HD digital wireless image transmission transmitter

高清数字无线图传发射机ST220内置编码板、COFDM调制模块、小尺寸PA功率放大模块，整机采用CNC铝合金壳体，tamaño pequeño，重量轻，传输分辨率高，发射距离远。

• COFDM调制。
• H265/H264视频编码，默认最高支持1080P/I @60fps。
• AES256加密。
• 支持非视距高速移动传输。
• 中心频点、ancho de banda inalámbrico、传输码流等均可配置。

ST220主要技术规格

ST220发射机可配套SR300接收机、SR110接收机、SR200接收机使用。ST220发射机与SR300接收机点对点无线传输H265视频时，视频延迟一般在200~300ms之间(未包含相机自身延迟)。ST220发射机搭配SR110接收机，H264低延时模式传输时，视频延迟一般在50~130ms之间(未包含相机自身延迟)。

ST220发射机接口信号

ST220发射机

AV输入接口：

标清输入接口，4PIN Asiento con paso de 1,5 mm，音频支持Mic in或Line in输入(出厂时指定)。可通过配参面板设定PAL或NTSC制式。

CFG接口：

配置串口(Control-uart)，4PIN Asiento con paso de 1,5 mm，Nivel TTL de 3,3 V。其中的5V信号用于对接配参面板时给配参面板供电。

Data接口：

单向透传数据串口(Data-uart)，该串口数据会通过COFDM无线链路单向传输到对应接收机的数据串口上。3PIN Asiento con paso de 1,5 mm，默认出货为TTL 3.3V电平，也可在出货时指定设置为标准RS232电平串口。

Luz indicadora de trabajo：

Descripción general

los ST220 HD Digital Wireless Image Transmission Transmitter es un compacto, high-performance device designed to deliver reliable wireless video transmission for professional applications. By integrating a built-in COFDM modulation module, un H.265/H.264 video encoding board, y un small-size PA power amplifier module, the ST220 achieves stable long-distance video transmission in a rugged, paquete ligero.

The transmitter adopts a CNC aluminum alloy housing, ensuring durability, excellent heat dissipation, and lightweight design suitable for airborne applications. Con apoyo para alta definición (alta definición) and standard-definition (DAKOTA DEL SUR) entradas de vídeo, configurable transmission parameters, and multiple frequency bands, the ST220 offers a flexible solution for drone operations, field broadcasting, vigilancia, and other wireless video applications.

Paired with receivers such as the SR300, SR110, or SR200, the ST220 enables real-time video transmission with selectable latency modes. Depending on configuration, latency can be reduced to as low as 50–130 ms for critical low-delay applications or maintained at 200–300 ms in high-compression modes for bandwidth optimization.

Características clave

• Modulación COFDM: Garantiza robustez, stable transmission in both line-of-sight (LOS) and non-line-of-sight (NLOS) entornos.
• Codificación de vídeo: soportes H.265 (HEVC) o H.264 (AVC) codificación, with default transmission up to 1080P/I @ 60 fps.
• encriptación: Incorporado Cifrado AES-256 guarantees secure video and data links.
• Flexible Video Input: Standard HDMI input for HD signals, and CVBS/analog input for SD video sources. Automatic input detection with HDMI preference, or configurable for AV priority. Optional dual-input encoding available.
• Transparent Data Transmission: One-way transparent serial data channel (UART), configurable for TTL 3.3V o RS232 levels, enabling simultaneous data communication along with video.
• Customizable Frequency: Wide range of selectable frequency bands between 200–860MHz, with configurable center frequency and fine-tuning step of 1 kilociclos.
• Transmission Power Options: Seleccionable 1 W (30 dBm) o 2.5 W (34 dBm) RF output for extended range.
• Soporte de audio: Embedded HDMI audio or analog stereo audio input (Mic/Line-in selectable).
• Diseño robusto: CNC-machined aluminum shell provides heat dissipation, durability, and compactness.
• Compacto & Ligero: tamaño 104.5 × 50 × 27 mm, weight less than 140 gramo, making it suitable for drone payloads.
• Parámetros configurables: Configuración de modulación (ancho de banda, coding rate, constelación), frecuencia de trabajo, and FEC ratios are fully adjustable via configuration tools.
• Low Latency Modes: When paired with compatible receivers, latency can be as low as 50 Sra, suitable for FPV, drone piloting, or real-time monitoring.

Especificaciones técnicas

Wireless Modulation & Transmisión

• Modulación: COFDM
• Ancho de banda: Adjustable from 1 MHz a 8 megahercio
• Constelación: QPSK, 16QAM, 64QAM
• FEC (Corrección de errores hacia adelante): 1/2, 2/3, 3/4, 5/6, 7/8
• Intervalo de guarda: 1/32, 1/16, 1/8, 1/4
• Configurable coding ratio: 2K

Frecuencia de trabajo

• Standard Bands:
  • 300–360 MHz
  • 350–400 MHz
  • 450–500MHz
  • 520–560 MHz
  • 580–620 MHz
  • 680–720 MHz
  • 820–860MHz
• Personalización: Other frequencies from 200–860MHz available upon request
• Step size: 1 kHz configurable center frequency

Transmitir potencia

• 1 W (30 dBm) o 2.5 W (34 dBm) seleccionable

Vídeo & Procesamiento de audio

• Video Inputs: HDMI (alta definición) y CVBS analog (DAKOTA DEL SUR)
• Supported Formats:
  • 1080P/I @ 60/50 fps
  • 720PAG @ 60/50 fps
  • CAMARADA (720×576 @ 50i)
  • NTSC (720×480 @ 60i)
• Codificación de vídeo: H.265 / H.264
• Entrada de audio: HDMI embedded or analog audio (Mic-in/Line-in selectable)
• Formato de audio: CAA, 16-bit stereo

Interfaces

• Entrada HDMI: Standard HDMI port
• SD Video Input: 4-alfiler, 1.5 mm pitch connector
• Transparent Data UART: 3-alfiler, TTL 3.3V (por defecto), RS232 opcional
• Configuration Port: 4-alfiler, TTL 3.3V, compatible with parameter panel or PC connection
• Entrada de energía: Conector XT30PW-M (CC 12 V, 11–13V range)
• Antena: Conector SMA (masculino, inner pin)

Indicadores

• LED de encendido: Rojo, always on when powered
• LED de enlace: Verde, blinks during wireless transmission activity

Fuerza & Consumo

• Voltaje de suministro: CC 12 V (11–13V)
• Consumo:
  • ≤15 W @ 1 Salida RF
  • ≤23 W @ 2.5 Salida RF

Físico

• tamaño: 104.5 × 50 × 27 mm (excluding connectors and mounting points)
• Peso: <140 gramo

Performance with Receivers

• ST220 + SR300 Receiver:
  • Point-to-point H.265 transmission
  • Typical latency: 200–300 ms (excluding camera delay)
• ST220 + SR110 Receiver:
  • Low-latency H.264 transmission mode
  • Typical latency: 50–130 ms (excluding camera delay)
• ST220 + SR200 Receiver:
  • Standard COFDM reception with configurable settings

aplicaciones

The ST220 HD digital wireless image transmission transmitter is designed for professional video transmission in demanding environments. Its combination of compact design, high-resolution support, and configurable transmission options make it suitable for:

• Industrial & Commercial UAVs: Long-distance wireless video backhaul for drones in mapping, inspección, y topografía.
• Transmisión & Medios de comunicación: Wireless camera links for live events, deportes, and news gathering.
• Seguridad & Aplicación de la ley: Mobile video transmission for surveillance vehicles, operaciones de campo, or public safety drones.
• Buscar & Rescue Operations: Reliable video feeds in disaster zones or remote areas.
• Defensa & Reconocimiento: Tactical UAV or ground unit video transmission with secure AES-256 encryption.

Configuraciones opcionales

• Bandas de frecuencia: Customizable bands from 200–860 MHz.
• Puerto de datos: Configurable as TTL (por defecto) o RS232.
• Video Input Priority: HDMI o AV (factory-configurable).
• Dual-Video Input Mode: Optional dual-input encoding and transmission.
• Transmitir potencia: 1 W (baja potencia) o 2.5 W (energía alta).
• Compatibilidad del receptor: Compatible with SR110, SR200, SR300 models depending on latency and resolution needs.