MPA4A.SET
.
Fig. 5.9: Coincidence Definition dialog box