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Supports broadcast quality video formats (see table 1)
Table 1. Supported Video Formats
Video Format
SMPTE 424 / 425M SMPTE 292M SMPTE 259M
Resolutions 1080p @ 50/59.94/60 Hz 1080i @ 50/59.95/60 Hz
1080p@23.97/24/25/29.97/30 Hz
720p @ 23.97/24/25/29.97/30/50/59.94/60 Hz
525i @ 59.94 Hz
625i @ 50 Hz
Color space 10-bit, 4:2:2, YCrCb 10-bit, 4:2:2, YCrCb 10-bit, 4:2:2, YCrCb
Autodetection — The codecs auto-detect the format of the connected signal. Input sources
are encoded and decoded at their native resolution and format
Audio signal compatability — The codecs support the transport of embedded audio input
data, as described by the SMPTE 299M 24-bit digital audio and SMPTE 272M-A 20-bit digital
audio standards.
Configurable as encoder and decoder —
Encoder signal connections — The unit has three functional BNC connectors for video
connections; an input and two looped outputs.
Decoder signal connections — The unit has two functional BNC connectors for video
and sync connections.
Two levels of operator interface —
Low-level configuration — The Ethernet parameters of each codec in the system are
set using a PC connected to an RS-232 serial port.
Final configuration and operation — After the initial low-level configuration, all
other configuration and operation of the VN-Matrix 325 system is via either of two
Ethernet ports of the system controller unit. A computer that is running on the same
network as either port can control the entire system using the built-in HTML pages of
that unit.
System control — One codec unit in the system is designated as the system controller. The
unit acts as a server for the HTML control interface and holds a record of the configuration
of all VN-Matrix 325 devices on the network. The system controller manages the
communications to all VNC 325 devices. Any codec, whether it is configured as an encoder
or decoder, can be used as the system controller.
Two Ethernet ports — Each unit has two Ethernet ports for network connections:
One RJ-45 port for a Category (CAT) 6 twisted pair (TP) cable
One optical port for a fiber-optic cable
Two RS-232 serial ports —
Remote port — For low-level configuration of the Ethernet parameters of the unit.
RS-232 Over LAN port — For inputting and outputting RS-232 data with the coded
and decoded video, such as for control of projector. This port is also for access to the
built-in alarm relay.
VN-Matrix 325 Serial Digital Over IP CODEC • Introduction 3