COFDM Wireless Downlink Transmitter

COFDM wireless digital video transmitter was designed for use with HD or SD cameras, it’s a superior miniature wireless video transmitter designed to capture real-time, high-quality video from Point of View Cameras, UAV/UGV/Body Cams/Concealments, and sports cameras. The transmitter features HDMI or SDI or AV inputs with COFDM modulation technology and H.264/H.265 encoding that complete video audio transmission in high-speed motion and NLOS (pas de ligne de vue) conditions avec une faible latence. COFDM wireless transmitter delivers up to 27dBm/30dBm/34dBm(different model) of power in a small metal case weighing less than 150 grammes, providing long range, reliable HD video transmission.

• COFDM modulation and H.264/H.265 video compression;
• Résolution Full HD, 1080i/P @60fps;
• Great security by AES encryption;
• Conception modulaire et hautement intégrée;
• Transfert de signal stable en NLOS et déplacement à grande vitesse.
• Fréquence de travail réglable, band width, débits binaires, RF power, etc.

Now we have several models COFDM transmitter (in different RF power and video input interface with the same technology solution which lists below) ready to ship. We can also customize wireless COFDM transmitter according to your requirements based on our modules very quickly.

COFDM Transmitter Model	ST100	ST200	ST210-HDMI	ST210-SDI
Entrée vidéo	Mini HDMI or AV	HDMI or AV + Ethernet	HDMI or AV	SDI or AV
Video encoder	H.264	H.264	H.264/H.265	H.264/H.265
Maximum RF Power	500mW	1W/2.5W	1W/2.5W	1W/2.5W
Consommation d'énergie	<1UN@12V	<1.3A/2.1A@12V	<1.3A/2.1A@12V	<1.3A/2.1A@12V
Poids	135g	140g	137g	139g
Dimensions	74x68x24.7mm	106×63.4x27mm	104.5x50x27mm	104.5x50x27mm

All of our COFDM wireless transmitters are consist of three modules, H264/H.265 video encoder module, COFDM modulation module and power amplifier. All of our COFDM transmitters use the same modulation module(our RCB Module),the same H264 video encoder solution in different board model. All of the transmitters can be setup with our Config Panel or Windows PC via control UART.

COFDM wireless transmitter Specification:   

IO

Entrée vidéo HD	HDMI/SDI/Ethernet(Specify in different model)
Entrée vidéo composite	NTSC or PAL
Data UART	Jusqu'à 115200 baud Selectable
Contrôler l'UART	UART setup from Config Panel or PC or other device
Alimentation	DC supply
Sortie RF	Lycée

Modulation

Formats de modulation	COFDM(DVB-T)
Transporteurs	2K
Bande passante	Configurable de 1 MHz à 8 MHz, pas à pas de 1KHz
FEC	1/2, 2/3, 3/4, 5/6, 7/8
Intervalle de Garde	1/32, 1/16, 1/8, 1/4
Constellation	QPSK, 16QAM, 64QAM
Débits	0.5Mbps à 31,67 Mbps

RF

Bandes de fréquences	Spécifier: 300~360MHz, 350~400MHz, 450~500MHz, 520~560MHz, 580~620MHz, 680~720MHz, 820~860MHz, (customizable from 200~860MHz)
Tuning Step size	1KHz
Mise hors tension	27dBm, 30dBm, 34dBm(Specify in different model)

Vidéo et audio

Entrée vidéo	HDMI/SDI(Spécifier) or CVBS, Détecté automatiquement après le démarrage du système
Formats vidéo	1080@60P, 1080@50P, 1080@30P, 1080@25P, 1080@24P, 1080@60I, 1080@50I, 1080@30I, 720@60P, 720@50P, 720@30P, …… 720*480 60je(NTSC), 720*576 50je(COPAIN)
Codage vidéo	H.264/H.265
Entrée audio	Embedded HDMI/SDI or AV audio
Audio Coding	CAA, 16peu, stéréo, 32Kbit/s
Le chiffrement	AES256

Performance
Video latency: about 200ms, when our COFDM transmitter is paired with the receiver, the video(1080p60) latency from its inputting of the transmitter to the HDMI screen displaying of the receiver is about 200~250ms.

Wireless transmission range: this is relative with many conditions, the following data is just for your reference. When 1W(RF power) COFDM transmitter paired with the receiver, 6Bande passante MHz, centre frequency 590MHz, 5 dBi omni antenna with 2 metres to the groud on both sides, the LOS(line of sight) transmission range is about 1km to 2km. When 1W(RF power) COFDM transmitter paired with the receiver, 6Bande passante MHz, centre frequency 590MHz, 1.5 dBi omni antenna on the UAV(flying height 100 metre), two 7 dBi omni antenna with about 2 metre to the ground, the LOS(line of sight) transmission range is about 10km to 20 km.

Surveillance et contrôle
Comprehensive transmitter setup with Config Panel or PC or other device via Control UART.

Plage de température
Spécification complète: 0° to +55°C Ambient

Exigences de puissance
Plage d'entrée: 11~13VDC

ST100 Transmitter:

ST200 Transmitter:

ST210-HDMI Transmitter:

ST210-SDI Transmitter: