2. How can I back up
files to DVD?
1. Go to My
computer:
C:/GV600/Cam01, Cam02
or C:/GV650/Cam01...
2. Put CD in CD Rom,
Hold file folder you
want to copy.
3. move to CD Rom and
release.
4. Burn file on CD.
More info
Top
3. How to central
monitor live video for
many DVR system by V2?
A:
More info
Top
4. How to central monitor live video for many DVR system by Vital Sign monitor?
A
More info
Top
5. How Wireless
Camera Works?
For a wireless system,
connection between the
camera and the display
device is done by a
transmitter and a
receiver. The wireless
system consists of a
camera, a transmitter
and a receiver. Though
our pinhole camera is so
small, we build in the
video/audio transmitter
inside some of our
models of pinhole
camera! The transmitter
sends the video & audio
signals about 700~3300
feet away (depending on
which camera model) to a
small receiver. The
receiver can be easily
connected to a TV,
monitor, camcorder or
standard VCR. Your may
view the video live or
record it on a regular
VHS cassette tape up to
a duration of 8 hours.
The camera can be hidden
inside an object like a
clock radio, air filter
or CD player etc. Most
wireless systems in the
market do not include
audio capability. There
are many models of our
wireless camera
providing both video and
audio transmission.
Please make sure you
choose the right
product.
In all the standard TV,
VCR or monitor, you'll
find an RCA video-input
along with an
audio-input usually
located at the rear of
the unit.
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6.
What should I do, when I see "video lost"? CD?
A.
Please unplug the
connect the power and
camera cable and plug
again. Double
check the power is
connect well in UPS.
B.
Double check the video
cable connect to the DVR
system very well
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7. What is Camera
Resolution meant?
Resolution is a
measurement unit of the
camera's clarity. A
cameras resolution is
determined by the number
of horizontal video
lines (320~480 lines)
that the camera needs in
order to reproduce the
desired image. The
higher the resolution
number, the sharper the
image will be.
Top
8. LUX--How it
affects picture quality?
The illumination factor
LUX (1/10 of a foot
candle) is a
standardized unit to
measure a camera's
sensitivity to light.
The lower the number,
the less light it will
need to reproduce a
clear image. A camera
with a LUX of 1 means it
can see an image during
early evening hours or
just before dusk. A
camera with 0.5 LUX has
the ability to see an
image in a dimly lit
corridor. A 40W
fluorescent lamp will
provide sufficient
indoor light for a
camera with 3 LUX. With
the help of infrared
light, camera can work
with 0 LUX, i.e., under
total darkness, even
better than the human
eyes!
Top
9. What does it mean
by LOS (line of sight)?
LOS refers to the
distance between the
video/audio transmitter
and the receiver in open
space (line of sight).
If there are walls,
partitions or other
obstacles between the
transmitter and the
receiver, the effective
transmission distance
will be much much
shorter. The effective
transmission distance
for clear video/audio
signals depends on the
structure of the walls,
partitions or the
obstacles between the
transmitter and the
receiver. For example, a
steel-embedded wall will
shorten the effective
distance more than a
wooden wall. In order to
improve signal
reception, try to place
the transmitter with its
antenna upright and put
it in a higher position
than the receiver
whenever possible. Or
put the transmitter in
different locations to
get the best video
result.
Top
10. How to choose a
hidden camera for
security or surveillance
purpose?
There are lots of hidden
camera in the market.
Which one is suitable
for you? These cameras
may come with or without
audio capability. Make
sure you choose the one
to suit your needs.
Hidden camera basically
includes (1) Pinhole
Camera: Some are as
small as a sugar cube
with lens opening of 1
mm. It can be hidden
behind any hole larger
than 1 mm. (2) Board
Camera: A small PC board
with built-in mini
camera. Suitable for
hiding into many
objects. (3) Dome
Camera: A mini camera is
built inside a dome-size
plastic obscure
protector. Suitable for
installation on the
ceiling or wall. (4)
Standard Surveillance
Camera: Visible security
camera installed indoor
to scare away unwanted
visitors; (5)
Water-resistant Security
Camera: Standard
surveillance camera with
water-resistant
protective case.
Suitable for outdoor
installation. (6)
Water-proof Hidden
Camera: A small pinhole
or mini camera with
water-proof case so that
it may be put beneath
the water, for example,
inside a fish tank.
The camera technology in
these models is
basically the same for
different models, except
that the camera may
consist of either a CMOS
or CCD image sensor, and
the product size is also
different for different
purpose.
Top
11. Should I buy a
color camera or a B/W
camera?
If you use the camera in
an environment where the
light condition is very
low, it is recommended
that you should buy a
B/W camera. If a color
camera is used under low
light condition, the
video quality obtained
will be less than
satisfactory. Buy a
color camera for a
better view if the light
condition is fair.
Top
12. Should I install
a Night Vision
Projector?
Night Vision Projector
is a device sending out
invisible infrared light
to compensate the light
for the camera. Usually,
the light requirement
for B/W camera is very
low. Some light coming
from a dim light bulb or
a corridor lamp is
already sufficient. If
you want to take video
from a location where
the light is very dim or
no light at all, then
you need to install an
Infrared Night Vision
Projector, or a camera
with built-in infrared
lights. If a color
camera is used under low
light condition (even
with infrared night
vision device
installed), the video
obtained will be in
black and white only.
Please note that our
infrared night projector
only works with B/W
video camera, NTSC or
PAL, but not with color
video camera.
Top
13. Should I buy a
Wired Camera or a
Wireless Camera?
How to copy DVR files to
CDtions where wiring
is difficult, if not
impossible; (b) it can
be moved to different
locations easily, as
often as you like; (c)
it can be hidden inside
a moving object like
inside your cloth, cap,
briefcase or carrying
bag etc. The
disadvantages are: (a)
video stream may be
disturbed or influenced
by other moving objects
or other strong radio
frequencies. A wired
camera is more stable in
this respect. (b)
video/audio transmission
is limited within the
prescribed transmission
range. These
disadvantages will not
occur to a wired camera.
To overcome the
disadvantages of
wireless camera, you
may:
(a) Buy those wireless
models with higher
frequency transmission
band at least 1.2GHz or
above (1.2GHz or above
will avoid the radio
frequency influence from
mobile phones); (b) If
you need to take video
from the wireless camera
a long way from the
receiver, or there are
walls, metallic or steel
obstacles between the
wireless camera and the
receiver, buy a wireless
model with stronger
transmission power, that
isHow to central monitor live video for many DVR system by V2?nger transmission
distance.
Overall, the video/audio
signals from a wired
camera are more stable
than a wireless camera.
Top
14. What is Video
Standard?
Different areas of the
world use different
video standards. North
America uses NTSC,
Europe uses PAL and
SECAM, South America
uses PAL-M, PAL-N, PAL
and NTSC. Almost every
area of the world has a
mixture of video
standards. If your
TV/VCR/camcorder support
multi-systems, you can
use either PAL or NTSC
camera. With a
multi-system video
recorder, you expect an
PAL tape to be
reproduced as a standard
PAL signal, and the same
machine if fed with a
NTSC tape will reproduce
it as a standard NTSC
signal. A multi-system
VCR can also be expected
to make a perfectly
normal PAL recording of
an PAL input signal, and
a perfectly normal NTSC
recording of a NTSC
input signal.
NTSC and PAL standard
are not interchangeable.
For example, you can't
display video input from
a PAL camera on a NTSC
TV.
Top
15. What is PAL, NTSC
and SECAM?
NTSC (National
Television Standards
Committee) is a standard
used in North America
and Japan. It has the
ability to display up to
525 lines of resolution.
PAL (Phase Alternating
Line), a standard used
almost everywhere else
in the world, has the
ability to display 625
lines of resolution.
SECAM (Sequential Color
Memory) is used
sparingly around the
world and can be found
in France, parts of
Greece, Eastern Europe,
Russia, Africa and a few
other parts of the
world. However, any
SECAM country can
display PAL tapes in
full color, but not all
PAL countries can
display all SECAM tapes
in color. Only if they
are true SECAM and not
MESECAM can those VCR's
display SECAM.
Top
16. I can't see my web
site, others can.
What should I do?
Case
A: Your Computer didn't
point to right or new
server.
Double click "my
computer"
Double click "Local disk
(C:)"
Double click "Windows"
Double click "System32"
Double click "drivers"
Double click "etc"
Double click "hosts"
Open with notepad.
Add your web site
related IP space web address.
As sample below:
75.125.152.162
www.rexoptics.com
72.16.240.4
www.saraartgallery.com
Click save and try
again.
To get your web site IP,
please call 713-779-8444
or email your request to
info@gracecomputer.tv
Case
B.
Another reason is server
block the IP which keep
trying passwords.
The server security
block this IP for
security reason.
Please check your IP by
visiting
www.whatismyip.com
and email this IP to us,
we will release this IP
block for you.
Top
17. How can I find
out IP address
of my DVR system or
computer or web site?
For PC or DVR:
Please check your IP by
visiting
www.whatismyip.com
and email this IP to us,
we will release this IP
block for you.
