Photron Fastcam SA2, Руководство по оборудованию

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53 FASTCAM SA2 / SA2 RV Hardware Manual
 For the LCD Remote Controller (Optional)
1. Input the synchronization signal from the device that generates the signal to the system.
Connect the synchronizing device’s output signal to the system’s SYNC IN connector using a
BNC cable.
2. When the synchronization signal is input to the SYNC IN connector, the SYNC IN LED
(yellow) on the rear of the system illuminates. (* If the synchronization signal is lost, the LED
goes out.)
3. Press the LCD remote controller's MENU key and the menu list is displayed.
4. Select SYNC IN from the SYNC IN/OUT submenu with the LCD remote controller's ARROW
keys and press the ENTER key.
5. Use the LCD remote controller's ARROW keys to select the input signal. Select ON OTHERS
POS (positive polarity) or ON OTHERS NEG (negative polarity) according to the polarity of
the external synchronization signal.
6. When the setting is complete, press the ENTER key to finish.
7. Output the signal from the synchronization device and verify that the system 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 LIVE or recording. (This is
out of spec assurance.) The synchronization signal can be changed if you repeat steps 1 through 7
after inputting the changed frequency. The system is reset.
 If no synchronization signal is input or the input signal is under 60Hz (50Hz) during steps 3 to 7, or
the synchronization signal is lost, the display shows "NO SYNC INPUT".
If steps 3 through 7 are done inputting a signal over 86,400Hz, the display shows "OVER SYNC
INPUT".
In either case, you cannot record normally.
 A minute error occurs in the input synchronization signal due to the construction of the internal
circuitry of this function.
An error of ±18.5 ns occurs for the input synchronization signal in the actual operation.
Since the frame rate display value on the monitor is in 1Hz units, the error may be shown larger than
the actual operation (an error of about
±
1-5Hz is produced).
For example, when performing external device synchronization inputting a synchronization signal
of 10000Hz, the monitor display error is:
10,000 Hz ±1Hz = 9,999 fps to 10,001 fps.