Dual Pilot Tone Detector
B031
Introduction
2007 dB Broadcast Ltd
1
Version 0.8
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The B031 Dual Pilot Tone Detector module has dual balanced audio inputs with independent
detector circuits. It fits in 1U or 3U Vistek frames and power is derived from the frame
PSU(s).
The B031 Dual Pilot Tone Detector
The input impedance is selectable to either 600
or 50k
. The detection threshold is set by
DIL switches in 0.5dB steps from -10dB to -33dB and a further adjustment of +/- 10dB via the
front panel.
The front panel LED's indicate undelayed and delayed tone failure.
The undelayed tone indication will operate immediately tone is lost, and the delayed tone
indication will operate following tone loss for a preset time. The delayed tone indication will
extinguish once the signal returns continuously for a preset time period. The good to fail time
delay period can be adjusted in 1 second steps between 0-15 seconds. The fail to good time
delay period can be adjusted in 0.1 second steps between 0-1.5 seconds.
Undelayed remote status signals are provided as peripheral driver outputs and the delayed
remote status signals as isolated relay contacts.
The module is DART compatible and provides monitoring status to the DART Bus.