Alcorn Mcbride Digital Binloop HD, User Manual

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Alcorn McBride Binloop User’s Manual Page 12
A/V Sync System
The A/V Sync system plays a critical role in the operations of the
Binloop. This system is responsible for generating the Audio and
Video clocks used throughout the Binloop. Most notably, these clocks
are used directly by the reproducers to ensure that the video and
audio outputs are precisely synchronized with one another.
Configuration Options
This system has a few straight-forward, yet important, configuration
settings. The first of these settings, Video Format, configures the type
of video clocks to generate. There are only two options that cover the
primary video systems used throughout the world; NTSC and PAL.
The other setting is the audio sample rate, which determines how to
generate the audio clocks. Here’s a table that shows the settings that
are available to you.
Setting Options
Video Format NTSC, PAL
Sample Rate 32kHz, 44.1kHz, 48kHz, 96kHz
These settings can be configured using the Menu Wheel interface on
the front of the Binloop, as well as the Binloop Configuration software.
External V-Sync
The A/V Sync system always
generates the A/V clocks
regardless of whether or not an
external sync source is
present.
If you refer to the diagram earlier in this section, you will see that the
A/V Sync system allows for an optional external video sync source.
When a supported sync source is connected to V-Sync input of the
Binloop, the A/V clocks are locked directly to the source.
This input is designed to accept a Blackburst video sync signal. When
the A/V Sync system is successfully locked on to an external sync
input, the V-Sync status LED on the front of the Binloop will illuminate.
Keep in mind that the Video Format setting of the A/V Sync system
must match the video format of the Blackburst sync source. If it does
not, the A/V Sync system will not attempt to lock to the source.