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D-Link DCS-34±0 User Manual

Section 3 - Configuration

To fix the bandwidth utilization regardless of the video quality, choose

Fix bit rate

and select

the desired

bandwidth. The video quality may be reduced in order to send maximum frames with limited bandwidth,

especially when images change drastically. For higher video detail regardless of the bandwidth selection,

select

Fix quality

and select a video quality level. This setting will utilize more bandwidth to send the

maximum frames when images change drastically.

Vertically rotate the video.

Horizontally rotate the video. Check both

flip

and

mirror

if the DCS-3420 is to be installed upside down.

If the camera works in a multi-user environment, the user can enable this option to conserve bandwidth by

reducing video capture rate.

Select this option to display the current date and time on the video image. All the snapshots and video data

will have the date and time locate on the corner of the picture.

Video quality

control:

Flip:

Mirror:

Improve efficiency

in the multi-user

environment:

Timestamp on

video:

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D-Link DCS-34±0 User Manual

Section 3 - Configuration

“Best performance” means the image refresh rate should be the fastest possible and the video quality should

be the best possible at the lowest network bandwidth possible. Three factors, Maximum frame rate, Fix bit rate,

and Fix quality in the Video Configuration page, are related to performance.

Recording settings for real-time motion images

To achieve a real-time visual effect, the network bandwidth should be large enough to transmit 20 image frames

per second (fps) or more. If you are on a broadband network over 1 Mbps, you can set Fix bit Rate to 1000Kbps

or 1200Kbps, or set Fix quality to achieve the maximum frames. The maximum frame rate is 25 in 50Hz system

and 30 in 60Hz system. If your network bandwidth is more than 384Kbps, you can adjust Fix bit rate according

to your bandwidth and set the maximum frame rate of 25 to 30.

If the images vary dramatically in your environment, you may slow down the maximum frame rate to 20 to decrease

the transmitted data for better video quality. Since the human eye could not easily differentiate between 20 and 25

or 30 frames per second, the slower frame rate will not be noticed. If your network bandwidth is below 384 Kbps,

you should adjust the bit rate according to your bandwidth and experiment to allow for the best frame rate that can

be achieved. The faster frame rate in a slow network will blur the images. You may also try to choose 320x240

in size option for better images or 640x480 for larger image size. Because the network has burst constraints and

everyone’s environment is not the same, any poor connection will impair normal performance.

Recording settings for clear identification for each image

To have the best video quality, you should set Fix quality to detailed or excellent and tune the Maximum frame

rate to suit

your network bandwidth. If you get some broken pictures in a slow network, you can set TCP protocol

in Connection type for a more accurate transmission but the received images may have a lag. Note that any slow

connection with multiple users will impair performance.

Recording settings to compromise between real-time and clear images

If you have a broadband network, set Fix quality to Good image quality, or higher, instead of setting the Bit rate.

Otherwise, fix the bit rate according to your actual network speed and set the frame rate to 30. If the image quality

is low, select a lower frame rate above 15. If the image quality is still not improved, select a lower bit rate.

Recommendations for Setting Video for the Best Performance:

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D-Link DCS-34±0 User Manual

Section 3 - Configuration

Audio

There are five options to select. For all

the modes, only one client can talk to the

server at the same time.

The User can talk to and listen from the

server simnltaneously.

The User can talk to the server or listen

from the server, but not at the same

time.

The User can only talk to the server.

The User can only listen from the server.

The audio is disabled in both directions.

If the Network Camera works in a low

bandwidth network environment, the User

can check this option to improve audio quality by sacrificing some real-time synchronization.

There are three bit rates for audio. 32Kbps and 24Kbps are suitable for both music and speech and 8Kbps

is suitable for speech only.

Transmission

mode:

Full-duplex:

Half-duplex:

Simplex/Talk only:

Simplex/Listen

only:

Disable:

Improve audio

quality in low

bandwidth

environment:

Bit rate:

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D-Link DCS-34±0 User Manual

Section 3 - Configuration

Image Setting

From this screen you can fine tune the video image.

Image Brightness, Contrast, Saturation and Hue are all adjustable in the same manner. For each video

compensation, you can set from among eleven levels ranged from -5 to +5.

The default setting is zero for each

adjustment.

You may use the

Preview

and

Restore

button to fine-tune the image. Press the

Save

button to store the image

settings, or press the

Restore

button to recall the original settings. If settings are changed without saving, they will

be effective until the next system start-up.

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D-Link DCS-34±0 User Manual

Section 3 - Configuration

Check this option to turn on the motion

detection.

The name of the motion detection

window.

Sensitivity meter allows the user to set

how sensitive for the motion triggering.

The sensitivity is based on pixel change

of the video image.

Percentage meter allows use to specify

how many percentage of the motion

screen is changed to trigger the motion

detection. Lower percentage gives higher

sensitivity of the motion detection.

Adds new windows that monitor specific

area of the image window. Up to 3 motion

detection windows can be added.

Saves the new windows settings.

Enable motion

detection:

Motion Detection

Window name:

Sensitivity:

Percentage:

New:

Save:

A green bar means the image variation is under the monitoring level, and no motion detection alert is triggered. A red

bar means the image variation is over the monitoring level and a motion detected alert is triggered. When

the bar goes red, the window that the motion is detected in will also be outlined in red (note: remember that

you can have up to 3 windows selected for motion detection). You can return to the DCS-3420 Home Page

and the monitored window will not be visible, but the red frame will show on the home page when motion is

detected.