from each preamplifier goes through a digitizer, and then into acquisition memory. The analog signal from
each preamplifier is also distributed to a trigger circuit.
Analog Front-end All of the analog and digital inputs are routed to the analog Front-end circuitry. The analog channels are
amplified and attenuated through the front-end circuitry
, and are output to the acquisition ASICs. The digital
channels simply pass through the front-end circuitry to the acquisition ASICs.
Power converter The Carrier interface assembly converts the +12 V power to all voltages used for the analog and digital
circuitry throughout the system. Standby power is used to keep portions of the system powered at all times
that AC power is connected to the instrument.
Other functions The Main board interfaces to the Power supply and various cooling fans.
Front panel and display
The Front Panel board contains digital logic that reads the front-panel buttons and controls and sends this information to the processor
system on the Processor board. The Front Panel board also generates the probe compensation output signal, provides USB ports on the
front panel and houses the main power switch. The front panel routes the digital front-end signals from the probe directly to the main
board.
Theory of operation
4 Series MSO (MSO44, MSO46) Service 13
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