Here are many of the abbreviations and acronyms commonly used with compliance testing.
| A | |
| A | Ampere |
| AC | Alternating Current |
| aH | Ampere Hour |
| AM | Amplitude Modulation | C |
| C | Capacitance |
| CEN | European Committee for Standardization |
| CENELEC | European Committee for Electrotechnical Standardization |
| CISPR | Comité International Spécial des Perturbations Radio (International Special Committee for Radio Protection) |
| CL | Current Loop |
| cm | centimeter |
| CSA | Canadian Standards Association |
| CW | Continuous Wave | D |
| dB | DeciBel |
| dBA | Decibel per Ampere |
| dBm | Decibel (1 milliwatt ref) |
| dBV | Decibel per Volt |
| DC | Direct Current |
| DMM | Digital MultiMeter |
| DOD | Department of Defense |
| DPDT | Double Pole Double Throw |
| DPST | Double Pole Single Throw |
| DVM | Digital Volt-Meter | E |
| E-Field | Electric Field |
| EHF | Extremely High Frequency |
| EIA | Electronics Industries Association |
| EIRP | Equivalent Isotropically Radiated Power |
| ELF | Extremely Low Frequency |
| EMC | Electromagnetic Compatibility or Electromagnetic Compliance |
| EMI | Electromagnetic Interference |
| EMP | Electromagnetic Pulse |
| EN standards | European Standards |
| ERP | Effective radiated power or equivalent radiated power |
| ESA | European Space Agency |
| ESD | Electrostatic Sensitive Device or ElectroStatic Discharge |
| ESR | Equivalent Series Resistance |
| ETSI | European Telecommunications Standards Institute |
| F | |
| F | Farad |
| FAA | Federal Aviation Administration |
| FCC | Federal Communications Commission |
| FET | Field Effect Transistor |
| FFT | Fast Fourier Transform |
| FM | Frequency Modulation | G |
| GFCI | Ground Fault Circuit Interrupter |
| GHz | giga Hertz |
| GND | Ground |
| GPIB | General Purpose Interface Bus |
| GPS | Global Positioning System |
| H | |
| HF | High Frequency |
| H-Field | Magnetic Field |
| HPIB | Hewlett Packard Interface Bus |
| HVPS | High Voltage Power Supply |
| Hz | Hertz (frequency in cycles per second) |
| I | |
| I | Current |
| IC | Integrated Circuit |
| IEC | International Electrotechnical Commission |
| IEEE | Institute of Electrical and Electronics Engineers |
| I\O | Input/Output |
| IR | Infrared |
| J | |
| JFET | Junction Field Effect Transistor |
| JIS | Japanese Industrial Standard |
| K | |
| kHz | Kilo Hertz (1000 cycles per second) |
| KW | Kilo Watts |
| KWH | Kilo Watt Hours |
| L | |
| L | Inductance |
| LAN | Local Area Network |
| LC | Inductance and Capacitance |
| LCD | Liquid Crystal Display |
| LED | Light Emitting Diode |
| LF | Low Frequency |
| LO | Local Oscillator |
| LW | Long Wave |
| M | |
| M | Meters |
| mAH | milliAmpere-Hour |
| MB | MegaBytes |
| MHz | MegaHertz (million cycles per second) |
| MIL | Military |
| MIL-STD | Military Standard |
| MIL-STD | Military Standard |
| mm | millimeters |
| mW | milliwatt |
| N | |
| NC | Not Connected or Normally Closed |
| NEG | Negative |
| NEMA | National Electrical Manufacturers Association |
| nF | NanoFarad |
| NiCad | Nickel Cadmium |
| NiMH | Nickel Metal Hydride |
| NIST | National Institute of Standards and Technology |
| NO | Normally Open |
| NPR | Noise Power Ratio |
| NPR | Noise Power Ratio |
| O | |
| OEM | Original Equipment Manufacturer |
| OPAMP | Operational Amplifier |
| OSHA | Occupational Safety and Health Administration |
| OVP | Over Voltage Protection |
| P | |
| PA | Power Amplifier |
| PCB | Printed Circuit Board |
| PEP | Peak Envelope Power |
| PG | Power Gain |
| PLL | Phase Locked Loop |
| PM | Pulse/Phase Modulation |
| POV | Peak Operating Voltage |
| PWM | Pulse Width Modulation |
| PWR | Power |
| Q | |
| QA | Quality Assurance |
| QC | Quality Control |
| R | |
| R | Resistance |
| R&D | Research and Development |
| RADAR | RAdio Detection And Ranging |
| RC | Radio Control |
| REACH | Registration, Evaluation, Authorisation and Restriction of Chemicals |
| RF | Radio Frequency |
| RFI | Radio Frequency Interference |
| RH | Relative Humidity |
| RL | Return Loss |
| S | |
| S/N | Signal to Noise |
| SD | Standard Deviation |
| SD | Standard Deviation |
| SG | Signal Ground |
| SHF | Super High Frequency |
| SI | Signal Integrity |
| SMD | Surface Mount Device |
| SNR | Signal to Noise Ratio |
| SMT | Surface Mount Technology |
| SP | Signal Processor |
| SPDT | Single Pole Double Throw |
| SPST | Single Pole Single Throw |
| SSR | Solid State Relay |
| SVHC | Substance of Very High Concern |
| SW | Short Wave |
| T | |
| TC | Temperature Coefficient |
| TDR | Time Domain Reflectometry |
| TEM | Transverse ElectroMagnetic |
| TEMPEST | Telecommunications Electronics Materials Protected from Emanating Spurious Transmissions |
| THD | Total Harmonic Distortion |
| TM | Transverse Magnetic |
| TR | Transient Response |
| TRP | Total Radiated Power |
| TV | Television |
| TWT | Traveling Wave Tube |
| U | |
| uF | micro Farad |
| UHF | Ultra High Frequency |
| UL | Underwriters Laboratories |
| UPC | Universal Product Code |
| USB | Universal Serial Bus |
| UTC | Universal Time Code |
| V | |
| V | Volt |
| VA | Volt Ampere |
| VAC | Volts Alternating Current |
| VCC | Supply Voltage |
| VCO | Voltage Controlled Oscillator |
| VDC | Volts Direct Current |
| VHF | Very High Frequency |
| VLF | Very Low Frequency |
| VR | Voltage Regulator |
| VSS | Supply Voltage |
| VSWR | Voltage Standing Wave Ratio |
| W | |
| W | Watts |
| WH | Watt Hour |
| X | |
| XMT | Transmit |
| XTAL | Crystal |
