In all the webpages, placing your mouse over the acronym returns its definition

APSActive Pixel Sensor
ARActive Region OR Acceptance Review
ASICApplication-Specific Integrated Circuit
AUAstronomical Unit
BOLBeginning Of Life
CCDCharged Coupled Device
CEBCommon Electronics Box
CHCoronal Hole
CMECoronal Mass Ejection
CMOSComplementary Metal Oxyde Semiconductor
CORCoronagraph (of SO)
CPUCentral Processing Unit
DEMDifferential Emission Measure
DNDigital Number
EDMEUI Data Manager
EEPROMElectrically-Erasable Programmable Read-Only Memory
EIDExperiment Interface Document
EITExtreme-ultraviolet Imaging Telescope (SOHO)
EOLEnd of Life
EPDEnergetic Particle Detector of SO
EQMEngineering Qualification Model
ESAEuropean Space Agency
EUIExtreme UV Imagers
EUSExtreme UV Spectrometer
FEEFront End Electronics
FOVField of View
FPAFocal Plane Assembly
FPGAField-Programmable Gate Array
FSIFull Sun Imager
HRIHigh Resolution Imager
HRMHeat Rejection Mirror
HSHeat Shield
HVHigh Voltage
ICDRInstrument Critical Design Review
IDSRInstrument Design Status Review
IFARInstrument Flight Acceptance Review
IPDRInstrument Preliminary Design Review
IQRInstrument Qualification Review
LEDLight-Emitting Diode
MAGMagnetometer (of SO)
MARMultiple Adaptive Reset
MCPMicro-Channel Plate
MTFModulation Transfer Function
NASANational Aeronautics and Space Administration
NRTNear Real Time
PDMUPacket Data Management Unit
PFMProto Flight Model
PROMProgrammable Memory
PSFPoint Spread Function
QEQuantum Efficiency
QSQuiet Sun
RMSRoot Mean Square
RNReadout Noise
ROBRoyal Observatory of Belgium
RPWRadio and Plasma Wave Analyser of SO
RTCReal Time Control
SCSolar Constant
SOSolar Orbiter
SOHOSolar and Heliospheric Observatory (ESA/NASA)
SPPSolar Probe Plus
STIXSpectrometer/Telescope for Imaging X-rays (SO)
STMStructure and Thermal Model
SWASolar Wind Plasma Analyzer of SO
TBCTo be confirmed
TBDTo be defined
TRTransition Region
TRACETransition Region And Coronal Explorer (NASA)
UCLUniversity College London
VAULTVery high Angular resolution Ultraviolet Telescope
VIMVisible-Light Imager and Magnetometer