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Section 1 — System Overview
Physical Description
Model 4000 Series electronic circuitry is contained on circuit modules in the Signal
Processor Frame and Control Panel.
Control circuitry is located in the Control Panel and in the top bay of the Signal
Processor Frame. There are four card cages referred to as ”bays” in the Signal
Processor Frame. For reference, the bays are referred to as “A” and “B,”
corresponding to the top and bottom front bays and “C” and “D,” corresponding
to the top and bottom rear bays.
In this manual and in other related documents, the circuit modules will be referred
to by the specific names and assembly numbers printed on them.
Control Panel
The Control Panel is the operator interface for the Model 4000 systems and
provides all operator controls for the two Mix/Effects and DSK systems.
Through the Control Panel, the operator performs all actions via mechanical
buttons and controls, or through software controlled menus and soft button
adjustments. The Control panel provides the data link to the Signal Processor
Frame.
Signal Processor Frame
The Signal Processor Frame is a large rack-mounted unit, (see
houses all of the signal processing modules along with some control processor
modules.
The Head-of-State (HOS) processor and all M/E processors reside on two Control
Processor modules in Bay A (top bay) of the frame. Control Processor 1 contains
the HOS processor which supervises the state of the switcher, handles
communication with the Control Panel and controls the video hardware. The M/
E 1 processor also resides on this module.
The Control Processor 2 contains the circuitry for communication with the editor,
tally expansion and other remote control. The M/E 2 and M/E 3 processors are on
this module.
Since each M/E has its own processor, failure of the HOS processor does not shut
down the entire switcher. Individual M/Es can continue to operate independently,
although in a degraded capacity (cuts, mixes and fade- to-black continue to
operate).
The Control Panel communicates with the Signal Processor Frame over
RS-422 data links, one per M/E plus a flip/flop mix data link. Each of the links is
contained within a single cable that may be up to 1000 feet long.
Summary of Contents for Grass Valley 4000
Page 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
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Page 34: ...1 20 Section 1 System Overview ...
Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
Page 286: ...Index 6 Index ...