DSPPA MP7825 Manual de instrucciones - Página 12
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Public Address System
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1． Zone Control
2 100V fixed-voltage output interfaces are provided for the equipment to connect 2 zones.
After secure connection of wires, Zone On/Off keys (34 & 35) of two zones on the front panel can be used for
switching On/Off the zones. When one of the keys is pressed down, the corresponding zone is on, and the
corresponding indicator (32 or 33) is on; when the key is released, the corresponding zone is off, and the
corresponding indicator is off.
2． Radio
Press "TUNER" key to access to radio mode, and the equipment will select built-in tuner as the sound source. If
the sound source was selected at the last shut-down, the equipment will access to radio state at the current
start-up, and the corresponding indicator is on. "TUNER" will be displayed for 1 second on the screen, and the
equipment will return to the received band, preset memory frequency or non-preset memory frequency at the last
use of radio sound source. At this moment, the following operations can be performed to the radio sound source:
Band selection: Press BAND key to switch between FM and AM bands.
Auto station search: Press and hold the DOWN or UP key for over 1 second, and the equipment will
automatically search for stations towards high frequency or low frequency, and the frequency displayed on the
screen will continuously flash. When a station is found, the frequency on the screen stops flashing, and the
current frequency found will be displayed on the screen. When the found signal is stereo signal and is strong
enough, "STEREO" sign will be lit on the screen; otherwise, the sign won't be lit or flash.
Manual station search: Slightly press the DOWN or UP key (held for not more than 1 second), and the equipment
will step once (50kHz per step for FM, and 9kHz per step for AM) towards high frequency or low frequency, and
the corresponding frequency will be displayed on the screen. Manual station search is suitable for searching a
station of which signal is weak.
Station Storage: After a station is found, the station can be stored to the preset station storage No. by followings:
Press MEMO key, and "MEM" sign and a preset storage No. "CHXX" will flash on the right top corner of the
screen. Press M-DOWN or M-UP key to select one of the storage Nos. from CH10 to CH20, and then press the
MEMO key again to store the station found to the storage No.. After that, press M-DOWN or M-UP key to call
the station of the storage No.
3． External Sound Source
When an external sound source is necessary, please use the AUX interface. Press "AUX" key, and the
corresponding indicator will be lit and the AUX channel will be on. Sound sources like CD player, DVD player,
tuner and cassette can be connected to the AUX input terminal.
4． Operating Instructions for Microphone
Since a phantom power supply is provided for the equipment, microphones of different types can be used: both
dynamic and condenser microphones can be used. When the phantom power supply is switched to "PHANTOM"
position, a condenser microphone is available; when the phantom power supply is switched to "MIC" position, a
dynamic microphone is available.
To avoid strong feedback, please adjust the microphone volume down through the microphone volume knob on
the front panel before plugging the microphone. Since all microphones adopt XLR interface, please check the
direction when connecting. The gain of the microphone can be adjusted through "GAIN" knob for the best voice
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Radio and other broad cost mode
收音及其他播放模式
DVD/Radio/Broadcast Power Amplifier