PicoQuant GmbH HydraHarp 400 Software V. 3.0.0.1
8. Appendix
8.1. Warnings
When the HydraHarp software is running with functional hardware it continuously collects
information about the input signals and the current acquisition settings. If these settings together
with the input rates indicate possible errors, the software will indicate this by means of a warning
icon.
While the software is running in interactive histogramming mode the warning icon is displayed at the bottom of
the main window in the status bar. In the case of TTTR mode, it will appear directly in the TTTR mode dialog.
The icon can be clicked to display a list of current warnings together with a brief explanation of each warning.
Note that the software can detect only a subset of all possible error conditions. It is therefore not safe to
assume “all is right” just by seeing no warning. On the opposite, if any of the warnings turns out to be an
unnecessary nuisance, e.g. because your specific measurement conditions knowingly force it, you can disable
that warning via the general settings dialog (see section 6.7).
The warnings are to some extent dependent on the current measurement mode. Not all warnings will occur in
all measurement modes. Also, count rate limits for a specific warning may be different in different modes. The
following table lists the possible warnings in the three measurement modes and gives some explanation as to
their possible cause and consequences.
Warning Histo Mode T2 Mode T3 Mode
WARNING_SYNC_RATE_ZERO
No counts are detected at the sync input. In histogramming and
T3 mode this is crucial and the measurement will not work
without this signal. Note that at very low sync rates this warning
may occur spuriously due to the rate meter limitations. You may
want to switch it off in this case.
√ √
WARNING_SYNC_RATE_TOO_LOW
This warning should not occur with current software and
firmware. It is kept in this list for backward compatibility only.
Note, however, that there actually is a minimum sync rate of
about 0.25 Hz in histogramming and T3 mode. Due to the lower
limit of the rate meters this condition cannot be detected, hence
no warning is issued.
Page 61
To Next Page
Loading...