Components and Functions (Theory)
5-28 Invenia ABUS 2.0 – System Setup and Basic Service Manual
4700-0043-00 Rev. 4
Glossary
AAF Anti Aliasing Filter This is used to clean signals.
ADC Analog to Digital Converter Converts signals that are analog voltages
into digitally coded values
AFE Analog Front End Analog signal handling circuit. A custom
component in the ABUS 2.0 system.
BEP Back End Processor An alternate name for the PC in the
ABUS 2.0 system.
MFEPS Front end power supply Board that powers the Scan Head
DSP Digital signal processor The Texas Instrument DSP,
TMS320C6455 on the CMST board.
FE Front End Components of the system that are
functionally nearest the Scan Head are
referred to as front end components.
GPU Graphics Processing Unit A PC board dedicated to graphics
processing
LNA Low Noise amplifier An amplifier designed so that it does not
introduce much noise into low-level
signals
MCI Motor Control Interface The MCI board in the Ultrasound Box
relays control commands originating at
the PC for the Scan Head and Weight
Tower motors.
MPSB MPSB relay board Relay board switches the 128
channel-signals between handheld and
ABUS 2.0 port transducer. (Handheld not
used at present - future option)
PACS
PC Box Personal Computer Box This module contains the PC
motherboard and related components
PGA Programmable Gain Amplifier An amplifier whose gain can digitally
controlled
VCAT Voltage Controlled Attenuator A voltage divider whose ratio for dividing
down the input can be set electronically
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