Manual de usuario del sistema de transmisión inalámbrica de video móvil COFDM portátil HD

Manual de usuario de transmisión inalámbrica de vídeo móvil COFDM para COFDM-908T y COFDM-912T

Manual de usuario para transmisión inalámbrica de vídeo móvil COFDM

Este es un manual para COFDM-912T y COFDM-908T.. Si la entrada HD se menciona en el texto, se refiere al modelo COFDM-908T. Si la entrada SD se menciona en el texto, se refiere al modelo COFDM-912T. Por favor preste atención a la distinción..

1. Caracteristicas

• altamente integrado, diseño modular
• Adopte la tecnología de modulación COFDM, Tecnología de codificación de imágenes H.264
• Puede transmitir una señal HDMI 1080P y datos unidireccionales de hasta 230400 Kbps
• Baja latencia, la latencia mínima de un extremo a otro es de 350 ms
• Todos los aspectos de comunicación, no tiene miedo de la construcción de muros
• Comunicación de alta velocidad entre viajes,
• Transmisor caja de aluminio tipo disipador de calor, a prueba de golpes y resistente a impactos
• Sin línea de visión (NLOS) transmisión móvil, La distancia de transmisión de 2W de potencia no es inferior a 30 kilómetros bajo la condición de que no haya interferencias, La distancia de transmisión de 5W de potencia no es inferior a 50 kilómetros, and the transmission distance of 10W power is not less than 80 kilómetros
• La velocidad máxima de movimiento puede alcanzar los 600 km / hora. (Medido)
• Recepción sincrónica de señales de audio y video., multiformato HDMI1080P de alta definición opcional, Calidad de imagen de DVD de salida de definición estándar
• El receptor puede realizar funciones de grabación de video y respaldo
• 128-cifrado y descifrado AES de bits
• Can provide full customization

2. Solicitud

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: sector de la radiodifusión, retransmisiones deportivas, noticias sociales、aérea vivir、estudio, mountaineering expeditions and more. Es adecuado para la transmisión móvil en tiempo real de imágenes de alta calidad en varios entornos complejos, como áreas urbanas., mares, y montañas.

3: Indicadores de parámetros

1: Transmisor (only standardized pictures, except for customization)

Product parameters:

2: Receptor

Product parameters:

4: Instrucciones de uso

1: Transmisor

1. Functional area description

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

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

“control”: Transmitter tuner connection interface

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

“corriente continua” es: Luz indicadora de poder, 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, presione el “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, prensa “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, presione el “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

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

segundo: “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).

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

re: 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: Receptor

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”: Interfaz de salida de video, the output video format can be adjusted through the “HDMI” menu on the control panel.

“CC 12V”: interfaz de entrada de energía, please strictly follow the power supply voltage requirements, and overvoltage input is strictly prohibited

“ENCENDIDO APAGADO”: power switch.

“USB”: video storage interface, when the U disk is inserted, presione el “SALIDA” 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

un：CH01 UNLOCKED（LCKED）

“CH01” means the channel number of the receiver, “UNLOCKED” means the received signal is unlocked, y “LCKED” significa que la señal está bloqueada. “CH00” del receptor es el canal de escritura inicial, y el canal predeterminado correspondiente al funcionamiento normal del transmisor es “CH001”

segundo： FRECUENCIA：602.0megahercio

“602.0megahercio” es la frecuencia de recepción del receptor, Esta frecuencia debe ser consistente con la frecuencia establecida por el transmisor., De lo contrario, el receptor no buscará ni recibirá la señal del transmisor.

do： BW:6.0megahercio

“BW” ancho de banda, como se muestra en la figura, “BW: megahercio” Se entiende que el ancho de banda de RF es de 6MHz., este ancho de banda debe ser consistente con el ancho de banda establecido por el transmisor, de lo contrario, el receptor buscará o no podrá recibir la señal del transmisor.

re： FEC:1/2

“FEC: 1/2” es la corrección de errores del canal, este parámetro sincroniza los parámetros establecidos por el transmisor, y el receptor no se puede modificar

mi： GI:1/32

“GI:1/32” es el intervalo de guarda del canal, this parameter is set by the transmitter synchronously, y el receptor no se puede modificar

F:MAPA: QPSK

“MAPA: QPSK” is the modulation mapping, this parameter number is set by the transmitter synchronously, y el receptor no se puede modificar

gramo： SNR:0.0dB(SNR:15.0dB)

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

“(SNR: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

marido: PW：-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” menú, prensa “MENU/OK” to enter, and select the video to be output After formatting, presione el “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, ancho de banda de RF, 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, de otra manera, the receiver will not be able to lock because it cannot find the signal.

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When the search is completed, prensa “MENU/OK” para confirmar, and the channel is saved in the register of the assistant board, como se muestra en la figura. To save the channel to the receiver register, presione el “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

“SALIDA”: start and stop recording

4. función de vídeo

 Insert the storage device into the “USB” interface of the receiver, presione el “SALIDA” 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

un: 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.

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

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

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