test signal
Equipment verification transmission
A test signal is a standardized audio or video transmission used to calibrate or verify equipment performance.
Television test patterns, color bars, and tone generators are test signals.
The familiar beep before emergency broadcasts is a test signal confirming the alert system works: This is a test of the Emergency Broadcast System.
- calibrationAdjusting for measurement accuracy
- toneQuality of sound
- sine waveSmooth periodic mathematical curve
- beepShort electronic tone
- frequencyRate of recurrence
broadcast · broadcast tower · pattern · color bars · static · bars · colorful · screen · Indian head · transmission · pulse · audio · video · standby · please stand by · off the air · dead air · tuning
- alertsalarm, alert, warning, notification, push notifications