5.3 The quCNT Module
Figure 6: The rst tab of the quCNT module with the dierent rates displayed.
again. The user button refers to the integration time set in the multipliers and settings
tab.
5.3.2 Graph
This tab of the quCNT module visualizes the count rates of the APD channels as a plot
against time (gure
). The values on the y-axis always indicate detections per second,
regardless of the selected integration time.
Besides the bar at the bottom, with same functionality as described in section
, the
Graph tab includes four new buttons. The Go button is used to start and stop the plot.
The Clear (Clr) button is used to erase the data in the plot. The autorange button
toggles autoranging of the y-axis and, nally, The button with the USB symbol (
) is
used for saving the plot data to a usb ash drive.
Because coincidence rates are usually much lower than single event rates, each of the rates
can be multiplied by an integer as described in section
. This factor is also shown in
the plot as can be seen in gure
(in this example a green x 2 close to the y axis).
5.3.3 Multipliers and Settings
As shown in gure
the Multipliers and Settings tab consists of various line edits which
can be used to change the multiplier of a rate. This factor is then applied to the count
quCR Manual Version 3.2 Page 12
