This function is used by default. It prints a message asking the operator to manually trigger a flash. A more elaborate function, using specific hardware can be used to automatically trigger a light source or some other synchronized event such as releasing the shutter of a camera.
Note
When using this function, set an integration time that gives enough time for the manual triggering of the flash to reliably fall within the integration.
See also
Sys.sleep
for a description of the variation
in the effective duration of the delay
.
Other interactive acquisition utility functions:
choose_ch_interactive()
,
choose_sr_interactive()
,
list_srs_interactive()
,
protocol_interactive()
,
set_attributes_interactive()
,
set_folder_interactive()
,
set_seq_interactive()
,
set_session_name_interactive()
,
set_user_name_interactive()
,
tune_interactive()