Photron Fastcam BC2 HD, Hardware Manual

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3. Recording
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3.5.3. END Mode
END mode is a trigger mode where the content recorded immediately before the trigger is input is
saved to memory. This mode is suitable for recording a high-speed phenomenon where it is hard to
predict when the important action will start and stop. For example, in a situation with a maximum
useable memory of two seconds for recording, the two seconds of high-speed video immediately
before when the trigger was input are saved.
3.5.4. MANUAL Mode
MANUAL mode is a trigger mode, similar to CENTER mode, where the content recorded before
and after the trigger is input is saved to memory, but the proportion of time before and after the
trigger can be set as required. For example, in a situation with a maximum useable memory of two
seconds for recording, 0.5 seconds before and 1.5 seconds after the trigger is input are recorded
and saved, a total of two seconds of high-speed video.
3.5.5. RANDOM Mode
RANDOM mode is a trigger mode where each time a trigger is input only a predetermined number
of frames are saved to memory. For example, this function is convenient for a subject which is an
irregular and repeated phenomenon which can have trigger output produced for each cycle or
occurrence. The number of frames recorded each time the trigger is input can be set as desired, in
one frame increments, from one frame to the maximum of all the recordable frames available.