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NEC AccuSync LCD72VM - Page 107

NEC AccuSync LCD72VM
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5-19
8. Audio System
8.1 Audio Input
Connector type: Φ3.5 stereo mini jack@ back side of monitor
Color of Connector: Pantone284C (Light Blue)
Input level: 500mVrms
Input impedance: 47k
8.2 Headphone Output
Output power: 1.0 W rms/CH @ 1KHz
Total harmonic distortion(@ 1W): <1%
S/N ratio: 50db
Connector type: Φ3.5 stereo mini jack@ front side of monitor
Output power: 1W + 1W
Output level: Same loudness level of sound as build-in speaker. (headphone impedance: 32)
Color: Gray (For white model)
Black (For black model)
8.3 Built-in speakers
Type: Micro Speaker (8, 1W + 1W) without box
Nominal Impedance: 8 Ohm
Maximum Input Power: 1 W/CH
Resonance Frequency: less than 450Hz
Speaker Size: 40 x 20 mm
When headphone connected to headphone jack, speaker outputs should be disabled.
8.4 Characteristic
Frequency band: 250Hz to 20kHz
Total harmonic distortion: 3% (condition: 1W, all black)
2% (condition: 50mW,all black)
Remaining behind hum: 5mVp-p (max)
(Any noise shall not be heard from the point of 30cm distance from the monitor.)
Remaining behind buzz: 5mVp-p (max)
(Any noise shall not be heard from the point of 30cm distance from the monitor.)
S/N ratio: 40dB (condition: all black)
S/buzz ratio: 40dB (condition: all white, contrast max)
Channel separation: 30dB
Right/left output deviation: ±1%
Sound noise by vibration of cabinet should not be heard at condition of 70% volume, 1kHz 500 mVrms input,
250Hz to 20kHz range.

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