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INTRODUCTION
The ILD1000G Induction loop driver has been designed as a high quality
amplifier for use with conference rooms, stadia, theatres, sports halls,
confidential rooms, lecture halls and cinemas. Depending on a number of
factors regarding the installation of the loop and the set-up of the amplifier
the ILD1000G can provide compliance with IEC60118-4 for areas >1300m
2
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Ease of installation and use have been major factors in the design,
combined with optimised performance, and the freedom from R.F.I.
generation.
The ILD1000G has three inputs. A balanced line (INPUT 3), a balanced
microphone (INPUT 1) and one (INPUT 2) which can be configured to either.
For more complex installations, you may need ancillary equipment such as
microphone pre-amplifier(s), adaptor(s) for use with 100V line, or signal
processing units. See
Accessories
or contact Ampetronic for advice.
QUICK START
For those who have a good appreciation of loop systems, the following is a
very quick guide to setting up the amplifier: All you need is an ac power
source, a signal source and a loop. See ‘Designing Induction Loops’
handbook (supplied) or contact Ampetronic for advice.
Installation
1.
Turn all controls fully anti-clockwise.
2.
Connect loop cable of appropriate length / gauge.
3.
Connect signal input(s).
4.
Connect power. See points 6 and 7 in
SAFETY
section.
5.
If rackmounted remove all rubber feet from units. DO NOT re-fit the
feet fixing screws as this may cause damage and invalidate the
warranty
Operation
6.
Switch ON – check green POWER LED flashes during self test and
illuminates continuously when checks are complete.
7.
Apply input signal and increase the input control until two green
COMPRESSION LEDs are illuminated on the peaks of the signal.
8.
Adjust the CURRENT control until the CURRENT LED illuminate to
achieve the desired peak current.
9.
Repeat step 6 for any other inputs used.
10.
Listen to the magnetic field produced inside the loop area using a
receiving device (e.g. Ampetronic ILR3), or examine the performance
in more detail with a field strength meter.
11.
Adjust MLC control to achieve a flat frequency response.
