Grass Valley DHP v.1.1 - Manual (Page 9)

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Introduction
Chapter 1 provides a brief introduction to DHP and the NV8500.
Topics
NV8500 Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DHP Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NV8500 Review
You may safely skip this section if you are familiar with the NV8500 routers.
The NV8500 family of routers comprises 4 routers:
• NV8144 — 8RU, 144×144 video matrix
• NV8140 — 8RU, 144×288 video matrix
• NV8280 — 16RU, 288×576 video matrix
• NV8576 — 32RU, 576×1152 video matrix
• Stand-alone NV8576-Plus — 32RU, 576×576 video matrix
• Expanded NV8576-Plus — Two 32RU frames, interconnected, 1152×1152 video matrix
The routers in the NV8500 family switch both video (SD, HD, 3Gig), and audio (AES sync and
async). The routers support two classes of input and output cards:
1 Standard — video (SD, HD, 3Gig rates automatically detected), or AES (async).
(The NV8140 does not support AES async at this time.)
2 Hybrid — combining audio with video (SD, HD, 3Gig).
There are disembedder cards (that extract audio from video input).
There are embedder cards (that insert audio into video output).
There are MADI
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input and output cards. MADI input cards have 8 video inputs and one
MADI input. MADI output cards have 16 video outputs and two MADI outputs. For the
NV8576-Plus, there are expansion output cards that have 8 video outputs and one MADI out-
puts.
If any hybrid I/O cards are present, the router is considered a hybrid router. All its control cards
and all its crosspoint cards must be hybrid cards. Otherwise, you can consider the router a stan-
dard router and all its control cards and crosspoint cards can be standard cards.
You can have a combination of the card types in your router. Standard input cards do not
disembed audio; standard output cards do not re-embed audio. With the hybrid cards, the
1. MADI (multi-channel audio digital interface) is time-multiplexed AES. The NV8500 supports 64-channel
and 56-channel MADI. A DIP switch configures a MADI output card for 56-channel mode. MADI input
cards accept any number of channels (up to 64).