Visual Characteristics; Test Conditions; Brightness; Image Size - Philips 273E3LHSB/00 Service Manual

3.13.4 Audio Amplifier
The amplifier shall provide two channels of audio up to 2 Watts per channel from 100 Hz to 20 kHz, based
upon an audio signal input of 1.3V RMS per channel.
3.13.5 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%.
3.13.6 Speaker Sensitivity
The speakers shall support a minimum sensitivity of 75 dB +/- 3 dB at 2W/1m at 1 kHz.
3.13.7 Maximum Audio Card Output
The monitor audio amplifier shall accept a maximum input voltage of 1.5 Vrms and meet the following
requirements at the maximum monitor volume setting:
1. The ratings of the audio amplifier may not be exceeded.
2. The ratings of the speakers may not be exceeded.
3. There must not be any clipping of the audio amplifier output signal.
4. Voltage dividers may be used to reduce the input signal level.
3.13.8 Monitor Audio Amplifier Input Impedance
The monitor audio amplifier shall have minimum 10K Ohm AC input impedance

4. Visual Characteristics

4.1 Test conditions

Unless otherwise specified, this specification is defined under the following conditions.
1) Input signal: As defined in 3.3, 1920 x 1080 non-interlaced mode (1920 x 1080 @60Hz 146.25 MHz),
signal sources must have 75 ohm output impedance.
2) Luminance setting: controls to be set to 300 nits with full screen 100 % duty cycle white signal
3) Warm up: more than 30 minutes after power on with signal supplied.
4) Ambient light: 400 -- 600 lux.
5) Ambient temperature: 20 ± 5 C

4.2 Brightness

Follow Panel specification.

4.3 Image size

Actual display size

4.4 Brightness Uniformity

Set contrast at 100% and turn the brightness to get average above 300 nits at centre of the screen.
Apply the Fig 1; it should comply with the following formula:
Where B_max = Maximum brightness
597.89 mm (H) x 336.31 mm (V)
B_min
B_max
B_min = Minimum brightness
X 100% > 75%
Meridian 3
73