Zenitel VINGTOR STENTOFON EA1400, Инструкция по установке и эксплуатации

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14 EA1400/1600 Installation & User Manual A100K11939
4 Startup & System Check
4.1. Preparations

All wiring and connections should be finished.

Turn all volume controls down to the minimum position (counter-clockwise).

Connect the power cord to the mains outlet.

Turn the mains switch ON and check that the Power LED is on. Fault and Line Error LEDs may blink
shortly at the beginning, but it should not be lit continuously.

None of the VU meter LEDs should be lit.
4.2. Sound

A signal source must be connected to the Line In input (0.5-1.5Vrms).

Turn the signal source on and set the amplifier volume- and tone controls to the mid position.

Adjust the source volume to the appropriate level.

Check that all loudspeakers connected to the Speaker Loop output (70V or 100V) are sounding
without distortion.

The VU meter should indicate with a pulsating green light.

The PA amplifier has a mute control, which means that if no input signal is present, then Audio Line
input will be muted.
4.3. Setting Maximum Output Voltage and Power Using a 1 kHz Source
To achieve 100Vrms level without overloading/clipping, the following procedure is recommended:

Turn the amplifier volume control slowly clockwise until the red VU Meter LED lights up. The green
VU Meter LED shall become brighter during this process.

Turn the volume control slowly counterclockwise a little at a time until the VU Meter’s red LED
extinguishes.

Setting of Treble/Bass can affect clipping detection. If this phenomenon occurs, it should be
adjusted with the volume potentiometer.

If Line Monitoring is enabled, its amplitude will be added to the main signal. If the clipping level is
exceeded, it should be adjusted with the volume potentiometer by reducing the amplitude.
4.4. Line Monitoring
The Line Error switch on the rear side of the cabinet should be ON to enable line monitoring.
Line Error switch ON : Line Monitoring functions are enabled.
Line Error switch OFF : Line Monitoring functions are disabled, and there is no line error detection.
The Line Monitoring function can be used permanently (if it is always enabled) or temporarily to test
loudspeaker loops only by service interval. Remote control for temporary or periodical use is preferred. For
more information regarding external control, please refer to section 3.8. Optional Connections .