HLS-2A hearing loop driver

HLS-2A hearing loop driver

Product Code: HLS-2A
Product DataSheet



HLS-2A in metal enclosure
 

Backed by Ampetronic’s 5-year warranty and free technical support, the Hearing Loop System HLS-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.

 
 
HLS-2A hearing loop driver

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. 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.

 Applications include:

  • Intercom systems for most environments:

– Lifts / elevators – Help & information points – Refuge points – Door entry systems – Car parks & toll booths – Security barriers & drive throughs

  • Information points & kiosks
  • Interactive exhibits

Features

  • Compact & lightweight. Ideal for low profile OEM integrations
  • Low power consumption & simple integration
  • Area coverage of up to 56m2. Two turn perimeter loop @ 1:1 ratio
  • Localised area loops. Counters, walls, panels etc
  • Low lifetime cost. Excellent reliability, 5 year warranty & free technical support
  • Power supply 12-24V DC
  • Transformer isolated inputs
  • Suitable for internal & external panel integration
  • Metal loss correction
  • Secure steel enclosure
  • Unrivalled intelligibility

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.

Loop Performance
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.

Installation Advice:
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.

Inputs

Power Supply Standard format: 12V DC  
  Nominal voltage: 12-24V DC
  Min/Max Voltage: 8-30V DC
  Fuse: 1.5A PTC
  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
  Overload: >+22dBu
  SnR: >90dB
  Adjustment: Level control, per channel

Outputs

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
  Rated THD: <1%
  Output Impedance: >9Ω
  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

Audio System

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  
(AGC) Dynamic range: >36dB
  Control: by adjusting input level/gain
  Indication: LED on PCB
Metal Loss 0dB to 3dB / octave boost  
Correction Adjustable  

Physical

Dimensions    
  Width 77mm
  Length 124mm
  Height 18mm including mounting
Weight 243g  
Environment IP22: <90% relative humidity, -30 to 75 °C
  Heat dissipation <3W maximum, normally less


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