PDA101
MINI-INDUCTION LOOP AMPLIFIER
Ideal for ticket counters, desktops,
TV lounges, interview rooms, etc
Provides max. square room coverage of
49m2 (7m x 7m) or max. rectangular
room coverage of 100m2 (5m x 20m)
Two microphone or line level inputs
Optional phantom power
Adjustable level controls
Input peak, output current, signal
The PDA101 mini-audio frequency induction loop amplifier is ideal for
any application requiring restricted or small area coverage. It includes
two mixed microphone or line level inputs for the connection of desktop
microphones, television SCART leads, CD players, etc., and comes in a
variety of kit formats to aid specification and installation.
present and power on LEDs
Automatic compressor/limiter
‘Soft Start’ facility
Adjustable drive current
Integral PSU
Full 2Ω drive current capability for
The amplifier’s inputs can be easily adjusted for optimum performance
using the two level controls provided on its front. An adjustable drive
control is also provided, allowing the amplifier’s output stage to be
set-up to suit the exact requirements of any room.
increased coverage at higher frequencies
Free-standing or wall-mountable
Compatible with SigNET’s unique
‘outreach plate’ input extension system
Available in a variety of cost-effective
kit formats
Fully compliant with EN60118-4
(formerly BS6083) and BS7594:1993
The PDA101’s state-of-the-art audio processor features an automatic
compressor/limiter which compensates for poor microphone techniques
and helps suppress loud noises, hisses and clicks from the output stage.
A ‘soft start’ facility prevents excessive start-up noise entering the loop
when the unit is switched on and the amplifier’s true current drive
amplification circuitry guarantees excellent and consistent sound quality
for the hearing impaired.
The amplifier is designed to be free-standing or wall-mounted using the
keyholes provided and installation is further aided by a selection of
set-up indicators including an input peak, output current, signal present
and power on LED.
The PDA101 mini-induction loop amplifier is available in the following cost-effective kit formats:-
PDA101C COUNTER LOOP KIT
PDA101L SMALL ROOM KIT
PDA101S TV/MUSIC ROOM KIT
Includes everything required for a
high quality stand-alone counter
loop system for a post office, bank,
ticket office, reception desk or civic
centre. Includes an AMT tie/desk
microphone, a TX121 counter loop
cable and a loop fitted sticker.
The perfect small room induction
loop system for meeting rooms,
council chambers, waiting rooms and
reception areas. Includes an AMT
tie/desk microphone, 30m of loop
cable and a loop fitted sticker.
Designed for use in areas such as
nursing home TV lounges. Includes
everything you need to create a costeffective loop system that allows the
hard of hearing to enjoy TV/radio
broadcasts clearly. Includes a SCART
lead, 30m of loop cable and a loop
fitted sticker.
+44 (0) 191 417 4551
+44 (0) 191 417 0634
info@signet-ac.com
www.signet-ac.com
A typical
PDA101S
Installation
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A typical
PDA101L
Installation
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POWER REQUIREMENTS
Mains voltage
Power consumption
Fuses
230V ac
<20VA
Plug 3A; Internal mains input fuse 250 mA 20 mm (HRC)
A two metre mains lead (IEC 320 type) and 3A fused plug are provided as standard in all kit variants.
INPUTS
Two unbalanced inputs, each either mic or line level, with DIP switch selectable +5V phantom power
MICROPHONE
Input connector
Input Impedance
Sensitivity
Phantom
3.5mm mono jack
600Ω
2-5mV (-46db to -50db)
+5V (selectable)
LINE
Input connector
Input impedance
Sensitivity
3.5mm mono jack
>10kΩ
0dbv (300mV rms to 1.5V rms)
Should additional inputs be required, the PDA101 is compatible with SigNET’s ‘outreach plate’ input extension system.
This allows up to 10 extra mic or line level inputs to be daisy-chained to the PDA101. See our separate datasheet for details.
PDA101 Technical Specification
OUTPUT
Type
Loop connector
Cable
Loop coverage (square room)
Loop coverage (rectangular room)
Loop drive current
Loop impedance
Current mode
Releasable two pole friction connector
0.5mm2 CSA cable (supplied with PDA101L & S) or Tx121 counter loop cable (supplied with PDA101C)
50m2 max. (e.g. 7m x 7m)
Up to 100m2 when shortest side of loop is no greater than 5m (e.g. 5m x 20m)
3.12A peak; 1.4A average
0.2 to 2Ω @ 1kHz
PERFORMANCE
Bandwidth
Input stage dynamic range
Distortion
40Hz to 8kHz
33dB
<0.5% THD
The PDA101 includes an amplitude compression stage that limits overload and has a dynamically variable ratio from 1:1 to10:1
INDICATORS & CONTROLS
LED indicators
Input peak (limit); output current (clip); signal present (sig); power on (on)
User controls
Two Input level controls: signal adjustable between 0dB to -35dB relative to max.
input stage gain for both line and microphone signal. A DIP switch is provided for
setting up each input for mic or line and phantom on or off operation. For applications
where both inputs are used, the two level controls double up as a simple mixer.
One output drive current control giving a loop current adjustable fron 0dB to -35dB
relative to maximum current
All user controls are screwdriver adjustable and recessed to avoid tampering.
DIMENSIONS & FINISH
Width x Height x Depth
Weight
Finish
110 mm x 52 mm x 133 mm
785g (unpacked)
Black powder coated steel chassis, black anodised cover.
Approved Doc. No. DCS0001684 Rev2. SigNET operates a policy of continuous improvement & reserves the right to alter product specifications at its discretion & without prior notice. E&OE.
A typical
PDA101C
Installation