Snell MV-32 - 2 Introduction; System Concept

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MV-32/64 Multiviewer www.snellgroup.com Introduction

2. Introduction

The MV-series multiviewers enable up to 64 channels of video to be viewed on a single

display device. However, each multiviewer has a pair of DVI-I outputs that may be

independently configured if required. The video inputs are auto-sensing for video sources,

see section 2.1.1 for details of the video input types supported by each card type.

Multi-definition standards up to 3G 1080p are supported. Comprehensive alarm functions,

audio metering and monitoring capabilities are also incorporated.

MV-32/MV-64 multiviewers are designed to optimize monitoring flexibility within the

multi-channel video environment, including video production, television broadcast, CCTV,

medical, aerospace, exhibition and conference applications. It is supplied in either single or

dual multiviewer configurations as a 3U rack mounting frame. The MV-32/MV-64 can be

connected to an optional external backup power supply (MV-Power). The MV-32/MV-64

multiviewers are easily controlled from a PC web browser hosted by the frame itself, either

directly via an Ethernet cable or over a network.

The MV-32/MV-64 multiviewers are can also be used as a multi-channel audio matrix,

de-embedder and analog to AES/EBU digital cross converter, depending on the I/O cards

fitted.

Various combinations of video/audio inputs can be configured. The maximum number of

audio outputs is 64 channels (using 2 x output boards). Any input may be routed to single or

multiple outputs.

2.1 System concept

The modular architecture is designed for scalability. Of the two 3U frame types available, the

single multiviewer frame (MV-64), is equipped with one controller (CPU), one Buffer card and

one power supply module (PSU). The dual multiviewer frame (MV-32) is centrally divided and

capable of housing two separate multiviewers, each with its own CPU and Buffer card. The

Buffer card generates the 5 Volt power and distributes it to the rear cards. The card also

buffers signals generated on the CPU (such as clocks, data and I

C) and distributes them to

the VIP cards and rears.

Each video input card handles 4 sources. The single MV-64 frame will accommodate up to 16

video cards, providing a maximum capacity of 64 video channels. The dual MV-32 frame

provides a maximum capacity of 32 video channels for each multiviewer (8 video cards per

side). The video cards include support for SDI embedded audio. If external audio interfacing

is required, audio input or output cards may be fitted. These will reduce the capacity available

for video cards in the MV-32 but the MV-64 has two dedicated audio slots in addition to

16 video/audio slots. A maximum of eight audio cards (any mix of input and output) can be

fitted in an MV-64 multiviewer.

The video input cards will simultaneously support sources of differing rate, for example, 50Hz

and 60Hz. However, synchronisation is achieved by frame add and drop rather than

standards conversion. The system rate is either locked to the reference signal provided or a

designated video input source.