D-Link DCS-5211L User Manual Download Page 77

Page: 77 / 78

D-Link DCS-5211L/DCS-5222L User Manual

Appendix A - Technical Specifications

Technical Specifications

Networking Protocol

•

IPv4, ARP, TCP, UDP, ICMP

•

DHCP Client

•

NTP Client(D-Link)

•

DNS Client

•

DDNS Client(D-Link)

•

SMTP Client

•

FTP Client

•

HTTP Server

•

UPNP Port Forwarding

• LLTD

•

PPPoE

•

RTP (Real Time Protocol)

•

RTCP (Real Time Control Protocol)

•

RTSP (Real Time Streaming Protocol)

•

3GPP(Video only)

LAN

• 10/100BASE-TX port

• IEEE 802.3 compliant

• IEEE 802.3u compliant

• Supports Full-Duplex operation

• MDI/MDIX auto-negotiation

• 802.3x Flow Control support for Full-Duplex mode

Wireless Connectivity (DCS-5222L only)

• 802.11g/n Wireless with WEP/WPA/WPA2 Security

• WPS Support

Sensor

• 1/4 inch WXGA (1280x800)

Lens

• Focal length: 4.57mm, F1.9

Microphone

• Signal/noise ratio: 40dB +/- 3dB, Omni-directional

Reset Button

• Reset to factory default

Video Codec

• H.264/MPEG4/MJPEG triple format

compression simultaneously

• JPEG for still image

Video Features

• Adjustable image size and quality

• Time stamp and text overlay

• Flip and Mirror

• Fully configurable motion detection window

Maximum Resolution

• 1280x720

Audio Codec

• PCM/ADPCM

Light Sensitivity

• 1 [email protected]

Summary of Contents for DCS-5211L

Page 1: ......

Page 2: ...anual Revisions 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 Copyright 2011 by D Link Corporation All rights reserved This publication may not be reproduced in who...

Page 3: ...al 11 Connect the Ethernet Cable 12 Connect the Power Adapter 12 Setting up a Wireless Connection with WPS 13 Wireless Installation Considerations 14 Camera Installation Wizard 15 WPS Push Button Setup 16 Mydlink Portal 17 Camera Status 18 Live Video 19 Camera Info Playback 20 Configuration 21 Using the Configuration Menu 21 Live Video 22 Setup 24 Setup Wizard 24 Internet Connection Setup Wizard 2...

Page 4: ...us 48 Device Info 48 Log 49 Help 50 Wireless Security 51 What is WEP 51 What is WPA 52 Configuring with a Router 53 Troubleshooting 59 Wireless Basics 63 Wireless Modes 67 Networking Basics 68 Technical Specifications Remote Control Unit 70 Technical Specifications I O Terminal Application 72 Technical Specifications 73 ...

Page 5: ...CAT5 Ethernet Cable Quick Installation Guide CD ROM Camera Base and Mounting kit Package Contents Note Using a power supply with a different voltage rating than the one included with the DCS 5222L DCS 5221L will cause damage and void the warranty for this product If any of the above items are missing from your package please contact your retailer ...

Page 6: ...ws Vista 32 64bit MAC OS X 10 5 or above Web based Configuration Utility Requirements Computer with the following Windows based operating system An installed Ethernet adapter Browser Requirements Internet Explorer 7 or higher Firefox 6 5 or higher Safari 4 or higher Chrome 8 or higher Windows Users Make sure you have the latest version of Java installed Visit www java com to download the latest ve...

Page 7: ... surveillance DCS 5211L DCS 5222L can be accessed remotely and controlled from any PC Notebook over your local network or across the Internet via a web browser The DCS 5211L included support for Power over Ethernet PoE so the camera can be placed in areas where on power outlet is nearby The DCS 5222L features 802 11n wireless allowing the camera to be placed anywhere within range of your wireless ...

Page 8: ...ess from a Web browser for live image viewing and management of the network cameras anytime from anywhere in the world The network cameras have a wide range of applications including industrial and public monitoring of homes offices banks hospitals child care centers and amusement parks 802 11n Wireless or Ethernet Fast Ethernet Support The 5222L offers wireless 802 11n and Ethernet Fast Ethernet ...

Page 9: ...5211L DCS 5222L User Manual Section 1 Product Overview Hardware Overview DCS 5211L Front Light Sensor Passive Infrared Sensor PIR for motion detection Remote Control Receiver PIR Motion Sensor Microphone Camera Lens ...

Page 10: ...ack Connects to the power adapter Ethernet port Connects to a PC or network through an Ethernet connection I O Connector Connect an I O cable to the DCS 5211L Audio Out Connect headphones speakers to provide audio out Micro SD Insert Micro SD card here Reset Button Press and hold to reset to factory standard ...

Page 11: ... 5222L User Manual Section 1 Product Overview Hardware Overview DCS 5222L Front Passive Infrared Sensor PIR for motion detection Light Sensor Remote Control Receiver Wireless Antenna PIR Motion Sensor Microphone Camera Lens ...

Page 12: ...o the power adapter Ethernet port Connects to a PC or network through an Ethernet connection Wireless Antenna WPS Button I O Connector Connect an I O cable to the DCS 5222L Audio Out Connect headphones speakers to provide audio out Micro SD Insert Micro SD card here Reset Button Press and hold to reset to factory standard ...

Page 13: ...ra in the mount and swivel until secured B Using the provided screws screw the mount to the wall or ceiling with the correct tools where the device is to be placed The device can be mounted on a wall or a partition To install A select the position that you want the camera to sit on the ceiling or floor The plate should have the three ball catches facing downwards ...

Page 14: ...10 D Link DCS 5211L DCS 5222L User Manual Section 2 Installation Inserting a Micro SD Card Insert your Micro SD card into the Micro SD card slot on the DCS 5211L DCS 5222L ...

Page 15: ...nector is located at the rear panel and provides an interface for photo coupled switch output and photo coupled input An example of what can be done with a digital input and digital output is the connecting of a motion sensor to the port signalling the camera to take a snapshot and trigger an alarm connected to the port ...

Page 16: ...n your router or broadband modem Attach the power adapter to the power jack located on the back of the DCS 5211L DCS 5222L and connect the power adapter to a power outlet After connecting the power adapter you should see the status LED on the front of the camera become red The status LED will light red when it receives power will light green after the camera connects to the network and will flash ...

Page 17: ... camera s web interface After plugging the power adapter to your camera and the front status LED lights up hold down the WPS button next to the Micro SD card slot for 3 seconds Now press the WPS button on your router or access point within 1 minute to activate WPS and allow your devices to automatically configure a wireless connections Note On some network routers access points WPS may need to be ...

Page 18: ... a 45 degree angle appears to be almost 3 feet 1 meter thick At a 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 wireles...

Page 19: ...omputer s optical drive to start the autorun program The autorun program will open the Camera Installation Wizard Simply click Start 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 ...

Page 20: ...ide of your router On some routers you may need to log in to the web interface 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 5222L will automatically create a wireless connection to your router While connecting the green LED will flash and your camera will reboot WPS Push Button ...

Page 21: ...nk Portal After registering your DCS 5211L 5222L camera with a mydlink account in the Camera Setup Wizard 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 ...

Page 22: ...to make sure that the Internet connection to your camera is working properly Try restarting your Internet router Check your camera s cable connections and make sure they are secure Check to make sure that the power LED on your camera is lit solid red If you still cannot access your camera reset your camera and run the Camera Setup Wizard again from the CD ROM included in your package Here you can ...

Page 23: ...ction 3 mydlink Portal Live Video If the camera is available a LiveVideo feed will be displayed Video will be shown at full resolution if viewing your camera from a PC on the same local network or viewing your camera from a PC on a remote network ...

Page 24: ...pen the Maintenance Admin page where you can change your Device Name Displays the mydlink number of your device Displays the model name of your device Displays the MAC address of your device Displays the time and date that your device was added to mydlink You can set up advanced configuration by clicking Advanced Setting Button You can remove your camera by clicking Delete Camera button Device Nam...

Page 25: ...uration utility is designed to allow you to easily access and configure your DCS 5211L 5222L At the end of the wizard click Go To 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 password...

Page 26: ... the zoom out function The Home button will move the camera to the Home preset position Select from the preset drop down list to quickly move the camera to the desired preset position Please refer to camera control setup to create preset positions This setting can change the camera s Pan Tilt speed Press this button and the camera will pan from left most position to the right most position and the...

Page 27: ... a folder specified using the Storage folder button Video recording button Triggersthecamera srecordingfunction This will record the video displayed on the screen and will save it to a file on the hard drive in a folder specified using the Storage folder button Storage folder button Sets the location to save snapshots and video recordings Listen button Sends the audio received from the camera s mi...

Page 28: ...up Wizard You may choose to configure your network by using the Internet Connection Setup Wizard that includes step by step instructions to connect your camera to the Internet Alternatively you can manually configure your connection by clicking Manual Internet Connection Setup ...

Page 29: ...CP server usually enabled on your router to assign the camera its IP settings If you want to manually assign the IP settings select Static IP Address and enter the following details Enter an IP address for your camera Enter the subnet mask of your network Enter the default gateway address This is usually the IP address of your router Enter the primary DNS server s IP address This is usually the IP...

Page 30: ...on a network with a router or gateway do not select Click Next to continue Click to enable the DDNS function Dynamic Domain Name Server will hold a DNS host name and synchronize the public IP address of the modem when it has been modified The username and password are required when using the DDNS service Select your Dynamic DNS Server from the drop down menu Enter the host name of the DDNS server ...

Page 31: ...mera is in so that scheduled events occur at the correct time If your time zone observes daylight saving check the Enable Daylight Saving box and select Auto Daylight Saving to have DST set automatically or select Set date and time manually to enable drop down menus so that you can set the start and end time of daylight saving yourself Click Next to continue ...

Page 32: ... 5211L DCS 5222L User Manual Section 4 Configuration Asummaryoftheoptionsyouselectedisdisplayedforconfirmation If youarehappywiththeselectedconfiguration click Apply otherwise click Back to make the required changes ...

Page 33: ...locates the HTTP port of the camera This option allocates the RTSP port of the camera the RSTP port allows connections using QuickTime or other supported media players UPnP Universal Plug Play can be used to allow discovery of a camera as a UPnP device in your network If your router supports UPnP your camera and router can communicate allowing the router to discover which ports are used by each ca...

Page 34: ...era to work with your router please refer to Appendix A Installing the DCS 5211L DCS 5222L on a Router Without UPnP For installing multiple cameras ONE port per camera must be opened on your router the Web server HTTP port Also some browsers may restrict some ports such as 1 or 22 for security purposes If you have problems accessing your camera through HTTP try using a port higher than 1024 After ...

Page 35: ... If you are using Ad Hoc mode select the channel of the wireless network you wish to connect to or select Auto Select the type of authentication you are using on your wireless network Open Shared WEP WPA PSK or WPA PSK2 If you are using WPA PSK or WPA PSK2 authentication you will need to specify whether your wireless network uses TKIP or AES encryption If you use Open or Shared authentication this...

Page 36: ...connect to the DDNS server Enter your password again for verification You can setup how often the camera notifies the DDNS server of its current global IP address by entering a whole number in hours Displays the connection status of your DDNS account DDNS Server Address Host Name User Name Password Confirm Password Timeout Status This section allows you to configure the DDNS setting for your camer...

Page 37: ... the image flickering under certain light sources such as florescent lights This is set to Auto by default You can change the white balance of the camera image by selecting a setting from the drop down box This is set to auto by default Click this checkbox to change the camera image into black and white This will flip the image vertically This will flip the image horizontally This can be used to a...

Page 38: ...ed video resolution from the drop down menu The higher setting can obtain better quality However it will use more resource within your network Select the optimal setting depending on your network status Please note that the higher setting can obtain better quality However it will use more resources within your network Select the bitrate to assign the video This is a constant bitrate A higher bitra...

Page 39: ...u better video quality but they will also require more network bandwidth For best viewing results on a mobile phone we suggest setting the frame rate to 5 fps and the bit rate to 20 Kbps After making any changes click the Save Settings button to save your changes or click the Don t Save Settings button to discard your changes ...

Page 40: ...ur region from the drop down menu Check this if the camera is in a region where daylight saving is observed ThisoptionwilladjustDaylightSavingTime automatically Network Time Protocol will synchronize your camera with an Internet time server You can enter an IP address of a server or select from the drop down menu Select this to set the time manually Click to synchronize the time information from y...

Page 41: ...hether to start recording up to 5 seconds before the event to ensure the event is captured and the maximum duration of the video clip Select where you want the video clip to be sent It may be uploaded to an FTP or emailed to an email address You will need to enter your FTP or email server account settings Video Clip is a feature to send video clips via FTP or E MAIL when a trigger is activated Aft...

Page 42: ...er a motion is detected Schedule sends snapshots at a specified time Always provides continuous snapshots Select whether to take a single snapshot or to take 6 snapshots with a 1 second interval between them Select where you want the snapshot to be sent It may be uploaded to an FTP or emailed to an email address You will need to enter your FTP or email server account settings After making any chan...

Page 43: ...hots continuously Select to record video or take a snapshot Select the length of time for each video file This sets the capacity of your local SD Card to prevent the system from becoming unstable Whenthisoptionisselected itwillcausetheoldestfiletobedeleted when the system requires storage space for new files SD Recording Enable recording DS Card Trigger by Recording Type Recording Length Keep Free...

Page 44: ... User Manual Section 4 Configuration Digital Output You can enable the digital output port as well as configure a trigger event Motion Detection When a motion detection is triggered D I Signal A trigger from the Digital Input port ...

Page 45: ...e Enable Video Motion checkbox Next click on the video window and draw motion detection zones by clicking and dragging the mouse cursor Red areas indicate areas that will be monitored for motion The camera also has a PIR sensor which is used to detect motion using a special infrared sensor PIR is good at detecting motion from live subjects such as people and animals Enable Video Motion Enable PIR ...

Page 46: ... for a full cycle from the drop down menu Select a value between 0 and 10 0 being the slowest Enter a name for your camera location and click Add Select created presets from the drop down menu If you want to delete an entry select it and then click Delete To use the Auto Patrol feature select the desired preset positions from the Preset Locations list and add them to the Patrol Positions list by c...

Page 47: ...cally format the SD Card and create folder for video Formatting your SD Card will erase all data currently saved Click the checkbox in front of the Delete button to select all the files and catalogs below The Delete button is used to delete the files or catalogs which are selected The name of file or catalog The file s size Click to refresh the page Select the number of files to be displayed on a ...

Page 48: ...er the User Name you wish to use for the new user account and then create a password for that account Click Add to save your account Select a user from the drop down menu and click Delete to remove the user account from having access to the camera images Check to enable RTSP streaming Check to enable HTTP streaming Select Enable to allow access to the current camera snapshot via the web address in...

Page 49: ... LED indicator on or off Clicking this button will calibrate the camera so that the P T Z apparatus functions correctly The camera is automatically calibrated whenever it is powered on and initialized or reset Should the camera s pan tilt and zoom functions begin to behave incorrectly or if the device has been jarred or handled improperly you may need to recalibrate the camera manually by pressing...

Page 50: ...nfiguration button to load the new configuration Click this button to reset all settings to their factory defaults If you select to reset your settings you will need to set up your camera again Clicking the Reboot button will reboot your device This screen allows you to save and restore the camera s current configuration You can also reset all settings to factory default or reboot the device Save ...

Page 51: ...ot turn off your computer or camera and do not disconnect your network connection from your computer or camera Upgrading the firmware will not change any of your system settings but it is recommended that you save your system configuration before doing a firmware upgrade Note It is recommended that you use a wired connection for your computer and camera when upgrading the firmware Your current fir...

Page 52: ...48 D Link DCS 5211L DCS 5222L User Manual Section 4 Configuration Status This screen displays various information about your camera and its current settings Device Info ...

Page 53: ...CS 5222L User Manual Section 4 Configuration The log shows you a list of events that have happened recently You can download the log by clicking the Download button or you can empty the log by clicking the Clear button Log ...

Page 54: ...50 D Link DCS 5211L DCS 5222L User Manual Section 4 Configuration Help ...

Page 55: ...ted as it is transmitted from one wireless device to another To gain access to a WEP network you must know the key The key is a string of characters that you create When using WEP you must determine the level of encryption The type of encryption determines the key length 128 bit encryption requires a longer key than 64 bit encryption Keys are defined by entering in a string in HEX hexadecimal usin...

Page 56: ...Encryption Standard instead of TKIP User authentication which is generally missing in WEP through the extensible authentication protocol EAP WEP regulates access to a wireless network based on a computer s hardware specific MAC address which is relatively simple to be sniffed out and stolen EAP is built on a more secure public key encryption system to ensure that only authorized network users can ...

Page 57: ...era 2 View the network camera using your Internet Explorer web browser 3 Access the router with your web browser 4 Open virtual server ports to enable remote image viewing Note These are manual steps however if you decide to use the wizard it will perform every step automatically This section is designed to walk you through the setup process for installing your camera behind a router and enable re...

Page 58: ...s for future reference Run your Internet Explorer Web browser In the address bar type in the IP Address that was assigned to the Network Camera by the DCC program The DCS 5211L DCS 5222L Live Video Page appears with a window displaying live video from the camera You are able to view this screen from any PC running Internet Explorer on your LAN Click on the Setup button on the left side of the disp...

Page 59: ...p Network page displays the port settings for your camera If necessary these ports can be changed if they are already in use by other devices e g in a multiple camera environment Note Both the HTTP port and RTSP port are required to be opened for the DCS 5211L DCS 5222L ...

Page 60: ...dynamically assigned WAN IP Address Dynamic means that your router s WAN IP address can change from time to time depending on your ISP A dynamic WAN IP Address identifies your router on the public network and allows it to access the Internet To find out what your router s WAN IP Address is go to the Status menu on your router and locate the WAN information for your router as shown on the next page...

Page 61: ...rts The ports normally used by the DCS 5211L DCS 5222L are blocked from access over the Internet Therefore these ports need to be made accessible over the Internet This is accomplished using the Virtual Server function on the DIR 655 router The Virtual Server ports used by the camera must be opened through the router for remote access to your camera Virtual Server is accessed by clicking on the Ad...

Page 62: ... ports to conserve bandwidth Check with your ISP so that you can open the appropriate ports accordingly If your ISP does not pass traffic on port 80 you will need to change the port the camera uses from 80 to something else such as 800 Not all routers are the same so refer to your user manual for specific instructions on how to open ports Enter valid ports in the Virtual Server section of your rou...

Page 63: ...CS 5222L mydlink com After going through the wizard you should see Remote Status Enabled on the summary page If you see Remote Status Disabled make sure that the front LED on your camera is lit solid green your Internet connection is working your router s LAN WAN connections are working properly your router has UPnP enabled if your router does not support UPnP please refer to Appendix A your route...

Page 64: ...amera s network connection unreliable 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 such as a hub or switch utilized by the Network...

Page 65: ...gement allows you to adjust the related parameters for improved images such as brightness contrast hue and light frequency Please refer to the Web Configuration section for detailed information 10 Why are no images available through the Web browser 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 ...

Page 66: ...rectly under an extreme bright light The PIR cannot fully suppress a bright white light Any movements from an object with a normal body temperature like humans or animals can be detected To avoid any malfunctions install this camera at the proper height To avoid any malfunctions install this camera in an environment with an average temperature of 25 C Only within a distance of 2 5 meters can small...

Page 67: ...cellular computer network that transmits and receives data with radio signals instead of wires Wireless LANs are used increasingly in both home and office environments and public areas such as airports coffee shops and universities Innovative ways to utilize WLAN technology are helping people to work and communicate more efficiently Increased mobility and the absence of cabling and other fixed inf...

Page 68: ... can access the network You must be within the wireless network range area to be able to connect your computer There are two different types of wireless networks Wireless Local Area Network WLAN and Wireless Personal Area Network WPAN Wireless Local Area Network WLAN In a wireless local area network a device called an Access Point AP connects computers to the network The access point has a small a...

Page 69: ...b check email instant message and etc Gets rid of the cables around the house Simple and easy to use Small Office and Home Office Stay on top of everything at home as you would at office Remotely access your office network from home Share Internet connection and printer with multiple computers No need to dedicate office space ...

Page 70: ...process of setting up a wireless network Tips Here are a few things to keep in mind when you install a wireless network Centralize your router or Access Point Make sure you place the router access point in a centralized location within your network for the best performance Try to place the router access point as high as possible in the room so the signal gets dispersed throughout your home If you ...

Page 71: ...eer to peer communication using wireless network adapters on each computer such as two or more DCS 5222L wireless network Cardbus adapters An Infrastructure network contains an Access Point or wireless router All the wireless devices or clients will connect to the wireless router or access point An Ad Hoc network contains only clients such as laptops with wireless cardbus adapters All the adapters...

Page 72: ...Start Run In the run box type cmd and click OK At the prompt type ipconfig and press Enter This will display the IP address subnet mask and the default gateway of your adapter If the address is 0 0 0 0 check your adapter installation security settings and the settings on your router Some firewall software programs may block a DHCP request on newly installed adapters If you are connecting to a wire...

Page 73: ...dapter and select Properties Step 3 Highlight Internet Protocol TCP IP and click Properties Step 4 Click Use the following IP address and enter an IP address that is on the same subnet as your network or the LAN IP address on your router Example If the router s LAN IP address is 192 168 0 1 make your IP address 192 168 0 X where X is a number between 2 and 99 Make sure that the number you choose i...

Page 74: ... a few steps Home key Pressing Home key will move camera to the home position i e the center position calibrated last time or the position set by user Calibrate key Pressing Calibrate key will do calibration of both pan and tilt position by moving from end to end where a position sensor is located and go to the corrected home position Privacy key Pressing privacy key will tilt to privacy position ...

Page 75: ...ns Matrix Index Key Name Key Code Function 1 2 Up 44 Tilt move up 2 1 Left 4C Pan move to the left 2 2 Home 06 Return to home position 2 3 Right 40 Pan move to the right 3 1 Calibrate 07 Calibrate home position 3 2 Down 48 Tilt move down 3 3 Privacy 0E Tilt to privacy position ...

Page 76: ...ECIFICATION DO Photo Relay OUTPUT Normal Open Close circuit current max 70 mA AC or 100 mA DC On Resistance max 30 Ohm Open circuit blocking voltage max 240VAC or 340VDC DO Photo Relay OUTPUT Common DI Photo Relay INPUT Active High voltage 2 5 25VDC Inactive Dropout voltage 0 1 5 VDC Internal on current has limit at 7mA to protect the photo relay DI Photo Relay INPUT Monitoring and Controlling By ...

Page 77: ... Full Duplex operation MDI MDIX auto negotiation 802 3x Flow Control support for Full Duplex mode Wireless Connectivity DCS 5222L only 802 11g n Wireless with WEP WPA WPA2 Security WPS Support Sensor 1 4 inch WXGA 1280x800 Lens Focal length 4 57mm F1 9 Microphone Signal noise ratio 40dB 3dB Omni directional Reset Button Reset to factory default Video Codec H 264 MPEG4 MJPEG triple format compressi...

Page 78: ... Powered by an external power adapter Maximum power consumption DCS 5222L 10 5W motor on 8 2W motor off DCS 5211L 9W motor on 6 1W motor off Dimensions WxDxH 114 0mm x 114 0mm x 125 0mm without bracket and stand Weight 540g without bracket and stand Operation Temperature 0 to 40 C 32 to 104 F Storage Temperature 20 to 70 C 4 to 158 F Humidity 20 80 RH non condensing Emission EMI Safety Other Certi...

Search results

Summary of Contents for DCS-5211L

Reviews:

D-Link DCS-5211L, User Manual, Page: 77 / 78

Search results

Summary of Contents for DCS-5211L

Reviews: