Extron electronics VN-Matrix 250 Series, Руководство пользователя

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Definitions
PURE3 — is specifically designed for network transmission of real time media (such as
video or graphics, audio, data, and whiteboard elements). It features both spatial and
temporal image compression, which allows for efficient bandwidth usage.
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PURE3 streams always contain video or graphic elements.
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PURE3 streams can also contain audio and data content that is associated with the
video and graphic elements.
Media (stream) — refers to multimedia that is constantly received by (and normally
presented to) an end-user while being delivered by a streaming provider. Internet television
is a commonly streamed medium. Streaming media (stream) in this guide refers to a PURE3
media stream that is produced by a VN-Matrix encoding device.
Device license — refers to the number of licensed features that are available on a device
within a VN-Matrix system. All devices contain a license that offers a default level of
functionality. Device licenses cannot be modified.
Controller license — refers to the license that is set on the device designated as the
system controller. The controller license enables the use of VN-Matrix software decoders.
Controller licenses can be modified to suit changing system requirements.
UDP data — refers to the transfer of serial data between an encoder and a decoder. Data
input is created at the encoder, placed into the PURE3 stream, and sent to the decoder. The
data is received in the same form that it was transmitted. This method of data transfer is
unidirectional and can only be sent from an encoder to a decoder.
High-Level Interface (HLI) — is the command protocol that is used to communicate
between the VNM Enterprise Controller and an external control system.
Display Monitor Timings (DMT) — is a list of VESA standard pre-defined timings which
are commonly used within the computer industry.
Coordinated Video Timings (CVT) — is the newest VESA standard for generating display
timings (released on March 2003).
Generalized Timing Formula (GTF) — is a method of generating industry standard
timings used by a wide variety of display products.
Simple Instruction Set (SIS) — SIS commands consist of strings (one or more ASCII
characters per command field) that are used to communicate between a control device and
an Extron product.
Features
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Stream at native resolutions up to 1920x1200 and 2048x1080 — compatible with
signals used in high-resolution display applications.
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Low latency streaming — 35 ms encode and 35 ms decode — supports natural
interaction, bidirectional communication, or remote device control in real-time operating
environments.
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SFP port for use with optical Ethernet transceivers — provides the option to use
an optical Ethernet network interface to optically isolate a source or eliminate electro-
magnetic emissions in secure applications.
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Extensive bit rate management — uses compression and bit rate management
controls to tune image quality and bit rate to fit a variety of application and network
requirements.
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High immunity to network errors — AV streaming maintains reliable, high quality
imagery, concealing errors even during heavy packet loss.
VNM 250 • Introduction 6