Ampetronic CLD1-AC System manual

CLD1-AC INSTALLATION HANDBOOK
Box Contents
1 x CLD1-AC
1 x AC power cable
1 x A6 Induction loop logo
1 x 'CLD1-AC Installation Handbook'’
1 x Loop coil and fixings (if requested)
1 x Microphone option (if requested)
Handbook Contents
!
!Introduction
!Quick Start
!Installation
!Troubleshooting
!Technical Specification
!Warranty
!Declaration Of Conformity
Safety
This symbol is used to alert the user to important
operating or maintenance instructions.
The Lightning bolt triangle is used to alert the user
to the risk of electric shock.
SAFETY
1. It is important to read these instructions, and to follow them.
2. Keep this instruction manual in an accessible place.
3. Clean only with a dry cloth. Cleaning fluids may effect the equipment.
4. Do not cover or obstruct ventilation of this unit. Install in accordance with
the manufacturer’s instructions.
5. Do not install near any heat sources such as radiators, heating vents, or other
apparatus that produces heat.
6. Refer all servicing to qualified personnel. Servicing is required when the
apparatus has been damaged in any way, such as a power supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to any rain or moisture, does not
operate normally or has been dropped.
7. WARNING - To reduce risk of fire or electric shock, do not expose this
apparatus to rain or moisture. The apparatus shall not be exposed to
dripping or splashing and no objects filled with liquids, such as vases,
shall be placed on the apparatus.
TO PREVENT ELECTRIC SHOCK DO NOT
REMOVE THE COVER. THERE ARE NO
USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
PERSONNEL.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION

INTRODUCTION
The CLD1-AC Compact Loop Driver has been designed as a high quality stand-
alone induction loop driver for ticket counters, banks or other point of sales
systems.
The unit is designed to drive the standard multi-turn loop (if supplied), or a small
area perimeter loop up to an area of 40m². Consult designing induction loops
handbook for more details.
The CLD1-AC features include:
jMicrophone input - for use with unbalanced electret microphones.
kSelectable microphone or unbalanced line level input. (Mic' mode as
above)
lAC power input - standard 2-pin AC power socket..
mLoop output with spring clamp connections.
nIndividual level controls for each signal input, MLC (Metal Loss
Correction) style tone control and loop output.
oSeparate indication of power, input signal and loop current for easy set up.
INPUT 1 INPUT 2
MLC
POWER
LOOP
CURRENT
LOOP
CURRENT
INPUT
SIGNAL
COMPACT
LOOP
DRIVER
CLD1-AC
INPUT 2
SELECT
Line - Mic
LOOP
OUTPUT
POWER INPUT 100 - 240V
50 - 60Hz 12W

QUICK START
1. Fit CLD1-AC to a panel or wall under the counter, away from contact by the
system user. Ensure the cables are positioned such that they are not vulnerable
to damage and are unlikely to be snagged or disconnected from the unit.
2. Fit either the loop coil (provided) or perimeter loop:
·Unfold the loop coil and fit vertically inside the front panel of the counter
using the adhesive fixings provided. The top of the loop coil should ideally
be at a height of 800mm above the floor.
Glass screen
(if fitted)
Place coil
immediately
below counter
Obstruction
Figure 2
Glass screen
(if fitted)
Counter
or
Desk
(customer side)
Counter
or
Desk
(customer side)
Place coil
immediately
below counter
Figure 1
Do not position
coil in this
position
·If a perimeter loop is to be used, the feed wires to the amplifier should
be twisted together. See 'Designing Induction Loops handbook' for details.
3. Connect the loop wires to 'LOOP OUTPUT' terminals. Polarity is not important.
To open the spring clamp terminal - insert a flat bladed screwdriver into the
small “tab” above the hole. Push gently until hole opens.
4. Connect signal to 'INPUTS 1 and 2' as required (see: Connection details).
5. Position 'INPUT 2 SELECT' slide switch for Line or Mic as required.
6. Connect AC power cable to 'POWER INPUT' socket on the unit. Connect to AC
supply.
7. Switch on external AC power: Check green 'POWER' LED illuminates.
8. Apply input signal (e.g. by speaking into mic') and if required increase
corresponding 'INPUT 1 or 2' control until the green 'INPUT SIGNAL' LED
begins to light.
9. Repeat item 9 for the second input (if used). Only apply one audio signal at a
time when setting up the system.
10. If required adjust the 'LOOP CURRENT' control until the yellow 'LOOP
CURRENT' LED lights at peaks in the input signal.
11. Test the performance of the system using a loop receiver or field strength
meter and adjust 'MLC' & 'LOOP CURRENT' to achieve acceptable
performance.
Note: Once the 'LOOP CURRENT' control is set, do not adjust it again.

MOUNTING DETAILS
I/P 1
I/P 2
mic -60
I/P 2
I/P 1
line
-60
-20
mic
line
select
switch
40dB mlc
drive
O/P
BLOCK DIAGRAM
Balanced Input
A+
B-
Screen
Connect screen and -ve
signal lead together
+
Stereo Source
Left
Right
Screen
Keep all wires very short
10k
10k
L
R
Screen
Ideally fit the two 10k, ¼W, summing
resistors within the body of the jack plug
10k
CONNECTION (LINE LEVEL INPUT)
Fixing Hole centres 170.0mm apart

INSTALLATION
Tools
You will require the following:
·Small flat bladed screwdriver
·Screws, fixings and appropriate tools for mounting CLD1-AC on wall etc.
Location
The amplifier should be mounted where:
·It is in close proximity to the loop.
·it is protected from drips or sprays of water.
·it is not vulnerable to mechanical damage.
·the controls can be accessed during set-up.
·the cables will not be inadvertently caught or pulled out from the unit.
·any heat generated during normal operation can escape.
The induction loop itself is a critical to correct system performance, either:
·Unfold the loop coil and fit vertically inside the front panel of the counter
using the adhesive fixings provided. The top of the loop coil should ideally
be at a height of 800mm above the floor. See diagram in Quick start.
2 2
·To cover a larger area, a perimeter loop using 0.5mm to 1.5mm cross-
section wire or equivalent. Return the feed to the amplifier with a
twisted pair. Refer to 'Designing Induction Loops handbook' for details.
Please consult Ampetronic if you need more advice about the loop design.
Connections
LOOP: Connect the loop cable to the 'LOOP OUTPUT' socket.
1. To open the spring clamp terminal - insert a flat bladed screwdriver into the
small “tab” above the hole. Push gently until hole opens.
2 Insert the wire (remove 7mm of insulation from end).
3. Remove the screwdriver - clamping the wire in place.
INPUTS: Both inputs are 3.5mm two pole (mono) jack sockets. They will not
interface directly to any stereo signal source. Connect inputs as shown in the
connection details.
INPUT 1 Unbalanced electret microphone only.
INPUT 2 Microphone as INPUT 1, or Line level input. Note: Set the 'INPUT 2
SELECT' switch to the appropriate position for the type of signal source used.
AC POWER: The 'POWER INPUT' socket accepts 100-240V . Connect to a
AC
convenient AC power socket.

TROUBLESHOOTING
For correct operation, with input signal(s), you should have the following LEDs illuminated:
'POWER' (Green)
'INPUT SIGNAL' (Green) only whilst audio signal is applied to an input
'LOOP CURRENT' (Yellow) only at peaks of audio signal
Power LED not illuminated
No external AC power - Check cable has not been unintentionally disconnected.
Ensure external AC power supply is switched ON.
Internal Fuse Blown - Disconnect from supply and fit a correctly rated
replacement. See SAFETY clause 6.
INPUT SIGNAL LED not illuminated at any time
No inputs connected - Connect an input as described in INSTALLATION.
‘INPUT' control too low - Adjust control as appropriate see: OPERATION.
Input signal level too low - Check that signal level is the correct level for the chosen
input see: TECHNICAL SPECIFICATIONS
'LOOP CURRENT' LED not illuminated (even at peaks of signal)
Loop not connected or open circuit - Check loop continuity using a resistance meter.
‘INPUT SIGNAL' LED not illuminated - See above.
'LOOP CURRENT' control too low - Adjust control as appropriate see: OPERATION.
Low or no field received in the loop area
If 'LOOP CURRENT' LED is illuminated, but no field is received in the loop area, either:
the loop is installed in the wrong place, or
there is a short circuit between the ends of the feed cable.
If 'LOOP CURRENT LED is illuminated, but there is only a very low or dull field strength.
there is significant metal in the desk / counter near the loop consult Ampetronic.
If 'LOOP CURRENT' LED is not illuminated - See above.

CLD1 Power Supply: Loop Output:
Supply range: 100-240V Current: >2.4A or 3.4A @ 1kHz
AC RMS pk
Voltage: >3.2V or 4.5V @ 1kHz
RMS pk
Loop Resistance: 0.3Wto 1.0W
Loop Impedance: 1.3Wmax @ 1.6kHz.
Spring terminal connections accept
Internal DC Fuse: stranded or single core wire.
Acceptable wire gauge:
Audio signal inputs: 2
CSA: 0.5 to 1.5mm
2-pole 3.5mm Jack sockets AWG: 22 to 16.
INPUT 1:
Frequency Response:
Input Impedance: 8.5kW
80Hz - 5.0kHz "1.5dB, at low level
Sensitivity: -60dBu (775uVrms)
measured as loop current with no MLC.
Overload: -13dBu (173mVrms)
Microphone cables must be <= 3m MLC (Metal Loss Correction):
INPUT 2: 0dB to 4dB per octave boost.
Line - Mic mode selectable with switch. Fully anticlockwise - flat response.
'Mic' mode: same as Input 1 Environmental:
'Line' mode: Ambient temperature: -20°C to +50°C
Input Impedance: 820kWIP rating: IP20.
Sensitivity: -20dBu (77.5mVrms)Physical:
Overload: +20dBu (7.75Vrms)Weight: 400g
Note: This input is not isolated.
Compression (AGC): Height: 35mm
40dB dynamic range Depth: 75mm
Controlled by adjusting input level. Standards:
Attack and decay time constants optimized Meets relevant CE, EMC and safety
for speech. standards.
Loop Design: IEC 60118-4 AFILS
Standard loop coil (supplied) or perimeter
loop. See 'Designing Induction Loops Please contact Ampetronic if you need further
Handbook' for details. assistance.
Consult Ampetronic for advice.
Supply currents (with nominal voltage):
Nominal (pink noise): 80mA
Quiescent: 15mA
Maximum: 180mA.
T 1.6A L
Width: 180mm
TECHNICAL SPECIFICATIONS

This product carries a five year parts and labour warranty from date of
shipment from Ampetronic. To qualify for the five year warranty, the product
must be registered at www.ampetronic.co (products/warranty), without which
the warranty will be valid for two years only.
The warranty could be invalidated if the instructions in this handbook are not
followed correctly, or if the unit is misused in any way.
Manufacturer: Ampetronic Ltd.,
Unit 2, Trentside Business Village
Farndon Road
Newark
NG24 4XB
Declares that the product:
Description: Induction Loop Driver
Type name: CLD1-AC
conforms to the following directive(s and Norm(s):
2014 / 35 / EU The Low Voltage Directive (LVD)
and its amending directives
2014 / 30 / EU The Electromagnetic Compatibility Directive (EMC)
and its amending directives
2014 / 53 / EU The Radio Equipment Directive (RED)
and its amending directives
2011 / 65 / EU The RoHS Directive
and its amending directives
Ihereby declare that the equipment named above has been designed to
comply to with the relevant sections of the above specifications. The unit
complies with all essential requirements of the Directives.
Date: June 2019
J.R. Pieters
Managing Director
Ampetronic Ltd.
WARRANTY
DECLARATION OF CONFORMITY
UP16501-9