Philips 237E4QSD/00, Service Manual

Page: 66 / 75

66 Meridian 4
Hot-key definition
M4 OSD Button
definition _ 20111207
Smart image
SmartImage
Profile Definitio
PerfectTune II
(formerly FGA, FACTORY GAMMA
Alignment)
A. PerfectTune must be done after warming 30 minutes at least.
B. PerfectTune must be performed after Auto Color.
C. PerfectTune must be conducted through DVI or scaler embedded patterns.
D.
Delta E < 10
audio
3.17.1 Frequency Response
The amplifier and speaker combination shall provide a frequency response of 300 Hz to
20 kHz, with +/- 3 dB variation over the entire response range.
3.17.2 Total Harmonic Distortion
Total harmonic distortion shall be limited to 5% THD at the maximum wattage speaker
rating specified in section 1.3, at 1 kHz, when the input is 1.0Vrms.
3.17.3 Power Handling
Each speaker transducer shall accept up to the specified Wattage of audio power without
damage or exceeding the frequency response and total harmonic distortion
specifications.
3.17.4 Audio Amplifier
The amplifier shall provide two channels of audio up to 2.0 Watts per channel from 100
Hz to 20 kHz, based upon an audio signal input of 1.0V RMS per channel.
3.17.5 Volume Control
For monitors with a manual volume control, the direction (at the bottom) of the bezel
volume control is “-“ key for Minimum volume and “+” key for Maximum volume. The
default shipping position of the Volume Control shall be approximately 90%.
3.17.6 Speaker Sensitivity
The speakers shall support a minimum sensitivity of 75 dB +/- 3 dB at 2W/1m at 1 kHz.