Tektronix Grass Valley 4000, Installation And Service

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Section 3 — Functional Description
Mixer Interface Module (064813)
The Mixer Interface Module:
■
Interfaces the Keyer Modules to the Mix/Wipe Modules and the optional
Effects Send Modules
■
The module in slot B 8 or B11 routes the video signals (key fill).
■
The module in slot B 12 or B14 routes the key signals.
There are two Mixer Interface Modules in the system. One for the video signals
and another for the key signals. If the Effects Send is not installed, this module
simply passes the video and key signals from the Keyer Modules to the Mix/Wipe
Modules. See
Figure 3-9 .
When Effects Send is installed, these modules act as a switch. If the switcher is in
normal mode, the Mixer Interface Modules switch the video and keys from the
keyer to the appropriate Mix/Wipe Module. If the switcher is in the Effects Send
mode, the Mixer Interface Module switches the appropriate video and key signals
from the Keyer Module to the Effects Send Module which sends the signals to the
DVE on optional timed aux bus outputs. Signals from the DVE are reentered into
the switcher on aux buses. These signals are routed back to the Effects Send
Modules where they are sent to the Mixer Interface Modules and on to the Mix/
Wipe Modules.
Figure 3-9. Mixer Interface and Effects Send
MIXER
INTERFACE
MODULE
Video
From
all
Keyers
EFFECTS
SEND
Video to Mixer Modules
Video
Keys from
other
Mixer Interface
Module
Video
to
Effects
Send
Aux 1, 2 Key
and Video to
DVE
Aux 1, 2
from DVE
Video from DVE
Video to
other Effects
Send Module
Key from DVE
To other Mixer
Interface Module
Effects Send Mode
Normal Mode