بهترین ماژول فرستنده و گیرنده رادیویی پهپاد برای تله متری داده های ویدئویی

این Vcan2122 is a compact, medium-power bidirectional wireless data transmission module designed for reliable long-range communication in complex and interference-prone environments. بر اساس OFDM TDD wireless communication technology, it delivers strong anti-interference capability, excellent penetration performance, and highly stable data transmission.

ماژول پشتیبانی می کند multiple transmission modes, از جمله نقطه به نقطه, نقطه به چند نقطه, و trunk communication, and enables star network topologies با تا 16 گره ها in a single network. Thanks to its miniaturized design, مصرف برق کم, و multiple data interfaces, Vcan2122 is well suited for موبایل, airborne, and embedded applications where reliability and flexibility are critical.

این Vcan2122 است by default available in a wideband configuration, operating over a frequency range of 1420– 1530 مگاهرتز. Within this single continuous band, the module provides up to 110 MHz of selectable frequency range, را قادر می سازد پرش فرکانس خودکار with significantly greater flexibility to avoid interference and maintain stable links in complex RF environments.

In addition to the wideband version, optional single-band variants are also available in the following frequency ranges: 806–825.9 MHz, 1427.9–1467.9 MHz, 2401.5–2481.4 MHz. Each optional variant supports single-band operation only.

Under good line-of-sight (LOS) air-to-ground conditions, the transmission distance can reach 10-20 کیلومتر یا بیشتر, depending on high gain antenna configuration and external power amplifier support.

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امکانات

• Star Networking Capability
  Supports point-to-multipoint communication with up to 16 گره ها.

• High Bandwidth Transmission
  Maximum data rate up to 30 Mbps @ 20 مگاهرتز.

• Flexible Channel Bandwidth
  پشتیبانی می کند 3 / 5 / 10 / 20 مگاهرتز bandwidth modes.

• انتخاب خودکار فرکانس
  Automatically detects interference and selects the optimal frequency point in real time.

• Multi-System Coexistence
  Multiple Vcan2122 systems can operate simultaneously on fixed frequencies.

• Multiple Data Interfaces
  یکپارچه شده است dual 100 Mbps Ethernet ports و TTL / RS232 / SBUS serial interfaces.

• زمان تاخیر کم
  End-to-end transmission delay ≤ 20 ام‌اس.

• ارتباط امن
  پشتیبانی می کند AES-128 encryption.

• فشرده & طراحی سبک وزن
  فقط 35 g, suitable for UAVs and other weight-sensitive platforms.

• Web UI page to configuration the parameter.
  Provide a user-friendly web UI for configuring module parameters. Users can easily manage settings and modify parameters visually through the web page, without the need for complex AT commands or command-line instructions.

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مشخصات

System Parameters

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پهنای باند کانال & حساسیت

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رابط ها

• رابط برق: XT30, DC 9–15 V

• رابط آنتن: IPEX ×2

  • MAIN: Must be connected

  • AUX: Receive diversity only

• رابط های داده:

  • شبکه محلی کابلی: 100 Mbps ×2

  • سریال: TTL ×2, RS232 ×1, SBUS ×1

تعریف رابط

نظم خطی	نام پین	تعریف رابط	توضیحات رابط	جهت سیگنال
1	TXP1+	شبکه محلی کابلی 1	TX+	O
	TXM1-		TX-	O
	RXP1+		RX+	من
	RXM1-		RX-	من
2	TXP2+	شبکه محلی کابلی 2	TX+	O
	TXM2-		TX-	O
	RXP2+		RX+	من
	RXM2-		RX-	من
3	TX1	پورت سریال 1 TTL	TX	O
	RX1		RX	من
	GND		زمین	O
4	TX2	پورت سریال 2 TTL	TX	O
	RX2		RX	من
	GND		زمین	O
5	TX3	پورت سریال 3 RS232	TX	O
	RX3		RX	من
	GND		زمین	O
6	TX4	پورت سریال 4 SBUS	SBUS-OUT	O
	RX4		SBUS-IN	من
	GND		زمین	O
7	PWR	DC 9 ~ 15 ولت	قدرت مثبت	من
	GND		Power negative	من

We can also convert one TTL port to RS422, and additionally, we can add an RS232-to-RS485 converter board to support RS485, which is commonly used for camera PTZ control.

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Status Indicators

نوع ماژول	حالت	light status
		PWR	MODE	LAN1 LAN2	RSSI 123
استاد	unsynchronized	روشن شد	red light Powered on	Data is being transmitted and blinking	در حال جستجو
استاد	synchronized	روشن شد	green light Powered on	Data is being transmitted and blinking	Proportional to the strength of the received signal
برده	unsynchronized	روشن شد	red light Powered on	Data is being transmitted and blinking	در حال جستجو
برده	synchronized	روشن شد	green light Powered on	Data is being transmitted and blinking	Proportional to the strength of the received signal

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When the primary (Master, واحد زمینی, گیرنده) and secondary devices (Salve, واحد هوا, فرستنده) هستند not synchronized, the PWR (قدرت) indicators on both devices remain steadily lit. این MODE indicator است قرمز on the primary device and سبز on the secondary device. در این زمان, the RSSI lights on both devices are in a searching state.

Once the master and slave devices are synchronized, the RSSI lights display the received signal strength for each device. When data is being sent or received over the network, the LAN1 indicators on both devices light up, در حالی که LAN2 indicators blink to indicate network activity.

برنامه های کاربردی

این Vcan2122 is suitable for a wide range of professional wireless data transmission applications, از جمله:

• پهپاد / پیوندهای داده پهپاد

• آتش نشانی & ارتباطات اضطراری

• امنیت عمومی & مجری قانون

• بازرسی & Monitoring Systems

• رباتیک & در UGV

• Temporary Wireless Networks

• Industrial and Environmental Monitoring

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پرسش و پاسخ

س: What are the main and secondary antennas used for in a 1T2R UAV video data module?
آ: This module adopts a 1T2R (1 انتقال دهد, 2 دریافت کنید) معماری.

• آنتن اصلی (Primary RF path):
  Responsible for both انتقال (TX) و پذیرایی (RX).
  It is connected through a T/R (Transmit/Receive) سوئیچ, which routes the RF path either to the power amplifier during transmission or to the receiver chain during reception.
• Secondary antenna (Diversity receive path):
  Used only for reception (RX only).
  It improves link reliability by providing spatial diversity, helping mitigate:
  • Multipath fading
  • Signal blockage (به عنوان مثال, drone body shadowing)
  • Orientation-dependent signal loss

به طور کلی, the dual-receive design significantly improves link stability and robustness in mobile UAV scenarios.

س: Can I modify the RF front-end by adding an up/down converter, PA, and LNA, and convert the system into a 1T1R architecture?
آ: In theory, adding an external frequency conversion stage (up/down conversion) plus PA (تقویت کننده قدرت) و LNA (Low Noise Amplifier) can be implemented as part of a custom RF front-end. However, converting a 1T2R system into 1T1R is generally not recommended for UAV video links. Key impacts of switching to 1T1R:

• Reduced receiver sensitivity: Typically degraded by ~3–5 dB, due to the loss of spatial diversity gain.

• Lower link robustness in motion: UAV environments involve: Rapid movement / Orientation changes / Multipath fading, A single receive chain (1T1R) is more vulnerable to intermittent signal drops.

• Weaker anti-interference and fading resistance: Without dual receive antennas, the system loses diversity combining benefits.

س: What is the maximum OFDM Peak-to-Average Power Ratio (PAPR) of this wireless video/data telemetry module?
آ: The maximum OFDM PAPR of this module is typically: 11.5 دسی بل. When designing an external RF front-end (such as PA, LNA, or frequency converter), sufficient PA back-off and linearity margin should be reserved to avoid signal distortion and spectrum degradation.

س: Does Vcan2122 support video transmission?
Vcan2122 is a wireless data transmission module. Video transmission depends on external IP cameras or video encoders connected via Ethernet.

س: Can this module support IP MESH MANET functionality?
خیر, default module is star networking type. اگر نیاز دارید, we also can do IP MESH MANET (Mobile Ad Hoc Network) fucntion (use CX6702, CX6702 module). در حال حاضر, we provide it as a finished product rather than as a standalone development module. Please refer to the product image below for your reference. (CX6779-L4H2)

س: Can multiple Vcan2122 systems operate in the same area?
بله. Fixed-frequency operation allows multiple systems to coexist with minimal interference.

س: Does one unit support multiple frequency bands?
خیر. Each Vcan2122 unit supports one single frequency band only.

س: Is diversity reception supported?
بله. The AUX antenna provides receive diversity to improve link reliability.

س: تأخیر معمولی چیست?
The typical end-to-end transmission delay is ≤20 ms.