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GENERAL
As your video system grows with the addition of new equipment, you eventually need to have all components operating in
synchronism. This means that each piece of video equipment is performing its video signal generation or processing task at
exactly the same time, on exactly the same part of the picture. When two or more devices are operating in exact
synchronism they are "genlocked".
The BSG-50 is an ideal "house sync" generator for genlocking small video systems, providing an economical means for
obtaining the most common "RS-170A" video timing signals, including blackburst, composite sync, composite blanking,
horizontal drive, vertical drive, burst flag, and color subcarrier. These signals are used to synchronize operation of various
video switchers, special effects generators, VCRs/VTRs, cameras, monitors, video edit controllers, video titlers, time-base
correctors, SMPTE time code, and other types of professional video equipment. The BSG-50 can also operate with various
HORITA SMPTE time code reader/generators for striping video tapes with blackburst, SMPTE time code, and an audio
tone.
Most genlockable video equipment needs only a composite video signal, such as blackburst or composite sync to genlock,
while other equipment may require several individual video timing signals. Some video equipment has no provision for
genlocking.
Composite video is a single signal containing all necessary video and timing information. This information consists of the
black and white and color picture details, horizontal and vertical sync and blanking timing, and color synchronization
information. The horizontal and vertical sync and blanking signals define a precise border in which the actual picture detail
is located. You do not normally see this border on a monitor unless the vertical or horizontal controls are misadjusted. The
color synchronization signal (called colorburst) allows the color information to be decoded to produce the correct color
shades and intensities. Blackburst is an example of a composite video signal consisting simply of a black screen.
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FEATURES
The BSG-50 provides a total of twelve video timing signals for output, consisting of six blackburst, four syncs, and two
subcarriers. The user can select which of these signals are output on the six rear panel BNC connectors. When received
from the factory, the BSG-50 is set up to output six blackburst signals. The rack mount RM-50/BSG has two additional
BNC connectors and is set up to output six blackburst and two composite sync signals.
A special feature of the BSG-50 is that each of the four sync signals available for output can be individually set to be
composite sync, composite blanking, horizontal drive, or vertical drive. Additionally, one of the sync signals can be set to
burst flag. When outputs are changed from the factory settings, a special silkscreened area on the rear panel adjacent to
each BNC connector can be used to identify the output signal chosen for that individual connector.
In addition to the video timing signals, the BSG-50 also outputs a crystal controlled 1 KHZ, 0dB sine wave audio tone
which can be used for audio testing or audio level setup purposes.
The BSG-50 operates from a small AC power adapter which is included, or can be operated in the field from 9-to-13.5
volts DC battery power.
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CONNECTING AND OPERATING THE BSG-50
3.1 Connecting Power
Included with your BSG-50 is an AC power adapter that provides a 9 volt, 500 milliamperes DC output. This adapter is
equipped with a miniature phone plug with the "+" (positive) voltage output connected to the front tip of the plug.
Insert the power plug into the BSG-50 "+9V POWER" connector and plug the adapter into 110-120 volt, 60-Hz AC power.
WARNING
ELECTRICALLY OPERATED PRODUCT
As with all electrical products, precautions should be observed during handling and use to prevent electrical shock.