ET120 & ET60 Installation & Maintenance Manual
Indications and Controls
Indicators
Limit
The AFILS amplifier is receiving a signal at a level where the limiter is starting
to operate, this LED should blink on loud peaks in the audio, if it is lit
continuously the audio input is too loud and may be distorting the input stage.
Power
Indicates healthy AC mains available.
Loop
A four LED bar graph showing the peak output current from the amplifier it is
permissible for the top red LED to light on peaks (when the limit LED lights)
but this should not be on permanently, as this may lead to the unit switching
off due to thermal protection, and the audio distorting
Level Controls
Mic
Sets the Level of the Microphone inputs.
Line
Sets the level of the Line inputs.
Metal loss correction to restore the high frequencies in areas containing large
quantities of metal
Drive
Sets the output current from the loop amplifier.
Important Safety Information
This Equipment must only be installed and maintained by suitably skilled and competent person.
This Equipment is defined as Class 1 in EN60065 (Low Voltage Directive) and must be EARTHED.
C
AUTION
INDOOR USE ONLY
W
ARNING
SHOCK HAZARD-
ISOLATE BEFORE OPENING
W
ARNING
TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK, DO NOT EXPOSE THIS
UNIT TO RAIN OR MOISTURE
W
ARNING
THIS UNIT MUST BE EARTHED
W
ARNING
NO USER SERVICEABLE PARTS
Each amplifier unit requires a 3A spur or wiring into a 13A plug top fitted with a 3A fuse, this
should be done by a qualified person
Document DCC ET12 7001-03 Rev 1 Aug 2005
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