3-39
Control Module Description
Timed Aux Output Module (064852) (Slot D3)
The basic function of the Timed Aux Output Module (TAO) is to provide four sets
of aux video/key outputs in time with the program output to feed an external
DVE. These signal can then be manipulated in the DVE and sent back to the
switcher.
There are eight identical channels on the module. In one typical channel, the aux
bus signal arrives from the Crosspoint Module. The signal is de-serialized,
descrambled, and presented to a RP-125 decoder ASIC.
The ASIC is used in a standard fashion to re-synchronize and demux the signal.
The timing signal is also used to provide delay information to a pair of HSP-9501
delay lines. The delayed Y and C components of the signal are muxed together by
RP-125 encoder. Finally, the signal is scrambled and serialized.
The Timed Aux Control Module(064855) (latches the VID Data and control data,
and sends it on the backplane to the Timed Aux Output module. The Timed Aux
Mezzanine (064854) is mounted on the double-wide Timed Aux Output module
located in cell D2 and D3.
NOTE:
Note that the TAO module will not work on the Extender Module.
Control Module Description
In the Signal Processing Frame there are two Control Processor Modules (Control
Processor 1 and Control Processor 2).
The multiple microprocessors are designed to prevent total loss of system control
if one of the processors fails. To accomplish this some of the modules have address
and data buses for more than one processor. If one of the processors fails, the rest
of the system continues to function but with some reduced capability.
The control signals begin in microprocessors present in the control panel. The
pushbuttons and shaft encoders of the control panel are scanned and any change
in the status of the controls is noted by the appropriate controller and sent to the
Control Processor Modules in the signal processor frame.
The Control Processor Modules interpret these signals and send each of the
modules in the signal processing frame the correct signal to do the requested
operation. Information programmed in the system (i.e. which input is assigned to
which pushbutton) is stored on the Control Processor Modules and is called upon
to interpret the information from the control panel.
M/E 1 control is handled by the M/E Mezzanine Board (068916) installed on
Control Processor 1 (064805).
M/E 2 control is accomplished by the M/E Mezzanine Board (068916) installed on
Control Processor 2 (064806).
M/E 3 control is accomplished by the M/E Mezzanine Board (068916) installed on
Control Processor 2 (064806).
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 ...
Page 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
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 ...