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Page 9 

2.4 

Connection Diagram

 

 

(1)Video input 

 

(2)Video output   

 

(3)Audio output   

      (4)Audio input              

(5)USB interface                          (6)Network interface                            (7) VGA interface   

                     

(8)Power input

 

 

2.5

 Audio/Video IO Connections

 

2.5.1 

Connect Video Input

 

The DVR has BNC video input connectors. Signal requirements

PAL/NTSC

 

BNC

1.0V

75

Ω

 

Video  signal  should  conform  to  the  national  standards  with  a  higher  signal-to-noise  ratio,  low 

distortion and low interference; requiring picture to be clear, with no image distortion, with natural color 

and appropriate brightness. 

 

Ensure stable and reliable camera signal:

 

Install the camera in appropriate locations to avoid backlighting and surroundings with dim light or 

use low illumination camera and camera with effective backlight compensation.

 

Cameras should share reliable common ground with the DVR to ensure the normal operation of the 

camera.

 

Ensure stable and reliable line transmission of signal:

 

Use high-quality, shielded video coaxial cable. Select the right type depending on the transmitting 

distance. If the distance is extensive, you should consider the use of cable with twisted pairs, video signal 

enhancing devices and fiber-optic cables to maintain the signal quality.

 

Keep  the  video  transmitting  line  away  from  other  devices  and  circuits  that  generate  strong 

electromagnetic interference.    In particular, protect it against high voltage power surge.   

 

Ensure secure wire connections:

 

Summary of Contents for EL430DVR

Page 1: ... the unit or replace parts yourself Operating Environment Keep and use the product at temperatures between 0 C 40 C Keep it away from direct sunlight or heat sources Do not install the unit in a humid environment Do not expose the product to a smoky or dusty area Avoid serious collision Do not drop the device Install the product on a stable and level surface to prevent the device from falling Ensu...

Page 2: ... Power On 12 3 2 Turn Power Off 12 3 3 Log in 13 3 4 Preview 13 3 5 Desktop Quick Launch 14 3 5 1 Main Menu 14 3 5 2 Video Playback 15 3 5 3 Recording Control 19 3 5 4 Alarm Output 19 3 5 5 PTZ Control 20 3 5 6 Image Color 26 3 5 7 Output Adjustment 26 3 5 8 System Shutdown 27 3 5 9 Page Switch 27 Chapter 4 Main Menu 28 4 1 Main Menu Navigation 28 4 2 Video Recording Functions 30 4 2 1 Recording s...

Page 3: ... Management 54 4 5 2 User Management 55 4 5 3 Online User 58 4 5 4 Output Adjustment 59 4 5 5 Auto Maintenance 59 4 5 6 Restore Default 59 4 5 7 System Upgrade 60 4 5 8 Device Information 60 4 6 System Information 61 4 6 1 Hard Drive Information 61 4 6 2 Stream Statistics 62 4 6 3 Log 62 4 6 4 Version Information 63 4 7 System Shutdown 64 Chapter 5 FAQ and Maintenance 65 5 1 FAQ 65 5 2 Maintenance...

Page 4: ...It is a perfect choice for security applications in industries and sectors such as banking telecommunication electricity law enforcement transportation intelligent community manufacturing facilities warehouses natural resources and water conservation facilities 1 2 Main Features Real time surveillance Analog output interface and VGA connector to connect monitoring device or screen display 2 BNC ou...

Page 5: ...PTZ control Remote control video retrieval and live playback Configuration of device parameters through user port Live recording and playback on client s PC Alarm coordination Alarm linkage to camera recording auto sequence screen display buzzing screenshot snapping Email notification and FTP uploading Multi channel relay on off switch for alarm outputs facilitating coordinated actions and on site...

Page 6: ...Page 6 Keyboard operation Quick copy paste function to clone same settings in the menu Other features 2 X 12V power outputs Timer ...

Page 7: ...e product model on the front panel plaque and make sure it is the model you ordered Do not tear off the label on the rear panel as it is extremely important to our post sale service When you contact our post sale service you will need to provide the model number and serial number printed on the label 2 Items to be checked after opening the case In addition to checking for visible damage please ins...

Page 8: ...ss channel 1 or channel 4 for single screen view in surveillance screen Press left or right arrow to move the cursor in pop up main menu or sub menu Press left or right arrow to move the focusing point of a functional button under playback mode Access channel 2 or channel 3 for single screen view in surveillance screen 2 Enter ENTER Confirm Access main menu 3 Cancel ESC Return to previous menu or ...

Page 9: ...iate locations to avoid backlighting and surroundings with dim light or use low illumination camera and camera with effective backlight compensation Cameras should share reliable common ground with the DVR to ensure the normal operation of the camera Ensure stable and reliable line transmission of signal Use high quality shielded video coaxial cable Select the right type depending on the transmitt...

Page 10: ...surrounding power source and devices Possible electricity leakage from low quality TV could result in damage to other devices 2 5 3 Audio Signal Input AV interface for audio input With higher impedance active pickup is required As with video input the audio transmission line should minimize interference prevent inadequate soldering and faulty connections Pay special attention to protection against...

Page 11: ...all shield being used for common ground B Prevent against high voltage power surge Wire cables must be able to protect equipment from lightning C Connect a 120 Ohm resistor in parallel at the far end to reduce reflection and guarantee the signal quality D The AB wire connections of the DVR s 485 cable cannot be combined with 485 cables from other output devices E AB line voltage of the decoder sho...

Page 12: ...nit and the power cord is connected correctly 2 External power supply requires 220V 10 50Hz We recommend the use of power supply with stable voltage and less ripple interference Whenever possible consider the use of UPS for power backup 3 2 Turn Power Off The unit can be turned off using softswitch and hardswitch Softswitch Select Turn Off in Main Menu Shutdown System Hardswitch Press the power sw...

Page 13: ...r has superuser permissions while the defaults for guest and default are limited to preview and playback Admin and guest users may change their password but cannot change the permissions Default user is a default login user Default user may change permissions but not the password Figure 3 1 Log In Password protection If the password is entered incorrectly on 3 consecutive occasions the system will...

Page 14: ...ymbols 3 5 Desktop Quick Launch In Preview mode right click the mouse to pop up Quick Launch menu as shown in Figure 3 2 Quick Launch menu includes Main Menu PlayBack Recorde Mode Alarm output Highspeed PTZ PTZ Control Color Setting Output adjust System shutdown and Screen switch Figure 3 2 Quick Launch Menu 3 5 1 Main Menu The main menu includes operating functions of the device ...

Page 15: ...the hard drives Playback page is accessible by either using desktop quick launch or entering Main Menu Recording Functions Video Playback Note For normal playback the hard drive containing the file must be set up as read write or read only refer to 4 5 1 Hard Drive Management ...

Page 16: ...e screen as Figure 3 5 and follow the instructions Note Install a storage device large enough for the backup files before the operation If the backup is terminated files already copied to the storage device can be played back independently Playback Control Operating Prompt Recording Type Progress Bar Option Toggle between time and file mode File Search Channel Selection Date Selection Storage Devi...

Page 17: ...evices Stop Stop the backup Backup Click Backup to show the dialog as Figure 3 6 Backup can be setup based on file type channel or time Figure 3 6 Record Backup Empty Empty file information shown Add Show all information matching the specified file properties Start Stop After selecting the files click Start to backup and Stop to terminate the backup Note During backup you may exit the page to exec...

Page 18: ...e of the record being searched Descriptions of Table Playback Control please see below Keys Functions Keys Functions Play Pause Play reverse Stop Step forward Fast forward Play last frame Play next frame Play last file Play next file Loop Full Screen Table 3 2 Playback Control Keys Note Frame playback can only be used in Pause mode Operation tips Show the function of the button indicated by the cu...

Page 19: ...either using desktop quick launch or entering Main Menu Recording Functions Recording Setup Figure 3 8 Recording Control Schedule Record in accordance with the configuration parameters Manual Regardless of the current status of the channel selecting Manual will start the recording on the corresponding channel STOP Regardless of the current status of the channel selecting STOP will stop the recordi...

Page 20: ...trol Pan Tilt Zoom connected to the device Use desktop quick launch to enter the menu Control interface is shown as in Figure 3 10 Functions supported Control PTZ directions step length zoom focus aperture operating preset point to point patrol trace boundary line scanning auxiliary switch light switch and horizontal rotation Note 1 Before operating make sure the A B cables of the dome are properl...

Page 21: ...g the mouse wheel while holding down the left button can adjust the camera zoom Set Access function setting menu Page Switch Enter function control menu Special Features 1 Preset Select certain direction as preset PTZ automatically rotates in the direction based on the preset value 1 Preset setup To setup a direction as preset follow these steps Step 1 In Figure 3 10 use arrow keys to rotate the P...

Page 22: ...o construct a patrol route PTZ will sweep the patrol route repeatedly following the Point to Point patrol setup 1 Point to Point Patrol Setup Patrol route is the trace line consisted of multiple preset positions To set up Step 1 In Figure 3 10 use arrow keys to rotate the PTZ to the desired preset direction Click Set key to enter Figure 3 13 Step 2 Click the Point to Point Patrol key and enter a r...

Page 23: ...Figure 3 12 Enter Point to Point Patrol number in Value Input box Click Point to Point Patrol key to start PTZ patrol repeatedly Click Stop key to terminate the patrol 3 Trace Using PTZ control to setup a patrol trace Call it up to have PTZ patrolling along the trace repeatedly 1 Setup Trace To set up the trace follow the steps below Step 1 In Figure 3 10 click Set key to open Figure 3 14 Step 2 C...

Page 24: ...use arrow keys to rotate the PTZ to the desired preset direction Click Set key to enter Figure 3 15 Select the left boundary and return to Figure 3 10 Step 2 Use arrow keys to select the desired position Click Set to enter Figure 3 15 and select the right boundary Then return to Figure 3 10 Step 3 Complete the setting for left and right boundaries of the position Note When left and right boundarie...

Page 25: ...n Click Horizontal Rotation button to horizontally rotate the PTZ relative to the camera s original position Click Stop key to terminate the rotation 6 Reverse Rotation Click Horizontal Rotation button to reverse the rotation of the PTZ 7 Reset PTZ restarts Values of all settings return to zero 8 Page Switch In Figure 3 12 click Page Switch to enter Figure 3 16 for auxiliary feature setup Each aux...

Page 26: ...s the interface through the desktop quick launch menu Set up image parameters of the selected channel current channel in single screen preview or the channel where the cursor lies in multi screen preview Image parameters include Hue Brightness Contrast and Saturation It is also possible to set up different image parameters in two different time periods if needed Figure 3 18 Image Color 3 5 7 Outpu...

Page 27: ...wn the system Log Out Exit the menu Need to re enter the password on the next visit Shut Down Exit the system and turn off the power After press the Shut Down key a progress bar pops up for shutdown confirmation Shutdown will be executed in 3 seconds unless it s cancelled Reboot Exit then restart the system 3 5 9 Page Switch Based on your selection preview single screen 4 screen 8 screen 9 screen ...

Page 28: ...quence Video Masking Set up video masking alarm channel sensitivity and parameters for coordinated actions arm schedule alarm output screen prompts recording PTZ and auto sequence Video Loss Set up video loss alarm channel and parameters for coordinated actions arm schedule alarm output screen prompts recording PTZ and auto sequence Alarm Input Set up alarm input channel equipment type and paramet...

Page 29: ...op bits parity Serial Port Settings Set serial port functions baud rate data bits stop bits parity Auto Sequence Settings Set auto sequence mode and intervals Management Tools Hard Drive Management Set specified hard drive as read write disk read only disk redundant drive data deletion data recovery User Management Change user and user group Change password Add user and user group Delete user and ...

Page 30: ...down and restart 4 2 Video Recording Functions The DVR can perform functions related to video recording recording settings image storage video playback video backup 4 2 1 Recording settings Set recording parameters on monitoring channels At initial startup the system defaults to 24 hours continuous recording Corresponding settings can be defined by entering Main Menu Video Recording Functions Reco...

Page 31: ...onds before an event actual time could be different depending on the bit stream Record Mode Set recording status There are three statuses Configured manual and off Schedule Record in accordance to the recording types general test and alarm and time period defined Manual Regardless the current status of the channel select Manual will start general recording on all channels Stop Regardless the curre...

Page 32: ...larm Function section in Chapter 4 3 4 2 2 Image Storage Set snapshot parameters on monitoring channels At initial startup the system defaults to 24 hours continuous snapping Corresponding settings can be defined by entering Main Menu Video Recording Functions Image Storage Note For normal operation of image storage at least one of the installed hard drives needs to be set as the Snapshot disk Ref...

Page 33: ...the defined time period Detect During specified time range trigger motion detection video masking and video loss alarm signals The corresponding alarm settings will turn on the snapshot function and start snapshot when receiving test signals Alarm In specified time period trigger the external alarm signal Alarm Input setting will turn on the snapshot function and start test snapshot when alarm sig...

Page 34: ...ices Stop Stop the backup Backup Click Backup to show the dialog as Figure 4 3 Backup can be setup based on file type channel or time Figure 4 3 Record Backup Empty Empty displayed file information Add Show all information matching the specified file properties Start Stop After selecting the files click Start to backup and Stop to terminate the backup Note During backup you may exit the page to ex...

Page 35: ...is the same as the right mouse button Figure 4 4 Motion Detection Channel Select the channel to set up motion detection area Enable Highlight to enable the Motion Detection function Corresponding settings can only be defined after Enable is ticked Sensitivity Six settings based on sensitivity level Region Click Setting to enter the area which is divided into PAL22X18 Colored areas are the areas co...

Page 36: ... only triggers alarm in sequence Alarm Output When motion occurs the setting will activate corresponding external devices connected to the alarm output port Delay Indicate the extended time for which the alarm will continue after the alarm ends ranging from 10 300 seconds Recording Channel Select the desired recording channel Can be ticked When alarm is triggered the system will activate the recor...

Page 37: ...or preset points point to point patrol and auto sequence in Quick Launch PTZ Control Figure 4 7 PTZ Linkage Video Delay After the alarm status ends the alarm recording will continue for an extended time ranging from 10 300 seconds Screen Prompt The on screen alarm information prompt pops up on local display EMAIL Notification Highlight indicates that email notification will be sent to the user whe...

Page 38: ...n Detection 4 3 3 Video Loss When DVR is unable to receive a channel video signal it will activate the video loss alarm and coordinate functions Note Advanced key is the same as the right mouse button Figure 4 9 Video Loss To set refer to Chapter 4 3 1 Motion Detection ...

Page 39: ...e same as the right mouse button Figure 4 10 Alarm Input To set refer to Chapter 4 3 1 Motion Detection 4 3 5 Alarm Output See Chapter 3 5 4 Alarm Output 4 3 6 Exception Handling Analyze and test certain hardware and software in current system When detecting exceptional events the unit makes corresponding responses such as screen prompt buzzer beep etc ...

Page 40: ...e activated after Enable is ticked Screen Prompt The on screen alarm information prompt pops up on local display Buzzer The device generates two long buzzer beeps when the alarm sounds 4 4 System Settings To set various function parameters in DVR general settings encoding settings network settings network service output modes PTZ settings serial port settings and auto sequence settings ...

Page 41: ... full it will stop recording Select Overwrite When the installed storage disk is full it will continue recording and overwrite the oldest video files DVR No To be used when multiply DVRs are controlled by one remote control press the address key on the remote control and input control address that matches the local device serial number of corresponding DVR to enable remote operation Video Standard...

Page 42: ...t D1 HD1 CIF QCIF codes and another low bit rate stream QCIF code for network transmission while taking care of local storage and remote network transmission in the meantime While the network bandwidth is limited dual stream covers both image quality and transmission quality practically breaking through the network bottleneck It flexibly picks stream format in accordance with the available network...

Page 43: ...change picture quality While the capacity of related devices allows the bigger the bit rate the better the picture quality Bit rate reference span D1 512 2560kbps HD1 384 2048kbps CIF 64 1024kbps QCIF 64 512kbps Audio Video When all checkboxes are ticked the video file has multiplexed A V stream Sub stream Settings Sub stream is mainly used on the client side monitoring or mobile applications Chan...

Page 44: ...ress provided by your local network provider Restart the system after set the address TCP Port Default is 34567 HTTP Port Default is 80 Network High Speed Download Network high speed download Network Transmission Strategies Three strategies Self adaptive Picture Quality Preferred Fluency Preferred Depending on the settings network transmission will automatically adjust the bit rate Self adaptive s...

Page 45: ...nd password provided by ISP Internet Service Provider Save and restart the system After restart DVR will automatically connect the network using PPPoE Upon successful network connection the IP in IP Address will be changed automatically to the assigned dynamic WAN IP address Operations After dialling up PPPoE successfully look up in IP Address for the current IP address of the DVR Use this IP addr...

Page 46: ...GMT 2 Moscow GMT 3 New Delhi GMT 5 Bangkok GMT 7 HK Beijing GMT 8 Tokyo GMT 9 Sydney GMT 10 Hawaii GMT 10 Alaska GMT 9 Pacific Time GMT 8 US Mountain Time GMT 7 US Central Time GMT 6 US Eastern Time GMT 5 Atlantic Time GMT 4 Brazil GMT 3 Mid Atlantic GMT 2 Synchronization Interval Time synchronization interval with NTP server Default is 10 minutes EMAIL Settings In the case of alarm events or alar...

Page 47: ...email sender s EMAIL address Receiver In the event of an alarm notification is sent via email to specified receivers Up to three recipients are allowed Title The content of Email subject is able to be customized IP Filter Settings Choose the White List to enter the IPs allowed to access the DVR The list supports 64 IP settings Choose the Black List to block IPs which are not allowed to log in to t...

Page 48: ...red with DDNS service provider Password The account password registered with DDNS service provider After the DDNS is successfully configured and enabled you may access the DVR by entering your registered domain name directly in the IE address bar Note DNS must be set up properly in the Network Settings FTP Settings In the event of an alarm or alarm linkage video recording or snapshot FTP is used t...

Page 49: ... User Name Permitted FTP user name Password Corresponding user password Maximum File Length The maximum size of each uploading file pack The default is 128M Remote Directory Directory of the uploading files Mobile Monitoring Settings To access DVR using mobile phone map the port on the router Perform user monitoring and operation based on network protocol ...

Page 50: ...matically forwards port mapping on the router When using the function make sure that the UPnP on the router is enabled Figure 4 26 UPnP Settings Enable Highlight to enable the UPnP function Settings can only be activated after Enable is ticked HTTP Router will automatically assign a port number to the device Need to enter the port number to start an IE browser TCP Router will automatically assign ...

Page 51: ...rding status alarm status video streaming transparency area coverage time title and channel title Figure 4 27 Output Mode Channel Title Click channel name Change button to enter channel name menu and change Channel Name support up to 16 Chinese characters or 25 English alphabet letters Time Display Highlight sign to display system date time on monitoring screen Channel Title Highlight sign to disp...

Page 52: ...itle set the display position for Time Title and Channel Title 4 4 6 PTZ Settings Figure 4 28 PTZ Settings Channel Select input channel for dome camera Protocol Select proper dome camera protocol for corresponding brand and model e g PELCOD Address Set address for the corresponding dome camera The default is 1 Note The address set here must match the dome camera address or the dome camera cannot b...

Page 53: ...ain serial port peripherals Baud Rate Select the appropriate baud rate length Data Bits Available options 5 8 Stop Bits Two options are 1 and 2 Parity Includes odd parity even parity parity flag none parity 4 4 8 Auto Sequence Settings Set screen auto sequence display Highlight to enable the mode Available selections include single mode auto sequence such as single screen 4 screen 9 screen and 16 ...

Page 54: ...fault System Upgrade and System Information 4 5 1 Hard Drive Management Hard Drive Configuration The menu shows current disk information including the number of disks connected access interface type status and aggregate capacity Hard Drive Operation including set read write disk read only disk redundant disk disk format and error recovery Select the hard drive and click the functional keys on the ...

Page 55: ...et letters numbers underscores hyphens and dots Other characters are not allowed 2 There are no limit to the number of users and groups User groups can be added or deleted based on user s need Factory default has two levels user admin User can set his own group attributes Members of a group can specify any functional rights permitted in the group 3 User Management adopts group and user two level s...

Page 56: ...The beginning and end of the password cannot be left blank while spaces are allowed between letters Note User with administrator rights is able to change not only his own password but also other users passwords Figure 4 33 Modify Password Add User Add group members and set user permission as shown in Figure 4 31 Enter Add User menu input user name and password select the belonging group and select...

Page 57: ...e permission attribute of the group For the convenience of user management we recommend setting the permission for regular users at a lower level than for advanced users Figure 4 34 Add User Add Group Add a new user group and set group permissions as shown in Figure 4 32 There are 36 permission items to choose from including Device Shutdown Live Surveillance Playback Recording settings Video Backu...

Page 58: ...no user in the group In Figure 4 29 click Delete Group button to show Figure 4 33 Select the group to be deleted and click Delete button Figure 4 36 Delete Group 4 5 3 Online User View information on the network users connected to the local DVR You may also disconnect the selected network users by tick in checkbox The account will be frozen until the next reboot Figure 4 37 Online User ...

Page 59: ...hedule to automatically restart the system and delete the files with set time limit Figure 4 38 Auto Maintenance Auto On Off Time Set timer to automatically turn on and off the DVR 4 5 6 Restore Default Restore the system to factory default configuration may select in the menu specific items that need be restored ...

Page 60: ...Default 4 5 7 System Upgrade Figure 4 40 System Upgrade Upgrade Position Select USB interface Upgrade File Select the file being upgraded 4 5 8 Device Information Provide device information on DVR interface for clients convenience ...

Page 61: ... Display the status of the installed hard disk including the types of the disks aggregate size free space and recording time Figure 4 42 Hard Drive Information Tip In Hard Drive Information means the disk works properly X indicates a failure and means not installed If the user needs to replace a bad disk shut down the device before removing the bad disk and install the new one ...

Page 62: ...demonstrates the change in streaming Figure 4 43 Stream Statistics 4 6 3 Log View system log based on the search method setup Log is categorized into system operation configuration data management alarm event recording operation user management and file management To search the log by time period press the Search button The system will display the log in table format each page contains 128 lines P...

Page 63: ...Page 63 Figure 4 44 Log 4 6 4 Version Information Show basic information on the device including hardware information software version and release time Figure 4 45 Version Information ...

Page 64: ...Page 64 4 7 System Shutdown See Chapter 3 5 8 System Shutdown ...

Page 65: ...rd drive or hard drive cable 6 Front panel failure 7 DVR motherboard failure 2 Q DVR restarts automatically few minutes after being turned on or freezes frequently A Possible cause 1 Input voltage unstable or too low 2 Hard drive has bad tracks or damaged cable 3 Switching power supply has insufficient power 4 Front end video signal is unstable 5 Poor ventilation excessive dust poor operating ambi...

Page 66: ...hed 3 Video transmission distance is too far or video signal attenuates too much in transmission line 4 DVR color and brightness settings are incorrect 6 Q Local playback search finds no video A Possible cause 1 Hard drive cable or jumper error 2 Hard drive is damaged 3 Upgraded with a program different to the original program in the system 4 The video being searched has already been overwritten 5...

Page 67: ...d battery connection or power low 3 Crystal resonator not working properly 11 Q DVR cannot control PTZ A Possible cause 1 Front end PTZ malfunction 2 PTZ decoder settings wiring or installation is incorrect 3 Incorrect cable wiring 4 PTZ settings in DVR are incorrect 5 PTZ decoder and DVR protocol do not match 6 PTZ decoder and DVR address do not match 7 When connected with multiple decoders PTZ d...

Page 68: ...pgrade video card driver 4 Network connection error 5 Network setup error 6 Incorrect user name and password 7 Version of client software does not match the program version of DVR 14 Q No video image or only mosaic on network preview and video playback screen A Possible cause 1 Insufficient network bandwidth 2 Client s PC may have resource constraints 3 DVR may have the area masked or privacy prot...

Page 69: ...h transfer 4 Transmission distance is too far 18 Q Cannot disarm the alarm signal A Possible cause 1 Alarm settings are incorrect 2 Alarm output turned on manually 3 Input device malfunction or incorrectly connected 4 Problem with certain versions of the program Upgrade the program to solve problem 19 Q Alarm is not functioning A Possible cause 1 Alarm settings are incorrect 2 Incorrect alarm cabl...

Page 70: ...l menu or network operation A Solutions 1 Please contact your local customer service or our headquarters for assistance We can help you to find the solution based on the device model and program version information that you provide 5 2 Maintenance 1 In a damp environment dust on circuit board may result in short circuits affect the normal operation of the DVR and even damage the DVR For long term ...

Page 71: ...enu or on off button on the front panel hold it down for 3 seconds to turn off the DVR power automatically and prevent damage to the hard drive 6 Keep the DVR away from heat sources or hot lplaces 7 Keep the area around the DVR well ventilated Regular system inspection and maintenance are required ...

Page 72: ...y it in full screen Double click again to return to multi screen Left click mouse Select corresponding function in menu page Right click mouse Pops up desktop quick launch menu in preview page Quick launch menu for current function during menu operation Scroll Wheel Turn the mouse scroll wheel to increase decrease value in a number box Switch among options in combo box Page up or down in list box ...

Page 73: ...red in Hours use of disk space each hour M Hour Similarly we can derive a formula for calculating recording time Recording Time Hour Total HD Capacity M Use of disk space each hour M Hour number of channels The DVR uses MPEG4 H 264 compression technology and has a wide dynamic range When calculating the hard disk capacity it should use the estimated size of the files generated each hour on each ch...

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