Grass Valley NV7512 v.1.3 - Manual (Page 11)

NV7512 Audio Router • User’s Guide 1
1. Introduction
The NV7512 router manages AES, 1 MADI and analog audio signal routing. This section discusses
the general features of the router, the power supply, signals supported, a description of all active
cards, and expandablity when using the router connected to other NV7512 routers. It is recom-
mended that you read this section to familiarize yourself with the router before starting any installa-
tion tasks.
Overview
The NV7512 Audio Router manages AES, MADI and analog audio signal routing. (See Signal
Types and Rates on page 4.) Each signal type is received and distributed through individual I/O
backplanes, allowing for the implementation of a wide range of audio signal switching configura-
tions. Due to NV7512’s architecture, AES synchronous stereo signals are separated into individual
channels, enabling the switching of mono channels independently within the router. Individual
mono channels can be recombined for distribution as new stereo signals.
The router can operate as a standalone router or interact with up to three additional connected
frames. A single NV7512 can route as few as 8 inputs and 8 outputs (AES synchronous signals at
192kHz) increasing to a maximum of 512 inputs and 512 outputs (AES synchronous signals at
48kHz). Using expansion ports, up to four routers can be connected together for a maximum rout-
ing capacity of 2,048 inputs and 2,048 outputs stereo (4,096 inputs and 4,096 outputs mono).
Because of the router’s extreme density, four connected frames take up less space than two industry
standard equipment racks.
In addition to routing several audio signal types, the NV7512 features an optional DSP sub-module
that performs input gain adjustment, phase inversion, crossfade and channel summing.
Mounting
The NV7512 mounts in a standard EIA rack at 14 RUs, 19 inches (482.6 mm) wide, and approxi-
mately 19 inches deep. Because of the router’s compact size, two routers can be mounted in a sin-
gle rack, saving facility space. For installation instructions, see
Rack Mount on page 33.
Fuses
Active cards feature a “fast blow” or resettable fuse. If the card requires a large amount of power,
the fuse is “fast blow” and must be replaced if blown. If the fuses are resettable, the fuses can be
reset by removing the card from the frame. For more information on fuses, see
Fuse Replacement
on page 100.
1. AES3-id.