Talos Security H.264 Network DVR, User Manual

Page 1: ...H 264 Network DVR 1 H 264 Network DVR User Manual September 2010 ...

Page 2: ... 10 2 4 Rear Panel 8 Channel 11 2 5 Remote Control Operation 12 CHAPTER 3 Basic Operation 14 3 1 1 Mouse operation 14 3 1 2 Power on 16 3 1 3 Shut down 17 3 2 Login 18 3 3 Preview 19 3 4 Record 19 3 4 1 Recording 19 3 4 2 Playback 20 3 4 3 File Backup 22 CHAPTER 4 Menu Operation 24 4 1 Menu Preview 24 4 2 Menu Operation 27 4 2 1 System Information 28 Menu SYSTEM INFO Figure 4 2 28 4 2 2 Disk Manag...

Page 3: ...Recording Setup 42 6 4 PTZ Setup 43 Main Menu System PTZ Setup Figure 6 5 43 6 5 Network Setup 44 6 5 1 E mail Setup 44 6 6 Alarm Setup 46 Main Menu System Alarm Setup Figure 6 8 46 6 7 Video Detection Setup 47 6 7 2 Video Loss 48 6 7 3 Video Blind 49 6 8 Local Display 50 7 1 User Accoun 52 7 2 Exception 56 7 3 System Maintenance 57 7 4 Output Adjustment 57 7 5 Restore 59 CHAPTER 8 Remote Network ...

Page 4: ...Alarm Setting PTZ Setting Video Detect Video Loss Video Blind 75 8 5 Toolbar Introduction 76 8 5 1 Real Time Preview Control 75 8 5 2 Playback 76 User can playback the local recording files and also can remote playback the files on DVR Click stop to stop playing 76 8 6 Other Operations 77 8 6 1 PTZ and Preset Control 77 8 6 2 Lens Control 77 8 6 3 Window View Modes 78 CHAPTER 10 Mobile phone clien...

Page 5: ...igh moisture A DVR is a delicate device and you should leave service of the unit to a qualified technician Installation The DVR must be installed horizontally and on a stable surface The DVR chassis should be grounded Install the hard disk drive prior to initial operation Avoid opening the DVR or replacing the hard disk while the unit is turned on A high speed hard drive is recommended Place the D...

Page 6: ...twork and more make these systems more stable the image clearer and more powerful functionality Stand alone DVRs can be used independently but can also be networked to form a powerful network monitoring center Similar networks are used in different areas and sectors of security and surveillance domestic and international banking telecommunications power justice traffic residential area factory sto...

Page 7: ... Real time recording independently for each channel search and playback for 1ch 4ch remote monitoring and remote access Multi record modes Manual time schedule alarm motion Search recorded files fast and search recorded files by type Multi playback modes slow motion fast motion and frame by frame playback Displays the exact time of an incident in playback Playback recorded files via network Networ...

Page 8: ...iple decoder protocols for PTZ and speed dome control functions Smart Operations Intuitive GUI interface USB mouse operation CHAPTER 2 Familiarization 2 1 Unpacking and Inspection Upon receipt of your DVR check for any physical damage to the unit or package Verify the contents of the package include the DVR Manual USB mouse IR remote control power supply and cable screws to attach the hard drive a...

Page 9: ...Function Menu ESC Button ESC Press to close the main menu REC Button REC Press to RECORD SLOW Button SLOW Press to slow playback speed by 1 2 1 4 1 8 FAST Button FAST Press to increase forward playback speed 2X 4X 8X STOP Button STOP Press to stop playback PLAY PAUSE Button PLAY PAUS Press to freeze playback to one frame press again to advance frame by frame SEARCH Button SEARCH Press to SEARCH Pr...

Page 10: ...NEL 4CH GND ground NET INTERNET INTERFACE AOUT Audio output NCX NOX Alarm Out USB with USB Mouse USB Disk VIN IN Video input ALARM 1 2 3 4 Alarm in MOUSE with USB Mouse AIN IN Audio input RS 485 RS485 VGA VGA output VOUT Video output ...

Page 11: ...NET INTERNET INTERFACE AOUT Audio output NCX NO X Alarm Out USB with USB Mouse USB Disk VIN IN Video input ALARM 1 2 3 4 Alarm in MOUSE with USB Mouse AIN IN Audio input RS 485 RS 485 VGA Video output V OUT Video output with BNC interface ...

Page 12: ...H 264 Network DVR 12 2 5 Remote Control Operation Use the remote to control the DVR ...

Page 13: ...s control Volume up Number increase Play Pause 11 MUTE Mute 4 Switch between Full screen and Multi screens playback modes 12 0 9 10 Number input Enlarge the corresponding frame to full screen 5 MENU Open menu 13 Backspace 6 ESC PTZ Close the software keyboard Close the current window Exit the current control Back to the last menu Exit the status of box list selection Enter into or exit the PTZ con...

Page 14: ...ion button to get the drop down list click on the list of items to choose an action In PTZ mode click the corresponding buttons on the screen to control the rotational direction of the camera In the input box click to select numbers symbols text transform on the soft keyboard Backspace _ spaces 1 Single left click When the input type is data number the numeric keypad below will show 0 9 enter the ...

Page 15: ...tch the display mode of the view screen start record playback PTZ control start audio set recording mode and more 2 Single right click In the Quad mode click the left mouse button for the pop up menu below This menu allows you to navigate the menu search play stop increase decrease playback speed show or hide the control strip and more ...

Page 16: ... Double click any item in the recording list to play the file Double click the left mouse button to enlarge the video window to full screen or restore it to multi screen 3 Left double click In PTZ control mode double click the left mouse button at the center of the screen to enlarge the screen or restore it to multi screen Adjust the numbers Flip list box up and down 4 wheel Control the lens zoom ...

Page 17: ...Figure 3 1 Figure 3 1 3 1 3 Shut down Correct Shut Down A Press and hold the POWER button approximately 3 seconds then confirm shut down of the system this will stop all the functions of the DVR Figure 3 2 Figure 3 2 B Enter into the menu and select Shutdown System in exit system menu Figure 3 3 ...

Page 18: ...moved The initial password for user admin is 666666 this is the highest authority user and enables out all system operations The initial password of user user is 123456 this user level can record playback backup and set parameters etc but cannot add new users or make changes in the system The user default is set at the factory it has the lowest authority level only monitoring capability Figure 3 4...

Page 19: ... in different modes depending on specific needs If an attempt is made to change the recording mode while recording this icon will be displayed on the screen 3 4 1 Recording Note A user must have recording authority to record Prior to recording please confirm that a hard disk has been installed in the DVR and the hard disk has been formatted correctly 1 Enter into the recording control interface Cl...

Page 20: ...There are two playback modes fast playback and advanced playback The user can search files to playback or search date time for playback 1 Fast Playback Click Search or the right mouse button from the preview screen then select playback from the pop up menu to enter the fast playback fast playback only supports single channel playback mode 2 Advanced Playback Select Menu File Playback to enter adva...

Page 21: ...to time SEARCH TYPE Select the file type that you want to search options are ALL TIME ALARM MOTION SEARCH CHANNEL Select 4 or 8 channels PLAY Select the file that you want to play in the search list click PLAY button or double click the file that you want to playback directly PLAY TOGETHER Select the search date start time end time and the channels that you want to playback click PLAY button to pl...

Page 22: ... the play control is effective only for current channel if the video is played in select mode 3 According to time synchronization playback mode the system will automatically skip the periods which all channels have no video 4 The progress can be located through the mouse Note The volume can be controlled through VOL and VOL in playback mode 3 4 3 File Backup Menu FILE BACKUP Figure 3 8 File backup...

Page 23: ... only removes the backup file from the list and does not delete the file from the system CLR ALL Remove all the backup files of the list box This operation only removes the backup file from the list and does not delete the file from the system BACKUP Backup all the files in the list box to the specified backup device Please confirm the backup device has enough space for the files to be backed up A...

Page 24: ... a kind of format Channel number year month day NOTE During the backup process the figures at the bottom of the dialog box will display real time progress CHAPTER 4 Menu Operation 4 1 Menu Preview Main Menu Submenu Remark PLAY BACK Main menu Video search and playback Search operations type channel and time results will display in the list N normal video recording A alarm video recording M motion v...

Page 25: ... dynamic detection external alarm etc The record plan can be carried out during a week with each day divided into four periods PTZ Settings for PTZ agreements and communication parameters NETWORK Settings for network address PPPoE port and DDNS ALARM Settings for type of sensor alarm video channels alarm output and corresponding parameters DETECTION Settings for sensitivity and detection zone for ...

Page 26: ...ction of the functions that require maintenance upgrade system software VGA ADJUST Regulations of the VGA and audio output parameters ADVANCE RESTORE According to the selection the users can set the whole or part of the parameters back to default but not including the user account FILE BACKUP Backup designated video files to the backup device EXIT Cancellation of the current user and the next oper...

Page 27: ...n Menu Figure 4 1 Figure 4 1 The main menu has nine functions including playback system info system setup recording control hard disk alarm control advance file files backup and exit Explication Click on the check box to select an operation ...

Page 28: ...H 264 Network DVR 28 4 2 1 System Information Menu SYSTEM INFO Figure 4 2 System information includes hard disk log version and net user Figure 4 2 ...

Page 29: ...H 264 Network DVR 29 1 Disk information Menu SYSTEM INFO DISK INFORMATION Figure 4 3 Display the types socket positions total capacity and usable capacity of the hard disk connected to device Figure 4 3 ...

Page 30: ... LOG TYPE Select all system set data management warning video operation user management START TIME Set the start point of a log inquiry END TIME Set the end point of a log inquiry After setting the log period and type press the search button the user can see the log information in the list that meets the conditions using the button and the user can advance pages Figure 4 4 ...

Page 31: ...H 264 Network DVR 31 3 Version information Menu SYSTEM INFO VERSION INFORMATION Figure 4 5 Displays the version of system software hardware and MCU including release date Figure 4 5 ...

Page 32: ...H 264 Network DVR 32 4 Online user Menu SYSTEM INFO NET USER Figure 4 6 View information about online users including account name and IP address Figure 4 6 ...

Page 33: ...t Menu HARD DISK Figure 4 7 Displays the current hard disk attributes type total capacity usable capacity Click an activity button to complete operations such as format hard drive Figure 4 7 Note Stop recording before formatting the hard disk ...

Page 34: ...the mouse to display the pop up menu then choose PTZ control or press PTZ key to enter the control menu Figure 5 1 Figure 5 2 Figure 5 1 PTZ Position the mouse in the top bottom left and right quadrant within the current camera image a corresponding direction arrow will display Left click the mouse to pan tilt the camera in that direction Pan tilt direction can also be controlled through the panel...

Page 35: ...automatically adjust the camera iris Backlight Compensation Select to allow the system to provide backlight compensation when the subject contrast is too high Note This operation function needs to connect with the front end device and match the protocol Aux Input the auxiliary output number to be controlled Click ON or OFF key Preset Adjust the direction and angle of camera as desired Input a pres...

Page 36: ...f the option has already been selected the option will be Close monitor 5 4 Alarm Control 5 4 1 Alarm Control Main menu Alarm Control Figure 5 4 Automatic Arm and disarm according to the alarm schedule setup Manual High priority level after choosing manual arm all channels will be in arm status Clear Disarm no response to the alarm input Output Whether the alarm input is agreed when alarm happen A...

Page 37: ...H 264 Network DVR 37 Figure 5 4 5 4 2 Clear Alarm Right click the mouse to display the pop up shortcut menu then choose Clear Alarm as the following picture Figure 5 5 Figure 5 5 ...

Page 38: ...t But not disarm may trigger the alarm again Icons explication All alarm input channels are at arm status One or several alarm input channels are at arm status One or several alarm input triggers the alarm click this icon and pop up Clear alarm window to display the alarm information ...

Page 39: ...APTER 6 System Setup Main Menu System Setup Figure6 1 System Setup includes System Encoding Recording PTZ Network Alarm Detection Display Note A user can only enter into the system setup with appropriate authority Figure 6 1 ...

Page 40: ...at options including year month day month date year day month year etc Separator Three options For example choose To display the date as 2009 02 25 Time Format 24 or 12 hour Language Language options DVR ID When one remote controls several DVRs set the remote controller ID the same as DVR to control Video System Video system PAL or NTSC restart the DVR after change Note Stop recording prior to set...

Page 41: ...ty best very good good general poor low Stream Rate Encode rate options the higher the rate the higher the picture quality and the more HDD space is used Frame Rate 1 25 seconds PAL or 1 30 seconds NTSC continuously adjustable Time Display Title Display Superimpose time and channel label over each camera Click Setup and drag the time or channel title into position Copy setting to the following cha...

Page 42: ...and 120 minutes Channel Schedule Drop down menus Select the corresponding channel number and day to schedule recording Click ALL to choose all channels Alarm Pre Record Saves the five seconds of video prior to the alarm event to the file Time Section Select the scheduled record time for each channel there are four time options The time scope is 00 00 24 00 After each channel parameter is set press...

Page 43: ...Protocol Choose the corresponding control protocol Pelco_P Pelco_D the default is Pelco_D Baud Rate Choose baud rate of the corresponding speed dome camera the range is 1200 115200 the default is 9600 Data Bit The range is 5 to 8 the default is 8 Stop Bit Select 1 or 2 the default is 1 Check The range is none odd parity even parity default is none Flow Control The range is None Xon Xoff the hardwa...

Page 44: ...he user need Requires a system restart HTTP port Default is 80 set according to the user need Requires a system restart If the port has been changed it must display the selected HTTP port such as http 192 168 0 117 1234 DDNS Enable Pass the dynamic domain name analysis server Supports free dynamic domain name service Register account at www dyndds org PPPoE Auto Link Input ISP provided PPPoE user ...

Page 45: ...ddress Example yourname gmail com Sender User Name Enter the sender user name should correspond to the mail address Example yourname Sender Password Enter the password used to send e mail Confirm Password Confirm the password used to send e mail Receiver Address Enter the address to which an e mail notification will be sent Example yourname gmail com An e mail will be sent when an alarm recording ...

Page 46: ...nt to be recorded prior to reset SEQ Display Set to trigger the DVR to sequence through the connected cameras on the display when an alarm triggers the system Recording Channel Set to trigger the DVR to display the camera that corresponds to the alarm input Schedule Set the time and days for scheduled recording DEV Output Set to link an alarm output during scheduled record OSD Output The screen wi...

Page 47: ...tem features drag and drop simplicity to setting the dynamic range of the motion detection region Press and hold the left mouse button to set up the detection regions Press and hold the right button of mouse to clear detection region Press the save button after setting the detection regions 6 7 1 Video Detection By analyzing the video voltage levels the system will activate the alarm when it detec...

Page 48: ...record when video motion is detected during scheduled time periods SENSITIVITY Set the sensitivity level to trigger video motion alarm recording Copy The Current Settings To The Following Allows you to copy the recording schedule to other DVR channels Dynamic Inspection Area Select SETTING and then enter to display the motion detection zone grid 192 cells 16X12 To select the detection zones hold t...

Page 49: ...Select the detection settings Video loss ALARM DELAY Set corresponding delay time 5 255 seconds the system will alert after an alarm activity ALARM DEV OUT Set the alarm output that corresponds to a video channel SCHEDULE Set the schedule time for the system to respond to video loss notifications Copy The Current Settings To The Following Allows you to copy the setting from one channel to another ...

Page 50: ...nels to set shelter alarm feedback ALARM TYPE Select the detection settings shelter detection ALARM DELAY Set corresponding delay time 5 255 seconds the system will alert after an alarm activity ALARM DEV OUT Set the alarm output that corresponds to a video channel SCHEDULE Set the schedule time for the system to respond to video loss notifications Copy The Current Settings To The Following Allows...

Page 51: ...r the menu window SEQ Display Set eh system to switch sequentially through the system inputs TIME Set the dwell time for the camera to display from 5s to 120s Page Turns Select Full Page Quad Page or 9 Win Page Full page will sequence through each page one channel after another Quad Page will switch between cameras 1 4 and 5 8 8 Channel DVR only 9 Win Page will display all eight cameras with one b...

Page 52: ...64 Network DVR 52 CHAPTER 7 System Management Main Menu Advance to show sub menu including user accounts exception handling system maintenance output regulation restoring the default Figure 7 1 Figure 7 1 ...

Page 53: ...passwords and permissions Lower level users can modify their password and can view allowed video channels To change a password select the user name to be changed enter the current password Enter the new password and confirm the new password Press the save button to confirm the password change Figure 7 3 Figure 7 4 Note the current user password to enter the menu refers to the user login password a...

Page 54: ...H 264 Network DVR 54 Figure 7 3 Figure 7 4 ...

Page 55: ... eneable multiple users to log in under the same user name Figure 7 5 Figure 7 5 There are three default users admin user default the three users can not be deleted Admin user has the highest authority level and may carry out all operations The default user is the lowest with the least permissions in the system If no users have been defined the system will default to this account Users that log on...

Page 56: ...elect abnormal operation hard disk is full hard disk error or network disconnection Buzzer Alarm Select if there will be a buzzer alert to an abnormal operation Alarm Output Set an alarm output in conjunction with abnormal operation Note The user can view detailed log record of abnormal operation ...

Page 57: ... Software Upgrade Figure 7 7 Figure 7 7 System Upgrade Select the source device holding the upgrade software from the dropdown menu and click upgrade Auto Reboot Select auto reboot and set the occurrence and time as necessary Click confirm to complete the action ...

Page 58: ... 58 7 4 Output Adjustment Main Menu Advance VGA Adjust Figure 7 8 Manage the VGA output adjustment region color brightness and resolution 7 8 Note restore Local display select this to reset the output to factory default ...

Page 59: ...re Figure 7 9 You can set multiple options back to factory default Select the sub system to reset and click confirm to complete the operation Note Menu Color Language Date Time format system IP address User account won t revert to factory default Figure 7 9 ...

Page 60: ...Management 8 1 Remote Settings 8 1 1 Network Security Settings Set internet security level before install ActiveX 1 Open Browser i e Internet Explorer select Tools Internet options 2 In the dialog box that appears select the Security tab Figure 8 1 Figure 8 1 ...

Page 61: ...et Explorer asks if you want to install the ActiveX control 9 Automatic prompting for ActiveX controls 9 Binary and script behaviors 9 Download unsigned ActiveX controls 9 Download signed ActiveX controls 9 Only allow approved domains to use ActiveX without prompt 9 Run ActiveX controls and plug ins The above categories will be Enable which is very important Note When installing ActiveX disable fi...

Page 62: ... the network or on the internet Following is the information needed to set up the DVR for network access 1 Right Click My Network Places on your PC desktop From the pop up menu click on Properties open Network Connections 2 Double click to open Local Area Connection Figure 8 3 Figure 8 3 ...

Page 63: ...H 264 Network DVR 63 3 Click Properties to open local area connection properties Figure 8 4 Figure 8 4 ...

Page 64: ...ng may be different than shown 6 Copy the corresponding subnet mask and default gateway to the DVR see section 6 5 Network Settings The IP address must not be the same as the PC this will result in a network conflict In this example the DVR IP address should be 192 168 0 X in which X is not 40 or 1 including the other is using the IP address and can not be more than 255 the subnet mask is 255 255 ...

Page 65: ...will automatically download and install ActiveX control Figure 8 6 Figure 8 6 If the DVR ActiveX have a new version is available IE browser will automatically update if prompted Please update ActiveX to ensure that the client ActiveX are not in use or else fail to update 8 2 Remote Connection 8 2 1 Connection Download ActiveX is complete run ActiveX and the login panel will automatically pop up Fi...

Page 66: ...ork port number must be set the same Username Password default username is admin Auto Start all channels upon successful log into the server through the wan network connection so as not to enable From Window X to start preview From which window to start preview After succeed in login or logout server exit dialog Click to automatically close the dialog box Delete Select to delete the corresponding ...

Page 67: ...k DVR 67 If login fails an error message will pop up Check the IP address port number user name password Figure 8 8 Figure 8 8 After a successful login the PC will display the DVR screen below Figure 8 9 Figure 8 9 ...

Page 68: ...lay Enlarge the displayed video to fill the screen Start audio Enable audio monitoring Stop Preview Stop the current channel preview Start Record Save real time video to the PC Speed Speed up the video motion in playback mode Speed Slow the video motion in playback mode Capture Capture the current window picture and save to the PC Search Search video files including local search and remote search ...

Page 69: ...H 264 Network DVR 69 8 3 Control Click Control on right side of the DVR screen to open the Select Server dialog box Figure 8 11 Figure 8 11 Select the required Server to display on the PC screen ...

Page 70: ... 8 3 1 Common Control Reboot server Select to reboot a DVR server Shut down server Select to close a DVR server Remote Upgrade Select to begin a system software upgrade Upgrade will start if files are available Figure 8 12 ...

Page 71: ...H 264 Network DVR 71 8 3 2 Video Remote adjustment of DVR parameters brightness color contrast saturation Figure 8 13 ...

Page 72: ...emotely access the DVR system log Figure 8 15 Figure 8 15 Start time End time Select the time period to review Log type Select the type of log to review system log configuration log data log alarm log recording log and user management ...

Page 73: ...load video files to archive on the PC network drive of burn to CD DVD Figure 8 16 Figure 8 16 Channel Select the channel to search Record type Select the recording type all recording alarm recording motion recording Start time End time Select the time period to review ...

Page 74: ...H 264 Network DVR 74 8 4 Setting Click Setup on the right side of the DVR screen to open the Setting menu Figure 8 17 ...

Page 75: ...ically oaver older video files Capture Setting Directory Select the location to store screen images on the local PC Reserve Disk Space The system will not use this space on the local PC Download Setting Directory Select the location to store downloaded files on the local PC Reserve Disk Space The system will not use this space on the local PC Stream Transport Protocol Select UDP for general LAN an...

Page 76: ...ote preview DVR images in real time Select an unused window and click the Start button the video channel will pop up and shows that it in preview mode To save real time video to a specified directory on the PC or a network storage drive click the RECORD button To stop recording click the STOP button 8 5 2 Playback The user can playback the locally recorded files as well as remotely play back files...

Page 77: ...r button to set camera preset points and adjust the camera 8 6 2 Lens Control Figure 8 21 Focus Controls the focus ring of the camera Auxiliary May be assigned to a needed function on the camera Zoom Adjust the focal length of the lens Zoom in more detail less field of view Zoom out more field of view less detail Iris Open the aperature in lower light conditions or close the aperature in bright li...

Page 78: ...etwork DVR 78 8 6 3 Window View Modes Figure 8 22 8 settings Single camera sequencing four camera view six camera view with one primary image eight camera view with one primary image or eight small camera view ...

Page 79: ...upported currently S60 Nokia N73 N71 N75 N76 N77 N78 N79 N80 N81 N82 N85 N86 N91 N92 N93 N93i N95 N96 Mobile phone client software installation 1 First download software from the CD to your mobile phone and then install the software Click DVR icon shown below picture 9 1 to enter software 9 1 ...

Page 80: ...number Click Login icon to open surveillance software interface 3 Upon opening the software interface follow the mobile phone function button presentation below Note Before use this software please firstly select corresponding GPRS server from mobile phone server list ...

Page 81: ...error can cause the mother board to check the hard disk repeatedly Host restart repeatedly 1 Please check the host power supply if multiple hard disks are connected there may be inadequate power 2 Unplug the network cable and check if the system operates run normally a serious network failure may cause the host to restart repeatedly Hanging video 1 Check the hard disk connection or replace a defec...

Page 82: ...heck the status of the monitor power on brightness 2 Check the monitor video cable Video ripple or tearing 1 Check for shorts in the video cables 2 Check for interference from other AC devices on the video cable 3 Check the video with a newer monitor Video color distortion 1 Check whether the video input output setting is right 2 Check whether the connection is right When using a PC monitor there ...

Page 83: ...tors may lead to the appearance of Mosaic during the playback ActiveX of client can t be updated automatically 1 Whether the IP address accessing server is correct 2 Whether the settings of browser are correct refer to 8 1 2 3 Please turn off the window if it s open 4 Support the ActiveX control has some problems of compatibility please use Microsoft Internet Explorer to access server ...

Page 84: ... FPS NTSC CIF 200 FPS PAL 240 FPS NTSC CIF 400 FPS PAL 480 FPS NTSC Audio Input BNC 4 BNC 8 RCA 1 Audio Output RCA 1 Audio Codec ADPCM Alarm Input 4CH 8CH NO Alarm Output 1CH 2CH NO Recording Modes Manual Schedule Motion Alarm Triplex Record Playback Network Network Interface RJ45 10M 100M PTZ Control Enable set up the preset and use the mouse to move or scale the picture Communication Interface R...

Page 85: ...ut limitation any N O or N C contact NC terminal of alarm detector connect to DVR alarm input ALARM If the user wants to attach a detector such as smoke detector external power must be used The external power should share the same ground with the DVR if the device is supply by external power ...

Page 86: ...H 264 Network DVR 86 Appendix C Alarm Output Interface Instruction 4CH switch alarm output the user can use N O or N C contacts The external alarm device must use external power ...