SigNET FoSmeter AHHM field strength meter

SigNET AHHM

AHHM FoSmeter stand alone magnetic field strength meter gives a 10 segment LED indicator with 3bD steps to show the magnetic field strength relating to 100mA/m (indicated as 0dB).

Filter and Gain controls are provided to allow comprehensive accurate testing to be made whatever the installation. Powered by 9V PP3 type battery, the AHHM is a must have product for any loop installation engineer.

SigNET testers

Installed Induction Loop systems require careful testing and calibration prior to operation. The most effective way of doing this is to use the SigNET range of testers. BS7594 recommends that the minimum magnetic field strength of an IFILS system over its covered area should be 100MA RMS per metre. The SigNET range allows you to easily and effecively manage this requirement.

Specification

Dimensions 64(w)x101(h)x22mm
Controls: 1 x Power on/off switch, 1x filter switch, 1 x gain switch
Indicators 1 x power on LED, 10 x field strength LEDs
Battery requirements (not included) 1 x PP3

Induction loop systems

Induction loop systems make it possible for a deaf or hard of hearing person to make use of a service. You may have been a sign at a bank cashiers point or in restaurant, theatre or lecture classes, which says Induction Loop service, showing the bright yellow logo of an ear with letter T.

Market leaders in the UK are SigNET and Contacta, whose products ensure that organisations are meeting their legal requirements and also help provide customer satisfaction and loyalty where induction loop systems are installed. Hearing impared visitors will benefit in these environments from a greater clarity of sound and reduced levels of background noise.

The Disability Discrimination Act (UK) states that any business or organisation providing a product or service to the general public are required to install induction looop or infrared systems where it is possible or unreasonably difficult for a deaf or hard of hearing person to make use of a service. Furthermore, British Standard BS8300 (new code of practice for the design of new buildings and how they meet the needs of disabled people), says that a hearing enhancement service, for example an induction loop, should be installed in rooms and areas used for lectures, meetings, classes, etc.

How an Induction Loop system works: It allows a hearing aid user to receive signals picked up and transmitted directly to the hearing aid telecoil (T position), so that a person with impaired hearing will be able to overcome the difficulties of a noisy environment or poor acoustic space and hear more clearly. The loop is an insulated thin wire whch runs all around the perimeter of the room to be served, the size of the field required can vary depending on the application. The induction loop is severed by a driver amplifier which is fed from a microphone and/or sound amplification system.

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