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Table 4 Magnetic field characteristics from the sample WTMDs

From: Personal medical electronic devices and walk-through metal detector security systems: assessing electromagnetic interference effects

WTMD

Waveform

Frequency/pulse repetition rate

Pulse width (µS)

Rise/fall time (µS)

Absolute maximum field measured (A/m RMS)

WTMD-A

Multiple CW

3–14 kHz

N/A

N/A

21.3

WTMD-B

Pulsed

200–250 Hz

100–200

5–50

21.1

WTMD-C

27.9