The Hearing Loop System 2A features a DM2 Induction Loop driver in a steel enclosure. The unit is designed to be integrated into communication systems such as elevators, intercoms, help points and kiosk systems etc. It is backed by Ampetronic’s 5-year warranty and free technical support.
The HLS-2A uses efficient class D current drive technology to reduce power consumption and heat output. It is one of only a few small area induction loop driver capable of reliably driving most practical local area loops to meet the IEC60118-4 Standard even where available power or allowable heat is limited, e.g. connecting to equipment that uses PoE PoE. The transformer isolated balanced input allows simple connection to all intercoms, help points and kiosk systems, making the HLS-2A the obvious choice for any quality intercom system.
– Lifts / elevators
– Help & information points
– Refuge points
– Door entry systems
– Car parks & toll booths
– Security barriers & drive throughs
Power supply and consumption
12-24V DC: Typical local DC supply inside equipment where another supply is already present.
Whilst the HLS-2A draws less than 2.9W @ 12V DC with typical signals, you should still check that any existing supply has enough spare capacity.
The HLS-2A will allow an Audio Frequency Induction Loop system that meets the requirements of IEC 60118-4 to be created, if the system is specified, installed and commissioned in an appropriate manner, including observing Ampetronic instructions.
Datasheet & Specifications
All information specified on this datasheet has been complied in accordance with the IEC 62489-1: 2010 Standard and reflects actual performance in realistic applications.
Group connections to input 1/2 with DC power cabling. Keep the loop feed cable separate from other connections. When mounting, use appropriately sized screws for your installation application; and washers when necessary. The enclosure has two screw holes, these can be easily accessed by removing the front of the enclosure.
|Power Supply||Standard format: 12V DC|
|Nominal voltage:||12-24V DC|
|Min/Max Voltage:||8-30V DC|
|Power Consumption:||2.88W (240mA) continuous pink noise
9.2W (765mA) continuous sine
(0.17W (14mA) quiescent Power Save
14.4W (1200mA) max short term peak
|Indication:||LED on PCB|
|Input 1 & 2||Connector:||
Wago 2060 cage clamp for 0.2 – 0.75mm2 solid core or untinned fine stranded wire
|Line Level||Rated source impedance:||1.8kΩ differential,|
|Lo Z speaker||Input isolation:||1500V|
|Rated source EMF (sensitivity):||-16dBu for full output|
|Adjustment:||Level control, per channel|
|Loop Output||Compliance voltage:||4.2VRMS (6Vpk)|
|Max output current (sine):||3ARMS|
|Rated temperature limited output current (pink):||1.5ARMS|
|Rated time for delivery:||1min|
|Current Adjustment:||Full range|
|Current Indication:||LED indicates 1ARMS|
|Connector:||Wago 2061 cage clamp for 0.5 – 1.5mm2 solid core or untinned fine stranded wire.|
|Loop Impedance||0.3Ω – 1Ω, 1.3Ω reactive at 1.6kHz|
|Rated Load:||80uH, 0.5R|
|Freq. Response||100Hz to 5kHz ±1.5dB relative to 1kHz at low level, measured as loop current with no metal loss correction.|
|Compression||Time constants optimised for speech|
|Control:||by adjusting input level/gain|
|Indication:||LED on PCB|
|Metal Loss||0dB to 3dB / octave boost|
|Height||18mm including mounting|
|Environment||IP22: <90% relative humidity, -30 to 75 °C|
|Heat dissipation <3W maximum, normally less|
The HLS-2A is CE marked to indicate compliance with relevant product safety and EMC standards.