Time Controller Series User Manual
Section 6: Operating the Time Controller Software
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Figure 9: Start-Stop histogram view (near-identical to the Coincidence histogram view)
To choose which histograms you wish to display, select or deselect the relevant checkboxes at the
top of the view, to the left of ‘Histogram 1’ to ‘Histogram 4’.
To select the start and stop channels for each histogram, click on the drop-down menus immediately
to the right of each histogram name. Note that in high resolution mode you will only be able to
select input channels 1
—4, it will not be possible to select the ‘Start’ input channel.
You can control the histogram graph figure in the following ways:
•
Translate the histogram view by clicking and dragging with the hand tool.
•
Zoom in to an area of interest with the magnifying glass tool
•
Reset the zoom level with the zoom-out tool.
•
Make the legend visible or invisible, control the auto-scaling of each axis, and select
linear or log 10 scaling for each graph axis with the settings tool.
Additionally, you can inspect up to five windows of interest in the displayed histograms with the
Cursors tool.
Figure 10: Histogram cursor control
Select or deselect the check-box next to each cursor in the dialogue to choose which will be visible.
Select the histogram that will be inspected in the drop-
down ‘Histogram’ menu of the corresponding
cursor.
To select the window of interest, type in the Min time bin value, as well as the Max or Width value.
Alternatively, select the Max and Min values on the graph itself by dragging the cursor with the hand
tool.
In this way, you can inspect the total number of counts in this window, as well as the average
number of counts per time bin.
6.1.2.2
Coincidence histogram
The Coincidence histogram view is identical to the Start-Stop histogram view, except that only two
pairs of channels may be selected.
In this view, each coincidence histogram measurement is the sum of two start-stop measurements:
one histogram starting on the 1
st
channel and stopping on the 2
nd
channel, and time-reversed
(
τ
à
-
τ
) histogram starting on the 2
nd
channel and stopping on the 1
st
channel.