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INSTALLATION

Location: 

The unit may be free standing or 19” rack mountable using the pair of rack 

ears supplied. The screws which fix the rack ears to the unit are located at 

the front of each side panel, as shown (   ) in the 

Overview. 

A PH2 

screwdriver will be required to remove and replace the 2 pairs of screws 

when fixing the rack ears in place. Remove four rubber feet.

The location must provide satisfactory ventilation for the equipment. 
An internal fan provides forced ventilation using the air vents at the 

left side (intake) and rear panel (exhaust) of the unit. Both of these vents 

must be unobstructed for satisfactory cooling. If the unit is installed in an 

enclosed environment, sufficient air flow into the enclosure must be 

provided through vents, fans or other means, such that the units exhaust 

air is not recycled to the inlet - causing it to OVERHEAT.

Slave

I/O

Output

Metal

Loss

Correction

Compression LEDs

Current LEDs

Overheat

LED

Microphone

Input

Microphone

Gain

Line

Gain

+15V

Loop

Current

Line

Input

Loop

Output

Loop

Monitor

Gain

Boost

Compressor

Phantom

Power

Switch

Overload

LED

Loop

Error

LED

Block Diagram

Connections

Connection of 

male XLR for microphone

input

balanced

+ (Signal hot)

- (Signal cold)

1

2

3

Screen

TIP

SOURCE

TO  ILD500

LINE INPUT

SLEEVE

RING

Connection of 3-pole Plug

with balanced signals.

Use Twin-screened cable.

+ (Signal hot)

- (Signal cold)

LINE

INPUT

MIC

INPUT

SLAVE

I/O

LOOP 

CONNECTOR

+ (Signal)

TIP

SOURCE

TO  ILD500

SLEEVE

RING

LINE INPUT

Connection of 3-pole plug.

Use Twin-screened cable.

Must be 3m or less.

Unbalanced 

Balanced 

TIP

RECORDING DEVICE

TO  ILD500

SLAVE I/O

SLEEVE

RING

Connection of 3-pole Plug

to use Slave I/O socket

for recording output.

+ (Signal)

+15V 

Power

Supply

Power

LED

Earth

Link

230V

or

120V

AC Power

-15V 

0V 

Power

Switch

15V

150mA

 DC

Output

Socket

0V

+15V

-15V

Use cable supplied.

Must be 3m or less.

8.00mm

20.00mm

use either NL4 connections 1or 2, or both as required

1+
2+

LOOP +

1-

2-

LOOP -

Internal unit connections

Summary of Contents for ILD500

Page 1: ...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 9 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 plac...

Page 2: ...9 Repeat step 6 for the other input if 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 METAL LOSS CORRECTION to achieve a flat frequency response QUICK START INTRODUCTION The ILD500 Induction Loop Driver has been designed as a high quality amplifier for us...

Page 3: ... the loop cable METAL LOSS CORRECTION Screwdriver adjustable control which compensates for the frequency dependent effects of metal SLAVE I O Post compressor signal for use with ancillaries 15V 150mA DC OUTPUT 3 pin power Mini DIN LINE INPUT 6 4mm Jack socket for balanced line level signals MIC INPUT XLR socket for use with balanced microphones GAIN BOOST Increases gain of MIC input by 15dB PHANTO...

Page 4: ...l cold LINE INPUT MIC INPUT SLAVE I O LOOP CONNECTOR Signal TIP SOURCE TO ILD500 SLEEVE RING LINE INPUT Connection of 3 pole plug Use Twin screened cable Must be 3m or less Unbalanced Balanced TIP RECORDING DEVICE TO ILD500 SLAVE I O SLEEVE RING Connection of 3 pole Plug to use Slave I O socket for recording output Signal 8 00mm 20 00mm use either NL4 connections 1or 2 or both as required 1 2 LOOP...

Page 5: ...nel exhaust of the unit Both of these vents must be unobstructed for satisfactory cooling If the unit is installed in an enclosed environment sufficient air flow into the enclosure must be provided through vents fans or other means such that the units exhaust air is not recycled to the inlet causing it to OVERHEAT Slave I O Output Metal Loss Correction Compression LEDs Current LEDs Overheat LED Mi...

Page 6: ...llary units such as microphone pre amps or signal processing units 1 Turn all controls fully anti clockwise 2 Connect the loop cable into the Loop connector supplied Where using a perimeter loop floor ceiling level the feed cable should be tightly twisted and less than 20m in length Total resistance of loop and feed must be between 0 3W and 2 0W at DC The Designing Induction Loops handbook contain...

Page 7: ...nce with respect to a Magnetic field strength This will vary across the coverage area due to layout metal loss and LOOP CURRENT b Frequency response Metal losses tend to increase with frequency and may require the adjustment of the METAL LOSS CORRECTION As a result of this analysis adjust the LOOP CURRENT and set the METAL LOSS CORRECTION on the rear of the unit to achieve best sound quality This ...

Page 8: ...eck that the LOOP ERROR or OVERHEAT LEDs are not illuminated Ensure the POWER LED is illuminated and not flashing Remove any connection to the SLAVE I O socket Check that the loop cable is connected terminated correctly and inserted into the LOOP OUTPUT socket Check the loop cable is not open circuit short circuit or connected to earth see Instability or high frequency noise section of Troubleshoo...

Page 9: ... currents at audio frequencies If the loop cable is run close to sensitive signal cables it may be possible to induce a signal back into the input of the amplifier causing feedback Cable runs and loop wires should be kept well apart from each other To avoid interference a proximity of 300mm should only be run for a few meters Always used balanced 3 wire circuits where possible 3 Instability can ca...

Page 10: ...e in rear of unit Unplug the loop and AC power supply from amplifier and replace the failed fuse with the spare fuse in AC power input fuse tray Reconnect the AC power supply and switch on If the fuse fails again return the unit to Ampetronic for evaluation it may well be covered under warranty which will be invalidated by removing the cover If the fuse does not fail a loop error may be indicated ...

Page 11: ...200 600W Loop Monitor Sensitivity 70dBu 245uV for full RMS 3 5mm 3 pole stereo jack socket output 0 675Vpk at 9 0Apk output Overload 5dBu 436mV RMS 15V 150mA DC Output Line Input 3 pin power Mini DIN socket 6 4mm 3 pole Jack socket Regulated DC output for powering Input Impedance 1MW Ampetronic pre amps accessories Sensitivity 30dBu 24mV for full RMS Environmental output Ventilation See Installati...

Page 12: ...e 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 com products warranty without which the warranty will be valid for two years only The five year warranty is dated from the time the equipment leaves Ampetronic and NOT when it is installed Manufacturer Ampetronic Ltd Northern Road Newark Nott...

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