Engineering Abbreviations
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

'Oa' to 'Om', 'On' to 'Oz'

ONA - open network architecture
OP iLink - FireWire, Sony [Firewire Bus]
opm - operations per minute
OPMODEL - operations model
OPSEC - operations security
OPU - Optical channel Payload Unit
OPX - off-premises extension
OS - Operating System [OS Vendors]
OS2 - Operating System/2 [Out-dated IBM OS]
OSD - On Screen Display
OSHA - Occupational Safety and Health Administration
OSI - open switching interval
OSI - Open Systems Interconnection [OSI Definition]
OSI-RM - Open Systems Interconnection-Reference Model
OSP - Organic Solderability Preservation
OSRI - originating stations routing indicator
OSSN - originating stations serial number
OTA - Operational Transconductance Amplifier
OTAM - over-the-air management [automated HF network nodes]
OTAR - over-the-air re-keying
OTDR - optical time domain reflectometer [OTDR Gear]
OTES - Outside Thermal Exhaust System
OTN - Optical Transport Network [OTN]
OTP - One Time Programmable [Integrated Circuit]
OTS - Off-The-Shelf [COTS Definition]
OTU - Optical channel Transport Unit
OUM - Ovonics Unified Memory [Manufacturers of OUM IC's]
OVLO - Overvoltage Lockout
OW - OrderWire [circuit]

PC motherboard

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