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Prestel 4K-PTZ812HTU3 User Manual

4k ptz camera

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Prestel 4K-PTZ812HTU3
4K PTZ Camera
USER MANUAL

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Summary of Contents for Prestel 4K-PTZ812HTU3

  • Page 1 Prestel 4K-PTZ812HTU3 4K PTZ Camera USER MANUAL...
  • Page 2 4K PTZ Camera  User Manual Preface This manual is to ensure that the user can use the product properly and avoid danger while operating. Before using this product, please read the user manual carefully and keep it properly for future reference. Overview This manual is about 4K PTZ camera operation.
  • Page 3 4K PTZ Camera  User Manual Attention This manual introduces functions, installations and operations for this product in details. Please read this manual carefully before installation and use. Precautions This product can only be used in the specified conditions in order to avoid any damage to the camera: 1) Do not expose the product to rain or moisture.
  • Page 4 4K PTZ Camera  User Manual 4) Do not power on before completely installation. Improper operations may damage the product structure and result in mechanical failure. Please note the following tips. Do not move the camera by grabbing the head. Move the camera by holding the bottom with one or both hands.one or bo one or both hands.
  • Page 5 4K PTZ Camera  User Manual Content Quick Start ......................... 1 1.1 Interface ........................ 1 1.2 Power-on Self-Test ....................1 1.2.1 Power on ....................... 1 1.2.2 Self-Test ......................2 1.3 Video Output ......................2 1.3.1 Network Output ..................... 2 1.3.2 HDMI Output ....................2 1.3.3 USB3.0 Output ....................
  • Page 6 4K PTZ Camera  User Manual 3.2.2 Remote Control Usage .................. 20 3.3 Menu Setting ....................... 22 3.3.1 Main Menu ....................22 3.3.2 Monocular Tracking ..................23 3.3.3 System Setting ..................... 23 3.3.4 Camera Parameter Setting ................24 3.3.5 P/T/Z ......................28 3.3.6 Video Format ....................
  • Page 7 4K PTZ Camera  User Manual 6.2 Troubleshooting ....................65...
  • Page 8 4K PTZ Camera  User Manual Quick Start 1.1 Interface Figure1-1 Interface Interface 1. Lens 7. HDbaseT Jack 13. RS232 Output 8. HDMI Jack 14. RS422/RS485 Jack 2. Base 3. Receiving Light 9. USB3.0 15. Network Jack 16. DC12V Power Socket 10.
  • Page 9 4K PTZ Camera  User Manual 1.2.2 Self-Test After power on, the receiver light will start flashing and camera will do a brief pan-tilt tour and return to the home position. When light stop flashing, the self-test is finished.  ...
  • Page 10 4K PTZ Camera  User Manual 1.4 Bracket  Bracket can only be wall mounted or upside down mounted on template and concrete wall, but can not be installed on plasterboard. 1.4.1 Steps of Wall Mount...
  • Page 11 4K PTZ Camera  User Manual...
  • Page 12 4K PTZ Camera  User Manual Figure1-2 Steps of Wall Mount 1.4.2 Steps of Ceiling Mount Figure1-3 Steps of Ceiling Mount...
  • Page 13 4K PTZ Camera  User Manual Product Overview 2.1 Product Overview 2.1.1 Product Dimension Figure2-1 Product Dimension 2.1.2 Accessory When you unpack your package, check that all the supplied accessories are included: Table2-1 Supplied Accessory Power adapter USB3.0 Cable Supplied User manual...
  • Page 14 4K PTZ Camera  User Manual RS232 cable Plastic pad Wireless remote control Brackets for wall mounting Optional Brackets for ceiling mount 2.2 Product Feature This is a brand new UHD 4K camera. It has perfect functions, superior performance and rich video output interfaces; Featuring with advanced ISP processing algorithms, offering vivid and high resolution video with a strong sense of depth and fantastic color rendition.
  • Page 15 4K PTZ Camera  User Manual  Multiple Control Protocol: Support VISCA, PELCO-D, PELCO-P protocols; Support automatic identification protocols.  Quiet Pan / Tilt Movement: With high accuracy step driving motor, camera can pan / tilt extremely quiet and smooth. ...
  • Page 16 4K PTZ Camera  User Manual Secondary stream:YUY2/NV12: 1280 × 720/1024 × 576/800 × 600/800 × 448/640 × 360/640 × 480/480×270/320×180@30/25/20/15/10/5fps; MJPG/H264: 1920×1080/1600×896/1280×720/1024×576/960×540/800× 600/800×448/720×576/720×480/640×360/640×480/480× 270/352×288/320×240@30/25/20/15/10/5fps Horizontal:6.5°(N)~70.9°(W) Viewing Angle 3.9~46.8 mm ±5% Focal Length F1.6 ~ F2.8±5% Iris Value Digital Zoom Minimum 0.5Lux(F1.8, AGC ON) Illumination...
  • Page 17 4K PTZ Camera  User Manual HDMI, HDbaseT, LAN(Support POE), USB3.0, A-IN, RS232-IN, RS232-OUT, RS422(Compatible with RS 485), DC12V Power Video Interfaces Supply, Rotary DIP switch, Power Switch Video Output HDMI, HDbaseT, LAN, USB3.0 Video LAN:H.264, H.265 Compression USB 3.0:MJPG, H.264, YUY2, NV12 Format Audio Input Double track 3.5mm linear input;...
  • Page 18 4K PTZ Camera  User Manual Table2-3 PTZ Parameter PTZ Parameter -170°~+170° Pan Move -30° ~+90° ° Tilt Move 0.1° /s~60° /s Pan Speed Tilt Speed 0.1° /s~45° /s Preset Speed Pan: 60° /s, Tilt: 45° /s Preset Quantity Up to 255 preset (10 via remote control) Table2-4 Other Parameter Other Parameter...
  • Page 19 4K PTZ Camera  User Manual The longest tracking distance can reach 6-7 meters, which can Real-time Tracking Mode support the speaker to walk at a speed of 3-4 mph 4 tracking zones are available, which can be set within - Zone Tracking 170°~+170°in horizontal and -30°...
  • Page 20 4K PTZ Camera  User Manual 2.4.2 RS-232 1)RS-232 Diagram Connecting method to PC or controller Device WindowsDB-9 1.DTR 1.DCD 2.DSR 2.RXD 3.TXD 3.TXD 4.GND 4.DTR 5.RXD 5.GND 6.GND 6.DSR 7.IR OUT 7.RTS 8.NC 8.CTS 9.RI Figure2-3 RS-232 Diagram 2)RS-232 Mini-DIN 8-pin Terminal Port Definition...
  • Page 21 4K PTZ Camera  User Manual Table2-7 RS-232 Mini-DIN 8- pinTerminal Port Definition Terminal Definition Port Data Terminal Ready Data Set Ready Transmit Data System Ground Receive Data System Ground IR OUT IR Commander Signal IR No Connection 3)RS232(DB9) Terminal Port Definition Table2-8 RS232(DB9) Terminal Port Definition Terminal...
  • Page 22 4K PTZ Camera  User Manual Device Cascading Connection Method Device 1 Device 2 1.DTR 1.DTR 2.DSR 2.DSR 3.TXD 3.TXD 4.GND 4.GND 5.RXD 5.RXD 6.GND 6.GND 7.IR OUT 7.OPEN 8. NC 8.OPEN Figure2-4 VISCA Networking Diagram  This camera has RS232 Input/Output interface, you can cascade as above method 2.4.3 Rotary Dial Corresponding video format to 0-F rotary dial -----...
  • Page 23 4K PTZ Camera  User Manual  After changing the video system by rotating the dial code, it will take effect only after power off and restarting.  After turning the dial to 5-F, power off and restart, then the menu can display the video system.
  • Page 24 4K PTZ Camera  User Manual 3.2 Remote Control Remote control using instruction: There are wireless remote control and IR remote control for options. Please read the following content according to the actual remote control type. (This camera does not support wireless remote control) Steps for wireless remote control usage are as below, (IR remote control does not need code pairing) 1)Code Pairing...
  • Page 25 4K PTZ Camera  User Manual 3.2.1 IR Remote Control 1. Standby Key After 3S long press, the camera will step into standby mode. Long press 3S again, the camera will self-test again and back to HOME position. (Note: If power-on mode is turned on and Preset 0 is set, and there is no operation within 12s, it will automatically point to the specified preset position.
  • Page 26 4K PTZ Camera  User Manual 10. Menu Setting Open or close the OSD menu Enter / exit the OSD menu or return to the previous menu. 11. Camera IR Remote Control Address Setting 【*】+【#】+【F1】:Camera Address No.1 【*】+【#】+【F2】:Camera Address No. 2 【*】+【#】+【F3】:Camera Address No.
  • Page 27 4K PTZ Camera  User Manual 3.2.2 Remote Control Usage Finishing initialization, it can receive and execute the IR commands. Press the remote controller button, the indicator light is flashing; release the button, the indicator light stops flashing. Users can control the pan/tilt/zoom, setting and running preset positions via the IR remote controller.
  • Page 28 4K PTZ Camera  User Manual 1. Preset setting: to set a preset position, the users should press the “【SET PRESET】” key first and then press the number key 0-9 to set a relative preset, Note: 10 preset positions in total are available by remote controller.
  • Page 29 4K PTZ Camera  User Manual Press and hold the key, the action of focus will keep continue and stops as soon as the key is released. 6)Camera Remote Controller Address Setting 【*】+【#】+【F1】:Camera Address No.1 【*】+【#】+【F2】:Camera Address No. 2 【*】+【#】+【F3】:Camera Address No. 3 【*】+【#】+【F4】:Camera Address No.
  • Page 30 4K PTZ Camera  User Manual parameter Restore Factory Default: Select Yes or No to restore factory default. [↑↓]Select:Press[↑↓] to Select menu [← →]Revise:Press [← →] to revise parameter [Menu]Return: Press [Menu] [Home]Confirm: Press [Home] return confirm 3.3.2 Monocular Tracking Monocular Tracking ===============...
  • Page 31 4K PTZ Camera  User Manual PROTOCOL: VISCA/Pelco-/Pelco- Address:VISCA=1~7 Pelco-P = 1~255 D/Auto Pelco-D =1~255 : 2400/4800/9600/115200 Baudrate Visca Address Fix:On/Off :On/Off USB dual stream:On/Off Auto Flip 3.3.4 Camera Parameter Setting Move the pointer to the (CAMERA) in the Main Menu, click the【HOME】key and enter the (CAMERA) as follow CAMERA ================...
  • Page 32 4K PTZ Camera  User Manual EXPOSURE =============== Mode Auto Flicker 50Hz G.Limit [↑↓]Select [← →]Change Value [Menu]Back Mode : Auto, Manual, Shutter priority, Iris priority and Brightness priority. EV : On/Off (only available in auto mode) Compensation Level: -7~7 (only available in auto mode when EV is ON) BLC: ON/OFF for options (only available in auto mode) Anti-Flicker: OFF/50Hz/60Hz for options (only available in Auto/Iris priority/Brightness priority modes)
  • Page 33 4K PTZ Camera  User Manual COLOR ============== WB Mode Auto RG Tuning BG Tuning Saturation 100% AWB Sensitivity High [↑↓]Select[← →]Change Value [Menu]Back WB Mode: Auto, Manual, One Push, Specified color temperature Red Tuning: -10~10(only available in Auto mode) Blue Tuning: -10~10(only available in Auto mode) Red Gain: 0~255(only available in Manual mode) Blue Gain: 0~127(only available in Manual mode)
  • Page 34 4K PTZ Camera  User Manual Brightness: 0~100 Contrast: 0~100 Sharpness: 0~15 Horizontal Flip: On/Off Vertical Flip: On/Off B&W Mode: Color, black/white Gamma: Default, 0.45, 0.50, 0.55, 0.63 Digital Zoom: On/Off Low-Light Mode: Close/Open 4)Focus Move the pointer to the (FOCUS) in the Menu, click the【HOME】and enter the (FOCUS) as follow.
  • Page 35 4K PTZ Camera  User Manual NOISE REDUCTION ================ NR-2D NR-3D [↑↓]Select [← →]Change Value [Menu]Back Noise Reduction: Close, 1~8 3.3.5 P/T/Z Move the pointer to the (P/T/Z) in the Main Menu, click the【HOME】and enter the (P/T/Z) as follow P/T/Z ================...
  • Page 36 4K PTZ Camera  User Manual VIDEO FORMAT =============== 4KP30 4KP25 1080P30 1080P25 1080P29.97 [↑↓]Select [Menu]Back [Home]OK  Exit menu after modifying parameter to save it 3.3.7 Version Move the pointer to the (VERSION) in the Main Menu, click the【HOME】and enter the (VERSION) as follow VERSION ================...
  • Page 37 4K PTZ Camera  User Manual RESTORE DEFAULT ================ Restore Default? [← →]Change Value [↑↓]Select [Menu]Back [Home]OK Restore default: Yes/No ( after restoring default, the language, color, and video format won’t be restored)  If the address of former remoter is not 1 but another one from 2,3,4, the corresponding camera address will restore to 1 when all parameters or system parameters are restored.
  • Page 38 4K PTZ Camera  User Manual Network Connection 4.1 Connection Method Direct Connection:Direct connections via “cross-over” network cable Connection to LAN:Connections to LAN via patch cable to LAN wall jack or LAN switch  Please do not put the power and network cable in places where can be easily touched to prevent video quality lowered by unstable signal transmission due to poor contact of cables.
  • Page 39 4K PTZ Camera  User Manual Figure4-1 Network segment successfully added User can also to verify network connection as steps above mentioned after the finish of camera self-check. If IP is default, open DOS command window and input 192.168.5.163, then press Enter key. It will show message as below: which means network connection is normal.
  • Page 40 4K PTZ Camera  User Manual 4.2 Camera Web Interface 4.2.1 Web Login 1)Web Login After assigning an IP address to the camera, you can reach the Web Interface by typing in the camera’s IP address into a web browser. You can log in this interface as administrator or user.
  • Page 41 4K PTZ Camera  User Manual User name and default password: “user1” or “user2” You can control PTZ, zoom, focus, sound, zoom in, full screen and set run, and delete the preset position. Can preview and logout.  No configuration permission for normal user login. 4.2.3 Configuration Click Configuration to enter into the device parameters setting page There are the following options: audio configuration, video configuration, network...
  • Page 42 4K PTZ Camera  User Manual Input volume: set the input volume (default 4,1-10 optional) Note Click “SAVE”, it will display “Successfully saved. Restart the device to take effect”. 4.2.5 Video Configuration 1)Video Encoding Code Stream: Different video output mode setting, use different streams. (Main stream, secondary stream) Compression Format: Set the video compression format, save to take it effect (primary / secondary stream default: H.264,H.265 optional)
  • Page 43 4K PTZ Camera  User Manual Host Address: server IP addresses (default 192.168.5.11) Stream Name: choose a different stream name (live / av0,live / av1 optional). User: Set the user name. Password: Set the password. Click on the "Save" button to display the "Save successful" message, then settings take effect.
  • Page 44 4K PTZ Camera  User Manual Gain: Set gain, only valid in manual exposure mode and shutter priority (default 0, 0~15 optional) Dynamic Range: Set the dynamic range (default: 4, off, 1 to 8 optional). Shutter Speed: Set shutter speed value, valid in manual exposure mode and shutter priority.
  • Page 45 4K PTZ Camera  User Manual Sharpness: Set the sharpness value (default 5, 0-15 optional). Gamma: Gamma value setting (default 0.45, 0.50, 0.55, 0.63 optional). Black and white mode: Set black and white mode (default color, black and white optional) Horizontal flip: Set horizontal flip (shown when auto flip is off, default off, on optional) Vertical flip: Set vertical flip (shown when auto flip is off, default off, on optional)
  • Page 46 4K PTZ Camera  User Manual Secondary Stream Character Size: Set the character size of the display, the device will automatically restart after changed (default 48, 28-200 optional) Click “Save” button, “parameters are successfully saves” window pop-up, which means the setting take effect. 7)Video Output Output Format: Set the video output format, 4KP30, 4KP25, 1080P30, 1080P25, 1080P29.97 optional...
  • Page 47 4K PTZ Camera  User Manual DHCP: Enable or disable obtain IP automatically can be set. After saved, reboot the device to takes effect (default: OFF) IP Address: Set the IP address, after saved, reboot the device to takes effect (default 192.168.5.163).
  • Page 48 4K PTZ Camera  User Manual SRT Port: Set the SRT port (default 9000, 0-65535 optional) SRT Password: Set SRT password SRT Password Length: Set the SRT password length (default 0, 16, 24, 32 optional) Click the "Save" button, and the prompt message "Parameters saved successfully! It will take effect after restarting!"...
  • Page 49 4K PTZ Camera  User Manual Time setting: set time mode (optional synchronization with computer time, synchronization with NTP server, manual setting) Computer time: Display the computer time (only when the time setting method is synchronized with the computer time), click the "Synchronize" button Manual time setting: Click the calendar icon on the right to manually set the time (only the time setting method is manual setting) 3) User Management...
  • Page 50 4K PTZ Camera  User Manual  After the version upgrade is completed, you need to restore the factory default values a, restore the factory default through web configuration; b, restore the factory default value through the menu; c, remote control shortcut key *#6 restore factory default; Choose one of the above three methods, in which the IP account and password of “method a”...
  • Page 51 4K PTZ Camera  User Manual Regional Settings Steps (We take Region1 as an example): 1. On the PTZ Area, adjust image by clicking direction buttons to select one region. 2. After finishing region1 setting, click “Set” to complete the Region1 Tracking. Other region settings are same as region1 setting steps.
  • Page 52 4K PTZ Camera  User Manual Serial Port Communication Control In normal working state, you can control the camera through RS232/RS485 (VISCA IN) cable. The parameter of RS232 is as below: Baud rate: 2400/4800/9600/115200/second Start Bit:1 bit; Data Bit:8 bit; Stop Bit:1 bit;...
  • Page 53 4K PTZ Camera  User Manual Indicates that two sockets are already Command being used(executing two commands) and z0 60 03 FF Buffer Full the command could not be accepted when received. Returned when a command which is being executed in a socket specified by the Command z0 6y 04 FF(y: cancel command is canceled.
  • Page 54 4K PTZ Camera  User Manual Command Function Command Packet Remark Stop 8x 01 04 08 00 FF Far(Standard) 8x 01 04 08 02 FF Near(Standard) 8x 01 04 08 03 FF Far(Variable) 8x 01 04 08 2p FF p = 0(low) - 7(high) Near (Variable) 8x 01 04 08 3p FF 8x 01 04 48 0p 0q...
  • Page 55 4K PTZ Camera  User Manual Command Function Command Packet Remark 2700K 8x 01 04 35 0F FF 2800K 8x 01 04 35 10 FF 2900K 8x 01 04 35 11 FF 3000K 8x 01 04 35 01 FF 3100K 8x 01 04 35 12 FF 3200K 8x 01 04 35 13 FF...
  • Page 56 4K PTZ Camera  User Manual Command Function Command Packet Remark 5100K 8x 01 04 35 23 FF 5200K 8x 01 04 35 24 FF 5300K 8x 01 04 35 25 FF 5400K 8x 01 04 35 26 FF 5500K 8x 01 04 35 09 FF 5600K 8x 01 04 35 27 FF...
  • Page 57 4K PTZ Camera  User Manual Command Function Command Packet Remark One Push WB Trigger(Enabled during One Push Trigger 8x 01 04 10 05 FF One Push WB mode) Manual 8x 01 04 35 05 FF 8x 01 04 A9 00 FF CAM_AWB Normal 8x 01 04 A9 01 FF...
  • Page 58 4K PTZ Camera  User Manual Command Function Command Packet Remark Down 8x 01 04 0A 03 FF 8x 01 04 4A 00 00 Direct pq: Shutter Position 0p 0q FF Reset 8x 01 04 0B 00 FF 8x 01 04 0B 02 FF Iris Setting CAM_Iris Down...
  • Page 59 4K PTZ Camera  User Manual Command Function Command Packet Remark 8x 01 04 21 02 FF CAM_WDRS Down 8x 01 04 21 03 FF trength 8x 01 04 51 00 00 Direct p: WDR Level Positon 00 0p FF 8x 01 04 53 0p FF P=0-8 0:OFF CAM_NR...
  • Page 60 4K PTZ Camera  User Manual Command Function Command Packet Remark 8x 01 04 3F 00 pq Reset pq: Memory Number(=0 CAM_Memor 8x 01 04 3F 01 pq to 254) Corresponds to 0 to 9 on the Remote Commander 8x 01 04 3F 02 pq Recall 8x 01 04 61 02 FF CAM_LR_Re...
  • Page 61 4K PTZ Camera  User Manual Command Function Command Packet Remark 8x 01 04 A4 00 FF Flip-H 8x 01 04 A4 01 FF Single Command For CAM_Flip Video Flip Flip-V 8x 01 04 A4 02 FF Flip-HV 8x 01 04 A4 03 FF P: 0~E Video format CAM_Video 8x 01 06 35 00 0p...
  • Page 62 4K PTZ Camera  User Manual Command Function Command Packet Remark 8x 01 06 02 VV WW AbsolutePosition 0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF 8x 01 06 03 VV WW RelativePosition 0Y 0Y 0Y 0Y 0Z 0Z 0Z 0Z FF Home 8x 01 06 04 FF...
  • Page 63 4K PTZ Camera  User Manual Command Command Return Packet Remark Packet CAM_ZoomPo y0 50 0p 0q 0r 0s 8x 09 04 47 FF pqrs: Zoom Position sInq y0 50 02 FF Auto Focus CAM_FocusA 8x 09 04 38 FF y0 50 03 FF Manual Focus FModeInq...
  • Page 64 4K PTZ Camera  User Manual Command Command Return Packet Remark Packet y0 50 0B FF Iris priority y0 50 0D FF Bright CAM_Shutter y0 50 00 00 0p 0q 8x 09 04 4A FF pq: Shutter Position PosInq CAM_IrisPosI y0 50 00 00 0p 0q 8x 09 04 4B FF pq: Iris Position...
  • Page 65 4K PTZ Camera  User Manual Command Command Return Packet Remark Packet CAM_Memory p: Memory number last 8x 09 04 3F FF y0 50 0p FF operated. y0 50 02 FF SYS_MenuMo 8x 09 06 06 FF deInq y0 50 03 FF y0 50 02 FF CAM_LR_Rev 8x 09 04 61 FF...
  • Page 66 4K PTZ Camera  User Manual Command Command Return Packet Remark Packet ab cd : vender ID ( 0220 ) CAM_VersionI y0 50 ab cd mn pq : model ID 8x 09 00 02 FF mn pq rs tu vw FF rs tu:ARM Version vw:reserve P: 0~E Video format...
  • Page 67 4K PTZ Camera  User Manual 5.2 Pelco-D Protocol Command List Function Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Tilt 0xFF Address 0x00 0x08 Speed Speed Tilt Down 0xFF Address 0x00 0x10 Speed Speed Tilt Left 0xFF Address 0x00 0x04 Speed Speed Tilt...
  • Page 68 4K PTZ Camera  User Manual Function Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Query Pan 0xFF Address 0x00 0x51 0x00 0x00 Position Query Pan Value Value Position 0xFF Address 0x00 0x59 High Byte Response Byte Query Tilt 0xFF Address 0x00 0x53 0x00...
  • Page 69 4K PTZ Camera  User Manual 5.3 Pelco-P Protcol Command List...
  • Page 70 4K PTZ Camera  User Manual Byte Byte Byte Byte Function Byte1 Byte2 Byte5 Byte6 Tilt 0xA0 Address 0x00 0x08 0xAF XOR Speed Speed Tilt Down 0xA0 Address 0x00 0x10 0xAF XOR Speed Speed Tilt Left 0xA0 Address 0x00 0x04 0xAF XOR Speed Speed...
  • Page 71 4K PTZ Camera  User Manual Query Pan Value Value Position 0xA0 Address 0x00 0x59 High 0xAF XOR Response Byte Byte Query Tilt 0xA0 Address 0x00 0x53 0x00 0x00 0xAF XOR Position Query Tilt Value Value Position 0xA0 Address 0x00 0x5B High 0xAF XOR...
  • Page 72 4K PTZ Camera  User Manual Maintenance and Troubleshooting 6.1 Camera Maintenance 1)If the camera will not be used for a long time, please turn off the power switch. 2)Use a soft cloth or lotion-free tissue to clean the camera body. 3)Use a soft dry lint-free cloth to clean the lens.
  • Page 73 4K PTZ Camera  User Manual ⚫ Serial port can not work 1. Check whether the camera serial device protocol, baud rate, address is consistent 2. Check whether the control cable is connected properly 3. Check whether the camera working mode is the normal operating mode (see Table 2.9) ⚫...