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LD Systems PRE ST 1 Manual De Usuario página 9

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  • MEXICANO, página 65
CONNECTIONS, CONTROLS AND DISPLAY ELEMENTS
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POWER CONNECTOR
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IEC socket to the power supply of the device (power cable included in the packaging).
FUSE
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Fuse holder for 250 V fuses (5 × 20 mm). IMPORTANT NOTE: Only replace the fuse with a fuse of the same
type (see note on the housing). If the fuse blows repeatedly, please contact an authorized service center.
ON/OFF
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Rocker switch to turn the device on and off.
EMERGENCY
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5-pole terminal block connection for the installation of an acoustic emergency call system. The poles
+, - and G correspond to a balanced line input. Poles C and + are used for the connection of a separate
mute switch (terminal block included in the packaging). The contact closure of the EMERGENCY channel
(Poles C and + closed) mutes all other input channels, regardless of the VOX settings.
CLIP: The red CLIP LED indicates the input is being operated at the distortion limit. You should reduce
the signal level using the GAIN control or the volume control on the playback device so that the CLIP LED
is no longer lit.
VOX: The VOX control (Voice Operated Exchange) makes it possible to set a threshold for the emergency
audio signal in order to activate an automatic mute switching circuit. When the level at the EMERGENCY
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input reaches the set threshold, all other microphone and line channels are muted. This ensures that
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the emergency signal can be heard clearly. In addition, in this case the EMERG indicator is lit on the
front of the amplifier. As soon as the level of the emergency signal falls below the set threshold,
the other channels are no longer muted and the EMERG indicator goes out. With this setting, the
EMERGENCY channel always has the highest priority. The emergency signal is routed directly to the
audio output LINE OUT internally.
If the VOX control is set to minimum (turned all the way to the left), automatic muting via the VOX
switching circuit is deactivated and the EMERGENCY channel can be used as an additional line channel.
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+
-/G
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