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81
DCS-950G User’s Manual
D-Link Systems, Inc.
Frequently Asked Questions
Frequently Asked Questions
Internet Camera Features
1 What is an Internet Camera?
The Internet Camera is a standalone system connecting directly to an Ethernet or
Fast Ethernet network and supported by the wireless transmission based on the IEEE
802.11g standard. It is different from the conventional PC Camera, the Internet Camera
is an all-in-one system with built-in CPU and web-based solutions providing a low cost
solution that can transmit high quality video images for monitoring. The Internet Camera
can be managed remotely, accessed and controlled from any PC/Notebook over the
Intranet or Internet via a Web browser.
2 What is the maximum number of users that can be
allowed to access DCS-950G simultaneously?
The maximum number of users that can log onto the Internet Camera at the same time
is 8. Please keep in mind the overall performance of the transmission speed will slow
down when multiple users are logged on.
3 What algorithm is used to compress the digital
image?
The Internet Camera utilizes MPEG-4 Simple Profile image compression technology to
provide high quality images. MPEG-4 Simple Profile is a standard for image compression
and can be applied to various web browser and application software without the need
to install extra software.
4 Can I capture still images from the Internet
Camera?
Yes you are able to capture still images with the snapshot function from the IPView
Lite application supplied with the Internet Camera CD-ROM. You may also record
snapshots using the snapshot feature on the Home page. When viewing this page,
press the
“snapshot”
button on your Web browser to capture the image and save to
your hard drive.
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82
DCS-950G User’s Manual
D-Link Systems, Inc.
Frequently Asked Questions
5 Can the Internet Camera be used outdoors?
The Internet Camera is not weatherproof. It needs to be equipped with a weatherproof
case to be used outdoors and it is not recommended.
6 What network cabling is required for the Internet
Camera?
The Internet Camera uses Category 5 UTP Twisted-pair cable allowing 10 Base-T and
100 Base-T networking.
7 Can the Internet Camera be setup as a PC-cam on
the computer?
No, the Internet Camera is used only on Ethernet and Fast Ethernet network or
supported by wireless transmission. The D-Link DSB-C110, DSB-C310 can be used
as a PC Camera (Webcam).
8 Can the Internet Camera be connected on the network
if it consists of only private IP Addresses?
Yes, the Internet Camera can be connected to a LAN with private IP Addresses.
9 Can the Internet Camera be installed
if a firewall
exists on the network?
If a firewall exists on the network, port 80 is open for ordinary data communication. You
will need to do port forwarding by opening a port to the camera. Please refer to your
firewall’s product manual for detailed instructions.
10 Why can’t I
access the Internet Camera from a Web
browser.
The possible cause might be the IP Address for the Internet Camera is already being
used by another device. To correct the possible problem, you need to first disconnect
the Internet Camera from the network. Then run the PING utility (follow the instructions
in the section titled “PING Your IP Address:). If there is a reply, it indicates that there is
another device on the network with the same IP address. You will need to run the Install
Wizard again and change the IP address of the camera.
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83
DCS-950G User’s Manual
D-Link Systems, Inc.
Frequently Asked Questions
Other possible problems might be due to the network cable. Try replacing your network
cable. Test the network interface of the product by connecting a local computer directly
to the unit, utilizing a standard Crossover Cable, and run the PING utility. If the problem
is not solved, the Internet Camera might be faulty.
Internet Camera Installation
11 Why does the Power LED not light up constantly?
The power supply used might be at fault. Confirm that you are using the provided power
supply, which is DC 5V, for the Internet Camera and verify that the power supply is well
connected.
12 Why does the LAN LED not light up properly?
There might be a problem with the network cable. To confirm that the cables are working,
PING the address of a known device on the network. If the cabling is OK and your
network is reachable, you should receive a reply similar to the following (…bytes = 32
time = 2 ms).
Another possible problem may be that the network device utilized by the Internet Camera
is not functioning properly, such as hubs or switches. Confirm the power for the devices
are well connected and functioning properly.
13 Why does the Internet Camera work locally but not
externally?
This might be caused by the firewall protection. Check the Internet firewall with your
system administrator. The firewall may need to have some settings changed in order
for the Internet Camera to be accessible outside your local LAN. Refer to page 48 for
more information about installing your camera behind a router.
Make sure that the Internet Camera isn’t conflicting with any web server you may have
running on your network.
The default router setting might be a possible reason. Check that the configuration of
the router settings allow the Internet Camera to be accessed outside your local LAN.
14 Why does a series of broad vertical white lines
appear through out the image?
It could be that the CMOS sensor (a square panel situated behind the lens that measures
the light signals and changes it into a digital format so your computer can present it into
an image that you are familiar with) has become overloaded when it has been exposed
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84
DCS-950G User’s Manual
D-Link Systems, Inc.
Frequently Asked Questions
to bright lights such as direct exposure to sunlight or halogen lights. Reposition the
Internet Camera into a more shaded area immediately as prolonged exposure to bright
lights will damage the CMOS sensor.
15 The focus on the Internet Camera is bad, how can
I correct it?
Adjust the Internet Camera focus manually as described in the section titled “Adjusting
the Camera Focus” on
page 89.
16 Noisy images occur. How can I solve the
problem?
The video images might be noisy if the Internet Camera is used in a very low light
environment. To solve this issue you need more lighting, or click on the
Nightshot
button on the Home page.
17 The images are poor quality, how can I improve the
image quality?
Make sure that your computers display properties are set to at least 6-bit color. Using
16 or 256 colors on your computer will produce dithering artifacts in the image, making
the image look as if it is of poor quality.
The configuration on the Internet Camera image display is incorrect. Through the Web
Configuration Video section of the web management you need to adjust the image
related parameters for improved images such as: brightness, contrast, hue and light
frequency. Please refer to the Web Configuration section for detailed information.
18 Why are no images available through the Web
browser?
The ActiveX might be disabled. If you are viewing the images from Internet Explorer
make sure ActiveX has been enabled in the Internet Options menu. You may also
need to change the security settings on your browser to allow the ActiveX plug-in to
be installed.
If you are using Internet Explorer with a version number of lower than 5, then you
will need to upgrade your Web browser software in order to view the streaming video
transmitted by the Internet Camera.
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85
DCS-950G User’s Manual
D-Link Systems, Inc.
How to Ping Your IP Address
How to Ping Your IP Address
The PING (Packet Internet Groper) command can determine whether a specific IP
Address is accessible by sending a packet to the specific address and waiting for a reply.
It is a very useful tool to confirm if the IP Address conflicts with the Internet Camera
over the network.
Follow the step-by-step procedure below to utilize the PING command.
Start a DOS window Start>Program>Accessories>Command Prompt
Type ping x.x.x.x, where x.x.x.x is the IP Address of the Internet Camera.
A successful connection to the camera will be indicated by 4 reply statements
(below).

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