If All You've Got Is a Gizmo,
You've Got a Long, Long Way to Go
By David Lapovsky

	Ratings System Components Introduction Sampling Panel Balance Data Processing Station Encoding and/or Monitoring Operations and Production Sample Weighting Useful Reports Multiple Market Measurement Client Service Support for the Industry MRC Accreditation Print-friendly: Click here to print entire document.

Station Encoding and/or Monitoring
Performance Depends on the Quality of the System

If a meter system uses audio encoding as the basis for channel identification, there must be a documented set of procedures for assigning and maintaining the codes, and a comprehensive monitoring plan so that the service and its clients can know in real time that codes are being properly generated. If the meter system uses monitoring sites for matching station audio to samples collected by the meter, there must be a documented plan for maintaining and safeguarding the monitoring sites to make certain that they perform around the clock with perfect reliability.

Arbitron’s PPM system uses an unique, inaudible code that’s embedded within the audio signal. Arbitron’s full-time staff of engineers and technicians works with stations to assure that encoding is taking place. Encoding is also monitored real time so that any malfunction is promptly reported and rectified.

PPM™ is a service mark of Arbitron Inc.