3-40
Section 3 — Functional Description
DSK control is handled by the Head of State (HOS) Mezzanine Board (068919)
installed on Control Processor 1 (064805). The HOS processor has overall control
of the system.
Strobe: There is a strobe from the processor modules to each of the other modules
to select that module.
Batteries: Each of the processor modules has a lithium battery installed. They are
the power source for the battery backed up RAM when power is removed from the
module.
CAUTION
Be careful not to short out the battery. This can cause permanent damage to the
battery and loss of the data in battery backed up RAM.
Control Processor 1 Module (064805) (Slot A1)
The Control Processor 1 Module has three processors, one on the processor
module and one on each of two mezzanine boards.
The three processors do the following tasks:
Communications Processor 1:
■
Sends status information to panel
■
Controls modem port
■
Controls diagnostic terminal port
The Head of State (HOS) Mezzanine Board
■
Tracks switcher state information
■
Controls Program, Preset, DSK operation
■
Controls analog I/O configuration
■
Communicates with panel
■
Overall control of the system
Summary of Contents for Grass Valley 4000
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Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
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