Theory of Operation 7
S-Series Oscilloscopes Service Guide 107
Theory of Operation
This chapter describes the basic structure of the Infiniium S-Series oscilloscope
and how the parts interact.
The Infiniium S-Series oscilloscopes are comprised of three main assemblies: a
motherboard assembly, an acquisition assembly, and a front panel assembly. Each
oscilloscope also has several fans.
Users can interact with the oscilloscope and connect signals through the front
panel and the right side panel of the oscilloscope.
The front panel provides:
• Dedicated knobs and pushbuttons for major oscilloscope functions
• A 15-inch, 1024 x 768 pixel, XGA, color, capacitive touch display with LED back
lighting for measurement, waveform, and user interface display
• Two front panel USB ports
• Four precision BNC connectors for channel input signal
• An MSO cable connector
• An AutoProbe interface for probe power and probe control
• A connection for probe compensation and ground
• The power button
The right side panel provides:
• Auxiliary Trigger Output BNC
• 10 MHz Reference Input BNC
• 10 MHz Reference Output BNC
• Auxiliary Trigger Input BNC
• Trigger Out BNC
•Removable hard drive
•AC plug
• Connections to the motherboard
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