Tektronix WFM8200, Руководство по обслуживанию

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Theory of Operation
The WFM8200 and WFM8300 are modular waveform monitors. They can be
con
fi gured, with options, to accept Analog Composite inputs. Audio options can
add inputs for digital only or analog audio capability.
All models use an internal DVI-I monitor for the display, and have an output to
drive an external monitor with the same display. All models also have outputs to
drive serial digital and analog picture monitors.
This theory of operation is mainly based on the High-level Block diagram. (See
Figure 2-1.) When necessary, other block diagrams may also be referenced.
The lower portion of the block diagram covers functions on the main board. The
upper sections cover those of the optional video input and audio boards.
The primary functions on the main board are:
Serial digital input processing
Reference input
Waveform processing engine
Rasterizing, recursion, and picture processing engine
Control processor and its associated peripherals
Auxiliary and ancillary data processing
Secondary power distributions
There are also miscellaneous circuits, such as the thermal control system for
the fan.
WFM8200 and WFM8300 Waveform Monitors Service Manual 2–1