Service manual

ViewSonic Corporation Confidential - Do Not Copy Q9b-2
10
2-7 AUDIO INTERFACE (SPEAKER SPECIFICATION)
Speaker specification
Line input connection 3.5 mm stereo jack
Line input signal 0.7 Vrms
Line input impedance 18 kOhm
Maximum power output (Electric) 1 W@ < 15 % distortion
Signal to Noise Ratio 50 dB
Frequency response 200 Hz – 10 Khz
Distortion < 5 % THD (@1kHz)
Vibration
There should be no audible vibration with
volume at 100% and treble / bass at
default.
Screen image
There should be no affect on the screen
image stability under any conditions.
Connector PC99 requirement Audio in Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
Audio DPMS
Speakers should be off when the rest of
the monitor is in power saving.
Sympathetic
Under following conditions, there should
be no sympathetic heard
1. input <=0.7Vrms
2. Volume OSD <=80
Distance =30cm ±5cm