Contacta IL-EL42-PB User manual

Hearing Loop for
Door Entry Systems
Installation Guide
April 2019
IL-EL42-PB / IL-EL42-PF

Contents
Product Overview
Components
Connections
Installation Instructions - Standard
Installation Instructions - Flush
3
3
4
6
8
Contacta has a policy of continuous product development, therefore small specication changes
may not be reected in this manual. Images, labels, packaging, accessories and product colours
are subject to change without notice.

3
Components
Product Overview
This hearing loop is for use with door entry systems, providing clear
audio to hearing device wearers. Both standard and ush versions of
the unit are available.
1. Back box
2. Front cover [containing PCB for Connections (see page 4)]
3. Front sticker
4. M4 x 16mm socket bolt screw
IL-EL42-PB - Standard
1. Back box
2. Face plate [containing PCB for Connections (see page 4)]
3. M4 x 16mm socket bolt screw
IL-EL42-PF - Flush
1
1
2
2
3
3
4

4
Audio inputs (ohmically isolated)
Operation & Maintenance Manual
Page 1 of 4

Tel: [phone] – www.contacta.co.uk
Operation & Maintenance Manual
Product Name
OEM Integrated Induction Loop Driver
Issue
Product Code
IL-A42 2.0
Project Number
PN0666
28/01/15
1. Introduction
The IL-A42 OEM induction loop module is part of Contacta’s induction loop system range. It has been designed to
be incorporated into third party manufacturers’ equipment. It allows an easy integral solution to machines and
equipment requiring an induction loop. The unit is low profile, discreet and can be fitted in small confined spaces.
There is no setup required. The unit is “plug and play”. It is supplied as a bare board but a suitable housing is
available separately.
2. Safety Precautions
Installation by a qualified engineer is strongly recommended
Ensure that you use a Contacta PS-55-00 power supply or a suitable power supply with a rating of 12-
14volts 2 amps peak. Do not attempt to plug it in to any other device otherwise damage may occur.
Do not attempt to dismantle or modify any parts of the unit. No user serviceable fuses or parts are included.
Warranty may be void if you do so. For repair, consult a Contacta engineer
3. Components
IL-A42 OEM Integrated Induction Loop Driver
4. Installation Instructions
J3
J1
TB1
J2

POWER
IN/OUT
HDR1
ACTIVEOVERDRV
DCIN
LOOP
OUT/IN
IL-A42 OEM Integrated Driver
Figure 1
Audio In or out
Audio out or in
Output to
Induction Loop
Aerial
DC in 12-14v Input
(Designed for Contacta’s
PS-55-00 Power Supply)
For 3way version see figure 3 below
Connections
Operation & Maintenance Manual
Page 1 of 4

Tel: [phone] – www.contacta.co.uk
Operation & Maintenance Manual
Product Name
OEM Integrated Induction Loop Driver
Issue
Product Code
IL-A42 2.0
Project Number
PN0666
28/01/15
1. Introduction
The IL-A42 OEM induction loop module is part of Contacta’s induction loop system range. It has been designed to
be incorporated into third party manufacturers’ equipment. It allows an easy integral solution to machines and
equipment requiring an induction loop. The unit is low profile, discreet and can be fitted in small confined spaces.
There is no setup required. The unit is “plug and play”. It is supplied as a bare board but a suitable housing is
available separately.
2. Safety Precautions
Installation by a qualified engineer is strongly recommended
Ensure that you use a Contacta PS-55-00 power supply or a suitable power supply with a rating of 12-
14volts 2 amps peak. Do not attempt to plug it in to any other device otherwise damage may occur.
Do not attempt to dismantle or modify any parts of the unit. No user serviceable fuses or parts are included.
Warranty may be void if you do so. For repair, consult a Contacta engineer
3. Components
IL-A42 OEM Integrated Induction Loop Driver
4. Installation Instructions
J3
J1
TB1J2

POWER
IN/OUT
HDR1
ACTIVEOVERDRV
DCIN
LOOP
OUT/IN
IL-A42 OEM Integrated Driver
Figure 1
Audio In or out
Audio out or in
Output to
Induction Loop
Aerial
DC in 12-14v Input
(Designed for Contacta’s
PS-55-00 Power Supply)
For 3way version see figure 3 below
Audio in or out
Audio out or in
Output to
hearing loop
14V DC 2.14A via 2.1mm
(from CA-10-02 or host
system)
1 2 3
RIGHTLEFT
Power Supply
• We recommend the unit is powered using a CA-10-02 Power
Supply through port J1. If using a host system, ensure it meets the
following specications:
• Supply voltage: 14V DC
• Current output: 2A minumum
• 2.1mm power connector jack
• J1 is a 2.1mm DC jack with centre pin positive.
Audio Input Connection
• J2 is an audio input connection [100V line].
• J2 and J3 are connected in parallel and are therefore
interchangeable. They are ohmically ground isolated and have
series resistance to prevent interaction due to the paralleling of
stereo channels within the system.
Right (+) Ground (-)Left (+)
GND RIGHTLEFT

5
POWER - Constantly lit red to indicate the device is powered on.
ACTIVE - Illuminates green when a loop is being driven correctly.
OVERDRIVE - Becomes increasingly steady red as an audio signal in-
creases. If it is continuously red, the drive level of the loop is too high
and audio may be distorted.
If the ACTIVE LED is not illuminated and the OVERDRIVE LED is con-
stantly illuminated, the induction loop is disconnected or open-circuit.
Remedial action must be taken.
Audio Input Signal
• Standard recommended input:
Computer sound card signal with typical 1 volt RMS.
• Typical levels for larger speakers can be accepted by removing the
two jumpers on header HDR1.
• 100V ‘Line’ can be accepted in J2.
LEDs

6
Installation Instructions - Standard
1. Identify and mark the mounting surface for the hearing loop’s
back box installation. Ensure any cables can be fed to the chosen
location and into the unit.
2. On the sides of the back box, there are 8 circular blanks (see
below). Select an appropriate blank and remove it to create a hole
through which connections can enter the unit.
Note: If using a conduit, ensure the punched out hole is in an
appropriate location. The conduit should have an outer diameter
no more than 22.5mm and be tted with a watertight seal.
3. Using the outer 4 xing points (see below), screw the back box
into place. Use 4 xing screws (not supplied) suitable for the
installation location’s construction material. If using a conduit, t it
to the back box and feed through cabling.
4. Connect the unit’s PCB – located inside the front cover – to both a
power source and the relevant door entry system (see Connections
on page 4).
Fixing
points
Circular
blanks

7
5. Place the front cover onto the back box. If using a conduit, align it
with the unit’s cutout. If not using a conduit, position the cutout at
the bottom of the unit.
6. Carefully apply the front sticker to the front cover, ensuring the
horizontal holes are aligned.
7. Screw the front cover to the back box using the provided socket
bolt screws.
8. Use a sealant to create a weather-tight bond between the front
cover and the mounting surface.
9. Installation is now complete. The Hearing Loop for Door Entry
systems is plug-and-play, meaning no further setup is required.

8
4. Using the outer 4 xing points (see below), screw the back box
into place. Use 4 xing screws (not supplied) suitable for the
installation location’s construction material. If using a conduit, t it
to the back box and feed through cabling.
1. Identify and mark the surface for the hearing loop’s back box
installation. Ensure any cables can be fed to the chosen location
and into the unit.
2. Create a 115mm x 115mm hole with 43mm depth in the required
installation location. This will contain the unit’s back box.
3. On the sides of the back box, there are 8 circular blanks (see
below). Select an appropriate blank and remove it to create a hole
through which connections can enter the unit.
Installation Instructions - Flush
Circular
blanks
5. Connect the unit’s PCB – located on the rear of the face plate –
to both a power source and the relevant door entry system (see
Connections on page 4).
Fixing
points

9
6. Place the face plate onto the back box.
7. Screw the face plate to the back box using the provided socket
bolt screws (see below).
8. Use a sealant to create a weather-tight bond between the front
cover and the mounting surface.
9. Installation is now complete. The Flush Hearing Loop for Door
Entry Systems is plug-and-play, meaning no further setup is
required.

10
Symptom Possible Fault Action Required
POWER LED not illuminated Power supply disconnected
or failed Investigate power supply
POWER LED illuminated
Other LEDs not illuminated
No audio input Investigate audio feed
POWER LED illuminated
ACTIVE LED ickering
or steady
OVERDRIVE LED o or
occasionally ickering
Correct operation, although
audio input is potentially low
Increase audio level (if
possible)
POWER LED illuminated
ACTIVE LED ickering or
steady
OVERDRIVE LED ickering
regularly
Good operation No action
POWER LED illuminated
ACTIVE LED o
OVERDRIVE LED illuminated
Induction loop disconnected,
open circuit, or incorrect
specication
Investigate loop and its
connections
Interference (buzzing /
whistling / hissing) is heard
through hearing loop
Unscreened or poortly
earthed third party equipment
is being used in HOST or in
close proximity
Incorrect power supply
Switch o any third party
equipment to identify the
source of interference
CA-10-02 Power Supply is
recommended to aid in
screening interference
Troubleshooting

11

Local dealer:
UK & ROW
[phone]
[email protected].uk
US & Canada
[phone]
[email protected]
www.contacta.co.uk