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Time Tagger 20
I want to use falling edges in my experiment. How do I do that?
On the software level, the falling edges are independent channels. In the web application, these are marked explicitly. In the software libraries, the number of a falling edge channel is the physical channel + 8, e.g., the falling edges of the physical channel 2 correspond to the software channel 10. See the Time Tagger 20 user manual for more details.
In some measurements I can specify optional channels. What value should I pass when I don't want to specify an optional channel?
You can specify a special integer value explicitly, but this is not recommended. Use the predefined constant
CHANNEL_INVALIDinstead. For C++, the constant is defined in
TimeTagger.hand is called
CHANNEL_INVALID. In python, it is