Q1: What are the benefits of your
DiamondVue series LCD products not found in most commercially
Q2: What is a “nit”?
Q3: What is the difference between “high
brightness” panels and true “sunlight readable” displays?
Q4: What are your standard warranty periods?
Q5: When repairing my monitor, how long
does it usually take?
Q6: How do I get an RMA form?
Q7: What does “slow-scan” mean?
- Steel Front Panel
- Black Powder Coat Finish
- Stainless Steel rear housing.
- Easy access to all major components for repair.
- Includes Internal 115/220 VAC Power Supply. (15” and
- Can be provided with 12 or 24VDC option.
- Corecom Filter to reduce AC line transient noise. (15”
- LCD is attached to the bezel via an engineered support
- 15”& 18” units come standard with 4 different video
inputs: HD15, DVI, RCA, mini-DIN
- Optional BNC’s x5 for SOG, Combined or Separate Horizontal
and Vertical Sync (15” and above)
- Optional “reverse imaging”
- Optional video boards for unique video timing
- All connectors and cable tie point are secured and glued
- More overall rugged design for vehicle applications
or vibration sensitive applications.
- Multi aperture support channel to accommodate either
touch or A/R window.
- As an option, can accept “Low-Scan” and “non-standard”
video formats through the use of our low-scan system
board (added cost)
- Membrane front or rear panel controls.
- Stainless steel front bezel are available for all sizes
- Sheet metal parts consist of only 4 items: Front Panel,
Support Channel, Rear Cover & mount for brick power
Photometric brightness is an old and deprecated term for
luminance. (Term of photometry)
The physical measure of brightness. Luminous intensity per
unit projected area of any surface, as measured from a specific
Luminance (usually 'L' in formulas) is the amount of visible
light leaving a point on a surface in a given direction. This
"surface" can be a physical surface or an imaginary plane,
and the light leaving the surface can be due to reflection,
transmission, and/or emission
Standard unit of luminance is candela per square meter (cd/m2).
(also called Nits in the USA, from Latin "nitere" = "to
There are several older units of luminance:
| Apostilb (deprecated)
|| 1 asb = 1/pi cd/m2
| Blondel (deprecated)
|| 1 blondel = 1/pi cd/m2
| Candela per square foot
|| 1 cd/ft2 = 10.764 cd/m2
| Candela per square inch
|| 1 cd/in2 = 1550 cd/m2
| Footlambert (deprecated)
|| 1 fL = 3.426 cd/m2
| Lambert (deprecated)
|| 1 L = 104/pi cd/m2
|| 1 nit = 1 cd/m2
| Skot (deprecated)
|| 1 skot = 10-3/pi cd/m2
| Stilb (deprecated)
|| 1 sb = 10'000 cd/m2
Typical luminance values are:
| 1.6 * 109 cd/m2
|| Solar disk at noon (don't look!)
| 600'000 cd/m2
|| Solar disk at horizon
| 120'000 cd/m2
|| Frosted bulb 60 W
| 11'000 cd/m2
|| T8 cool white fluorescent
| 8'000 cd/m2
|| Average clear sky
| 2'500 cd/m2
|| Moon surface
| 2'000 cd/m2
|| Average cloudy sky
| 30 cd/m2
|| Green electroluminescent source
| 0.0004 cd/m2
|| Darkest sky
Regular color LCDs are not bright enough to ensure complete
image clarity under direct sunlight conditions. Many of our
products are significantly brighter than standard off-the-shelf
LCDs making our products ideally suited for use in any lighting
environment. We build products to maximize brightness at the
lowest possible power consumption. These “actively” enhanced
panels offer a “white” color tone that closely matches normal
sunlight and provides a crisp image in any lighting condition.
A wide dimming range provides various levels of screen brightness,
up to almost 2000 nits!!!
Other VarTech “sunlight” readable products take a different
“passive” approach. Utilizing advanced proprietary optical
bonding technology; we overcome optical challenges for the
LCD user, at an affordable price. In a wide assortment of
applications, standard LCD displays in high ambient lighting
conditions appear to be "washed out" due to excessive reflection
of ambient light. Commercially available LCDs, especially
when protected by a separate cover glass or plastic shield,
do not deliver enough brightness to make the display functional
in outdoors or in other high ambient light applications. Our
unique process results in a reduction of ambient light reflections
compared to other display enhancement technologies, at an
We seal either a top cover glass or touch screen directly
to the face of the display. Our bonding process eliminates
the air-gap between the display and the cover glass, vastly
reducing reflective light, which causes visual washout of
the display image. It also enhances structural integrity by
supporting the LCD cell with the cover glass. The bond provides
shock protection, and eliminates fogging caused by trapped
moisture in the air-gap.
- It provides the best reduction of ambient light washout
of any commercially available technology
- It has a lower cost than most other competing technologies
- It offers superior ruggedization, enhancing the display
durability caused by vibration, shock and other environmental
So, just because an LCD panel offers above normal brightness
(example 750-1000 nits cd/m²), does NOT mean it can be adequately
viewed under direct sunlight conditions.
Two years on nearly all CRT models and LCD flat panels.
As we offer several levels of service programs it usually
depends on the type of program chosen. For instance, totally
rebuilding the monitor will take approximately 5-7 days, while
basic repair usually takes about 2-3 days.
We have two North American repair facilities. To request
an RMA form, please contact us at: http://www.vartechsystems.com/contacts/
Slow Scan is a relatively new description used to differentiate
Legacy Monitors from more modern high resolution (high scan
rate ) types. Basically any monitor operating below VGA standard
( 31.5kHz Horizontal Scan Rate ) can be classified as slow
scan. Slow Scan signals are invariably non-standard in terms
of synch pulse widths, polarities and active video times as
no international standards existed when the original control
systems were conceived.
VarTech has a range of ruggedized industrial-grade CRT and
LCD Monitors operating in the range 15-40+kHz ( giving Slow
Scan + VGA/SVGA performance ). They are available in Desktop,
rack mount, panel mount, console mount or open-frame chassis
formats for Analogue or TTL level video inputs. Autoscanning
and Auto-recognition of input signals are key features.
We also offer a unique range of Slow Scan LCD Monitors which
on one hand, solve Legacy problems in the 15-30kHz range,
and on the other provide an upgrade path to SXGA resolutions
- all in the same monitor!