SG4424 HDTV Slave Sync Generator User Guide
Short Description
SG4424. HDTV Slave Sync Generator. User Guide. INTRODUCTION. The SG4424LP HDTV Slave Sync Generator locks to either an NTSC or PAL reference signal and …
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Content
UG4424-00 ?June 2002
Page 4424-1
. 2002, NVISION, Inc.
SG4424
HDTV Slave Sync Generator
User Guide
INTRODUCTION
The SG4424LP HDTV Slave Sync Generator locks to either an NTSC or PAL reference signal and
generates HD tri-level sync per SMPTE 274M (1080i/p) and SMPTE 296M (720p). The HD format
is selected by an internal DIP switch. In addition, the generator provides three timing signals to assist
in post production. These include SD525i/60, SD625i/48, and Field 1 Line 1 vertical alignment pulse
which indicates when the 525i/60 and 625i/48 F1L1’s match (every 167 ms). The Divisor switch
drops all output field rates by 0.1% (1/1.001).
Key features of the module include the following:
?Multi-format HD tri-level sync generation
?Supports the following formats:
(i stands for interlaced, p for progressive, and sF for segmented frame.)
?Frame rate divisor (M = 1 or 1/1.001) controls all output rates
?Locks to NTSC or PAL reference input
?Provides three additional timing signals:
?SD525i/60 sync
SD625i/48 sync
Field 1 Line 1 alignment signal
?LED indicators for NTSC and…
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