Sun Microsystems XVR-1200, Installation And User Manual

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C H A P T E R
6
Framelocking Sun XVR-1200
Graphics Accelerators
This chapter describes framelocking multiple Sun XVR-1200 graphics accelerators.
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“Sun XVR-1200 Graphics Accelerator Framelock System” on page 43
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“Connecting the DB9 Port Framelock Cable” on page 45
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“Stereo DIN7 Port Framelock Cable” on page 47
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“Connecting the Stereo Port Framelock Cable” on page 48
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“Configuring Graphics Accelerators for Framelocking” on page 50
Sun XVR-1200 Graphics Accelerator
Framelock System
The framelock synchronization feature enables vertical retracing to occur
simultaneously on each Sun XVR-1200 graphics accelerator subsystem. Cabling is
required to framelock two or more Sun XVR-1200 graphics accelerator subsystems
for multiview. Vertical retrace synchronization eliminates flicker between
multiscreen displays. You can framelock two or more Sun XVR-1200 graphics
accelerator subsystems across one or more computer systems.
You can framelock two or more Sun XVR-1200 graphics accelerators through either
the DB9 ports or the stereo port. The DB9 port requires DB9 framelock cables and the
stereo DIN7 port requires a Y-shaped framelock daisy-chain cable with three
connectors. When longer cables are required for framelocking, framelock through
the stereo port using the Y-shaped daisy-chain cable.
The DB9 ports provide a more accurate way to framelock graphics boards because
the pixel clock is transmitted over the DB9 connector so that connected graphics
boards stay perfectly synchronized rather than drifting slightly over a frame time.