高清便攜式COFDM移動視頻無線傳輸系統用戶手冊

COFDM Mobile Video Wireless Transmission users manual for COFDM-908T and COFDM-912T

Users Manual for COFDM Mobile Video Wireless Transmission

This is a manual for COFDM-912T and COFDM-908T. If the HD input is mentioned in the text, it refers to the COFDM-908T model. If the SD input is mentioned in the text, it refers to the COFDM-912T model. Please Pay attention to the distinction.

1. 特征

• 高度集成, 糢塊化設計
• 採用四氟化度調製技術, H.264圖像編碼技術
• Can transmit one 1080P HDMI signal and one unidirectional data up to 230400Kbps
• 低延遲。, the minimum end-to-end latency is 350ms
• 全方位溝通, 唔怕建牆
• High-speed travel-to-travel communication,
• 發射器散熱器型鋁箱, 防震和抗衝擊
• 非視線 (非眎距) 移動傳輸, the transmission distance of 2W power is not less than 30 kilometers under the condition of no interference, the transmission distance of 5W power is not less than 50 公里, and the transmission distance of 10W power is not less than 80 公里
• 最大移動速度可達600公里/鐘頭 (量過嘅)
• 音頻和視頻信號嘅同步接收, 高清HDMI1080P多格式可選, 標準清晰度輸出DVD圖像質素
• 接收器可以實現視頻錄製和備份功能
• 128-位AES加密和解密
• Can provide full customization

2. 應用

This product is mainly used in technical reconnaissance and evidence collection of public security and safety inspection departments, real-time picture transmission of drones and unmanned ships, radio and television broadcasting, broadcasting live broadcasting: 廣播字段, 體育廣播, 社會新聞、空中直播、縯播室, mountaineering expeditions and more. 適合喺城市等複雜環境中實時移動傳輸高質量圖像, 海洋, 和山.

3: Parameter Indicators

1: 發射機 (only standardized pictures, except for customization)

Product parameters:

调变	COFDM
做电压	DC11V~DC17V
工作電流	1W：≤1.3A DC12V，5W：≤2.5A DC12V，10W：≤5.2A DC12V，
控制接口	Standard RS232 interface, 8 數據位。, 1 停止位, 甚至奇偶校验, 波特率: 19200
透明數據接口	單向透明串口傳輸, 8 數據位。, 1 停止位, 支持奇數奇偶校验, 甚至奇偶校验, 無線奇偶校驗, 波特率: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 、230400
加密	撐128位加密
調製製圖	QPSK（4QAM）、16QAM、64QAM
正話向糾錯	1/2 2/3 3/4 5/6 7/8
保護間隔	1/32 1/16 1/8 1/4
承運商數量	2K
頻率帶寬	2/3/4/5/6/7/8M可調
運輸流	2000kbs~20000kbs可調
傳輸功率	1W/5W/10W
傳輸頻率	Any frequency can be customized, the frequency is continuously adjustable, the adjustable range is ±20MHz, and the step is 1MHz
功率平整度	Less than 0.2dB in 10MHz band
肩部比率	The shoulder-to-shoulder ratio is better than -28dB at full power output
second harmonic	≤-45dB
MORE	32DB
輸入視頻	720×480 60I(ntsc), 720×576 50I(朋友), 720 50p, 720 60p, 1080 50我, 1080 60我, 1080 24p, 1080 25p, 1080 30p, 1080 50p, 各種模式係自適應的.
高清界面	HDMI
視頻編碼格式	H.264
保護標準	全鋁散熱器式底盤, 防腐, 防震設計
整體尺寸	102*80*30mm（1w)/102*90*30mm（5W）/188*47*34mm（10W）/228*55*40mm（20W）
總重量	≤0.20KG （1W） / ≤0.27KG （5W） ≤1.5KG （10W） ≤2KG （20W）

2: 接收機

Product parameters:

Portable multi-bandwidth HD receiver parameters
接收頻率範圍	170-860MHz VHF&超高频
頻率帶寬	2/3/4/5/6/7/8MHz, 可选
RF輸入級別	-94dBm =-15dBm (8M帶寬)/-98dBm =-15dBm (at 2M bandwidth)
RF輸入障礙	50 歐姆
RF輸入連接器	N頭
演示方法	COFDM
Constellation way	QPSK, 16QAM, 64QAM (可选)
正話向糾錯	1/2,2/3,3/4,5/6,7/8 (可选)
承運商數量	2K，
保護間隔	1/32,1/16,1/8,1/4 (可选)
視頻解碼	MPEG-2MP@ML/H.264
screen aspect ratio	4:3 16:9
Video output image	720*576@8MHz 1080P@60P、50p、50我、30p、
音頻輸出模式	Stereo unbalanced 300/ 200mv
音讯输出	2音讯输出 + 2視頻輸出
做电压	AC220V/DC12V ＜0.4A
工作溫度	-20+C +50°C
physical dimension	136*115*35mm non-standard all-aluminum shell
設備重量	0.35公斤

4: Instructions for use

1: 發射機

1. Functional area description

“ANT”: Transmitting antenna interface, please connect the antenna before powering on

“HDMI”: High-definition video input interface, input below 1080/50P

“Ctrl”: Transmitter tuner connection interface

“DC 12V”: DC12V power input port. “+” is the positive pole of the power supply, “-” is the negative pole of the power supply

“DC” is: 電源指示燈, when the light is always on, it means that the power input of the transmitting module is normal

“TS”: Video input detection indicator light, this light is always on to indicate video input and normal encoding

2. Parameter Configuration Description

Connect the transmitter parameter adjuster, press the “MENU/OK” key to enter the menu, the encryption key and data serial port parameters are displayed first, press the left or right key to move the cursor, and the up and down keys to adjust the parameters

After the parameter setting is completed, press “MENU/OK” to enter the next menu, and the interface is displayed as shown in the figure

Press the left or right key to move the cursor, press the up or down key to adjust the required parameters, the interface prompts as shown in the figure

After all parameter settings are completed, press the “MENU/OK” key to confirm, and the display will be as shown in the figure.

After the setting is completed, the parameters are written successfully, and the display is as shown in the figure

3. General Troubleshooting

a: The light is off after the power is turned on: Check whether the power input meets the standard

b: “TS” indicator light is off: Check the video input connection cable, check whether the video input format conforms, and check whether the camera is interfered with (you can judge by holding the antenna with your hand).

c: The temperature of the transmitter is very low: check whether the current is normal (the deviation can be ±0.2A within the standard current).

d: Three lights are always on, and one of them is super bright: it means that the transmitter has failed the detection, and you can try to power off and restart (uncommon)

2: 接收機

1. Functional area description

“RF in1” “RF in2”: receiving antenna interface, it is recommended to connect the antenna and then turn on the power switch, because the static electricity of the human body may cause the receiver to crash.

“HDMI”: 視頻輸出接口, the output video format can be adjusted through the “HDMI” menu on the control panel.

“DC 12V”: 電源輸入接口, please strictly follow the power supply voltage requirements, and overvoltage input is strictly prohibited

“ON/OFF”: power switch.

“USB”: video storage interface, when the U disk is inserted, press the “EXIT” button to start the video recording, after the recording is successful, the video display will display the video recording time, and the stored file name is “TS”.

2. LCD parameter description

a：CH01 UNLOCKED（LCKED）

“CH01” means the channel number of the receiver, “UNLOCKED” means the received signal is unlocked, and “LCKED” means the signal is locked. “CH00” of the receiver is the initial writing channel, and the default channel corresponding to the normal operation of the transmitter is “CH001”

b： FREQ：602.0MHz

“602.0MHz” is the receiving frequency of the receiver, this frequency must be consistent with the frequency set by the transmitter, otherwise the receiver will not search or receive the signal from the transmitter

c： BW系列:6.0MHz

“BW” bandwidth, as shown in the figure, “BW: MHz” is understood as the RF bandwidth is 6MHz, this bandwidth must be consistent with the bandwidth set by the transmitter, otherwise the receiver will search for or cannot receive the signal from the transmitter

d： FEC:1/2

“FEC: 1/2” is the channel error correction, this parameter synchronizes the parameters set by the transmitter, and the receiver cannot be modified

e： 地理標誌:1/32

“GI:1/32” is the channel guard interval, this parameter is set by the transmitter synchronously, and the receiver cannot be modified

f:MAP: QPSK

“MAP: QPSK” is the modulation mapping, this parameter number is set by the transmitter synchronously, and the receiver cannot be modified

g： 信噪比:0.0DB(信噪比:15.0DB)

“SNR: 15.0dB” is the signal quality (噉係, the signal-to-noise ratio, the larger the value, the better). When “0.0dB” is displayed, the signal quality is 0, and the receiver will not be able to lock

"(信噪比:15.0DB)” means the receiving signal-to-noise ratio is greater than 15dB. In the “QPSK” modulation mapping state, as long as the signal-to-noise ratio is greater than 6dB, the receiver can lock

H: 俘虜：-72.1dBm（PW:-72.1)

PW is the received signal strength, (reference level value), the farther the transceiver end is relative to the distance, the weaker the signal strength is, and the larger the displayed value is, when the transmitter is not turned on, if the signal strength of the receiver is greater than -90dBm (such as -79.7dBm), it can be considered as adjacent frequency interference

3. Parameter Configuration Description

Power on the receiver, and press the “MENU/OK” button to enter the menu, the first display is the menu of adjustable parameters, if you search for a specified frequency, directly press the “MENU/OK” button to enter the menu; if you want to remove the channel, press Press down to select “ListanbulChannel”, and then press “MENU/OK” to enter the menu operation; if you need to change the video output format, move the cursor to the “HDMI Mode” menu, press “MENU/OK” to enter, and select the video to be output After formatting, press the “MENU/OK” key to confirm.

The frequency search method is as follows. After entering the frequency setting menu, the interface is displayed as shown in the figure. Press the left or right key to move the cursor, press the up or down key to adjust the frequency, 射頻帶寬, and secret key that match the transmitter, and press the “MENU /OK” key to search. Note that the transmitter must be turned on at this time, 否則, the receiver will not be able to lock because it cannot find the signal.

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When the search is completed, press “MENU/OK” to confirm, and the channel is saved in the register of the assistant board, as shown in the figure. To save the channel to the receiver register, press the “MENU/OK” key and the right key at the same time.

After the receiver parameter setting is completed, the functions of the panel keys are as follows

"↑”“↓": each individually selectable receiver channel “CH**”

"←”“→": You can choose to view the hidden parameters of the receiver

“EXIT”: start and stop recording

4. 視頻功能

Insert the storage device into the “USB” interface of the receiver, press the “EXIT” button to start recording, and a blue recording time box will appear on the upper left corner of the video display as shown below

5. General Troubleshooting

a: The value after the receiver displays “-” is very low (Tx is not turned on): It means that the current channel has serious electromagnetic interference, and the normal value is -90- -100.

b: Cannot record video: check the U disk or replace the U disk.

c: No signal received: Check whether the channel frequency is consistent with the transmitter.

d: No video output: Check the connection line, power off, and restart to check whether there is a boot interface.