The meter is an ergonomically designed, hand held instrument for measuring loop system performance. There are three calibrated operational modes for the assessment of Background Noise, Field Strength and Frequency Response, as required to ensure correct function of the loop system. The meter also doubles as a loop listener, with a headphone output to allow you to listen and subjectively assess the signal in the loop.

The unit is designed to be used by holding it in the same position as the hearing aid will be once the system is operational i.e. hold the unit at head height to take measurements - either seated or standing, depending on the venue.

3 calibrated operational modes:

Background Noise - To determine the level of the background magnetic field present in the intended location for the loop system. Also used to measure
low level signals to assess overspill outside a loop system. 

Field Strength - A broad band measurement to measure field strength delivered by the system.

Frequency Response - Third octave filters for measuring performance across the required frequency spectrum as required by IEC60118-4. Used to confirm adequate power at high frequencies as required for good intelligibility. Used to assess frequency dependent loss due to metal structures, and to optimise frequency compensation. 

The meter is supplied in a soft case with an audio CD with the required test signals, and full operating instructions, including a guide to commissioning.

The Ampetronic FSM can be used to monitor, set up or commission any induction loop system, regardless of the manufacturer or type.

Ampetronic product code: TFSM01

Features:

• Simple assessment of any system to IEC60118-4:2006
• Three modes of operation for three test types
• A weighted background noise
• Broad band mode (50Hz - 8kHz)
• Frequency response (100Hz, 1kHz, 5kHz)
• True RMS detection calibrated to 00mA/m = 0dB
• Wide viewing angle LED display
• Colour coded LEDs for simple readout
• Resolution to 1dB
• Head phone output with volume control
• Ergonomic, rugged, light weight construction
• Test signals supplied on CD
• Soft carry case

Applications include:

• Accurate set-up and commissioning
• System monitoring and maintenance
• Site surveys
• Certification to IEC60118-4:2006
• Assessment of frequency losses due to metal
• Assessment of loop coverage and overspill
• Assessment of background noise

Click here to view PDF user guide