Signet Induction Loop Field Strength Meter AHHM

A hand held field strength meter which will enable the accurate set-up and maintenance of audio-frequency induction loop systems in compliance with industry standards. Used in conjunction with a pink noise generator, this combined field strength meter and listening device is ideal for use on all types of installations. Straightforward to operate with a direct readout in ±3dB steps. Suitable for testing system compliance with BS7594.

Switchable gain setting
Normal or A-weighted filter
Powered by 9V battery (not supplied)

Headphone impedance should not be greater than 32Ω. The unit will not operate correctly using 600Ω types.

Switchable gain setting
Normal or A-weighted filter
Headphone output socket
Powered by 9V battery

A hand-held field strength meter which will enable the accurate set-up and maintenance of audio-frequency induction loop systems in compliance with industry standards.
Used in conjunction with a pink noise generator, this combined field strength meter and listening device is ideal for use on all types of installations.
Straightforward to operate with a direct readout in ±3dB steps.
Suitable for testing system compliance with BS7594.

Induction Loop

What are Induction Loops? Induction loop systems help hearing impaired people who use a hearing aid or loop listener to hear sounds more clearly by reducing or cutting out background noise. An induction loop is a cable that circles the listening area. It is fed by current from a loop amplifier. The amplifier gets its signal from a microphone placed in front of the person speaking or by means of a direct connection from another sound source, such as a sound system. The resulting electric current in the loop produces a magnetic field, which corresponds to the sound. You can then pick up this magnetic field if you are sitting within the area of the loop and your hearing aid - or loop listening aid - is switched to 'T'. You will need to adjust your own hearing aid for volume. More than one person can benefit from a loop installed in a room as long as they each have a hearing aid set to 'T', or a loop listener. You are not wired to any other equipment and you are therefore free to listen from anywhere within the loop and to move around.