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，Küçük boyut，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、kablosuz bant genişliği、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 1,5 mm aralıklı koltuk，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 1,5 mm aralıklı koltuk，TTL 3,3V seviyesi。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 1,5 mm aralıklı koltuk，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。

工作指示灯：

Overview

The ST220 HD Digital Wireless Image Transmission Transmitter kompakt bir, high-performance device designed to deliver reliable wireless video transmission for professional applications. By integrating a built-in COFDM modulation module, BİR H.265/H.264 video encoding board, ve bir small-size PA power amplifier module, the ST220 achieves stable long-distance video transmission in a rugged, hafif paket.

The transmitter adopts a CNC aluminum alloy housing, ensuring durability, excellent heat dissipation, and lightweight design suitable for airborne applications. Desteği ile high-definition (HD) and standard-definition (SD) video inputs, configurable transmission parameters, and multiple frequency bands, the ST220 offers a flexible solution for drone operations, field broadcasting, gözetim, 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.

Ana Özellikler

• COFDM Modülasyonu: Sağlamlık sağlar, stable transmission in both line-of-sight (LOS) ve görüş alanı dışında (NLOS) ortamlar.
• Video Kodlama: Destekler H.265 (HEVC) veya H.264 (ESÜ) kodlama, with default transmission up to 1080P/I @ 60 fps.
• Şifreleme: Yerleşik AES-256 şifreleme 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 TTL3.3V veya RS232 levels, enabling simultaneous data communication along with video.
• Customizable Frequency: Wide range of selectable frequency bands between 200–860 MHz, with configurable center frequency and fine-tuning step of 1 kHz.
• Transmission Power Options: Seçilebilir 1 W (30 dBm) veya 2.5 W (34 dBm) RF output for extended range.
• Ses Desteği: Embedded HDMI audio or analog stereo audio input (Mic/Line-in selectable).
• Rugged Design: CNC-machined aluminum shell provides heat dissipation, dayanıklılık, and compactness.
• Kompakt & Hafif: Boyut 104.5 × 50 × 27 mm, weight less than 140 g, making it suitable for drone payloads.
• Configurable Parameters: Modulation settings (bandwidth, coding rate, takımyıldızı), çalışma frekansı, and FEC ratios are fully adjustable via configuration tools.
• Low Latency Modes: When paired with compatible receivers, latency can be as low as 50 MS, suitable for FPV, drone piloting, or real-time monitoring.

Teknik Özellikler

Wireless Modulation & Bulaşma

• Modülasyon: COFDM
• Bant genişliği: Ayarlanabilir 1 MHz'den 8 MHz
• takımyıldız: QPSK, 16QAM, 64QAM
• FEC (İleri Hata Düzeltme): 1/2, 2/3, 3/4, 5/6, 7/8
• Guard Aralığı: 1/32, 1/16, 1/8, 1/4
• Configurable coding ratio: 2K

Çalışma Frekansı

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

İletim Gücü

• 1 W (30 dBm) veya 2.5 W (34 dBm) seçilebilir

Video & Ses İşleme

• Video Inputs: HDMI (HD) ve CVBS analog (SD)
• Supported Formats:
  • 1080P/I @ 60/50 fps
  • 720P @ 60/50 fps
  • PAL (720×576 @ 50i)
  • NTSC (720×480 @ 60i)
• Video Kodlama: H.265 / H.264
• Ses Girişi: HDMI embedded or analog audio (Mic-in/Line-in selectable)
• Ses Formatı: AAC, 16-bit stereo

Arayüzler

• HDMI Girişi: Standard HDMI port
• SD Video Input: 4-pin, 1.5 mm pitch connector
• Transparent Data UART: 3-pin, TTL3.3V (varsayılan), optional RS232
• Configuration Port: 4-pin, TTL3.3V, compatible with parameter panel or PC connection
• Güç Girişi: XT30PW-M konektörü (DC12V, 11–13V range)
• Anten: SMA konektörü (erkek, inner pin)

Göstergeler

• Güç LED'i: Kırmızı, always on when powered
• Bağlantı LED'i: Yeşil, blinks during wireless transmission activity

Güç & Tüketim

• Besleme Gerilimi: DC12V (11–13V)
• Tüketim:
  • ≤15 W @ 1 W RF çıkışı
  • ≤23 W @ 2.5 W RF çıkışı

Fiziksel

• Boyut: 104.5 × 50 × 27 mm (excluding connectors and mounting points)
• Ağırlık: <140 g

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

Uygulamalar

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:

• Endüstriyel & Commercial UAVs: Long-distance wireless video backhaul for drones in mapping, denetleme, and surveying.
• Yayın & Medya: Wireless camera links for live events, spor, and news gathering.
• Güvenlik & Kanun Yaptırımları: Mobile video transmission for surveillance vehicles, saha operasyonları, or public safety drones.
• Arama & Kurtarma Operasyonları: Reliable video feeds in disaster zones or remote areas.
• Savunma & Reconnaissance: Tactical UAV or ground unit video transmission with secure AES-256 encryption.

İsteğe Bağlı Yapılandırmalar

• Frekans Bantları: Customizable bands from 200–860 MHz.
• Veri Bağlantı Noktası: Configurable as TTL (varsayılan) veya RS232.
• Video Input Priority: HDMI veya AV (factory-configurable).
• Dual-Video Input Mode: Optional dual-input encoding and transmission.
• İletim Gücü: 1 W (low power) veya 2.5 W (high power).
• Receiver Compatibility: Compatible with SR110, SR200, SR300 models depending on latency and resolution needs.