Mitsubishi DV300 Specifications download pdf (Page 30)

DV300/DV301B 30" Multimedia Information Display

11. Technical Specifications

LCD PANEL

• Type TFT LCD

• Screen size 29.5 inch

• Pixel Pitch 0.5025 x 0.1675 mm x RGB

• LCD Panel type 1280 x 768 pixels

R.G.B. vertical stripe

Hard coating surface, anti-glare polarizer

• Effective viewing area (H) 643.2 x (V) 385.92mm

• Display Colours 8 bits interface (16.7M colours)

PC SCANNING

• Vertical refresh rate 56Hz-61Hz

• Horizontal frequency 31kHz-63kHz

PC VIDEO

• Video dot rate < 80 MHz

• Input impedance

- Video 75 ohm

- Sync 2.2K ohm

• Input signal levels 0.7 Vpp

• Sync input signal Separate sync

• Sync polarities Positive and negative

• Input Frequency WXGA Hsync 48 kHz, Vsync 60 Hz (N.I.)

SVGA Hsync 38 kHz, Vsync 60 Hz (N.I.)

VGA Hsync 31 kHz, Vsync 60 Hz (N.I.)

• Video interface D-sub, S-Video, TV-RF, SCART (Europe) or composite and

components video (others)

AUDIO

• Input level for PC/SVHS/SCART 500 mV nominal

• Loudspeaker 5W Stereo Audio (2.5W/channel RMS x2, 200Hz~10kHz,

4 ohm, 10% THD)

Q: What are the advantages of TFT LCD compared with CRT?

A: In a CRT monitor, a gun shoots electrons and general light by colliding polarized electrons on

fluorescent glass. Therefore, CRT monitors basically operate with an analogue RGB signal. A TFT LCD

monitor is a device that displays an input image by operating a liquid crystal panel. The TFT has a

fundamentally different structure than a CRT: Each cell has an active matrix structure and independent

active elements. A TFT LCD has two glass panels and the space between them is filled in with liquid

crystal. When each cell is connected with electrodes and impressed with voltage, the molecular

structure of the liquid crystal is altered and controls the amount of inlet lighting to display images. A TFT

LCD has several advantages over a CRT, since it can be very thin and no flickering occurs because it

does not use the scanning method.

Q: Why is a vertical frequency of 60Hz optimal for an LCD monitor?

A: Unlike a CRT monitor, the TFT LCD panel has a fixed resolution. For example, an XGA monitor has

1024x3 (R, G, B) x 768 pixels and a higher resolution may not be available without additional software

processing. The panel is designed to optimise the display for a 65MHz dot clock, one of the standards

for XGA displays. Since the vertical/horizontal frequency for this dot clock is 60Hz/48kHz, the optimum

frequency for this monitor is 60Hz.

Q: What kind of wide-angle technology is available? How does it work?

A: The TFT LCD panel is an element that controls/displays the inlet of a backlight using the dual refraction

of a liquid crystal. Using the property that the projection of inlet light refracts toward the major axis of

the liquid element, it controls the direction of inlet light and displays it. Since the refraction ratio of inlet

light on liquid crystal varies with the inlet angle of the light, the viewing angle of a TFT is much narrower

than that of a CRT. Usually, the viewing angle refers to the point where the contrast ratio is 10. Many

ways to widen the viewing angle are currently being developed and the most common approach is to

use a wide viewing angle film, which widens the viewing angle by varying the refraction ratio. IPS (In

Plane Switching) or MVA (Multi Vertical Aligned) is also used to give a wider viewing angle.

Q: Why is there no flicker on an LCD Monitor?

A: Technically speaking, LCDs do flicker, but the cause of the phenomenon is different from that of CRT

monitor — and it has no impact of the ease of viewing. Flickering in an LCD monitor relates to usually

undetectable luminance caused by the difference between positive and negative voltage. On the other

hand, CRT flickering that can irritate the human eye occurs when the on/off action of the fluorescent

object becomes visible. Since the reaction speed of liquid crystal in an LCD panel is much slower, this

troublesome form of flickering is not present in an LCD display.

Q: Why is an LCD monitor virtually free of Electro Magnetic Interference?

A: Unlike a CRT, an LCD monitor does not have key parts that generate Electro Magnetic Interference,

especially magnetic fields. Also, since an LCD display utilizes relatively low power, its power supply is

extremely quiet.

1 2 ... 25 26 27 28 29 30 31 32

Comments to this Manuals

No comments

Mitsubishi DV300 Specifications Page 30

Comments to this Manuals

Related products and manuals for TVs & monitors Mitsubishi DV300