Cornelius DPC 230 Specifications download pdf (Page 51)

System Parameters of the DPC-230 45

full. Although this may slow down the data transfer from the SPC module the loss is by far

smaller than for memory swapping.

You may switch off the storing of the time-tag data altogether. However, in this case the soft-

ware discards the raw data and delivers (and stores) only the results specified under ‘Config-

ure’ and. It is then impossible to run any later data processing on the single-photon data. The

option should therefore be used with care.

Name of Time-Tag Data File

During the measurement, the time-tag data are stored in a temporary file. The final data file is

written when the measurement has been completed. The name of the time tag file time-tag

data file is therefore specified at the end of the measurement. The definition panel is shown in

Fig. 73. A list of previously used data file names is available by clicking on the symbol.

Fig. 73: Definition of the name of the time-tag data files

Configuring the Runtime Display

The SPCM software runs online processing on the incoming DPC data. The functions to be

calculated on-line are shown in the field under ‘Run Time Display’. The run time display can

be configured by clicking on the ‘Configure’ button. This opens the panel shown in Fig. 74.

Fig. 74: Configuration panel for the runtime display. Left without, right with fitting of FCS data

The available on-line functions are

- Calculation of decay curves (photon density distributions) for the individual detectors

- FCS by a linear-τ algorithm with subsequent binning or FCS by a multi-τ algorithm. The

maximum time up to which the correlation is calculated is defined by ‘Correlation Time’.

- Fluorescence cross correlation between different detectors. (Use the 2D Trace parameters

to define the detector channels)

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Cornelius DPC 230 Specifications Page 51