ILD20 To cover 20m²

ILD60 To cover 60m²

ILD122 To cover 120m²

ILD252 To cover 250m²

ILD9 To cover 500m²

SPECIFICATION

ILD20 INDUCTION LOOP DRIVER

The ILD20 Induction Loop Driver has been designed by AMPETRONIC for use in specialised applications.

The ILD20 is intended for the Service Counter / Ticket Counter/ Banking Counter market. It can also be used in a "Confessional" environment with the use of a special loop arrangement.

Furthermore, it can be used very effectively in small interview situations, in both normal local mode and in interview situations for interviewer / control room links.

The unit is designed to be installed in the counter situation with a special loop coil which is supplied as standard, but for other applications the unit should be used with SINGLE TURN loops of suitable wire size.

The unit can satisfy all the requirements of IEC118–4, EN60118–4, and satisfies all CE requirements for interference emission, immunity and safety.

New: ILD20DC
A purely DC powered version, operating on 12V is now available for mobile applications.

The unit can satisfy all the requirements of IEC118–4, EN60118–4, and satisfies all CE requirements for interference emission, immunity and safety.

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TECHNICAL SPECIFICATION

Microphone Inputs:

Two inputs with 3.5mm mono connector for electret microphones.

DC powering for electret capsules. Note: these inputs are not designed for use with balanced microphones (with XLR connectors). A special adaptor is needed to use these microphones.

Compression (AGC): Compression range 36dB to overload. Front panel indication. Attack and decay time constants optimised for speech.

Loop Current: >3 Amp peak signal into special coil or SINGLE TURN loop. Front panel LED indicates current peaks.

Loop Coil: Special coil for vertical mounting at the front edge of service counters. This coil cannot be used in close proximity to a metal panel. The coil is an open structure, having the following dimensions: 360 mm wide, 320 mm high, 7 mm Thick.

Area Coverage: The nominal area that can be covered for a rectangular loop is 20m² (210ft²). Where the loop is long and narrow. When metal is used in adjacent structures, significant losses may occur and a larger amplifier may be required. Please contact us for advice.

Frequency Response: 80Hz to 5 KHz ± 1.5dB at low level, measured as loop current.

Multi pole low pass filter rapidly attenuates signals above 5.5KHz.

AC Power Input: 230 Volt AC operation 50-65 Hz.

115 V AC version available.

Power consumption 15 VA Max.

Cooling:
The unit is designed such that the case acts as a heat radiator.

Dimensions : L193 mm, W 101mm, H 40mm.

Weight: 1.1 kg.

Accessories supplied
1 microphone (Varies dependent on use)
1 Loop Coil, with protecting board if required.
1 AC Input Power Cable.

CE Compliance: The equipment meets all the applicable EMC and safety standards.

Microphone Variations: Tie clip style microphone
Desk freestanding microphone
Boundary microphone

Loop Cable:
Selecting the right size loop cable depends on the size of the loop to be laid.

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SPECIFICATION

ILD60 INDUCTION LOOP DRIVER

The ILD60 Induction Loop Driver has been designed by AMPETRONIC for use in specialised applications.

The ILD60 is intended for a medium-sized room, and provides the full facilities required for a professional installation in such environments as small offices, meeting rooms and TV rooms in nursing homes, sheltered housing etc.

While not providing the range of controls and inputs of our professional equipment, the ILD60 can be used very easily in small interview rooms, for both local hearing and control room talkback. In particular, the use of low cost unbalanced microphones reduces cost without any serious penalty.

The unit is designed to be used with a SINGLE TURN loop of convenient wire size. The unit is also equipped with an input for direct connection to modern TV SCART facilities in order to obtain very good quality TV sound, without being affected by room noises and volume for normal listeners.

The unit can satisfy all the requirements of EN60118–4 (IEC118–4), and satisfies all CE requirements for interference emission, immunity and safety.

NEW: ILD60DC

A purely DC powered version, operating on 12V is now available for mobile applications.

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TECHNICAL SPECIFICATION

Microphone Inputs:

Two inputs. 3.5mm mono connector suitable electret microphones.

DC powering for electret capsules.VOX switch override from input 1.
NOTE: these inputs are not designed for use with balanced microphones (with XLR connectors). A special adaptor is needed to use these microphones.

Line Input: Impedance 60KO each side, 20KO differential. Sensitivity: matched to normal SCART signal levels.

Compression (AGC): Compression range 36dB to overload. Front panel indication. Attack and Decay time constants optimised for speech.

Loop Current: 4 Amp Peak signal current into special coil or SINGLE TURN loop. Front panel LED, indicates current peaks.

Loop Impedance: Designed for SINGLE-TURN loops, with DC resistance between 0.3O and 1O.

Area Coverage: The nominal area that can be covered for a rectangular loop is 60m² (650 ft²). The installation handbook gives information on loops of different aspect ratio. Where metal occurs in adjacent structures, significant losses may occur and the area will be much reduced, with severely affected frequency response. Please contact us for advice.

Frequency Response: 80 Hz to 5 kHz ± 1.5dB at low level, measured as loop current. High frequency high signal level response is a function of loop size, loop current and signal content to ensure that no RFI generation takes place. Internal time constants are very short.

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AC Power Input: 230 V AC operation 50-65 Hz.

115 V AC version available.

Power consumption 15 VA Max.

Cooling:
The unit is designed such that the case acts as heat radiator.

Dimensions : L 216mm, W 124mm, H 44mm

Weight: 1.3 kg.

Accessories supplied:
1 microphone (Varies dependent on use).
1 Connecting cable, SCART to 2 x Phono.*
1 AC Input Power Cable.

1 Quantity off loop cable to caver area.
*Alternative connecting cable may be supplied for some markets.

CE Compliance: The equipment meets all the EMC and safety standards applicable.

Microphone Variations:
Tie clip style microphone
Desk freestanding microphone
Boundary microphone

Loop Cable:

Selecting the right size loop cable depends on the size of the loop to be laid.

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The ILD122 Induction Loop Driver has been designed for a wide range of applications such as small churches, small conference rooms, meeting rooms, etc. The equipment maintains the traditional Ampetronic high quality vocal and music reproduction, while adding new features to improve performance and operational facilities.

The ILD122 has extensive monitoring and indication facilities. In addition to the LED metering of compression and loop current, the amplifier includes a loop checking feature that tests the loop for high or low resistance at power-up and indicates any fault. Overload and over-temperature conditions are also monitored and indicated on the front panel.

In common with all Ampetronic's induction loop drivers, the ILD122 uses constant-current drive, which is necessary to achieve full compliance with national and international loop system standards. The equipment has safeguards designed in to ensure that all current EMC and safety standards are complied with under all practical operating conditions.

An integral metal loss corrector provides compensation for the frequency dependant loss caused by metal in building construction.
Contact Ampetronic for more information about the effect on loop design and performance of metal in building construction.

The picture below is the rear panel of the ILD122 which shows the connections.

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TECHNICAL SPECIFICATION

Microphone Input: XLR, balanced, low noise. 15V DC Phantom power (selectable). Sensitivity: -70dB at high gain -55dB at low gain. Overload level: -20dBu at high gain -5dBu at low gain. Line Input: 6.4mm Jack socket, fully balanced (unbalanced with mono plug). Sensitivity: -30dBu. Overload at +20dBu. High impedance input. Overload protected. Slave I/O: Insert point for connecting Ampetronic Phase Shifter, etc. Can be used as output for recording. Signal level 1V RMS (+2.7dBu). Preamp Power: ±15V DC max 0.3A for powering Ampetronic Microphone Preamplifiers and external processors. Metal Loss Corrector: Allows correction of system frequency response when losses occur due to metal in the building. Adjustable from 0 to 3dB per octave, using 1KHz as constant gain frequency. This does not compensate for the power loss caused by the metal. Top Compressor / AGC Control: 36dB control range, with attack / decay time constants optimised for speech. Front panel indication in 6 / 12dB increments. Loop Current: 5 Amp Peak. Absolute peak current >7A. Front panel indication in 2dB increments with PPM response. Output Voltage: Greater than 10V peak, to enable good frequency response with larger, inductive loops. Patented circuitry prevents clipping, to ensure full EMC compliance. Loop Impedance: Designed for SINGLE-TURN loops, with DC resistance between 0.2O and 1O. Area Coverage: The nominal area that can be covered for a rectangular loop is 120m² (1300 ft²). Where the aspect ratio is narrow and long, see handbook. If losses occur due to metal or unusual loop position, then the area will be reduced. Please contact us for advice. Loop Condition testing: Resistance of the loop is tested at switch-on. The output will only be connected if the loop resistance is between 0.15O and 1.6O, or 3O on high setting. Additional testing during normal running also checks for high loop resistance, using the normal audio signal. A front panel LED indicates loop error. Frequency Response: 80Hz to 6.5KHz ± 1.5dB at low level, measured as loop current. High frequency high signal level response is a function of loop size, loop current and signal content to ensure that no RFI generation takes place. Internal time constants are very short. Top AC Power Input: 230V nominal, 45-65Hz 115V AC version available. 120VA peak power. Fuse: T 0.63A 250V. Cooling: The unit is designed such that the case acts as a heat radiator. Dimensions : W 215mm, H 44mm, L 210mm Weight: 2.25kg. CE Compliance: The equipment meets all the applicable EMC and safety standards. Options: Rack mounts 1U space using RM-1U tray. Unit is ½ rack width. Wall mounting with the WML-1U bracket set. Loop Cable: Selecting the right size loop cable depends on the size of the loop to be laid. Top

SPECIFICATION

ILD252 INDUCTION LOOP DRIVER

The ILD252 Induction Loop Driver has been designed for a wide range of applications such as medium sized churches, conference & lecture rooms, meeting rooms, small theatres etc. The equipment maintains the traditional Ampetronic high quality vocal and music reproduction, while adding new features to improve performance and operational facilities.

The ILD252 has extensive monitoring and indication facilities. In addition to the LED metering of compression and loop current, the amplifier includes a loop checking feature that tests the loop for high or low resistance at power-up and indicates any fault. Overload and over-temperature conditions are also monitored and indicated on the front panel.

In common with all Ampetronic's induction loop drivers, the ILD252 uses constant-current drive, which is necessary to achieve full compliance with national and international loop system standards. The equipment has safeguards designed in to ensure that all current EMC and safety standards are complied with under all practical operating conditions.

An integral metal loss corrector provides compensation for the frequency dependant loss caused by metal in building construction.
Contact Ampetronic for more information about the effect on loop design and performance of metal in building construction.

The picture below is the rear panel of the ILD252 which shows the connections.

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TECHNICAL SPECIFICATION

Microphone Input: XLR, balanced, low noise. 15V DC Phantom power (selectable). Sensitivity: -70dB at high gain -55dB at low gain. Overload level: -20dBu at high gain -5dBu at low gain. Line Input: 6.4mm Jack socket, fully balanced (unbalanced with mono plug). Sensitivity: -30 dBu. Overload at +20 dBu. High impedance input. Overload protected. Slave I/O: Insert point for connecting Ampetronic Phase Shifter, etc. Can be used as output for recording. Signal level 1V RMS (+2.7 dBu). Preamp Power: ±15V DC max 0.3A for powering Ampetronic Microphone Preamplifiers and external processors. Metal Loss Corrector: Allows correction of system frequency response when losses occur due to metal in the building. Adjustable from 0 to 3 dB per octave, with constant gain 1KHz. This does not compensate for the power loss caused by the metal. Top Compressor / AGC Control: 36 dB control range, with attack / decay time constants optimised for speech. Front panel indication in 6 dB increments. Loop Current: >7 Amp Peak. Absolute peak current >10A. Front panel indication in 2 dB increments with PPM response. Output Voltage: Greater than 19V peak, to enable good frequency response with larger, inductive loops. Patented circuitry prevents clipping, to ensure full EMC compliance. Loop Impedance: Designed for SINGLE-TURN loops, with DC resistance between 0.3O and 1.2O. Area Coverage: The nominal area that can be covered for a rectangular loop is 250m² (2600 ft²). Where the aspect ratio is narrow and long, see handbook. If losses occur due to metal or unusual loop position, then the area will be reduced. Please contact us for advice. Loop Condition Testing: Resistance of the loop is tested at switch-on. The output will only be connected if the loop resistance is between 0.25O and 3O. Additional testing during normal running also checks for high loop resistance, using the normal audio signal. A front panel LED indicates loop error. Frequency Response: 80Hz to 6.5 KHz ± 1.5dB at low level, measured as loop current. High frequency high signal level response is a function of loop size, loop current and signal content to ensure that no RFI generation takes place. Internal time constants are very short. Top AC Power Input: 230 V nominal, 45-65 Hz 115 V AC version available. 120 VA peak power. Fuse: T 0.63A 250V. Ventilation/cooling: Forced ventilation is used, with air intake on the left edge and warm air exhaust from the rear through ventilation grilles. Dimensions : W 430mm, H 44mm, L 220mm Weight: 3.75 kg. CE Compliance: The equipment meets all the applicable EMC and safety standards. Options: Rack mounts 1U space. (Rack brackets supplied). Wall mounting with the WM252 bracket set. Loop Cable: Selecting the right size loop cable depends on the size of the loop to be laid. Top

SPECIFICATION

ILD9 INDUCTION LOOP DRIVER

The Ampetronic ILD9 Induction Loop Driver is designed for a wide range of assistive listening applications where superior vocal and musical reproduction is paramount.

This Loop Driver sets the standard for constant-current drive in loop systems, providing a clean, high quality sound, with distortion levels well below those commonly associated with this type of equipment. The ILD9 is designed to be used with simple, single turn loops, offering ease of installation, combined with very small cable size to reduce visual impact. The single turn loop also allows a wide, flat frequency response to be reliably achieved.

A high performance Compressor (Automatic Gain Control), combined with wideband audio circuitry, maximises both music and speech reproduction for hearing aid users. While retaining the normal speech dynamics to maximise expression, the total dynamic range is reduced to a level more suitable for hearing aid users.

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The system can also be used for many other applications, often in conjunction with separate loop receivers. These applications range from use in visitor guidance, to teaching, translation, overcoming noisy environments, etc.

LED monitoring of compression and loop current is provided on the front panel, with headphone monitoring of the loop current.

The ILD9 includes an innovative method to prevent generation of Radio Frequency Interference (RFI), due to output clipping. This is essential for loop systems to comply with EMC regulations. Patents for this method have been granted in a number of countries.

The equipment is very easy to install and is robust and very reliable, having a long service record in a wide variety of locations.

The pictures below are the rear panel of the ILD9 which shows the connections on the left and right hand sides of the amplifier

TECHNICAL SPECIFICATION

Line Input: 6.4mm Jack socket, fully balanced (unbalanced with mono plug).

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Sensitivity: -40 dBu. Overload at +10 dBu.

Overload protected CMRR >50 dB below 500Hz.

Slave I/O: Insert point for connecting Ampetronic Phase Shifter, etc.
Can be used as output for recording.

Signal level 1V RMS (+2.7 dBu).

Preamp Power: ±15V DC regulated output, up to 0.3A for powering Ampetronic Microphone Preamplifiers and external processors.

Metal Loss Corrector: This control permits correction of the system frequency response when losses occur due to metal in the building. Loss adjustment is adjustable from 0 to 3 dB per octave, using 1KHz as constant gain frequency. This does not compensate for the power loss caused by the metal.

Compressor / AGC Control: 30 dB control range.

Front panel indication in 6 dB increments.

Efficiency: <0.25 dB output change for 25 dB input change. Attack and Decay time constants optimised for speech.

Loop Current: 9.6A Peak signal current. Metering via front panel LED's in 3 dB increments.

Output Voltage: Greater than 36V peak, to enable good frequency response with larger inductive loops.

Patented circuitry prevents clipping, to ensure EMC compliance.

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Loop Impedance: Designed for SINGLE-TURN loops, with DC resistance between 0.4O and 2O.

Area Coverage: The nominal area that can be covered for a rectangular loop is 500m² (5382 ft²). Where the aspect ratio is narrow and long, see handbook. If losses occur due to metal or unusual loop position, then the area will be reduced. Please contact us for advice.

Frequency Response: 80Hz to 6.5 KHz ± 1.5dB at low level, measured as loop current. High frequency high signal level response is a function of loop size, loop current and signal content to ensure that no RFI generation takes place. Internal time constants are very short.

AC Power Input: 230V AC nominal, 45-65 Hz.

115V AC version available.

160 VA Max power.

Fuse: T 1.6A 250V.

Cooling: Vertical airflow is required through a heatsink on the back panel; leave space above and below the unit.

Dimensions : L 432mm, D 220mm, H 88 mm (2U).

Weight: 5.5 kg.

CE Compliance: The equipment meets all the applicable EMC and safety standards.

Options: Rack mounts in 2U space using RM9 brackets.

LOOP CONDITION MONITORING: The ILD9 is now available with a factory fitted Loop Condition Monitoring option. This offers monitoring of both loop integrity and the equipment internal condition, allowing the equipment to be used with voice alarm systems. The status is signalled on a simple isolated contact for easy interface to a wide variety of monitoring systems.

Loop Cable:

Selecting the right size loop cable depends on the size of the loop to be laid.

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