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General FAQs |
Open Frame FAQs |
TouchScreens FAQs |
Video Monitor FAQs |
Sunlight Readable Monitor FAQs |
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General: |
Q:
I would like to adjust the brightness of the display.
A:
The display output may be adjusted from all dark to all white,
or anywhere in between, for various applications. Please adjust
the contrast as well as the brightness to achieve the desired
result. (back to top)
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Q:
The color on the screen is abnormal. How can I fix it?
A:
Check the VGA cable connectors at either end; one or two of
the pins may be bent so the color signal is lost. You may need
to replace the cable or bend the pin back to its proper
position.
(back to top)
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Q:
Graphics show up well on the screen, but some letters are
blurred. How do I fix this?
A:
Please set the adjustment options clock and phase, for
vertical and horizontal pixel alignment to improve focus and
clarity. Here’s how:
1. Go to Windows START and click on SHUT DOWN. The screen will
dim ( the black and blur wave will be all over the screen).
2. Pull down the main menu of the on-screen display.
3. On the main menu, select POSITION.
4. Adjust the clock and phase while watching the display until
the least black-and-blur wave appears on the screen.
If you tried this and the display fails to improve, please
call us for an RMA # and ship the monitor back to us.
(back to top)
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Q:
What is the backlight life for your FPT-1503A and FPT-1814A?
A:
The 18" monitor backlight has a life of 15,000 hrs; the 15"
will light for 25,000 hrs.
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Q:
I would be interested to order some flat-panel display samples.
What should I do?
A:
Simply place an order and indicate
on the purchase order that it is an evaluation unit. We require
customers to prepay for the sample unit, either by credit card
(Visa or MasterCard) or COD.
After you receive the unit, please check it thoroughly to make
sure it works properly. Please pay attention to the LCD panel
(screen) itself; it is easy to scratch. If you receive a damaged
unit, please call East Stone ASAP.
(back to top)
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Q:
For equipment design, which type of LCD monitor should I use –
STN or TFT LCD active color matrix display?
A: East Stone provides
only Active Matrix (TFT) Color LCD monitors, because of the high
quality and availability of future supply. You may save money
now if you purchase the mono STN LCD display, but in the near
future there will likely be no cost difference between color TFT
and mono STN, and the mono STN manufacturers are likely to phase
out that product, causing you higher maintenance costs on the
cheaper display.
(back to top)
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Q:
Do all East Stone LCD products include the inverter? What is it
for?
A:
Yes, all of our products include
inverters. The driver board may be an A/D conversion board for
PC use or a video signal detection board for video player use.
(back to top)
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Q:
Removing the protective plastic sheet from an 18" LCD monitor
left a “blemish” on the screen. Is it OK to apply cleaning
chemicals to the LCD screen?
A:
A: When you remove the protective plastic sheet, which is
necessary to keep the screen from getting scratched, sometimes a
little glue is left behind.
We recommend a solution of
isopropyl alcohol (that you can buy from drug store) and water,
either 1:1 or 2:1. Rub gently with cotton that had dipped some
alcohol solution.
If the glue is very stubborn, try pure alcohol (do not mix with
water), but rub very softly. Please do not use petroleum
solvents on your TFT LCD glass. They would erode the polymer
film screen coating, especially under hard rubbing.
(back to top)
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Q:
What's the maximum distance of serial extension cable can
support from ELO resistive touch screen?
A:
From 49.5' to 150’ through test.
(back to top)
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Q:
We want to integrate a East Stone LCD screen into an automated
printing press. When the machine cuts the paper, it creates a
great deal of static electricity. Will this static charge harm
the printed circuit boards in the FPT-1212O series monitor?
A: No. The FPT-1212O has passed the ESD test (static
test, contact
8KV and air 12KV test). As long as the monitor is grounded
after installation and the strength of the static charge remains
lower than these amounts, which it should, the monitor will
function properly without any problem. Also, this open frame
monitor has a metal chassis that protects the printed circuit
boards. This will greatly minimize the hazard. (As you all know,
static electricity is strong enough to damage unprotected
circuits on some very fine electronic devices.)
(back to top)
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Open Frame: |
Q:
Can I relocate the control panel on the monitor?
A:
On the open-frame module, the control panel can be moved to
the back of the module. On our other models, the control panel
is fixed and cannot be moved. (back to top)
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Q:
How come your open frame units do not have any certificate
sticker at the back? Are they failing to meet the standards?
A:
Of course not. All our products have earned all the standard
industry certificates before we sell them. But only the monitors
with enclosures have the certificate sticker. Once the
enclosures are removed, those certificates are not applied on
the open frame units.
(back to top)
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Q:
What’s the difference
between the East Stone FPT-1503O and FPT-1503VO?
A:
The 1503VO model is an upgraded
version of the 1503O. It provides NTSC or PAL composite RCA and
S-Video interface, plus the VGA signal which the FPT-1503O
originally had.
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Q:
What is the resistance to shock-wave sound in your FPT series
open-frame VGA monitors? How many "G" forces can they stand
before the LCD panel breaks?
A:
A: Certain high frequencies, caused in military applications,
can crack the glass in a flat panel display. Here
are the shock-wave specifications:
Model Number
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G
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Time
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Position
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FPT-1212A/B/O
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50 MAX
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18 ms
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+/- X,Y,Z direction
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FPT-1503A/B/O
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50 MAX
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6 ms
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+/- X,Y,Z direction
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FPT-1814A/B/O
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50 MAX
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25 ms
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+/- X,Y,Z direction
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(back to top)
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Q:
Can you provide a mechanical drawing to help me design a metal
cabinet around your open-frame unit?
A:
A: Yes, of course. All mechanical drawings are available upon
request.
Please send us your company name and street address.
(back to top)
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TouchScreens: |
Q:
The touchscreen doesn’t respond to touch. Can I fix it myself?
A:
Several things can cause touchscreen malfunction. First, the
pins on both sides of the connector heads may be bent, causing a
lost signal. Second, the touchscreen serial cable may not be
working.
Otherwise, the touchscreen controller inside the monitor may
be out of order. Please do not try to fix it yourself. Instead,
call us for technical support.
(back to top)
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Q:
The touchscreen cursor tends to stay in one position no matter
how I try to move it. Is there anything wrong?
A:
From your description, I would say that the frame is coming in
contact with the active area in that corner. As the LCD heats
up, the metal expands and forces the touchscreen against the
frame. Try loosening the frame and see if it works properly.
Check for clearance in that corner also.
(back to top)
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Q:
What is
the warranty on your touchscreens? I understand that the monitor
itself has a one-year warranty.
A:
All our monitors carry a 1-year warranty.
Warranties for Accutouch
touchscreens are 5 years, and 10 years for IntelliTouch
touchscreens.
There is no standard way of measuring MTBF (Mean Time between
Failure) for a touchscreen, but Accutouch touchscreens have been
tested to more than 35 million touches in one spot with a stylus
similar to a finger, and IntelliTouch touchscreens have been
tested to more than 50 million touches. The touchscreen
controller MTBFs are typically 2-4 times longer than that of the
display. (back
to top)
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Q:
After calibration, we checked the accuracy of the touch-point
versus the actual activation point. The lower left quadrant was
always about 1/8th of an inch off from the actual calibrated
point. Usually, to the lower right side of the actual activating
point. The other three quadrants were pretty much on.
A:
Actually, the standard deviation spec is around 3/32" (meaning
that roughly 60% of touches will be within that range of
accuracy), but the max deviation spec is around 3/16". If
they're only off an eighth of an inch in the corner, they are
within spec. Are you trying to run Windows with a touchscreen?
That's pretty tough to do (actually, it's easier to run Windows
with a mouse than with touch). If you are trying to run Windows,
you should go to Control Panel, Display, Appearance and increase
the size of the Active Title Bar to around 40, to make the icons
big enough to touch easily. For touch applications, the bigger
the touch zones, the better.
(back to top)
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Q:
I installed the touchscreen driver from the ELO website , but my
touchscreen monitor is still not working.
A:
A: Make sure the touchscreen monitor serial port is connected to
your computer during the installation.
(back to top)
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Q:
Can a touchscreen monitor be placed as far away as 50 feet from
its operating PC? Will the signal lose strength because of the
distance?
A:
A: Not if you use a monitor with an internal serial
touchscreen controller, plus a high-quality low-capacitance
cable to connect between the serial output in the monitor to the
operating PC. (back
to top)
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Q:
Are fingerprints and dirt a problem on touchscreens?
A:
Dirt and fingerprints do not affect the operation of a properly
sealed
Resistive or Surface Acoustic Wave touch display. Use bright,
patterned
background colors to minimize the visual effects of dirt and
fingerprints.
(back to top)
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Q:
What can I use to clean the touchscreen?
A:
Any standard glass cleaner can be used to clean the Surface
Acoustic Wave touchscreen, but cannot be recommended to clean
the Resistive touchscreen. Always spray the glass cleaner on the
soft cloth or towel and then gently rub the touchscreen for
cleaning. Glass cleaner is sprayed directly on the monitor could
possibly leak inside a non-sealed unit and cause damage.
(back to top)
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Q:
Will vinegar or ammonia hurt the touchscreen?
A: We recommend that do not use the vinegar to clean the
touchscreen. Ammonia is OK, but be careful the liquid do not
leak inside non-sealed units.
Again, spray the ammonia liquid on the soft cloth and then
gently rub the touchscreen for cleaning. Basically, we strongly
recommend that before you torch the touchscreen, please make
sure your fingers is clear, then that will avoid unnecessary
cleaning to damage the touchscreen.
(back to top)
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Video Monitor: |
Q:
Can we order VGA
monitors from East Stone with the video signal interface built
in?
A:
Our 15” & 18” VGA & Open Frame
monitors provide both Video and VGA interfaces. On our other
current VGA monitors, video interfaces can be custom-made on
demand, but the lead time is estimated to be 3-6 weeks longer.
(back to top)
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Q:
How is the East Stone Small Video LCD Kit configured?
A:
Our PM series models are assembled by
our customers, according to their own demands or applications.
The PM series includes a separate panel, driving board and
inverter, not connected. Clients may put the panel and board
together any way they want. For example, the board may not have
to be on the back of the panel.
(back to top)
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Q:
I have one of your PM-series small LCD kits, and I can’t figure
out how to wire the connection between the driving board & the
LCD panel. The I/O connector is not specified.
A:
You need a 15-pin connector made by
Molex. The part number is 53398-1590. Please visit
www.molex.com
& enter the part number in the search box. You will get a
schematic drawing, plus a detailed description.
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Sunlight Readable Monitor: |
Q:
We have a high brightness environment--a kiosk that will
stand in direct sunlight. How bright does an LCD screen have
to be for it to be readable in direct sunlight? Does it make
sense to request 3,000 nit brightness on our LCD monitors?
A:
Usually any brightness of
more than 1,000 nits on an LCD screen is onsidered sunlight
readable. The reasons are:
1. Direct sunlight (reflected off white paper) will
measure about 36,000 nits,
so neither 1,000 or 3,000 nits will be readable in
direct sunlight. Both
would be lost in the glare. If you
could construct an LCD screen that would
put out 36,000 nits, it would be
blinding. More brightness is not the
answer.
2. Any outdoor kiosk needs a hood or canopy to prevent
sunlight from
shining directly on the screen, both for protection of
the screen and to
reduce heat. It is also a good idea to
turn the unit so the screen stands at
an angle to the sun. Both 1,000 nits
and 3,000 nits will be quite sufficient
in this environment.
3. Reports say there are experiments conducted in 23°C
under direct
sunlight. With the backlights off, the heat from the sun
trapped on the LCD
panel surface causes the temperature
to jump up to 40°C in 30 minutes,
not counting the temperature that would
be generated by backlights,
electronic components, and
the inverter. Usually the unit's operating
temperature range is from 0°C to 50°C.
The backlights have a similar
operating temperature range. Even with
the backlights off, direct sunlight
would generate too much heat over time.
With the backlights on, the unit
and the sun together would generate way
too much heat, probably for even
the backlights to operate.
4. Theoretically, 3,000 nits is not difficult to produce
by adding more
backlight tubes, but thermal generation and ventilation
would be very
difficult issues to manage.
(back to top)
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Q:
Can East Stone provide 17" and larger size LCD monitors with
1,000 nits?
A:
It is hard to make a 17" or larger LCD screen that
bright. There are several factors that affect results:
1. Brightness depends heavily on LCD panel structures;
usually the wider the
viewing angle and the higher the contrast
ratio, the more difficult it is to
make them brighter.
2. To keep the same contrast ratio is difficult
when improving brightness.
3. Most large high brightness products on the market range
in brightness
from 450 to 700 nits, and that tells us
how difficult it is to make them more
than 1,000 nits.
(back to top)
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Q:
Can East Stone provide high brightness monitors with
touchscreens, light sensors, automatic brightness adjustments,
water/splash proofing, and panel mounts?
A:
East Stone has a touchscreen option on the 12.1" and 15" high
brightness monitors, but all these can be easily customized for
your projects. We only need to know your
lead-time; we may have to charge you something for development
and sampling.
(back to top)
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The leading small company in display technologies.
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