Micro COFDM Video Transmitter FPV1887 users manual

Micro COFDM Video Transmitter FPV1887 Wireless Video Transmission System Users Manual

Micro COFDM Video Transmitter FPV1887 Feature

• 高度集成, modular combined design
• Using COFDM modulation technology and H.265 encoding technology
• Can simultaneously transmit one channel of analog video signal and one channel of unidirectional data supporting the highest rate of 230400bps
• Low latency, end-to-end latency minimum 120ms
• Omni-directional communication, extremely strong diffraction performance
• High-speed on-the-go communication
• Transmitter heat sink aluminum casing, shockproof and impact-resistant
• 非視距 (NLOS) 行動傳輸, ground transmission, when the sending and receiving height is 3 米, the transmission distance is not less than 3Km, and the distance under line-of-sight conditions is not less than 30 kilometers (with slight non-co-frequency electromagnetic interference), the furthest The distance can reach more than 100Km (the electromagnetic environment is clean)
• 最大移動速度可達600Km/小時 (actual measurement)
• The receiver video signal is synchronously outputted in high-definition HDMI1080P with multiple formats optional, and standard-definition outputs DVD image quality
• 接收器可實現錄影和備份功能
• 128-位元AES加密與解密
• Full customization available

Mirco COFDM Video Transmitter FPV1887 Application

This product is mainly used in technical reconnaissance and evidence collection by public security and safety inspection departments. Because of its extremely strong diffraction performance and narrow-band high anti-interference ability, this product is particularly suitable for video transmission of low-altitude, high-speed drones and ground unmanned equipment.

                   The relationship between transmission distance and height

Micro COFDM Video Transmitter Parameter Indicators

COFDM Video Transmitter Appearance (僅標準化圖片, 除了客製化)

                                    Whole machine sample drawing

COFDM Video Transmitter Specification

調製方式	COFDM
工作電壓	DC11V~DC18V
Working Current	Mainboard current: 160毫安; whole machine current: 0.5-Watt PA @≤0.6A DC12V; 1-Watt PA @≤0.8A DC12V; 2-Watt PA @≤1.1A DC12V; 3-Watt PA @≤1.8A DC12V,
控制介面	標準RS232介面: 8 資料位 1 停止位 奇偶校驗 波特率: 19200
transparent Data interface	A one-way transparent serial port transmission 8 資料位 1 停止位 Supports odd parity, 奇偶校驗, Wireless parity, 波特率: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 ,230400
Encryption Method	128-位元 AES 加密
Modulation Mapping	QPSK (4QAM), 16QAM, 64QAM (factory default is QPSK)
前向糾錯	1/2 2/3 3/4 5/6 7/8 (factory default is 1/2)
保護間隔	1/32 1/16 1/8 1/4 (factory default is 1/32)
Number of Carriers	2K
Frequency Bandwidth	2/3/4/5/6/7/8M可調 (factory setting is 2MHz)
傳輸串流	1200kbs~20000kbs可調 (factory default is 1500kbs)
發射功率	Motherboard output power: -7分貝 (average power); Overall machine output: 0.5W/1W/2W/3W/5W (客製化)
Transmission Frequency	170-2900MHz frequency is continuously adjustable With a step of 100KHz (the default frequency of the tuner is 1MHz) The frequency of the whole machine needs to be customized
功率平坦度	10MHz頻段小於0.2dB
Belt to shoulder Ratio	Mainboard: 52分貝; When the output power of the whole machine is 30dB The belt-to-shoulder ratio is better than -30dB
二次諧波	≤-65dB
梅爾	32分貝
Enter Video	CVBS: NTSC/PAL制式
視訊編碼格式	H.265
Video Time Lapse	End-to-end ≤120ms
防護標準	All-aluminum radiator chassis, 防鏽, anti-shock design
尺寸	主機板尺寸: 50mm×35mm×10mm; Overall machine size: 67*48*23毫米
重量	主機板: ≤15g; Whole machine ≤85g (2輸出功率)

Micro COFDM Video Receiver Parameter Indicators

COFDM Video Receiver Appearance

COFDM Video Receiver Specification

Receive Frequency Range	170-860兆赫甚高頻&超高頻 Over 860Mhz~6000Mhz needs to add 降頻轉換器
Frequency Bandwidth	2/3/4/5/6/7/8兆赫, 可調節的
射頻輸入電平	-94dBm~0dBm (8M頻寬) -98dBm~0dBm (2M頻寬下)
射頻輸入阻抗	50 歐姆
射頻輸入連接器	SMA 女性
解調方式	COFDM
Zodiac sign	QPSK, 16QAM, 64QAM (選修的)
前向糾錯	1/2,2/3,3/4,5/6,7/8 (選修的)
承運商數量	2k，
保護間隔	1/32,1/16,1/8,1/4 (選修的)
視訊解碼	H.265
Screen Aspect Ratio	4:3 16:9
視訊輸出	HDMI/CVBS
工作電壓	DC12V＜0.3A
工作溫度	-35℃～+80℃
Appearance size	80*60*16毫米(印刷電路板尺寸); Complete machine136*115*35mm
Equipment Weight	0.1公斤 (PCBA weight); 0.35公斤 (complete machine weight）

Micro COFDM Video Transmitter Parameter Adjustment Instructions

                  Parameter adjuster (Transmitter Programmer is optional, not at the default packing)

Transmitter Parameter Configuration Tool Functional Area Description

1. Functional Area Description

• “螞蟻”: 發射天線介面, 開機前請先連接天線
• “HDMI”: 高清視訊輸入介面, 輸入1080/50P以下
• “Ctrl”: transmitter frequency modulator connection interface
• “直流12V”: DC12V電源輸入埠. “+” 是電源正極, “-” 是電源的負極
• “直流”: 電源指示燈. When this light is always on, 說明發射模組電源輸入正常.
• “TS”: 視訊輸入檢測指示燈. This light is always on to indicate that the video is input and encoded normally.

Transmitter Parameter Configuration Instructions

Connect the transmitter parameter adjuster and press the “選單/確定” 按鈕進入選單.
The encryption key and data serial port parameters are first displayed.
Press the left or right button to move the cursor and use the up and down buttons to adjust the parameters.

When this parameter setting is completed, 按 “選單/確定” to enter the next level menu. 此時, 顯示介面如圖

Press the left or right button to move the cursor, and press the up or down button to adjust the required parameters. The interface prompt is as shown in the figure.

When all parameter settings are completed, 按 “選單/確定” 確認鍵, and the display will appear as shown below.

設定完成後, 參數寫入成功, 顯示如圖.

Micro COFDM Video Receiver Parameter Adjustment Instructions

Receiver Parameter Configuration Tool Functional Area Description

• “射頻輸入1” “射頻輸入2”: 接收天線介面. It is recommended to connect the antenna before turning on the power switch, because static electricity from the human body may cause the receiver to crash.
• “HDMI”: 視訊輸出介面, 輸出視訊格式可以透過調整 “HDMI” 控制面板上的選單.
• “直流12V”: 電源輸入介面, 請嚴格遵守電源電壓要求, and over-voltage input is strictly prohibited.
• “USB”: Video storage interface. When the U disk is inserted, 按 “出口” key to start recording. After successful recording, the recording time will appear on the video monitor, and the storage file name is “TS”.

Receiver LCD parameter description

2. Functional Area Description

1. CH01解鎖（鎖定）
   • “CH01” is the receiver channel number, “解鎖” is the receiving signal that is not locked, 和 “LCKED” is the signal that is locked. “頻道00” of the receiver is the starting writing channel, 發射機正常工作對應的預設通道為 “CH001”
2. 頻率：602.0兆赫
   • “602.0兆赫” 是接收機的接收頻率. This frequency must be consistent with the frequency set by the transmitter. 否則, the receiver cannot search or receive the transmitter signal.
3. 體重:6.0兆赫
   • “體重” 頻寬, 如圖所示, “體重: 兆赫” is understood to mean that the radio frequency bandwidth is 6MHz (default is 2MHz). This bandwidth must be consistent with the bandwidth set by the transmitter, 否則, the receiver will search for or cannot receive the transmitter signal.
4. FEC:1/2
   • “FEC:1/2” is channel error correction. This parameter synchronizes the transmitter setting parameters and cannot be modified by the receiving end.
5. 胃腸道:1/32
   • “胃腸道:1/32” 是頻道保護間隔. This parameter synchronizes the transmitter setting parameters and cannot be modified by the receiving end.
6. 地圖: QPSK
   • “地圖: QPSK” 是調製映射. This parameter is synchronized with the transmitter setting parameters and cannot be modified by the receiving end.
7. 信噪比: 0.0分貝(信噪比:15.0分貝)
   • “信噪比:15.0分貝” 是訊號品質 (IE. 信噪比, 值越大, 越好). 什麼時候 “0.0分貝” 顯示, 訊號品質是 0, 且接收器將無法鎖定.
   • “(信噪比:15.0分貝)” 表示接收訊號雜訊比大於15dB. 在 “QPSK” 調製映射狀態, the receiver can lock as long as the signal-to-noise ratio is greater than 6dB.
8. 密碼：-72.1dBm（PW）:-72.1）
   • PW是接收訊號強度, (參考電平值). The farther away the receiving end is from the receiving end, the weaker the signal strength, and the larger the displayed value. When the transmitter is not turned on, 如果接收器的訊號強度大於-90dBm (如-79.7dBm), 可以認為是鄰頻幹擾

Receiver Parameter configuration description

Turn on the power of the receiver and press the “選單/確定” 按鈕進入選單. The menu with adjustable parameters is first displayed. If you want to search for a specified frequency, 按 “選單/確定” 按鈕進入選單. If you need to remove a channel, press the down button to select “利斯坦堡頻道”, and then press the “選單/確定” button to enter the menu operation; if you need to save the current channel, 按 “選單/確定” at the same time and right-click to confirm the save.

頻率搜尋方法如下. 進入頻率設定選單後, 顯示介面如圖. Press the left or right button to move the cursor, press the up or down button to adjust the frequency, radio frequency bandwidth, 和與發射器匹配的金鑰. Press “選單” /好的” key to search. 注意此時發射器必須開啟, otherwise the receiver will not be able to lock because it cannot search for signals.

當搜尋完成時, 按 “選單/確定” 確認. 此時, the channel is saved in the parameter adjustment board register, 如圖所示. If you need to save the channel to the receiver register, 按 “選單/確定” 同時按下 鍵和右鍵.

接收機參數設定完成後, the panel button functions are as follows:

“↑」「↓“: Each individually selectable receiver channel “CH **”

“←」「→」: 您可以選擇查看接收器的隱藏參數

“出口”: 開始和停止錄音

Micro COFDM Video Transmitter and Receiver Typical troubleshooting

Fault phenomenon	解決方案
No image, no sound	1. Check whether the transmitter battery is charged and whether the transmitter indicator light is normal. Pay special attention to the distance and wiring pattern of the transmitter video cable and power cable from the antenna. 2. Check whether the camera battery is charged, whether the audio and video cable has been connected to the transmitter, and whether the camera is in standby mode. 3. Check whether the receiver antenna is connected properly and whether the antenna connector is wet or loose. 4. Check whether the monitor audio and video cables are connected properly and whether the startup screen is normal. 5. Check the frequency settings, and whether the frequency settings for transmitting and receiving are the same. 6. Check the electromagnetic environment to see if there is interference from same-frequency signals nearby
The receiver has no picture, but the sound is normal	1. Check whether the video cables of the camera and transmitter are connected properly 2. Check whether the video cable between the receiver and the PC is properly connected
No sound or noise from the receiver but the normal picture	1. Check whether the audio cables of the camera and transmitter are connected properly. 2. Check whether the audio cable between the receiver and the TV or audio output device is properly connected.
The image is continuous, then pauses, and a black screen appears.	1. The signal is not good, which is normal. 2. Whether the signal quality display on the LCD screen on the receiver keyboard is normal, and whether the parameter value fluctuates greatly (多於 10). 如果是這樣, it means there is some frequency interference.
Coverage suddenly becomes smaller	1. Check whether the transmitting antenna and receiving antenna are connected properly and whether there is water or poor contact 2. Check whether the power supply voltage of the transmitter is normal. 3. Check the surrounding environment for electromagnetic interference from signals of the same frequency.
The coverage is small and the transmission distance is not far enough	Check the installation position of the receiving antenna, increase the height of the receiving antenna, and use high-gain omnidirectional and directional antennas and diversity reception if necessary
There is image and sound, but the image is blurry	Check whether the camera at the front end of the transmitter is focused accurately and whether the autofocus function setting is turned on.

Video Operation Guide

How to delete the Channel List on the COFDM Wireless Video Receiver

[VF-202408]