Table of Contents
3 relations: Aperture priority, Aviation transponder interrogation modes, PDF/A.
Aperture priority
Aperture priority, often abbreviated A or Av (for aperture value) on a camera mode dial, is a mode on some cameras that allows the user to set a specific aperture value (f-number) while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by the camera's light meter.
See A mode and Aperture priority
Aviation transponder interrogation modes
The aviation transponder interrogation modes are the standard formats of pulsed sequences from an interrogating Secondary Surveillance Radar (SSR) or similar Automatic Dependent Surveillance-Broadcast (ADS-B) system.
See A mode and Aviation transponder interrogation modes
PDF/A
PDF/A is an ISO-standardized version of the Portable Document Format (PDF) specialized for use in the archiving and long-term preservation of electronic documents.
See A mode and PDF/A
References
Also known as A mode (disambiguation).

