Photron Fastcam MC1, Hardware Manual

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Chapter 3. Recording
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7. Output the signal from the synchronization device, and verify that the camera recognizes the
output frequency and synchronizes its frame rate. The recognized frame rate will display in
the lower left of the video monitor.
The frequency of the synchronization signal cannot be changed during the LIVE or recording state.
(This is out of spec assurance.)
The synchronization signal can be changed if you repeat steps 1 through 7 after changing the
frequency.
If no synchronization signal is input, or the input signal is under 60Hz (50Hz), during steps 3-7, the
display shows “ NO SYNC INPUT ”.
The display will show 1 fps, which indicates that there is no synchronization signal present.
If steps 3 through 7 are set with inputting signal over the capacities of each model, the display
shows “OVER SYNC INPUT” .
The LED on the front of the camera controller indicates that the synchronization signal is being
input. If the synchronization signal is lost, the LED will extinguish.
A minute error occurs in the input synchronization signal due to the construction of the internal
circuitry of this function.
For the FASTCAM MC1 , an error of ±1 Hz can occur.
For example, when performing external device synchronization inputting a synchronization signal
of 10000Hz, the error is: 10000 Hz ±1 Hz = 9999 fps to 10001 fps.