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L o g i c 1 6 U s e r M a n u a l
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Input Tab
Name
In this text box a name can be assigned to each input. This is optional.
Level
This is the threshold voltage of the input.
Edge
The “Edge” checkbox toggles the relevant edge. If not selected, the positive edge is relevant.
Active
When the input has an active level, the color of this field turns to blue. The active level
depends on the selected edge. When using positive edge, the active level is high.
Input Frequency
This shows the single frequency of the respective input. This value is displayed regardless
whether the “logic” functionality is enabled or not. Please note: The two sets of values are
measured over a different time period and therefore the result can differ slightly.
Logic Tab
This tab is only available with the UQD devices that include the special “Logic” feature. It allows
testing and studying of some of the coincidence features of the logic, like measuring single and
coincident detections from arbitrary channels, and adjusting delays between channels. The
output on the right side gives the single count rates per cycle time and in thousands per second
(
kHz
) for each
Input
channel and, below, the count rates for the arbitrary coincidence
patterns.
Use Logic
Check off to start using logic mode
Store MinMax
Check off to show maximum/minimum kHz
Approx. Cycle time
The software tries to read the data with this measurement time. Because of computer
processing time, the actual cycle time is different. This time Cycle/ms is displayed on the
right and changes slightly. Only the actual cycle time is used to calculate detection rates.
Coincidence Window
Enter the maximum time from the first detection to the last detection in the coincidence
event. When all logically selected detections occur within that time window, then the event
is counted. Otherwise the event is not counted
.
Coincidence Patterns
Each line of buttons defines one coincidence event. Clicking on the button changes the state
of the corresponding input. You can set up to 16 patterns simultaneously.
+ The input must have an active edge in the coincidence window for the event to be counted.
- The input must not have an active edge in the coincidence window for the event to be counted.
