PDA Range PDA200E User manual

PDA200E Induction Loop System
Installation Guide
Key Feature
The PDA200E is a cost-effective induction loop amplifier that is designed to drive a perimeter
loop of up to 200 square metres. It provides the following key features:
• Fully compliant as a perimeter loop system as described in BS 7594, clause 10 A3 and BS EN
60118-4 when correctly installed
• Up to 200 square metres (metal free) coverage - ideal for most ‘free space’ applications
• Two balanced / unbalanced line level inputs
• One microphone input with phantom power for electret microphones (12 V)
• Full compatibility with the Outreach plate audio input extension system
• Metal compensation control to improve intelligibility in rooms with high metal content
• Fully automatic compressor-limiter which maintains the loop signal for improved intelligibility
• Each input has a separate internal tamper-resistant control that can be manually adjusted
• Compression, output (Peak Current 3, 2, 1) and power on (Power) front panel indicators
• Short circuit protection
• Internal temperature safety cut-out to stop over heating
• Wall-mounted metal enclosure for a permanent robust installation
• Complete with installation kit, instructions and ‘loop fitted’ sticker
• Contractor kits available - suitable for use in meeting rooms, TV lounges, places of worship, etc.
Approved Document No. DCP0002129 Rev 7 1 of 12
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLING AND / OR MAINTAINING THIS EQUIPMENT.
Hint!
Additional information about loop design can be found in the PDA uide to
Audio-Frequency Induction Loop Systems (AFILS), Document Number DLM0503700.
Approved Document No. DCP0002129 Rev 7
12 of 12
PDA200E 200m2Induction Loop Amplifier & Kits
PDA200E 200m2wall-mounting induction loop amplifier
AKM1 PDA200E 200m2Meeting/seminar room loop kit
c/w PDA200E amplifier, APM omni-directional mic plate/cable
AKL1 PDA200E 200m2Lecture room loop kit
c/w PDA200E amplifier, AMT tie/desk mic, AML lectern mic, 2 x APJ plate/cable
AKT1 PDA200E 200m2TV / music lounge loop kit
c/w PDA200E amplifier, AMH handheld mic, APS scart lead, APJ plate/cable, APL plate/cable
AKR1 PDA200E 200m2Waiting room loop kit c/w PDA200E amplifier, APL plate/cable
AKU1 PDA200E 200m2Retail unit loop kit
c/w PDA200E amplifier, AML lectern mic, APJ plate/cable
AKW1 PDA200E 200m2Place of worship loop kit 1
c/w PDA200E amplifier, AML lectern mic, APJ plate/cable, APL plate/cable
AKW2/L PDA200E 200m2Place of worship loop kit 2 (lavalier mic. version)
c/w PDA200E amplifier, AMR/LA lavalier radio mic, APQM plate/cable, 2 x APXM plate/cable
AKW2/H PDA200E 200m2Place of worship loop kit 2 (handheld mic. version)
c/w PDA200E amplifier, AMR/HA handheld radio mic, APQM plate/cable, 2 x APXM plate/cable
AKH1/L PDA200E 200m2Health and fitness club loop kit (lavalier mic. version)
c/w PDA200E amplifier, AMR/LA lavalier radio mic, APQM plate/cable, APL plate/cable
AKH1/H PDA200E 200m2Health and fitness club loop kit (handheld mic. version)
c/w PDA200E amplifier, AMR/HA handheld radio mic, APQM plate/cable, APL plate/cable
PDA Pro-Range Amplifiers and Mounting Kits
PDA200/2 200m2free-standing professional induction loop amplifier
PDA500/2 500m2free-standing professional induction loop amplifier
PDA1000/2 900m2free-standing professional induction loop amplifier
PDA/WM Wall mounting kit for PDA200/2, 500/2 or 1000/2 amplifier
PDA/RM 19” Rack mounting kit for PDA200/2, 500/2 or 1000/2 amplifier
Outreach Plates
APM Omni-directional plated microphone, for wall/ceiling/desk mounting
APL Dual phono line level outreach plate
APJ 3.5mm jack mic. level outreach plate
APQM 6.35mm (¼”) jack mic. level outreach plate
APQL 6.35mm (¼”) jack line level outreach plate
APXM XLR 3 pin mic. level outreach plate
APXL XLR 3 pin line level outreach plate
APXO XLR 3 pin balanced line output outreach plate
API AFILS active indicator light
BELDEN/10 10m Belden 8723 four core screened cable for use with outreach plates
BELDEN/25 25m Belden 8723 four core screened cable for use with outreach plates
Induction Loop Testing Equipment
FPROK Fosmeter Pro Induction Loop Test Kit
(includes Fosmeter Pro loop tester, Audio signal generator & headphones.)
Requires either AL3 lead for PDA102 / MLK1K / PDA200E or AL14 lead for Pro-Range amplifiers.
AL1 3.5mm jack to 3.5mm jack lead
AL2 3.5mm jack to double phono lead
AL3 3.5mm jack to bare ended lead
AL4 6.35mm (¼”) jack to XLRM lead
AL12 3.5mm jack to 6.35mm (¼”) jack socket adapter
Induction Loop Ancillaries
APT Loop connector plate (for the termination of induction loop cable)
LEST 100V line (i.e. PA system output) to 0db (775mV line level) convertor
APPS Overspill reduction phase shifter
TEAR10 Pack of 10 self-adhesive ‘induction loop in use’ stickers
PDA Range Selected Part Li ting

PDA200E Example Schematic
This schematic shows an example system which utilises a desk mounted microphone (AMT) directly
wired into the PDA200E and two Outreach plate microphones (APM).
Approved Document No. DCP0002129 Rev 7
2 of 12
Mains wiring
Neutral (N) 230 Vac (L)
Earth
N
L
FUSE
Mains connection
and fuse information
is detailed on page 4
P2
P1
P3
RV1
RV3
RV5
RV2
RV4
VR1
DONOT ADJUST
LINE 1 LINE 2
MIC
MET COMP
DRIVE
Loop cable (1 mm2 single core)
3. Set DRIVE so that the ‘Peak Current 3’ indicator
on the front panel flickers occasionally when test
signal is applied (see Page 9). Caution: Setting the
loop current too high causes intermittent operation
due to the unit’s internal temp. safety cut-out.
1. Set LINE / MIC Levels so that the
‘Compression’ indicator on the front
panel just comes on when the test
signal is applied (see Page 9), then
move back approx.1/8 of a turn.
2 core screened audio
cable, e.g. Belden 8723
APM
Outreach Plate
AU Bus in+
AU Bus in-
V+
GND
AU Bus in+
AU Bus in-
V+
GND
AU-
AU+
AU-
AU+
V+ L2- L2+ GND L1- L1+GND
Screened
unbalanced
mic cable
AMT desk mounted
electret microphone
M- M+GND
MIC- MIC+
SPARE
SPARE
APM
Outreach Plate
2. Set MET COMP to increase the high
frequency signal to compensate for
losses caused by structural metalwork.
WHITE
WHITE
- LOOP +
(Additional L1- and L1+
wiring not shown)
Approved Document No. DCP0002129 Rev 7 11 of 12
APM
ceiling
microphone
APXL
XLR
Plate
SCARTinput fromTV
Deskmicrophone
microphone
2core
APL Line
Level
Plate
APJ
Jack
Plate
2core
MainsTwin&Earth
2core screenedaudio
cable,e.g.Belden8723
Loop1mm2singlecore cable
Mains(230Vac)
Mains
Direct
microphone
input
LoopLoop
2core 2 core 2core
Amp
Outreach plates can be daisy-chained to one balanced line level input, as shown below:
Power
Mains Voltage: 230 Vac, 50-60 Hz
Power Consumption: < 80 VA
Line Level Input (x2)
Impedance: 1k + or - input to ground
Sensitivity: 200 mV - 2.5 V RMS balanced or unbalanced
Input Voltage: 2.5 V max. or Outreach plates
Performance
Bandwidth: 100 Hz - 5 kHz @ 0 dB
Distortion: < 0.33% THD & @ 1 kHz 0 dBU
Microphone Input
Impedance: 1k + or - input to ground
Sensitivity: 1 - 8 mV balanced
Phantom Voltage: 12 Vdc
Metal Compensation
Control: 3 dB / octave band (Boost)
Output Drive Current
Maximum Peak: > 6.2 A; continuous 4.2 A
Loop Cable
Max. Area of Coverage: 200 m2 (1 mm2 cable) - metal free
Loop Impedance: 0.5 to 1 ohm @ 1 kHz. Will drive higher impedance
loops with reduced area of coverage.
Front Panel Indicators
Power: reen LED
Compression: Red LED
Peak Current (3, 2, 1): (Red / Yellow / reen) Scale
Physical
Weight: 2.9 kg
Dimensions (L x H x D): 273 mm x 200 mm x 77 mm
Environmental
Ingress Protection: IP20
PDA200E Technical Specification
Typical Outreach Plate Layout

Approved Document No. DCP0002129 Rev 7 3 of 12
Important Information
•This equipment is a piece of Class 1 equipment and MUST BE EARTHED.
•This installation guide MUST NOT be left accessible to the user.
•ALWAYS isolate the amplifier’s Mains supply before making connections to its PCB.
Equipment guarantee
This equipment is not guaranteed unless the system is installed and commissioned in
accordance with the relevant regional or national standards by an approved and competent
person or organisation.
General precautions
DO NOT test wiring using an insulation tester (Megger) with any equipment connected as the
500 volt test voltage will destroy these devices totally and invalidate the warranty.
An audio-frequency induction loop system (AFILS) allows hearing impaired
people, who are wearing a hearing aid fitted with a tele-coil, to hear more
clearly. AFILS also minimise distracting and annoying background noise.
Most hearing aids have a ‘T’ or ‘MT’ switch which allows them to pick up the
electromagnetic field generated by an induction loop system. The hearing aid
converts this signal into a sound suited to its user’s specific hearing requirements.
Any hearing impaired person positioned within or near the loop can hear the loop signal by
switching their hearing aid to the correct position. This allows them to participate more effectively
in general conversation, order goods or services, listen to public announcements, etc.
An induction loop system therefore comprises four main elements:
The audio source – typically a microphone, television / radio, or other line level audio source.
The induction loop amplifier – in this case the PDA200E.
The loop – typically a single turn of wire usually run around the perimeter of the room.
The receiver(s) – any hearing aid with a ‘T’ or ‘MT’ switch.
PDA200E Kit
The PDA200E is supplied separately, or as part of a kit with Outreach plates which increase the
number of audio inputs to the PDA200E. All kits (listed on page 12) include a PDA200E amplifier
and 6 metres of Belden 8723 cable per Outreach plate. Contact your supplier for ordering kits.
What i an audio-frequency induction loop y tem?
These instructions are general and cannot be considered to cover every aspect of a loop amplifier installation.
E&OE. No responsibility can be accepted by the manufacturer or distributors of these units for any misinterpretation of this
instruction, or for the compliance of the system as a whole. The manufacturer’s policy is one of continuous improvement and
we reserve the right to make changes to product specifications at our discretion and without prior notice.
Outreach Plate Variant
The Outreach Plate audio input extension system comprises of wall, ceiling and desk mounted
single gang plates designed to increase the audio input capability of an AFILS. They mix signals
from various input sources into one balanced line level input which can be fed into the PDA200E’s
line input.
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APM Omni-Directiona P ated Microphone
Self-contained omni-directional
electret microphone complete
with onboard mic. to line level
converter. Typical coverage up to
25 m2(ambient) or 2.5 m2 (direct
speech) when located at ceiling
height 2.5 to 3 m.
APL Dua Phono Line Leve P ate
Accepts stereo phono line-level
signals (typically from a stereo
source, e.g. a TV, CD or DVD).
Includes an on-board stereo line to
mono converter. (An APS SCART to
dual phono lead is also available.)
APJ 3.5 mm Jack Microphone P ate
Accepts unbalanced electret
microphones with 3.5 mm mono
jack plugs. Includes an onboard
microphone to line level
converter, high gain pre-amplifier
and 12 V phantom power.
APQM 6.35 mm (1/4”) Jack Microphone P ate
Accepts balanced or unbalanced
electret microphones with 6.35
mm (1/4”) jack plugs. Includes an
on-board microphone to line
level converter, high gain pre-
amplifier and 12 V phantom
power.
APXM XLR 3 Pin Microphone P ate
Accepts balanced or unbalanced
microphones with standard 3
pin male XLR connectors.
Includes on-board mic. to line
level converter, high gain pre-
amplifier and 12 V phantom
power.
APXL XLR 3 Pin Line Leve P ate
Accepts standard 3 pin male XLR
feeds from audio equipment
such as stage, or church mixing
desks, etc.
APQL 6.35 mm (1/4”) Jack Line Leve P ate
Accepts 6.35mm (1/4”) jack feeds
from audio equipment such as
stage, or church mixing desks,
etc.
Outreach Plate Input ariants
APXO XLR 3 Pin Ba anced Line Output P ate
Provides an adjustable balanced
line output (+12 dB max.) on a
standard 3 pin male XLR
connector. Typically used to
connect an Outreach chain to
third-party audio equipment
such as conventional amplifiers.
API ‘AFILS Active’ P ate
Includes two ultra-bright LEDs
in a translucent diffuser
overprinted with the AFILS ‘ear’
symbol. The LEDs illuminate
when the Outreach network is
powered to indicate that an
AFILS system is installed.
Outreach Plate Output ariants
AMT - Tie Clip / Desk microphone AMP - Phantom powered condenser microphone
AMH - Handheld microphone AMR - Handheld or Lavaliere radio microphone
AML - Lectern microphone PRO45 - Hanging ambient microphone
AMD - Desktop microphone 121 - Desk stand for AMH/AMP microphones
Microphones (available separately)

Approved Document No. DCP0002129 Rev 7 9 of 12
Second Fix
Internal controls
Five internal pot controls (shown in diagram below) are located on the PDA200E’s PCB, which is
mounted internally on the unit’s lid. The fully anti-clockwise position is the control’s minimum
setting (note that factory default setting is mid-position).
The LINE 1 and LINE 2 Level controls are used to set the signal levels of the line level inputs into
the amplifier. Apply an audio source, such as a CD / test signal and adjust so that the ‘Compression’
red indicator (on the front panel) just comes on, then move back approximately 1/8 of a turn.
If this indicator is either on constantly, or not on at all (with the signal present), then the amplifier
may need further adjustment. If this level is set too high then the life span of the amplifier may
be significantly shortened.
The MIC control is used to set the signal level of
the microphone input. Adjust this control as per
the LINE 1 and LINE 2 Level controls detailed
above.
The MET COMP (metal compensation) control is
used to compensate for the loss of high
frequencies that occurs when significant amounts
of metal are present. Turning the control clockwise
boosts the range by +3 dB per octave.
The DRI E control is used to increase / decrease the
output current level supplied by the amplifier into
the induction loop and should be set up after the
‘Compression’ has been set. Drive control should
be set so that the ‘Peak Current 3’ red indicator (on
the front panel) is either not on, or is just
occasionally flashing. Adjusting this control to the
point where this indicator is permanently lit may
damage the amplifier.
P2
P1
P3
RV1
RV3
RV5
RV2
RV4
VR1
DO NOT ADJUST
LINE 1
LINE 2
MIC
MET COMP
DRIVE
LOOP + WTE LOOP - WTE
Test the system
Apply an input test signal (microphone, line or Outreach) to the amplifier and check that the
system works satisfactorily. Ideally, an induction loop listening device, or a national health hearing
aid, should be used.
We recommend you check the loop system using an Induction Loop Test Kit (Part No. FPROK) which
includes both a 400 mA/m Fosmeter Pro loop tester and an audio signal generator. This kit assists
with the set up, testing and calibration of an AFILS for compliance with BS EN 60118-4.
Hint!
Additional information about testing AFILS can be found in the
Fosmeter Pro (FPRO) Instructions, Document Number DCM0004006.
Approved Document No. DCP0002129 Rev 7
4 of 12
Neutral (N) 230 Vac (L)
Earth
L
FUSE
Fuse 1A HRC
The metal lid may be removed for ease of mounting.
Undo the two screws at the top of the front panel
using the 3 mm Allen key (supplied).
The PDA200E can
be surface mounted
using the three
mounting holes in
the unit’s base.
Mounting holes are
designed for No.8
roundhead or
countersunk wood
screws. Any dust or
swarf must be kept
out of the enclosure
and great care must
be taken not to
damage the wiring
or components.
If removing the lid,
remove the four wiring
loom connectors.
P1
P3
RV1
RV3
RV5
RV2
RV4
VR1
DONOT A DJUST
LINE 1
LINE 2
MIC
MET COMP
DRIVE
P2
Fir t Fix
Before any of the following is carried out ensure that the Mains supply is isolated.
Equipment Location
All equipment must be sited indoors and MUST NOT be subjected to conditions likely to affect its
performance, such as damp, salt air, water, extreme temperatures, physical abuse, etc.
Wall mounted equipment should be sited at an easily accessible height.
Remove knockouts
Decide how the wiring will be brought into the amplifier and
remove the required knockouts for cable entry. A basic
PDA200E system would require three knockouts; one each for
Mains, loop cable and microphone / Outreach plates.
If a knockout is removed fill the hole with a good quality
cable gland. Unused knockouts must be securely blanked off.
Observe proper segregation of wiring
Mains, loop and low power wiring must not come into
contact, i.e. do not feed wiring through the same gland or
allow wires of one type of connection to cross those of
another.
Connect Mains to the PDA200E
The 230 Vac cable MUST enter
the enclosure via one of the
knock-outs at the top right
hand corner of the enclosure.
This equipment requires fixed
wiring, using three core cable
(no less than 0.75 mm2and no
more than 2.5 mm2) fed from a
3 amp fuse spur fitted with an
isolating switch, located no
more than 3 metres from the
amplifier.
Terminate the Mains input
lead using the fixed Mains
connector on the base of the
unit (shown above).
This equipment is designed for
permanent Mains connection
and must not be connected
using a plug and socket.
Mains Wiring

Overspill and more complex installations
The magnetic field is not confined to the area within the loop and the signal may be heard in
adjacent areas such as a corridors and up to three times the width of the loop away. If this is a
problem there are special designs of loop that can reduce the overspill field.
The AFILS British Standard (BS 7594) suggests several technically complex solutions that are
reasonably effective but are not commonly employed due to high cost.
A low-cost but effective method to reduce overspill is to make a smaller loop, typically in the
centre of a room. The smallest practicable loop for floor or ceiling mounting (up to 3 metres
high) is 3 metres square. This will provide a reasonable field at head height above the loop and
up to four metres away in all directions.
This loop may be installed above a suspended ceiling or in plastic conduit in the floor. Flat cable
may be used under carpet.
In larger installations, and where overspill and/or an abundance of steel is present, a phase shifted
loop array or 'super loop' may be required / specified. This is achieved by using an APPS phase
shifter unit and laying two identical but offset loop patterns.
The APPS Overspill reduction phase shifter is part of the Outreach range of distributed mixer
components. It is designed to take the signal from one or more Outreach plates and produce
two signals that are 90° out of phase with each other. These signals are then fed into two
(identical) induction loop amplifiers which are in turn connected to two loop patterns which are
laid out in a special overlapping design. The resultant magnetic field is evenly spread within the
loop but the strength falls off more quickly than outside a simple loop.
Please see diagram below (sizes shown are examples only as each system must be uniquely
designed). Phase shifted loop designing is a free service available on request.
Input
2m 2m
1.6m
3.2m
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Balanced Mic
P2
P1
Connect to electret mic
–+
GND
GND M- M+
Unbalanced Mic
P2
P1
Connect to electret mic
+
GND
GND M- M+
Connecting Input
Microphones (1 input available)
A Mic level input can be directly wired to the PDA200E Mic input as shown below.
Balanced microphones should be wired to ND, M– and M+ (M+ carries the 12 V phantom power).
Unbalanced microphones (see Microphones, page 10), i.e. AMT (after removal of 3.5 mm jack plug),
AML and AMD should be wired as signal+ to M+, Screen to ND and M– linked to ND.
Line Level (2 inputs available)
Unbalanced line level inputs should be wired as shown below with signal+ to L+, Screen to ND
and L- linked to ND.
Balanced line level inputs should be wired using Outreach plates (detailed in next section).
Unbalanced Line
P2
P1
Line Level IN
+
GND
V+ L2- L2+ GND L1- L1+GND
(Additional L2- and L2+
wiring not shown)

Approved Document No. DCP0002129 Rev 7 7 of 12
Installing the Loop Cable
The loop cable should be laid in a single turn and wired into the PDA200E’s termination block
labelled LOOP- and LOOP+, as shown in the diagram on page 2 of this guide.
In the vast majority of cases loop cables are normally mounted horizontally around the perimeter
of the room to be covered, either at ceiling or floor height. They may also be installed under
carpet by using flat loop cable.
Do not install the loop cable closer than 1.2 metres to a hearing aid position.
The typical PDA200E installation (shown below) mounts the loop cable above the suspended
ceiling and utilises two wall mounted microphones (APM).
2 core screened
audio cable
e.g. Belden 8723
1 mm2single core
loop cable
PDA200E
Amplifier
APM APM
Ceiling
Ceiling
Mains
Hint!
Additional information about loop design can be found in the PDA uide to Audio-
Frequency Induction Loop Systems (AFILS), Document Number DLM0503700 and also at
www.pdaloops.net.
Outreach Plate Wiring
Outreach plates increase the number of audio inputs to the PDA200E. They can be daisy-chained
together and then connected as a single line level input as shown below.
1. Run the 2 core screened audio cable (supplied in kits) from the PDA200E to the first Outreach
plate and secure with an appropriate gland.
2. Connect the PDA200E to the Outreach plates in accordance with:
V+ on PDA200E to V+ on Outreach plate
ND on PDA200E to ND on Outreach plate
L+ on PDA200E to AU+ on Outreach plate
L- on PDA200E to AU- on Outreach plate
3. Connect the 2nd Outreach plate (if required) to the 1st Outreach plate as shown below.
4. Fit the Outreach plate to the outlet box using the screws provided.
1st Outreach Plate
2nd Outreach Plate
AU Bus in+
AU Bus in-
V+
GND
AU Bus in+
AU Bus in-
V+
GND
AU-
AU+
AU-
AU+
P2
P1
L1- L1+GNDV+ L2- L2+ GND
RED
WHITE
GREEN
BLACK
(Additional L1- and L1+
wiring not shown)
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Hint!
Additional information about Outreach plates can be found in the
Outreach Plate Installation uide, Document Number DCP0002212.