manualshive.com logo in svg

D-Link DCS-2132L, Руководство пользователя

Поделиться
Скачать
D-Link DCS-2132L Скачать руководство пользователя страница 51

51

D-Link DCS-2132L User Manual

Section 4: Configuration

Audio and Video

You may configure up to 3 video profiles with different settings for your camera. Hence, you may set up different profiles for your computer and 

mobile display. In addition, you may also configure the two-way audio settings for your camera. After making any changes, click the 

Save Settings 

button to save your changes.

Number of active profiles:

Aspect ratio:

Mode:

Frame size / View window area:

You  can  use  the  drop-down  box  to  set  up  to  2  active 

profiles.

Set the aspect ratio of the video to 4:3 standard or 16:9 

widescreen.

Set  the  video  codec  to  be  used  to  JPEG,  MPEG-4,  or 

H.264.

Frame size determines the total capture resolution, and 

View  window  area  determines  the  Live Video  viewing 

window  size.  If  the  Frame  size  is  larger  than  the  Live 

Video size, you can use the ePTZ controls to look around.

16:9  1280 x 800, 1280 x 720, 800 x 450,  

640 x 360, 480 x 270, 320 x 176,  

176 x 144  

4:3 

1024 x 768, 800 x 600, 640 x 480,  

480 x 360, 320 x 240, 176 x 144

Note

: If your View window area is the same as your Frame 

size, you will not be able to use the ePTZ function. 

Содержание DCS-2132L

Страница 1: ...User Manual HD Wireless N Cube Network Camera Version 1 0 13 06 2012 DCS 2132L ...

Страница 2: ...tion Manual Revisions Revision Date Description 1 0 May 25 2012 DCS 2132L Revision A1 with firmware version 1 00 Trademarks D Link and the D Link logo are trademarks or registered trademarks of D Link Corporation or its subsidiaries in the United States or other countries All other company or product names mentioned herein are trademarks or registered trademarks of their respective companies Copyr...

Страница 3: ...p 25 mydlink 26 Camera Status 27 Live Video 28 Playback 29 Settings 30 Recording Settings 31 Advanced Settings 33 Events 34 Configuration 35 Using the Configuration Interface 35 Live Video 36 Setup 38 Setup Wizard 38 Network Setup 44 Wireless Setup 47 Dynamic DNS 48 Image Setup 49 Audio and Video 51 Preset 53 Motion Detection 55 Time and Date 56 Event Setup 57 SD Card 66 Advanced 67 Digital Input ...

Страница 4: ...4 D Link DCS 2132L User Manual Help 76 DI DO Specifications 77 Technical Specifications 78 Safety Statements 81 ...

Страница 5: ...missing please contact your reseller Note Using a power supply with a different voltage than the one included with your product will cause damage and void the warranty for this product DCS 2132L HD Wireless N Cube Network Camera CAT5 Ethernet cable Power adapter CD ROM with User Manual and software Quick Installation Guide ...

Страница 6: ...he Internet via a web browser The simple installation and intuitive web based interface offer easy integration with your Ethernet Fast Ethernet or 802 11n g wireless network The DCS 2132L also comes with remote monitoring and motion detection features for a complete and cost effective home security solution Computer with Microsoft Windows 7 Vista or XP for CD ROM Setup Wizard Mac OS or Linux PC wi...

Страница 7: ...ration Using a standard Web browser administrators can configure and manage the Network Camera directly from its own Web page via Intranet or Internet This means you can access your DCS 2132L anytime anywhere in the world Broad Range of Applications With today s high speed Internet services the Network Camera can provide the ideal solution for delivering live video images over the Intranet and Int...

Страница 8: ...era 3 Infrared LED Used to illuminate the camera s field of view at night 4 PIR Sensor Passive Infrared sensor for motion detection 5 Camera Lens Records video of the surrounding area 6 Microphone Records audio from the surrounding area 7 ICR Sensor The IR Cut Removable sensor monitors lighting conditions and switches between color and infrared accordingly 8 Speaker Audio output 1 2 3 4 5 6 8 7 ...

Страница 9: ...r 5 seconds on your router to set up a wireless connection automatically 3 Reset Button Press and hold this button for 10 seconds to reset the camera 4 Power Connector Connects to the included DC 5 V power adapter 5 DI DO Connector I O connectors for external devices 6 Adjustment Ring Tighten or loosen the adjustment ring to adjust the camera s position 1 3 4 5 6 2 ...

Страница 10: ...10 D Link DCS 2132L User Manual Section 1 Product Overview Sides 1 Micro SD Card Slot Insert a MicroSD card for Local storage for storing recorded image and video 1 ...

Страница 11: ...2 degree angle it looks over 42 feet 14 meters thick Position your devices so that the signal will travel straight through a wall or ceiling instead of at an angle for better reception 3 Building Materials make a difference A solid metal door or aluminum studs may weaken the wireless signal Try to position your access points wireless routers and other networking devices where the signal passes thr...

Страница 12: ...ydlink enabled cloud router and Zero Configuration will automatically configure your DCS 2132L and automatically add the camera to your mydlink account You can now remotely access your camera from the mydlink com website to manage and monitor your DCS 2132L Connect the Ethernet Cable If using an Ethernet connection Connect the included Ethernet cable to the Ethernet port located on the back of the...

Страница 13: ...se refer to your router s User Manual The DCS 2132L will automatically create a wireless connection to your router While connecting the status LED will flash When the connection process is complete the status LED will turn solid Note If your router does not supportWPS you can still use the wired connection method on the previous page After Zero Configuration setup is complete your router s wireles...

Страница 14: ...ally configured details Make a note of the details and click OK to add the camera to your account Check Your mydlink Account Fromanycomputer openawebbrowser gotohttp www mydlink comandlog into your account Once mydlink detects your camera a New Device Found noticewillappearinthebottom leftcorner Clickonthedevicenametocontinue ...

Страница 15: ...ect your camera to your router wirelessly you can simply disconnecttheEthernetcableandmovethecameratoitsintendedlocation your router s wireless settings have been automatically transferred to the camera and no further configuration is required Yourcameraisnowsetup andyoucanskipto mydlink onpage26tolearnmore about the mydlink features of this camera or to Configuration on page 35 for advanced confi...

Страница 16: ...r s optical drive to start the autorun program The CD ROM will open the Camera Installation Wizard Simply click SetupYour Camera to go through the Installation Wizard which will guide you through the installation process from connecting your hardware to configuring your camera Camera Installation Wizard ...

Страница 17: ...he included Ethernet cable to the network cable connector located on the panel at the rear of the DCS 2132L and attach it to the network Click Next to continue Select your preferred language for the installation from the drop down menu and click on Start to continue ...

Страница 18: ... Connect the other end of the same Ethernet cable to a router Click Next to continue Attach the external power supply to the power connector located on the rear panel of the DCS 2132L and connect it to your wall outlet or power strip Click Next to continue ...

Страница 19: ...t successfully connects to your network Click Next to proceed IftheLEDcontinuestoblink checkyourconnectionsorclickonthe Whatshould I do if the LED stays red link for more information Selectyourcamerafromthelist thenclickNext Ifyouhavemultiplecameras you can identify them by the MAC ID printed on the label on the back of your camera ...

Страница 20: ...ink account press and hold the reset button on the rear panel for at least 6 seconds and click Restart to restart the wizard After you have selected your camera from the list you will be asked to create and confirm a password for it The password is case sensitive and must contain at least 2 letters Click Next to continue ...

Страница 21: ... by using WPS or by selecting a wireless network select the appropriate option then follow the steps displayed Otherwise click Next to continue Complete the mydlink account registration form with your details making sure to select theI accept mydlink terms and conditions box and click theNext button ...

Страница 22: ...2132L User Manual Section 2 Installation If you already have a mydlink account enter your login details and click Next to proceed Confirm your mydlink account details and give the camera a unique name and click Done ...

Страница 23: ... and click Done Your DCS 2132L camera is now set up Log on to your mydlink account and explore the exciting benefits available to you Yourcameraisnowsetup andyoucanskipto mydlink onpage26tolearnmore about the mydlink features of this camera or to Configuration on page 35 for advanced configuration of your camera ...

Страница 24: ...work Attach the External Power Supply Attach the external power supply to the DC Power receptor located on the rear panel of the DCS 2132L and connect it to your wall outlet or power strip Manual Hardware Installation If you wish to set up your camera without using the Camera Setup Wizard please follow these steps Note In order to use the mydlink features of this product you will need to go throug...

Страница 25: ...ace and click on an on screen button to activate the WPS feature If you are not sure where the WPS button is on your router please refer to your router s User Manual The DCS 2132L will automatically create a wireless connection to your router While connecting the status LED will flash When the connection process is complete the status LED will turn solid WPS Push Button Setup WPS Button If your ro...

Страница 26: ...ter registering your DCS 2132L camera with a mydlink account in the Camera InstallationWizard You will be able to remotely access your camera from the www mydlink com website After signing in to your mydlink account you will see a screen similar to the following ...

Страница 27: ...l cannot access your camera reset your camera and run the Camera Installation Wizard again from the CD ROM included in your package Here you can see the online status of each of your cameras Your online status may be one of the following A red X indicates that your camera is offline and currently cannot be accessed remotely A green checkmark indicates that your camera is online and ready to use A ...

Страница 28: ...e Live Video tab will be selected by default If the camera is available a Live Video feed will be displayed Video will be shown at VGA resolution 640x480 if viewing your camera from a PC on the same local network or at QVGA resolution 320x240 if viewing your camera from a PC on a remote network ...

Страница 29: ... mydlink Playback Select the date of the footage you wish to preview from the drop down menu then choose from the recordings available for playback The Playback tab allows you to review pre recorded footage captured to an inserted microSD card ...

Страница 30: ...s the unique mydlink number for your device This shows the model name of the camera The shows the Media Access Control MAC address of the camera The date the camera was registered to the mydlink service Email notification of events can be switched on or off Camera Name mydlink No Model name MAC Camera Activated on Event Notification Settings Each of the recording settings will open a further menu ...

Страница 31: ...g when motion is detected Clear Detection Area This will remove all detection areas Refresh Snapshot This will refresh the current snapshot of the monitored area Increase Decrease Sensitivity Increase the motion detection sensitivity Toggles notification by email on or off In the event that the microSD card can not store further recordings the user can choose to record over previous recordings or ...

Страница 32: ...tification This option enables either continuous or recurring scheduled recording Record Video Clips by Schedule In the event that the microSD card can not store further recordings the user can choose to record over previous recordings or to be notified and cease recording Video Clips Recording Mode ...

Страница 33: ...anual Section 3 mydlink Checking this box will show the password Clicking on the Advanced Setting button will open a secondary window allowing full configuration of the DCS 2132L Show password Advanced Setting Advanced Settings ...

Страница 34: ...to enable the automatic recording when motion is detected Mark Page as Read Clicking this button will mark the current page of event notifications as read Mark all as Read Clicking this button will mark all event notifications as read Record video clips when motion is detected ...

Страница 35: ...b configuration utility is designed to allow you to easily access and configure your DCS 2132L At the end of the wizard click GoTo Camera or enter the IP address of your camera into a web browser such as Mozilla Firefox To log in use the User name admin and the password you created in the Installation Wizard If you did not create a password the default password is blank After entering your passwor...

Страница 36: ...video motion feature for your camera must be enabled Recording Indicator When a recording is in progress this indicator will change color Control Pad This control pad can be used to electronically pan tilt and zoom ePTZ within the camera s predefined view area if one has been defined Auto Pan Starts the automatic panning function The ROI will pan from back and forth within the FOV Stop Stops autom...

Страница 37: ...e 2 Video Profile 3 Full screen mode Taking a Snapshot Record a Video Clip Set a Storage Folder Listen Stop Audio In from microphone Start Stop Audio Out to speaker Start Stop Digital Output This window indicates the total field of view FOV of the camera The red box indicates the visible region of interest ROI You may select the interface language using this menu Global View Language ...

Страница 38: ... may click Manual Internet Connection Setup to manually configure your Network Camera and skip to Network Setup on page 44 To quickly configure your Network Camera s motion detection settings click Motion Detection Setup Wizard If you want to enter your settings without running the wizard click Manual Motion Detection Setup and skip to Motion Detection on page 55 ...

Страница 39: ... Connection Setup Wizard This wizard will guide you through a step by step process to configure your new D Link Camera and connect the camera to the internet Click Next to continue Note Select DHCP if you are unsure of which settings to choose Click Next to continue ...

Страница 40: ...Enter the correct configuration information and click Next to continue If you are using PPPoE select Enable PPPoE and enter your user name and password otherwise click Next to continue If you have a Dynamic DNS account and would like the camera to update your IP address automatically Select Enable DDNS and enter your host information Click Next to continue Enter a name for your camera and click Ne...

Страница 41: ...hat all events will be triggered as scheduled Click Next to continue If you have selected DHCP you will see a summary of your settings including the camera s IP address Please write down all of this information as you will need it in order to access your camera Click Apply to save your settings ...

Страница 42: ...and adjust the camera s ability to detect movement You may specify whether the camera should capture a snapshot or a video clip when motion is detected Please see the Motion Detection section on Motion Detection on page 55for information about how to configure motion detection Step 2 This step allows you to enable motion detection based on a customized schedule Specify the day and hours You may al...

Страница 43: ... choose not to receive notifications or to receive notifications via e mail or FTP Please enter the relevant information for your e mail or FTP account Click Next to continue Step 4 You have completed the Motion Detection Wizard Please verify your settings and click Apply to save them Please wait a few moments while the camera saves your settings and restarts ...

Страница 44: ...camera to obtain an IP address automatically If you choose DHCP you do not need to fill out the IP address settings You may obtain a static or fixed IP address and other network information from your network administrator for your camera A static IP address may simplify access to your camera in the future Enter the fixed IP address in this field This number is used to determine if the destination ...

Страница 45: ... Enter the username and password for your PPPoE account Re enter your password in the Confirm Password field You may obtain this information from your ISP The default port number is 80 The default name is video mjpg where is the number of the stream You may use a PC with a secure browser to connect to the HTTPS port of the camera The default port number is 443 The port number that you use for RTSP...

Страница 46: ... If the Network Camera is connected to a router that itself implements QoS the router s settings will override the QoS settings of the camera Enable the IPV6 setting to use the IPV6 protocol Enabling the option allows you to manually set up the address specify an optional IP address specify an optional router and an optional primary DNS The DCS 2132L allows you to multicast each of the available s...

Страница 47: ...he wireless access point you wish to use Use the drop down box to select the mode of the wireless network you wish to connect to Infrastructure is normally used to connect to an access point or router Ad Hoc is usually used to connect directly to another computer If you are using Ad Hoc mode select the channel of the wireless network you wish to connect to or select Auto Select the authentication ...

Страница 48: ...o save your changes Enable DDNS Server Address Host Name User Name Password Timeout Status Select this checkbox to enable the DDNS function Select your Dynamic DNS provider from the pull down menu or enter the server address manually Enter the host name of the DDNS server Enter the user name or e mail used to connect to your DDNS account Enter the password used to connect to your DDNS server accou...

Страница 49: ...ver the camera image to draw a mask area Right clicking on the camera image brings up the following menu options Disable All Disables all mask areas Enable All Enables all mask areas Reset All Clears all mask areas If the video flickers try enabling this setting This will mirror the image horizontally This will flip the image vertically When turning Flip on you may want to consider turning Mirror ...

Страница 50: ...create 3 different custom exposure modes The Max Gain setting will allow you to control the maximum amount of gain to apply to brighten the picture This setting controls the amount of noise reduction that will be applied to the picture Adjust this setting to compensate for backlit subjects Adjust this setting to alter the color intensity strength This setting controls the amount of coloration from...

Страница 51: ...area You can use the drop down box to set up to 2 active profiles Set the aspect ratio of the video to 4 3 standard or 16 9 widescreen Set the video codec to be used to JPEG MPEG 4 or H 264 Frame size determines the total capture resolution and View window area determines the Live Video viewing window size If the Frame size is larger than the Live Video size you can use the ePTZ controls to look a...

Страница 52: ...ization and video quality If fixed bandwidth utilization is desired regardless of the video quality choose Constant bit rate and select the desired bandwidth The bps will affect the bit rate of the video recorded by the camera Higher bit rates result in higher video quality Select the image quality level for the camera to try to maintain High quality levels will result in increased bit rates Selec...

Страница 53: ...ce This selects which video profile to use You may select a value between 0 and 64 0 is the slowest and 64 is the fastest Use these buttons to move to a specific part of the viewing area which you can then set as a preset Click the Home button to return to the center of the viewing area Enter the name of the preset you want to create then click the Add button to make a new preset If an existing pr...

Страница 54: ...he preset name will appear in the list followed by the dwell time to view that preset for You can rearrange your presets in the sequence by selecting a preset in the sequence then clicking the arrow buttons to move it higher or lower in the current sequence Clicking the trash can button will remove the currently selected preset from the sequence If you want to change the dwell time for a preset se...

Страница 55: ...l images that would indicate motion Please enter a value between 0 and 100 Specifies the amount of motion in the window being monitored that is required to initiate an alert If this is set to 100 motion is detected within the whole window will trigger a snapshot Drawthemotiondetectionareabydraggingyourmouse in the window indicated by the red square To erase a motion detection area simply click on ...

Страница 56: ...tings Select your time zone from the drop down menu Select this to enable Daylight Saving Time Select this option to allow your camera to configure the Daylight Saving settings automatically SelectingthisoptionallowsyoutoconfiguretheDaylight Saving date and time manually Sets the amount of time to be added or removed when Daylight Saving is enabled Enable this feature to obtain time automatically ...

Страница 57: ...ut devices When an event is triggered a specified action will be performed You can configure the Network Camera to send snapshots or videos to your e mail address or FTP site ex Motion detection Periodically Digital input System reboot Event Condition ex Snapshot Video Clips ex Email FTP Media what to send Server where to send Action To start plotting an event it is suggested to configure server a...

Страница 58: ...ions Event Server Media Recording 1 To add a new item event server or media click Add A screen will appear and allow you to update the fields accordingly 2 To delete the selected item from the pull down menu of event server or media click Delete 3 Click on the item name to pop up a window for modifying ...

Страница 59: ...guration for the target e mail server account Enter the configuration for the target FTP server account Specify a network storage device Only one network storage device is supported Use the camera s onboard SD card storage You can configure up to 5 servers to save snapshots and or video to After making any changes click the Save Settings button to save your changes ...

Страница 60: ... Audio andVideo on page 51 for more information on video profiles Set the number of pre event images to take Pre event imagesareimagestakenbeforethemaineventsnapshot is taken Set the number of post event images to take Post event images are images taken after the main event snapshot is taken You can set up to 7 post event images to be taken The prefix name will be added on the file name Check it t...

Страница 61: ...ore information on video profiles This sets how many seconds to record before the main event video clip starts You can record up to 4 seconds of pre event video Set the maximum length of video to record for your video clips Set the maximum file size to record for your video clips This is the prefix that will be added to the filename of saved video clips Select this option to set the media type to ...

Страница 62: ... The event with higher priority will be executed first Select the delay time before checking the next event It is being used for both events of motion detection and digital input trigger Specify the input type that triggers the event Motion is detected during live video monitoring Select the windows that need to be monitored The event is triggered in specified intervals The trigger interval unit i...

Страница 63: ... 4 Configuration Time Trigger D O Server Select Always or enter the time interval Select to trigger the digital output for a specific number of seconds when an event occurs Specify the location where the event information should be saved to ...

Страница 64: ... volume between 1MB and 2TB for recording space The recording data will replace the oldest record when the total recording size exceeds this value For example if each recording file is 6MB and the total cyclical recording size is 600MB then the camera will record 100 files in the specified location folder and then will delete the oldest file and create new file for cyclical recording Please note t...

Страница 65: ...ing Time of each file for recording File Name Prefix If this is selected files will be separated based on the file size you specify If this is selected files will be separated based on the maximum length you specify The prefix name will be added on the file name of the recording file s ...

Страница 66: ...cture video folders If the picture files are stored on the SD card click on the picture folder and choose the picture file you would like to view If video files are stored on the SD card click on the video folder and choose the video file you would like to view Reloads the file and folder information from the SD card Here you may browse and manage the recorded files which are stored on the SD card...

Страница 67: ...ken and e mailed After making any changes click the Save Settings button to save your changes Digital Input Output Select D I or D O Mode LED The camera will send a signal when an event is triggered depending upon the type of device connected to the DI circuit N C stands for Normally Closed This means that the normal state of the circuit is closed Therefore events are triggered when the device sta...

Страница 68: ...s to Night mode when needed Day mode enables the IR Cut Filter Night mode disables the IR Cut Filter SetuptheDay Nightmodeusingaschedule Thecamera will enter Day mode at the starting time and return to Night mode at the ending time The camera can enable or disable the IR infrared light according to your preferences This setting provides additional controls depending on your specific application Th...

Страница 69: ...nection Create Certificate Method Status Note Enable the HTTPS service Choose the way the certificate should be created Three options are available Create a self signed certificate automatically Create a self signed certificate manually Create a certificate request and install Displays the status of the certificate The certificate cannot be removed while the HTTPS is still enabled To remove the ce...

Страница 70: ...he changes made Note A total of seven lists can be configured for both columns TheendingIPAddressofthedevices suchasacomputer that have permission to access the video of the camera Remove the customized setting from the Allow List The list of IP addresses that have no access rights to the camera Remove the customized setting from the Delete List For example When the range of the Allowed List is se...

Страница 71: ...the administrator s account Add new user account The user name for the new account The password for the new account All the existing user accounts will be displayed here You may delete accounts included in the list but you may want to reserve at least one as a guest account Create a unique name for your camera that will be added to the file name prefix when creating a snapshot or a video clip Sele...

Страница 72: ...ocal Hard Drive Restore to Factory Default Reboot Device You may save your current camera configuration as a file on your computer Locate a pre saved configuration by clicking Browse and then restore the pre defined settings to your camera by clicking Load Configuration You may reset your camera and restore the factory settings by clicking Restore Factory Defaults This will restart your camera ...

Страница 73: ...wnload and save the latest firmware version from the D Link Support Page to your local hard drive Locate the file on your local hard drive by clicking the Browse button Select the file and click the Upload button to start upgrading the firmware Current Firmware Version Current Product Name File Path Upload Displays the detected firmware version Displays the camera model name Locate the file upgrad...

Страница 74: ...74 D Link DCS 2132L User Manual Section 4 Configuration Status This page displays detailed information about your device and network connection Device Info ...

Страница 75: ...2132L User Manual Section 4 Configuration This page displays the log information of your camera You may download the information by clicking Download You may also click Clear to delete the saved log information Logs ...

Страница 76: ...76 D Link DCS 2132L User Manual Section 4 Configuration This page provides helpful information regarding camera operation Help ...

Страница 77: ...external relay a diode must be connected in parallel with the load for protection against voltage transients Max loading is 100 mA 2 Digital In DI A switch from DI to DC 5 V activated by setting NO or NC 3 DC5V OUTPUT DC 5 V Output Max 100 mA 4 GND GND Internal 5V Power External 3 12V Power DO DI 5V DND N C N O 100 mA ALARM Reed switch Diode DC Power 5V R DO DI 5V DND N C N O ALARM Reed switch Dio...

Страница 78: ...ess saturation contrast and sharpness Video Compression Simultaneous H 264 MPEG 4 MJPEG format compression H 264 MPEG 4 multicast streaming JPEG for still images Video Resolution 16 9 1280 x 800 1280 x 720 800 x 450 640 x 360 480 x 270 320 x 176 176 x 144 4 3 1024 x 768 800 x 600 640 x 480 480 x 360 320 x 240 176 x 144 Audio Support G 726 G 711 External Device Interface 10 100 BASE TX Fast Etherne...

Страница 79: ...upport Windows 7 Vista XP system Pocket PC or mobile phone mydlink mobile app for iOS and Android mobile devices D ViewCam System Requirements Operating System Microsoft Windows 7 Vista XP Web Browser Internet Explorer 7 or higher Protocol Standard TCP IP D ViewCam Software Functions Remote management control of up to 32 cameras Viewing of up to 32 cameras on one screen Supports all management fun...

Страница 80: ...80 D Link DCS 2132L User Manual Appendix B Technical Specifications Dimensions ...

Страница 81: ...stallation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a cir...

Страница 82: ...ation applicable to products purchased outside the United States please contact the corresponding local D Link office Industry Canada Notice This device complies with RSS 210 of the Industry Canada Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause ...

Отзывы:

Нет отзывов

Бренды по названию

Популярные бренды

Загрузить еще бренды