Campbell Company
AGPS User’s Manual
906-0001 AGPS User Manual Rev E
Page 14 of 14
© Dick Campbell Company 2015. All rights reserved
5
Appendix A: Acronyms, Abbreviations
& Definitions
Term
Meaning
Accessible
Pedestrian Signal
A device that communicates information about pedestrian signal in a non-
visual format such as audible tones, verbal messages, and/or vibrating
surfaces (MUTCD)
Adapter Plate
An aluminum plate that mounts to the base station to display crosswalk
signs.
Audible Beaconing
Use of sound to provide directional orientation and alignment information
in the clearance phase.
Audio File
A file format for storing digital audio data on a computer system.
Automatic Gain
Control (AGC)
An APS volume control that is automatically responsive to ambient
(background) sound.
Base Station
Fully integrated APS station that contains the Mico-controller, push button,
speaker, adapter plate
Clearance Interval
Indication
Tones sounding during the pedestrian clearance interval that are
differentiated from the WALK interval indicator (tones)
COM Port
Serial communication port
Extended Press
On APS, holding the pedestrian push button down from 1-3 seconds may
activate special features, including audible beaconing and extended
pedestrian clearance interval.
Night Mode
An alternate configuration typically used to control audio volume at night
time.
Signal Power
Interface (SPI)
Power source that interfaces with Pedestrian Signal Head power for Base
Station interface.
USB Port
USB connection on AGPS stations.
Utility
Computer software used to configure AGPS stations.
.wav file
An audio file format.