Grandstream Networks GVR3550 User Manual
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Grandstream Networks GVR3550 User Manual

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Grandstream Networks, Inc.
GVR3550 Network Video Recorder
www.grandstream.cn

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Summary of Contents for Grandstream Networks GVR3550

  • Page 1 Grandstream Networks, Inc. GVR3550 Network Video Recorder www.grandstream.cn...

  • Page 2: Table Of Contents

    CONNECT HDMI MONITOR(TBD) ....................18 CONNECT VGA MONITOR ......................18 CONNECT ALARM DEVICE ......................18 EXTERNAL INTERCOM DEVICE (TBD) ..................18 GET TO KNOW THE GVR3550 ................19 SOFTWARE SPECIFICATIONS ......................... 19 HARDWARE SPECIFICATIONS ........................ 20 IR REMOTE CONTROL OPERATIONS ..................... 21 USB MOUSE AND KEYBOARD .........................
  • Page 3 MANUAL UPDATE ............................ 69 FACTORY RESET ....................70 RESET VIA LOCAL GUI ..........................70 RESET VIA WEB PAGE ..........................70 RESET VIA BUTTON ..........................70 EXPERIENCING GVR3550 ..................71 APPENDIX ........................ 71 FAQs ................................71 MAINTENANCE ............................75 RECORD TIME CALCULATION ........................ 75 Grandstream Networks, Inc.
  • Page 4 Figure 23 : GVR3550 Preview Page Shortcut Button ..............32 Figure 24 : GVR3550 Record Playback Page ..................32 Figure 25 : GVR3550 Record Playback - Record Status Toolbar ..........33 Figure 26 : GVR3550 Record Playback Page- Search by Tag ............34 Figure 27 : GVR3550 Tag Management Page ...................34 Figure 28 : GVR3550 Record Playback Toolbar ................34...
  • Page 5 GVR3550 USER MANUAL Figure 36 : GVR3550 Add New Record Plan Page .................37 Figure 37 : GVR3550 Add New Record Plan Page---Duplicate Time Interval .......38 Figure 38 : GVR3550 Record Plan Display Page ................38 Figure 39 : GVR3550 Record Policy Configuration Page .............38 Figure 40 : GVR3550 Channel Config Page ..................39...
  • Page 6 Figure 88 : TFTP Server Directory Settings ..................67 Figure 89 : Confirm Modification ......................68 Figure 90 : GVR3550 Remote Manual Upgrade ................69 Figure 91 : GVR3550 Factory Reset on Local GUI Page ..............70 Figure 92 : GVR3550 Factory Rest on Local Web Page ..............70 Grandstream Networks, Inc.
  • Page 7 Table 2 : GVR3550 Hardware Specifications ...................21 Table 3 : GVR3550 Soft Keyboard Specifications ................24 Table 4 : GVR3550 Preview Channel Status Specifications ............26 Table 5 : GVR3550 Preview Page Specifications ................27 Table 6 : GVR3550 Abnormal Alarm Specifications ...............27 Table 7 : GVR3550 PTZ Control Specifications ................29...

  • Page 8: Chngee Log

    GVR3550 USER MANUAL CHNGEE LOG Only major new features or major document of the GVR3550 updates are listed here. Minor updates for corrections or editing are not documented here. FIRMWARE VERSION 1.0.0.33  Snapshots update. FIRMWARE VERSION 1.0.0.33  This is the initial version.

  • Page 9: Welcome

    This user manual is designed to help you to understand how to configure and manage the GVR3550 including advanced settings and operating, such as alarm settings and record settings. In order to help users to configure and manage GVR3550, the manual also introduce its configuration and update procedures in details.

  • Page 10: Safety Compliance

    GVR3550 USER MANUAL SAFETY COMPLIANCE These instructions are intended to assist users with the operation of the GVR3550 and to instruct on how to avoid dangerous situations or damage to the device. Warning: Serious injury or death may be caused if any of the warnings below are neglected.

  • Page 11: Warranty

    GVR3550 USER MANUAL WARRANTY If the GVR3550 was purchased from a reseller, please contact the company where the device was purchased for replacement, repair or refund. If the device was purchased directly from Grandstream, please contact our technical support team for a RMA (Return Materials Authorization) number before the product is returned.

  • Page 12: Install Gvr3550

    GVR3550 USER MANUAL INSTALL GVR3550 EQUIPMENT PACKAGE CONTENTS The GXV3550 package contains:  One(1) Main Case  One(1) 12V Power Adaptor  One(1) Power Cord  One(1) Ethernet Cable  One(1) Remote Control(No Battery )  Sixteen (16)Screws  Four (4) SATA HD ...
  • Page 13 GVR3550 USER MANUAL GVR3550 Figure 1: Front Panel Power indicator Power indicator Network Indicator When the network is abnormal or the GVR has no access to network, the indicator doesn’t flicker when alarm; the indicator turns red when the network connection is normal and flickers green when there is a network data transmission.

  • Page 14: Figure 2 : Gvr3550 Back Panel Specifications

    Switch to the default button Enter menu Switch between checkbox and ON/OFF button Pause/Restore auto patrol in the auto patrol preview mode Figure 2: GVR3550 Back Panel Specifications 1. Power Input Interface Power interface, input 12V DC. Used to reboot device or reset factory 2.

  • Page 15: Device Connection

    14. FAN: Used for heat dissipation DEVICE CONNECTION The GVR3550 contains no HDD with packaging, users need to check the device and install HDD when use it the first time. INSTALLING HDD We suggest to use the recommended models by Grandstream( 7200 RPM HDD and above), the PC HDD is not recommended.

  • Page 16: Route Connection

    Figure 3: GVR3550 HDD Installation Procedures NOTE:  HDD does not support hot plug. When the GVR3550 is running, plug the HDD will result in the HDD read and write data errors or unable to identify. Grandstream will take no responsibility for the damage.

  • Page 17: Network Connection

    2. Install the cables and connect to the display device interface. 3. Connect the mouse, keyboard, alarm input and output devices (optional). 4. Power on the related devices(GVR3550, display device, alarm, etc.) after connecting to the power cable. 5. The GVR3550 is about to power up and the indicators flickers.

  • Page 18: External Usb Device

    NOTE:  The voltage of the USB interface on the front panel of the GVR3550 is a little higher than the one on the the rear panel, it is suggested that the USB interface on the rear panel connect to USB mouse and keyboard while the one on the front panel connect to USB storage devices.

  • Page 19: Connect Hdmi Monitor(Tbd)

    CONNECT HDMI MONITOR(TBD) Connect one end of the HDMI cable to the port on the rear panel of the GVR3550, and the other end to the corresponding port of the HDMI monitor. Once powered on, a splash screen appears on the monitor.

  • Page 20: Get To Know The Gvr3550

    GVR3550 USER MANUAL GET TO KNOW THE GVR3550 SOFTWARE SPECIFICATIONS Name Specifications Video Record Supports synchronous 24 channel 720p (with 1280x720 resolution) record or 6 channel 1080p (with 1920x1080 resolution) record Record Rate Supports a maximum of 48 Mbps record rate...

  • Page 21: Hardware Specifications

    Security Proto Supports HTTPS, 802.1x, SSH Maintenance Supports manage device via the System Log, Remote Network, SSH and GSurf Pro Table 1: GVR3550 Software Specifications HARDWARE SPECIFICATIONS Name Specifications Interface 1 HDMI interface, 1VGA interface, 1 RJ45 gigabit adaptive Ethernet interface, 2 RCA audio input &output interfaces...

  • Page 22: Ir Remote Control Operations

    GVR3550 USER MANUAL Table 2: GVR3550 Hardware Specifications IR REMOTE CONTROL OPERATIONS Figure 8: GVR3550 IR Remote Control REC Button: Manual start/stop record.This button works in concert with the direction buttons in the record control menu to select the channel to record...
  • Page 23 The correct way to use IR remote control: Batteries must be installed before operation. Please aim the remote control at the IR receiver on the GVR3550 then make operations. If the GVR3550 receives the control’s command, you can use the control to manipulate the GVR3550. If failed, please check whether the following...

  • Page 24: Usb Mouse And Keyboard

    If the remote still can’t function properly beyond the above situations, please change a remote and try again, or contact the device provider. USB MOUSE AND KEYBOARD When the USB mouse is plugged into the GVR3550, users could make the following operations with the mouse: Single click the left mouse: Enter a functional menu.

  • Page 25: Table 3 : Gvr3550 Soft Keyboard Specifications

    Switch Caps Lock Sigquit Switch to Numbers & Symbols Switch to alphabet Space Switch to Chinese Input Method Enter Table Backspace GVR3550 Soft Keyboard Specifications Grandstream Networks, Inc. GVR3550 User Manual Page 24 of 76 Firmware Version 1.0.0.0 Last Updated: 10/2013...

  • Page 26: Using The Wizard（Tbd

    In this chapter, we take using the mouse as an example. USING THE WIZARD（TBD） When the unit is enabled, users could use the wizard for basic configuration when once start the GVR3550 to make it work properly. 1. Check the display resolution. Please check the highest resolution the connected monitor supports before selecting the resolution, make sure the highest resolution you select is no higher than the parameters the monitor supports.

  • Page 27: Preview Status

    Display icon indicates channel connection failed connection failed Table 4: GVR3550 Preview Channel Status Specifications On the preview page, the record and alarm status of each channel could be distinguished by the tag at the top right corner of each channel.

  • Page 28: Basic Preview Operation

    Record The monitoring channel is in record mode. Table 5: GVR3550 Preview Page Specifications A dialog box will pop up in the center screen to prompt the users if there is an abnormal alarm, as shown in figure 15 below, the prompt box would disappear in 3 seconds.

  • Page 29: Image Configuration

    GVR3550 Image Configuration Page NOTE:  The GVR3550 only supports PTZ control with ONVIF Protocol, the IP camera should be properly connected while the PTZ device should be configured. Please make sure the RS-485 cable between the PTZ decoder and the IP camera connected correctly.

  • Page 30: Use Ptz

    Bring up pattern setting and operation panel below the screen when PTZ is set as contrail. Exit Click to exit the PTZ Control panel directly. Control Table 7: GVR3550 PTZ Control Specifications Grandstream Networks, Inc. GVR3550 User Manual Page 29 of 76 Firmware Version 1.0.0.0...

  • Page 31: Figure 19 : Gvr3550 Ptz Control Page---Preset

    Users could choose PTZ control as preset then make operations like add/delete/edit preset on the control panel below. The procedures are shown in figure 19. Figure 19: GVR3550 PTZ Control Page---Preset 1. Adjust the remote camera position via the PTZ direction control. 2. Click on below the preset control panel to add a new preset.

  • Page 32: Right-Click

    GVR3550 USER MANUAL Figure 21: GVR3550 PTZ Control Page---Contrail  Set PTZ control to contrail.  Select the contrail name you want to set.  Click the “Start Record” button to adjust the contrail of the remote camera via using the PZT control wheel ...

  • Page 33: Shortcut Button

    23. Users can enter the Video Playback page or the main menu as well as login /logout or reboot the unit. Figure 23: GVR3550 Preview Page Shortcut Button LOCAL PLAYBACK Click right mouse to select Video Playback to enter the playback page, as shown in figure 24 below.Users could make operations like Query, Playback,Tagging, Download, Clip, Locked Record, ect.

  • Page 34: Figure 25 : Gvr3550 Record Playback - Record Status Toolbar

    (Except for "Select All").  Select All: Display all record types  IO Alarm: Use the color to tag GVR3550 IO alarm record file  Use the color to tag remote IO alarm(IPC) record file Alarm(IPC) ...

  • Page 35: Record Playback

     When the HDD is full, the corresponding tag will be deleted. RECORD PLAYBACK GVR3550 support synchronous 4 channel playback, users can specify the date as well as the channel to play, or make operations like fast forward,Full Screen/Cancel Full Screen, Lock Record, Tagging, Download t one single screen or one video being played in full screen.

  • Page 36: Figure 30 : Gvr3550 Tagging Management

    Click the button to bring up the Tagging setting page as shown in figure 32. Input the tag name in the “Tag Name ”input box and then click the “Save” button. Figure 30: GVR3550 Tagging Management Click a screen to initialize single screen play Click to enter 4 screen Click the button to enter the Record Lock page as shown in figure 33.

  • Page 37: Main Menu

     Please do not disconnect the USB device when downloading the clippings files or it may cause record download failure or error. MAIN MENU Right click the mouse to enter the GVR3550 System Configuration page, see figure 33. Figure 33: GVR3550 Main Menu Page The configuration items are varied according to different user permissions.

  • Page 38: Figure 34 : Gvr3550 Record Channel Settings

    Users could add new record plan on the corresponding setting page and manage the plan of each channel via manage the plan list. See figure 35. Figure 35: GVR3550 Record Plan Settings Page 1. Click the “New Plan” button to bring up the following editing page. See figure 36.users could set the plan name you familiar with.

  • Page 39: Figure 37 : Gvr3550 Add New Record Plan Page---Duplicate Time Interval

    2. Set record interval on the weekly basis: at least set one interval and users could set up to eight time intervals at maximum. Intervals could be duplicated to other weeks. The copy page is shown in figure 37. Figure 37: GVR3550 Add New Record Plan Page---Duplicate Time Interval Users could edit, modify, delete and apply the plan in the list. Click to display the record plan details as shown in figure 38.

  • Page 40: Channel Management

    Password: NOTE:  When adding the searched remote device, the username and password with which the GVR3550 trying to connect to the remote device are all default ones, If the username and password of the remote device are not accord with the default ones of GVR3550, connection may fail. Please manually modify the username and password of the remote device.

  • Page 41: Figure 42 : Gvr3550 Encoding Config

    GVR3550 USER MANUAL password of the GVR3550 connecting to the remote device are respectively: admin, admin; or username and password are both empty. ENCODING CONFIG Encoding Config page is as shown in figure 42 below, users can set the Channel Name and define where and when to display it .

  • Page 42: Figure 43 : Gvr3550 Ipc Event Config

    Time Set arming time period Config: Click on “Arming Time Config” to bring out the page below. Users could set IPC arming time period. Figure 44: GVR3550 IPC Arming Time Settings Page  Detection Area Users could set detection area to IPC with Motion Detection, Missing Object Detection and Foreign Object Detection function.

  • Page 43: Alarm Configuration

    Channels to other channels ALARM CONFIGURATION The GVR3550 supports up to 16 channel alarm input and 2 channel alarm output. Please refer to the chapter “Connect Alarm Device ”to connect the output and input device. Grandstream Networks, Inc. GVR3550 User Manual Page 42 of 76 Firmware Version 1.0.0.0...

  • Page 44: Figure 45 : Gvr3550 Io Alarm Config

    Abnormal Alarm Config includes Disconnection Alarm,HDD Empty Alarm, HDD Full Alarm, HDD Error Alarm and IP Conflict Alarm.See figure 47 below, users can set the alarm actions after selecting the corresponding alarms. Figure 47: GVR3550 Abnormal Alarm Settings Page Alarm when detecting no cable access  Disconnection Grandstream Networks, Inc.

  • Page 45: Network Settings

    Basic Settings page is shown in figure 48 below, users can choose to obtain IPv4 address automatically , manually set static IP address or use PPPoE. The GVR3550 is available only when network setup is correct. Figure 48: GVR3550 Network Settings---...

  • Page 46: Figure 49 : Gvr3550 Advanced Settings

    GVR3550 Advanced Settings ENABLE PPPoE Enable DDNS to access GVR3550 via the domain name if already enabled PPPoE connection to the internet, with this way can effectively solve the problem that access GVR with dynamic IP. The GVR3550 supports 3322, NOIP, DynDNS.Select the proper DNS type and input the correct domain name, username and password to complete the GVR3550 DDNS settings after enabled DDNS.

  • Page 47: Figure 51 : Gvr3550 Server Settings

    GVR3550 USER MANUAL When the port status displays “Active”, it indicates the successful connection of the GVR3550 and the router, the parameters have taken effect. ENABLE MULTICAST GROUP When access the GVR3550 and apply live view via remote network, users will unable to preview if multiaccess exceeded the maximum bandwidth the GVR3550 allows.

  • Page 48: Status

    4. Set send interval, one alarm would send only one Email within the interval. 5. Set Email subject and template. The GVR3550 is equipped with default ones, users could also customize them by reference to the template rule.

  • Page 49: Figure 52 : Gvr3550 System Information

    Total Free Space. As shown in the figure 54 below. Figure 54: GVR3550 HDD INFO DEVICE STATUS Device status is shown in figure 55 below. Figure 55: GVR3550 Device Status Page Real-time display the GVR3550 CPU usage.  CPU Usage: Real-time display the GVR3550 memory usage.  Memory Usage: Grandstream Networks, Inc.

  • Page 50: System Settings

     Obtain Obtain time automatically from the NTP server Automatically:  Synchronize IPC Synchronize the time on the GVR3550 with the one on the connected PC time:  Time Zone: Select the time zone of the GVR3550 manually  Manual set time: Input the system time of the GVR3550 manually ...

  • Page 51: Figure 57 : Gvr3550 Display Settings

    DISPLAY SETTINGS Users could set Screen Resolution, Brightness, Contrast, Saturation, Hue on the connected display device as shown below. Figure 57: GVR3550 Display Settings Page Set the default screen resolution among Auto, HDMI and VGA. Users could set the ...

  • Page 52: Figure 59 : Gvr3550 Local View Control--- Channel Application

    GVR3550 USER MANUAL The connected channel name will be displayed on the left of the screen, as shown in figure 59. Click on to enter the channels page, as shown in figure 58 below, check before the channel to map it to the screen.

  • Page 53: Figure 61 : Gvr3550 Property Editing

    “Write” or “Read”is optional. The HDD will not save record if set to “Read”. Property: USER MANAGEMENT The GVR3550 could be added up to 30 administrator users . Users can be operator or normal user. As shown in figure 62 below. Figure 62: GVR3550...

  • Page 54: Figure 64 : Gvr3550 Editing User Info

    The normal user only has permissions to playback record and channel privilege on remote preview. Tick to set. See figure 65. Figure 65: GVR3550 Editing Normal User Info Page The operator user has permissions to set channel privilege and part of configuration privilege.Tick to set.See figure 66.

  • Page 55: Maintenance

    Input the address and click on “Start” to initiate the test, Click on “Stop” Test(ping):Destin to end it. ation Address Diagnosis Display the diagnosis result of the GVR3550 and the destination IP Display address. Path file Display the model of external storage device, available for choose if saving there are multiple models.

  • Page 56: Table 10: Gvr3550 Network Diagnosis Specifications

    Table 10: GVR3550 Network Diagnosis Specifications HDD DETECTION The GVR3550 provides S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) Detection and Bad Sector Detection. Users could check the running status of HDD via HDD detection. S.M.A.R.T detection provides a variety of detections on HDD heads, temperature, material of disk surface, internal circuit as well as timely monitoring and forecasting the underlying problems of HDD that may occur.

  • Page 57: Figure 68 : Gvr3550 Hdd Bad Sector Detection

    Status Tag HDD status with various colors:Good, Damaged, Shield. Display: SYSTEM LOG Users could consult the running state of GVR3550 via System logs. See figure 69 below. Figure 69: GVR3550 System Log Page  Start Time: System log search start time ...

  • Page 58: Figure 70 : Gvr3550 Record Backup

    ADVANCED SYSTEM SETTINGS BACKUP GVR3550 supports quick backup and search backup. Users could choose the channel and set the record time for quick backup, and also could set the record type, file type and record time to search the needed record file for backup.

  • Page 59: Figure 73 : Gvr3550 Search Backup

    GVR3550. Please refer to “The Tested Backup Device List” on Grandstream website.  If the file format of USB device is incorrect, please format the device then try again. GVR3550 supports USB device with FAT 32 format.

  • Page 60: Figure 74 : Gvr3550 Import/Export Configuration File

    74. Figure 74: GVR3550 Import/Export Configuration File WARNING! Restart GVR3550 for the change to take effect after importing configuration file. The original file would be overwritten by the new one, Please use this function with caution. ...

  • Page 61: Logout

    Figure 77: GVR3550 Factory Reset Page WARNING! The data on the GVR3550 will be erased if enable Factory Reset. Please take caution to use this function. LOGOUT GVR3550 would display preview status after logout. Please input username/password to login for authentication when entering the menu again.

  • Page 62: Web Management

    3. Open a web browser and enter the GVR3550 IP address in the address bar, i.g.: http://192.168.10.101. (The default port No.:80) 4. Press the “Enter” button to enter the GVR3550 Web Login page, input the username and password in the prompt box. The default administrator username and password are: admin, admin. Please modify the password after login without delay.

  • Page 63: Web Page Introduction

    Users could make operations like Live View, Record Playback, Record Download and System Configuration after login the GVR3550 remote Web page. See figure 79 below. Users can switch among live View, Record Playback and Settings page via Menu Settings, as well as set remote Web page language and logout.

  • Page 64: Figure 82 : Gvr3550 Web Page---Channel Preview

    Configurat ion: The info of each channel would be displayed on the upper left corner of the channel screen on the preview page as shown in figure 82 below. Figure 82: GVR3550 Web Page---Channel Preview Name Specifications Channel Display the channel name , it would not be displayed if not Name configured.

  • Page 65: Playback

    Please refer to the chapter “Local Playback” to view Remote Web record playback operation.It should be noted that the record which could be searched on the Web page is the one stored in the GVR3550 HDD, snapshots and clips could only saved in PC, users could not make local GUI operation. The playback page on the Web page is as shown in figure 83 below.

  • Page 66: Firmware Update

    GVR3550 USER MANUAL Figure 85: GVR3550 Web Page- Maintenance Menu FIRMWARE UPDATE The GVR3550 supports software upgrade via TFTP server or HTTP/HTTPS server. Please go to Advanced System Settings page to configure upgrade settings. The GVR3550 supports the following ways to update:...

  • Page 67: Configuring Tftp Server

    GVR3550 USER MANUAL Grandstream Firmware server address: http://www.grandstream.com/support/firmware Users could also download the free TFTP server or HTTP/HTTPS server by visiting the link below to download free Windows TFTP server： http://www.solarwinds.com/register/?program=52&c=70150000000CcH2&INTCMP=DLIndexA_FreeTools _freeTFTPserver Users could download free HTTP server fromhttp://httpd.apache.org/, or use Microsoft IIS network server CONFIGURING TFTP SERVER In this chapter, we take 3CDaemon TFTP server as an example.

  • Page 68: Figure 87 : Tftp Dialog

    GVR3550 USER MANUAL Figure 87: TFTP Dialog Set the directory to store the loaded file in “Upload/Download ”section under TFTP Configuration tab. as shown in figure 88 below. Figure 88: TFTP Server Directory Settings Select the file storage directory and click “Apply” to bring up the dialog box as shown in figure 89 below.

  • Page 69: Configuring Http Server

    GVR3550 USER MANUAL Figure 89: Confirm Modification Click “Yes” to confirm modification. Click “Confirm” to close the configuration dialog. NOTE:  The file uploaded to the server directory should be the .bin file after decompression. CONFIGURING HTTP SERVER In this chapter, we take using Apache HTTP Server 2.2 server in windows XP to introduce the procedures of configuring HTTP server.

  • Page 70: Update With Tftp Server

    The procedures to manual update with downloaded firmware file: 1. Set the update mode to “Manual Upload ” on the Advanced System Settings page of the GVR3550. 2. Click on the “File” button in the “firmware path ” entry to select firmware file.

  • Page 71: Factory Reset

    Figure 92: GVR3550 Factory Rest on Local Web Page RESET VIA BUTTON There is a Reset button on the back panel of the GVR3550 as shown in figure 2, long press the button for more than 10 seconds to reboot and restore to factory reset .

  • Page 72: Experiencing Gvr3550

    System upgrade errors Damaged HDD or HDD cables problem. Front panel error Damaged mainboard 2. The GVR3550 would reboot automatically or crashes frequently in a few minutes after startup Unstable input power or low voltage. No enough power Incorrect jumpers.

  • Page 73: Grandstream Networks, Inc

    The record has not yet played 6. Dazzling monitor when search local record Wrong data reading, small code stream, full screen mosaic when playback, it will be back to normal after restarting the GVR3550 in general. Damaged HDD cable or jumpers. HDD error Hardware failure 7.

  • Page 74: Grandstream Networks, Inc

    Unstable network IP address confliction MAC address confliction Unstable connection of network card on PC or on the GVR3550 12. USB backup error Too much resource utilization of CPU, please stop recording then back up. Data volume exceeds backup capacity would cause backup error...

  • Page 75: Grandstream Networks, Inc

    Check whether the port No. of remote IPC is correct Check whether the username/password of remote IPC is correct Check whether the internet connection of remote GVR3550 is correct 19. Incomplete display interface Confirm the current resolution, check the resolution the LCD supports. If the resolution is 1920*1080, the LCD should support 1920*1080 resolution.

  • Page 76: Maintenance

    HDD space requires assessing the file size recorded per hour in each channel according to stream. i.g.: The record in one single channel takes up 200 m/h HDD space per hour, use the GVR3550 to record with synchronous 12 channels. Record Time（hour）=（2*4*1024*1024）/【200（M/H）*12】=3495.25（Hour）(145.6（Day）...

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