Opus Technologies LD Serie Manuel D'installation Et D'utilisation page 15

LD Series | Installation and user manual
4.6 Adjustment and connection
4.6.9 Switching on
Protect
Power
The unit is powered up using the grey switch on the
front of the amplifier. If the amplifier is powered up
the Power LED will light up in blue.
To turn the unit off, press again the Power switch on
the front of the amplifier again. Please note that the
unit goes into standby mode when it is turned off.
Unplug the power plug from the wall outlet to
completely turn off the unit.
4.6.10 Loop integrity
The green LED on the front of the amplifier is used to
check the loop integrity. If the loop is cut or if the
loop impedance is not between 0.5 and 3 Ohm the
Loop LED will not be displayed and the Protect LED
will be light up. (See figure below)
Loop
Protect
Clip
Power
Loop
Protect
Clip
Power
User manual
Loop
Clip
✓
Loop OK
×
Loop fault, input too high and/or
amplifier overloaded
4.6.11 Protect and Clip LEDs
The " Protect " and " Clip " LEDs light up if :
• The ohmic resistance of the inductive loop is
not between 0.5 and 3 Ohm.
• The corresponding
overloaded or overheated.
• The input level is too high, causing clipping of
the audio signal.
conductor section is
15