background image

 

46 

 

Audio 

Gain 

Audio volume of a selected video input (-64 – 
24 dB Default: 0 dB). 

Delay 

Audio delay of a selected video input (0 – 340 
ms Default: 0 ms). 

Crosspoint 

Input 1-8 
Off 

Assign the selected input source to an input 
button (Default is Input 1). 

Audio XPT 

Input 1-8 
External 
Follow 

Associate the audio component of a selected 
input source to an input button (Default is 
Follow).  

Outputs 

Output 

SDI 1 

Input 1 – 8 
CLN PVW (Clean PVW) 
CLN PGM (Clean PGM) 
PG + DSK 
PVW 
PGM 
MultiV (Multi view) 
(SDI / HDMI default: None) 

SDI 2 
SDI 3 
SDI 4 
HDMI 1 
HDMI 2 

HDMI 3 

HDMI 

YUV444 
YUV422 
RGB444 

Multiviewer 

AutoNum 

Auto number input labels  (ON/OFF (Default)

Label Inf 

Input label is followed by information which 
describes the input as still, live or frozen image  
(ON/OFF (Default)). 

Please note that the label content cannot 
be modified.

 

Trns Lab 

Turn the background of the label from a solid 
colour to transparent  (ON/OFF (Default)). 

MV1 

Multiview Layout Modes 
Preset 1 – 9 
Default: Preset 1 

L: PGM / R: PVW 
L: PVW / R: PGM 

Default: L: PVW / R: PGM 

Tally Mode 

Audio Mixer 

Selection of tally light mode (Default: Normal) 

Normal 

GPI Out 

ON/OFF 

GPI Enable/Disable (Default: OFF) 

Mode 

Level/Pulse (Default: Pulse) 

Width 

Pulse width (Default: 1) 

GPI-out assignment  

Input 1-8 (Default: Input 1) 

Delay 

0-99 (Default: 0) 

Audio 

Audio 

Mode 

Turns ON/OFF embedded component at SDI-
out and HDMI-out. 

Src 

Selection of audio out source: 
External (Default) / Follow / Input 1-8 

PGM Audio 

Mode 

Audio transition style: X Fade / V Fade 
(Default)
 

Gain 

Audio volume of a selected video input 
Range: -60 – 24 (dB) with default = 0 dB 

Delay 

Audio delay of a selected video input 
Range: 0 – 340 ms with default = 0 ms 

Analog Out 

Src 

Selection of audio out source: 
PGM Audio (Default) / Follow / Input 1-8 

Summary of Contents for SE-4000

Page 1: ...1 SE 4000 4K DIGITAL VIDEO SWITCHER Instruction Manual...

Page 2: ...Main Unit 15 Local Connection 15 Network Connection 17 Connecting the Video and Audio Input Devices 20 When linking via tally connection 21 Connecting the Video and Audio Output Devices 21 2 2 NETWOR...

Page 3: ...Keyer Control 53 Key Source 55 Mask 55 5 3 CHROMA 56 Keyer 56 Key Source 57 Key Tie 57 CK Setup 60 Mask 61 5 4 P IN P 62 P in P 62 Position 63 Crop 64 Border 64 Shade Matte Dual Color Border 66 5 5 I...

Page 4: ...6 Clear Ani Logo 86 Delete Ani Logo 87 Positioning 87 5 9 SETUP 87 Standard 87 Genlock 88 Keyboard 89 Auto Save 89 Factory Def 90 Language 90 Network 91 Software 92 CHAPTER 6 BASIC OPERATION 93 6 1 VI...

Page 5: ...DIX 4 FIRMWARE UPDATE 122 Main Unit 122 Control Panel 122 APPENDIX 5 FREQUENTLY ASKED QUESTIONS 124 APPENDIX 6 DIMENSIONS WEIGHT 125 APPENDIX 7 SPECIFICATIONS 126 SERVICE AND SUPPORT 128 Disclaimer of...

Page 6: ...ovided 7 This product should only be operated from the type of power source indicated on the marking label of the AC adapter If you are not sure of the type of power available consult your Datavideo d...

Page 7: ...wn the product warranty period begins on the thirtieth day after shipment from a Datavideo office All non Datavideo manufactured products product without Datavideo logo have only one year warranty fro...

Page 8: ...o a designated collection point for the recycling of waste electrical and electronic equipment The separate collection and recycling of your waste equipment at the time of disposal will help to conser...

Page 9: ...PIP DVE Wipe Generator still stores and logo insertion The Crosspoint assignment XPT provides alternative I O combinations by allowing you to reroute physical I O ports to the corresponding control pa...

Page 10: ...main unit has a grille for airflow cooling fans Please do not block or cover this grille as the unit may overheat This grille should also be kept free of dust The front panel can be removed by removin...

Page 11: ...to this port and start the firmware upgrade process on the GUI Note See Firmware Update section for details DC IN Connect the supplied 12 V PSU to this 4 PIN XLR socket Pin 1 GND Pin 2 NC Pin 3 NC Pi...

Page 12: ...atic transition CUT A hard cut between video sources Transition Type Selection Selection of Clip MIX or WIPE transition effect SHIFT Press the SHIFT button to activate the Source row for switching cha...

Page 13: ...ny other component make sure that it is properly grounded by connecting this terminal to an appropriate point When connecting use the socket and be sure to use wire with a cross sectional area of at l...

Page 14: ...switcher s main unit and control panel and then connect the AC adapter to a power supply To start first locate and turn ON the respective power switches at the rear of the control panel as well as th...

Page 15: ...he control panel You can establish point to point or network connection between the two devices Local Connection Use a standard Ethernet cable to connect DVIP ports of the switcher s main unit and con...

Page 16: ...16 Tap SCAN on the main menu to search for the main unit to connect...

Page 17: ...tcher after the control panel has been connected to the main unit successfully Network Connection Connect DVIP ports of the main unit and the control panel to a router The router s IP address should b...

Page 18: ...the router should be assigned IPs that are in the same network segment After establishing network connection between the main unit and the control panel simply turn on the respective power switches Af...

Page 19: ...19 Tap SCAN on the main menu to search for available main units...

Page 20: ...control panel has been connected to the selected main unit successfully Connecting the Video and Audio Input Devices Connect cameras computers and other video input devices to the video input connecto...

Page 21: ...mercially available tally box The tally pinout information can be found in Appendix 1 Connecting the Video and Audio Output Devices Connect projectors large displays and other video output devices to...

Page 22: ...el are assigned IPs that are in the same network segment See the manual for more information about using the router Note Subnetting your network can be advanced to some please consult your IT speciali...

Page 23: ...am image This confirms that the analogue XLR audio input is being received and embedded to the selected Program output s SE 4000 Multi view is supplied from the HDMI connection s on the rear panel and...

Page 24: ...tally indication box will be shown around the sources selected for Program OUT and these selected sources should be displayed at the switcher s selected Program output s A Green tally indication box...

Page 25: ...settings are listed as follows User memory Wipe effects Picture in picture Audio AUX Still pictures Keyer Cross Point Tap the gear icon at the top right corner to open the main menu of the graphical...

Page 26: ...ed user memory slot Swap Follow the steps outlined below to swap the contents of two user memory slots 1 First tap a user memory slot 2 Tap the Swap button 3 Tap another user memory slot 4 Lastly conf...

Page 27: ...configure the wipe borders Enable the border first then adjust its hue softness and width 3 3 PIP In the P in P tab you will be allowed to select how you would like to position the PIP window on the P...

Page 28: ...Tap the Edit button to select an icon To restore the defaults simply tap the Reset button PIP Setting On the PIP Setting page you can select a video source for the PIP window and set the window positi...

Page 29: ...able options in the Source pane 3 5 Still On the Still page you can assign different still images to the input channels Follow the steps below to make the selection 1 First select an input channel the...

Page 30: ...till image pane layout You can either display three 1 x 3 or eight 2 x 4 thumbnails at the same time 3 6 Keyer On the Keyer page you can configure Keyers 1 4 and DSK 1 2 The available keyer options ar...

Page 31: ...disabled the luma keyer removes the black background when the Invert button is enabled the luma keyer removes the white background DSK 1 2 are usually set to Linear keying mode which is chosen for pro...

Page 32: ...input channel then tap Video XPT or Audio XPT to set the respective sources In Audio XPT if FOL is selected the audio will enter Audio follow Video mode i e playback of the audio of the output video w...

Page 33: ...33...

Page 34: ...the network method An example connection is illustrated in the diagram below Please first download the software to your PC or laptop from the product page https www datavideo com tw product SE 3200 be...

Page 35: ...owing connection status and transition time settings User User memory import Still Still image import Clip Clip file import Logo Still logo import Ani Logo Animated logo import Setup Software settings...

Page 36: ...m files saved on the switcher To import mem files from your PC click User then enter a memory location Click Import User to browse your hard drive and select the user memory file that you would like t...

Page 37: ...select the image file that you would like to import See section 5 8 Still and section 6 3 Managing Still Pictures for more details 4 4 Clip Click the Clip button to view all the clips saved on the sw...

Page 38: ...the switcher To import still logo image files from your PC click Logo then enter a memory location Click Import Logo to browse your hard drive and select the logo image file that you would like to imp...

Page 39: ...tion for more details 4 7 Setup On the Setup page you will be able to view the software version network connect status firmware version installed and the available space on the switcher The Setup page...

Page 40: ...40...

Page 41: ...n is pressed you will be prompted on the 5 inch LCD screen to confirm the shutdown Select YES and the last device settings will be automatically saved before it s turned off Main Sub Options and Param...

Page 42: ...ameter for transparency of the overall foreground key image ranging from 0 to 100 Default 0 Lift Parameter for dark black areas of the overall foreground key image ranging from 100 to 100 Default 0 Ga...

Page 43: ...tup CK Auto Calculation of the best Hue Luma values for the current Keyer source Hue Parameter for color of the chroma key ranging from 0 to 359 Default 0 Luma Parameter for luma of the chroma key ran...

Page 44: ...Quality Normal Fine Position X Horizontal PIP Position 100 100 Default 0 Y Vertical PIP Position 100 100 Default 0 Size PIP Size 0 100 Default 0 Crop Left Left Edge of the Crop 0 100 Default 0 Right R...

Page 45: ...to set the mode Default Input 1 Input 1 8 Mode Three input modes are Live Freeze and Still Default is Live Type HDMI SDI Auto Channels 3 4 7 and 8 are SDI HDMI shared input channels Depending on the...

Page 46: ...ult Please note that the label content cannot be modified Trns Lab Turn the background of the label from a solid colour to transparent ON OFF Default MV1 Multiview Layout Modes Preset 1 9 Default Pres...

Page 47: ...ill Still Number 0 999 Delete Button Tap Delete to remove the still picture from the selected still number Files Clip Load Clip Clip Memory Locations 0 999 Load Button Tap Load to load the selected cl...

Page 48: ...utomatically saves the last settings before the machine is shut down once turned ON auto save also occurs upon every Still Load Factory Def Factory Default Factory Default Reset loads the default conf...

Page 49: ...ons For example if the M E is set to a value of 50 then the transition will take effect over a period of 50 frames or roughly 2 seconds When the AUTO button is pressed the transition will take the cur...

Page 50: ...the Matte view by pressing the BG button of the Program and Preview button rows The color of the Matte is configurable in this option by adjusting Luma Saturation and Hue For Hue value Red is 0 Green...

Page 51: ...s allowed to select the Wipe style and configure the wipe s border softness and width Wipe Selection of a WIPE effect from a set of 32 WIPE transition effects Soft A low value results in a solid edge...

Page 52: ...vertical position Horizontal Position X Positive value moves the wipe center to the right Negative value moves the wipe center to the left Zero value positions the wipe center at the screen center Ver...

Page 53: ...d Key sources An example of a Linear DSK self setup could be using an HDMI input from a Windows laptop running Datavideo s CG 250 Character Generator software see Character Generator for more informat...

Page 54: ...background image will be showing only through the transparent areas Gain adjusts the light white areas of the key image Increasing the value of Gain will make light areas of the key image more solid...

Page 55: ...e option of the Start menu Input 1 8 Image source loaded to channel buttons 1 8 Black Black Screen Select the fill source from the list below Bars Color bars Matte A configurable color screen and the...

Page 56: ...keyer mask Bottom Bottom sets the bottom edge of the keyer mask 5 3 Chroma The Chroma Keyer removes the green background of the key image If Chroma is selected in Keyer this option menu allows you to...

Page 57: ...configurable color screen and the Matte value can be set in Matte option of the Start menu Input 1 8 Image source loaded to channel buttons 1 8 Black Black Screen Key Tie Key tie is a feature that al...

Page 58: ...1 First in the Keyer menu select the keyer and set it to Chroma We used Key 1 in this example 2 Open the Chroma menu and select Key 1 Select a foreground image from the Key Source list the foreground...

Page 59: ...enabled Use the input button that is assigned the background image to open the key tie image 4 After key tie is configured to open the key tie image simply press the corresponding input button of the...

Page 60: ...y calculates the best Hue Luma values for the current Keyer source After applying the CK Auto effect the result can be fine tuned by adjusting the Luma and Hue values Hue This parameter adjusts the co...

Page 61: ...formance of the chroma key in dark or black areas Apply more Key Background if the dark areas are becoming too transparent Hi Light Hi light boosts the foreground key in high luminance area Lo Light L...

Page 62: ...articular keyer Note The keyer image source can only be selected in Key Source of the Keyer menu P in P In P in P the user will be allowed to select a keyer that has been set to the PIP window Please...

Page 63: ...the vertical position and Size is the PIP screen size X Value Positive value position the P in P window to the right Negative value position the P in P window to the left Zero value Position the P in...

Page 64: ...p The PIP image crop can be adjusted by modifying the following parameters Left Adjusts the position of the left edge of the PIP image Right Adjusts the position of the right edge of the PIP image Siz...

Page 65: ...Circle Circle Shaded Rounded Rounded Shaded See Shade Matte for dual color border setting See Direction for border shadow setting To turn the Border off simply select the option Border OFF In additio...

Page 66: ...solid border edge and a high value gives a soft diffused border Opac adjusts the transparency of the border ranging from 0 to 100 Direction sets the direction of the light source with the value of par...

Page 67: ...tely 240 For secondary colors Yellow is approximately 60 Cyan is approximately 180 and Violet is approximately 300 The Sat or Saturation value refers to the intensity of the color selected in Hue As t...

Page 68: ...this value moves the boundary line such that the Shade Matte occupies more of the overall border width When this value is 0 the Shade Matte occupies all of the border width 5 5 Inputs This feature al...

Page 69: ...ns at the rear panel specify the input interface accordingly Mode of Operation The second mode option allows you to select the mode of operation for the selected input Zoom Mode This mode allows you t...

Page 70: ...crosspoint function allows the user to shuffle the contents of Inputs 1 8 without changing the physical connections at the back of the machine In the example below the input 1 video source is assigned...

Page 71: ...e the audio component of any input source to any of the input buttons 1 8 thus cross assigning audio input channels to program preview row buttons Available options are listed as follows Input 1 8 Ext...

Page 72: ...tput settings such as video output tally mode and GPI connection Outputs In general the SE 4000 offers 7 output ports SDI 1 4 HDMI 1 3 and all 7 ports can be configured to output one of the following...

Page 73: ...cannot be modified Trans Lab turns ON OFF the Label Background Transparency Once enabled the background of the label should turn from an opaque black to a transparent one MV1 The SE 4000 Multi view mo...

Page 74: ...is the Program window This option allows you to switch their positions Tally Mode Tally output port generally sends two tally signals to each channel In Datavideo products Red indicates On Air and Gr...

Page 75: ...Red as soon as the transition is triggered Audio Mixer If Audio Mixer mode is selected tally lights of all video sources enabled on PGM view will be turned ON Red While transition is in progress tall...

Page 76: ...99 5 7 Audio In the Audio menu you will be able to start and shut off the embedded audio of SDI and HDMI videos Audio External audio source can only enter the SE 4000 via the analog XLR input port fo...

Page 77: ...e audio source If External is selected the external audio i e audio from AUDIO IN port will be played If Follow is selected the audio will enter Audio follow Video mode i e playback of the audio of th...

Page 78: ...g Out You are also allowed to select a source of audio of your preference and output the selected audio via Audio OUT Open the GUI menu and select Audio Analog Out Src where you may select a source of...

Page 79: ...he switcher All five file types will be discussed in the following sub sections User Mems In this option the user is allowed to load previously saved settings and save the currently configured setting...

Page 80: ...ages The following are destinations to which the still image can be loaded Inputs 1 8 Tap Load to load the still image to the chosen destination Image Preview is available Thumbnail Pictures are the s...

Page 81: ...ne the source of the still image first The available sources are listed below Inputs 1 8 To complete the save the user can simply tap Save after determining the memory location Grab Still Grab Still f...

Page 82: ...y location simply select a memory location and tap Delete then Yes to confirm the delete Loading still images The SE 4000 allows the user to load still images saved on the machine to the Multiview scr...

Page 83: ...or more still functions such as file import from the PC or laptop see Section 6 3 Managing Still Pictures Clip The CLIP or Stinger Transition Effect is currently under development Logo Logo is a still...

Page 84: ...y location from which the still logo image is loaded The system memory can store up to 1000 still logo images Select Load to load the logo to the chosen destination Logo 1 Logo 2 Note To import custom...

Page 85: ...t half of the screen and a negative value indicates that the logo is in the left half of the screen Y A positive value indicates that the logo is in the top half of the screen and a negative value ind...

Page 86: ...memory can store up to 1000 logo animations Select Load to load the animated logo to the chosen destination Logo 1 Logo 2 Note To import custom logo animations from your computer see chapter 6 6 Enab...

Page 87: ...d logo is in the top half of the screen and a negative value indicates that the animated logo is in the bottom half of the screen 5 9 Setup In the Setup menu the user can change the resolution reset t...

Page 88: ...d Note When the image is 50 Hz the audio follows EBU standard and when the image is 59 94 60 Hz the audio follows SMPTE standard Genlock Genlock is an external sync setting Ref IN OUT port receives ex...

Page 89: ...n 5 10 seconds after exiting the GUI menu Do not shut down your machine during this time At the next boot the machine will automatically load the last saved settings Note that Still Load also triggers...

Page 90: ...Standard and then select Save Setup to save the new resolution setting Factory Def Factory Default Tap Restore to reset the machine to factory default settings Reset Input Names Tap Reset to reset th...

Page 91: ...r s main unit and control panel respectively DHCP The available network connection modes are DHCP and Static The default connection mode is Static DHCP turned off The default IP addresses of the main...

Page 92: ...Off IP Address 192 168 100 101 SE 4000 and 192 168 100 102 CTL Network Mask 255 255 255 0 Once all settings are entered tap Save to save all changes made and reboot the device to apply the new networ...

Page 93: ...etween sources can be performed on this row by pressing the source number required for the next shot The Preview row of buttons is typically used to select the switcher s Preview or Next source output...

Page 94: ...to another set of alternative video sources 5 Push the AUX button again to exit Black and Background MATTE View The BLK BG button allows the user to switch between a black background and a matte colo...

Page 95: ...ly Program View Before Transition Transition in Progress MIX Effect Program View After Transition WIPE Button The WIPE button is selected when a 2D wipe transition between the selected Program and Pre...

Page 96: ...activate the MIX WIPE or Stinger transition with the background image video When on backlit red the background image video will be included in any chosen transition from Preview to Program When this...

Page 97: ...e This value allows the inside and outside edge softness of the Wipe Border to be controlled A low value makes a sharp or hard wipe edge A large value results in a softer or diffused wipe edge Width V...

Page 98: ...between that still image of the Frame Store and the live video input connected to that same video channel How to choose live video input or Frame Store 1 First press and hold down the FS button The Pr...

Page 99: ...o on both the Preview and Program Out Follow the steps outlined below to load the desired still logo from memory 1 Open the still logo sub menu in the Files menu 2 Tap Load Logo On the page shown abov...

Page 100: ...from the PC The Switcher Image Import Export software SwitcherImageImEx_vx x x msi allows the user to import still logos from the PC to a designated memory slot of the switcher The software installat...

Page 101: ...open the file browser window and browse to the file that you would like to import 4 Select the logo file that you would like to import Note that the aspect ratio is limited to 480x1080 5 Check on the...

Page 102: ...tio of 480x270 In this section we will show you how to import animated logo to the switcher load animated logo on the switcher as well as enabling the loaded animated logo on Preview and Program Out N...

Page 103: ...f the Ani Logo menu Selecting Clear Logo clears the logo buffer Selection of Delete Logo removes the animated logo from the selected memory slot Importing Animated Logo from the PC The Switcher Image...

Page 104: ...number Click Import Ani Logo to open the file browser window and browse to the file that you would like to import 4 Select the animated logo file at the zeroth location so upon file import the program...

Page 105: ...animated logo has been imported successfully 6 After successfully importing the animated logo into the switcher you will then be able to start loading the new animated logo to the buffer To enable th...

Page 106: ...pes of logos Standard logo max size of 480 x 1080 1 still frame Animated logo max size of 480 x 270 dynamic made up of 120 frames The Background video layer is the normal video layer black screen colo...

Page 107: ...void them appearing on the program output incorrectly Most broadcast networks have guidelines and advice on the use of video images music logos and on screen text so it is best to check beforehand whe...

Page 108: ...r KEYER keys relate to activating Picture In Picture images on the Program outputs The lower KEYER keys relate to activating Picture In Picture images on the Multi view or Preview outputs Before activ...

Page 109: ...d crop For descriptions of the parameters refer to the section on P In P for more details Assigning a video source to a PIP window using shortcut keys In addition to assigning a video source to a PIP...

Page 110: ...lows to insert the text image Note If the text image is dark choose a white background if the text image consists primarily of bright colors choose a black background 1 Connect the laptop to the switc...

Page 111: ...djusts the transparency of the overall foreground image which is the text in this example Increasing the value of Opacity will make the overall key image less transparent Invert On Off sets the luma k...

Page 112: ...of the SE 4000 is easy to use Typical Blue and Green screen studios can be quickly incorporated into an SE 4000 production The following is a quick overview of Chroma Key basics The camera backdrop a...

Page 113: ...white reference card or a sheet of white paper Focus the camera on the reference card and light it evenly using the main light Set the camera s iris aperture so that the card is correctly exposed Use...

Page 114: ...ete connect the camera shooting the speaker on a green backdrop to the SDI Input 1 at the rear of the switcher To configure the settings that will be used for chroma keying press the MENU button on yo...

Page 115: ...fore the port to which the camera is connected 4 Adjust the left right top and bottom values of Mask to set the chroma key range according to the green or blue backdrop size 5 Open the Chroma menu to...

Page 116: ...screen value will be around 120 Blue screen value will be around 240 Luma The Luma value relates to how bright or dark the selected key colour or hue is K Range Key Range Key Range sets the range of h...

Page 117: ...the foreground key in high luminance area Lo Light Lo light boosts the foreground key in low luminance area Bg Supp Turn ON Background Suppress removes the Luma Brightness of the background from the f...

Page 118: ...output Tally output of input video Program 8 9 Program 9 Open collector output Tally output of input video Program 9 10 Program 10 Open collector output Tally output of input video Program 10 11 Prog...

Page 119: ...119...

Page 120: ...r selected event Power is supplied by the SE 4000 and is less than 5V DC This GPI socket can also be used as a GPO socket to trigger record or playback events with other equipment such as the Datavide...

Page 121: ...RS 422 if necessary The table below provides the RS 232 serial port pinout on the device end SE 4000 Note that the RS 232 port is a 9 pin D sub female connector Pin No Signal Pin 1 GND Pin 2 TXD RS 2...

Page 122: ...products Switchers SE 4000 Downloads Latest Firmware 2 Extract the contents of the compressed file to the Desktop 3 Insert a USB thumb drive into the PC or laptop and format the drive to FAT or FAT32...

Page 123: ...inch LCD screen 7 Tap Software Upgrade 8 You will be prompted to confirm the upgrade tap Yes to proceed 9 You will see Upgrade in red while the control panel is being upgraded 10 When Upgrade turns gr...

Page 124: ...cribes problems that you may encounter while using the SE 4000 If you have any questions please refer to related sections and follow all suggested solutions If problem still exists please contact your...

Page 125: ...125 Appendix 6 Dimensions Weight Main Unit Control Unit Weight 7 1 kg All measurements in millimeters mm...

Page 126: ...al Interface 4 via HDMI Video Output 4 x 12G SDI 3 x HDMI assignable Multiview Program Preview Program DSK Clean Program Clean Preview Input 1 12 Built in Multi View Monitoring Out HDMI SDI assignable...

Page 127: ...ly Output 1 x D sub 25pin Dual Color PC Remote Control DVIP Ethernet Built in Audio Mixer Yes Firmware Update Ethernet Special Features 5 inch touchscreen display Chassis 2 units 2RU Rack Mount Mainfr...

Page 128: ...128 Service and Support www datavideo com product SE 4000 Mar 03 2023 Version E1 Datavideo Technologies Co Ltd All rights reserved 2020...

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