FlashPhone Digital Acoustic/ballistic detector is designed to pinpoint
the exact location of primary fault location when combined with a
capacitor impulse discharge unit (thumper). During the flashover at the
fault both a magnetic and acoustic signal is generated. There is a time
delay between these two signals and the FlashPhone displays this signal
as a number.
The closer you get to the fault will show a decrease in the number that
is displayed. The magnetic signal bar graph shows intensity (magnitude)
of the magnetic field generated by the thumper into the cable fault. It
also can be used to locate the correct cable route when the maximum bar
deflection is indicated. The microphone is designed to be used with an
earth probe for soft ground conditions and the flat ground contact can
be used on concrete or asphalt.