The Ampetronic ILR3+ hearing loop tester / receiver is designed to perform the same induction receiver function as the ILR3 whilst also providing the added capability to check that the induction loop is functioning correctly.
When an induction loop is installed the venue manager or staff should always be supplied with at least one instrument that allows them to regularly monitor the system performance. The IR3+ performs this task without the added cost and complexity of a Field Strength Meter. It is simple and highly cost effective, and meets the requirements of the international loop performance Standard, IEC60118-4.
No technical skills are required to perform the basic checks, which allow an operator to listen to the system through headphones, and check that the sound level provided by the loop is sufficient.
The loop checking system comes with an easy to follow procedure for checking any loop system.
The ILR3+ is designed to make it simple for anyone to regularly check that a loop system is working, has a field strength of the correct level to provide benefit, and meets the IEC60118-4 standard.
As dictated by the international standard, the ILR3+ has two indicators and these are calibrated to illuminate when the field strength is 400mA/m (0dB) or higher (GREEN) and between 200 and 400mA/m (-6 and 0dB) (YELLOW)
The status of the loop can be easily checked by running continuous speech or music into the loop and monitoring the indicators when the ILR3+ is held in the appropriate location. A simple table on the back of the ILR3+ shows what is acceptable or not.
The ILR3+ hearing loop tester / receiver comes with a simple user procedure to help guide anyone through the checking process. Using the ILR3+ requires no special knowledge of loop systems or any technical knowledge.
The ILR3+ is ideal for regular use by a facilities manager or non-technical member of staff. Regular use will ensure that the provider of the service keeps the loop system working and providing a genuine benefit to the hard of hearing. The ILR3+ is an essential companion to any loop system installation.
The ILR3 incorporates a low cut filter. Switching the low cut filter on attenuates the low frequency (bass) components of the signal emulating a typical hearing aid response and helps reduce the annoying ‘buzz’ caused by some AC power circuits.
For best reception in general use and where there is no low frequency interference, the ILR3 should be used with the ‘flat’ frequency
|Frequency response||Standard: Flat 85Hz – 6kHz ± 0.5dB|
|Low Cut: 400Hz – 6kHz – 3dB (similar to hearing aid)|
|Output power||>100mW into 16Ω load|
|Battery powered||2 x Alkaline AA (included)|
|Battery life||>100 hours with Alkaline batteries|
|Indication||‘Good’ 0dB Green LED 400mA/m rms with sine|
|‘Okay’ -6dB Amber LED 400mA/m rms with sine|
|Dimensions||width 62mm, depth 26mm, height 112mm|
|Temperature range||IP20 : 20 to 90% relative humidity, -10 to 45ºC|
Stereo headphones impedance 32Ω per side (included)
The ILR3+ is CE marked to all relevant safety and EMC standards.