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12.2. Using external synchronization
12.2.1. Synchronization for the SS-HQ1 system
The SS-HQ1 system supports line lock, VS lock, VBS lock, V reset H reset, and other external synchronization
systems.
Internal mode (INT)
In this mode, external synchronization is not applied.
Line lock mode (LL)
In this mode, the camera's vertical phase is synchronized to the AC power supply. The power supply frequency
is 60Hz for NTSC and 50Hz for PAL.
VS lock mode (VSL)
There are three different VS lock mode types as detailed below. They are categorized based on the
synchronization signal and operation.
• VSL
In this mode, the camera's vertical and horizontal phases are synchronized to an external video signal. The
reset operation is performed in the vertical direction, and the PLL operation is performed in the horizontal
direction.
• VSL-S
In this mode, the camera's vertical and horizontal phases are synchronized to an external VD/HD signal.
The reset operation is performed in the vertical direction, and the PLL operation is performed in the
horizontal direction.
• VSL-D
In this mode, the camera's vertical and horizontal phases are synchronized to an external digital sync signal.
The reset operation is performed in the vertical direction, and the PLL operation is performed in the
horizontal direction.
VBS lock mode (VBSL)
In this mode, the camera's vertical, horizontal, and subcarrier phases are synchronized to an external video
signal. There are two different VBS lock mode types as detailed below. They are categorized based on the
synchronization operation.
• VBSLHP
In this mode, the camera's vertical, horizontal, and subcarrier phases are synchronized to an external video
signal. The reset operation is performed in the vertical direction, and the PLL operation is performed on the
subcarrier. In addition, the PLL operation is performed in the horizontal direction.
• VBSLHR
In this mode, the reset operation is performed in the vertical direction, and the PLL operation is performed on
the subcarrier. In addition, the reset operation is performed in the horizontal direction.
V reset H reset mode (VRHR)
In this mode, the camera's vertical, horizontal, and LALT (PAL) phases are synchronized to an external
VD/HD/LALT (PAL) reset signal.
188
- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
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