Theory of Operation
WFM700 Series Waveform Monitors Service Manual
1- 5
The Main Interface board provides signal paths and communication paths
between all modules.
H
PCI Bus and Serial Control Bus are used for control and data transfer. Both
go to all slots. The PCI Bus is typically used for modules requiring
high-speed performance and communication between modules without the
use of the CPU board. The Serial Control Bus is used for modules requiring
less control and speed.
H
The Timing Bus is used to distribute the TRS signal to the Input Modules
and the RTD board.
H
The Audio Bus routes the digital audio signal (extracted from the video
serial input) to the module slots for use by future modules.
H
The Video Bus routes the parallel video signal (with clock and sync signals)
to the RTD slot from the two Input slots.
The Main Interface board provides power distribution, contains thermal sensors,
and contains the Environmental Controller (EC). The EC monitors the front
panel ON/STBY switch to control the main power supply (in the Power Supply
module) and monitors all low voltage power sensors for inaccurate voltage
levels.
The VGA Controller routes the video signal to both the LCD and the EXT VGA
output. This output can be used to drive an external monitor to produce the same
display as seen on the LCD.
External Connectors
H
EXT VGA. Provides an exact copy of the LCD screen to drive an external
monitor.
Main Interface Board
Summary of Contents for WFM700 Series
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Page 10: ...Table of Contents vi WFM700 Series Waveform Monitors Service Manual...
Page 14: ...Service Safety Summary x WFM700 Series Waveform Monitors Service Manual...
Page 19: ...Theory of Operation...
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Page 30: ...Theory of Operation 1 10 WFM700 Series Waveform Monitors Service Manual...
Page 31: ...Performance Verification...
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Page 88: ...Performance Verification 2 56 WFM700 Series Waveform Monitors Service Manual...
Page 94: ...WFM700 WFM7M Input Module Test Record 2 62 WFM700 Series Waveform Monitors Service Manual...
Page 102: ...WFM700 WFM7HD Input Module Test Record 2 70 WFM700 Series Waveform Monitors Service Manual...
Page 107: ...Adjustment Procedures...
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Page 132: ...Adjustments 3 24 WFM700 Series Waveform Monitors Service Manual...
Page 133: ...Maintenance...
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Page 160: ...Removal and Installation Procedures 4 26 WFM700 Series Waveform Monitors Service Manual...
Page 176: ...Repackaging Instructions 4 42 WFM700 Series Waveform Monitors Service Manual...
Page 177: ...Replaceable Parts...
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Page 194: ...Replaceable Parts 5 16 WFM700 Series Waveform Monitors Service Manual...