Grass Valley NV8500 Series v.3.5 - Manual (Page 50)

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Inputs and Outputs
Types of Input and Output
3Gig/TDM Input
For the NV8140
The 3Gig/TDM (i.e., MADI) input card supports 16 video signals and 2 separate MADI streams. If
the video has embedded audio, it is not disembedded, but passed through the router. Each
MADI input can receive up to 64 audio channels.
The router’s port numbering scheme associates 128 audio port numbers with a card.
This numbering applies to a MADI input card in any slot.
The input backplane supports the 16 video signals on 16 of its connectors and the MADI
streams on its 9th and 18th connectors.
A MADI input card in slot 1 provides audio ports 1–128 and video ports 1–16. The card in slot 2
provides audio ports 289–352 and video ports 19–26, and so on. Other audio channels in the
“space” of the card do not exist.
Consecutive MADI input cards increment by 18 video ports and 288 audio channels. Consecu-
tive cards follow the slot ordering for port numbers.
Slot Order for Port Numbering on page 37.
For Other Routers
The 3Gig/TDM (i.e., MADI) input card supports 8 video signals and a separate MADI stream. If the
video has embedded audio, it is not disembedded, but passed through the router. Each MADI
input can receive up to 64 audio channels.
The router’s port numbering scheme associates 64 audio port numbers with a card, unlike the
disembedder/embedder cards which associate audio ports with video ports.
This numbering applies to a MADI input card in any slot.
The input backplane supports the 8 video signals on 8 of its connectors and the MADI stream on
its 9th connector.
Thus, a MADI input card in slot 1 provides audio ports 1–64 and video ports 1–8. The card in slot
2 provides audio ports 145–208 and video ports 10–17, and so on. Other audio channels in the
“space” of the card do not exist.
Consecutive MADI input cards increment by 9 video ports and 144 audio channels. Consecutive
cards follow the slot ordering for port numbers.
Slot Order for Port Numbering on page 37.
3Gig/TDM Output
The 3Gig/TDM (i.e., MADI) output cards support 16 video signals and 2 MADI streams. The video
might have embedded audio, but it will have been passed through the router with the video.
Each MADI output can transmit 56 or 64 audio channels, switch-selectable.
The router’s port numbering scheme associates 128 audio port numbers with a card, unlike the
disembedder/ cards which associate audio ports with video ports.
This numbering applies to a MADI output card in any slot.
The output backplane supports the 16 video signals on 16 of its connectors and the 2 MADI
streams on its 9th and 18th connectors.
A 3Gig/TDM output card in slot 1 provides video ports 1–8 and 10–17 and audio channels 1–64
and 145–208. For this card, other audio channels do not exist.
Thus, a MADI output card in slot 2 supports video ports 19–26 and 28–35 and audio channels
289–352 and 433–496. A 3Gig/TDM card in slot 3 supports video ports 37–44 and 46–53 and