COFDM Wireless Video Transmitter HDMI CVBS input
New COFDM Wireless Video Transmitter HDMI CVBS input mini modulator module long-distance FPV UAV
COFDM वायरलेस वीडियो रिसीवर COFDM-905R
High-definition digital wireless transmission transmitter COFDM-905T has a built-in encoder board, RCA COFDM modulation module, and small-size PA power amplifier module (changeable 1W, 2डब्ल्यू, 5डब्ल्यू, 10डब्ल्यू), the whole machine uses CNC aluminum alloy housing, छोटे आकार का, लाइटवेट, high transmission resolution, लंबी दूरी, कम अव्यक्ता.
विषयसूची
विशेषताएं
- Supported audio and video input methods:
- Mini HDMI input (डिजिटल)
- इनपुट बंद (CVBS Analog, वीडियो, audio right, audio left)
- Video input system support:
- मिनी HDMI: 1080 60पी, 1080 50पी, 1080 30पी, 1080 25पी, 1080 60मैं, 1080 50मैं, 1080 30मैं, 720 60पी, 720 50पी, 720 30पी, …, अनुकूलन के विभिन्न तरीके
- में बंद: 720×480 60मैं (एनटीएससी), 720×576 50मैं (दोस्त), मोड अनुकूली
- वीडियो एन्कोडिंग: adopts H264 encoding technology and supports 1080P@60 at the maximum, backward compatible with other various resolutions and frame rate encoding.
- The video encoding bit rate can be set through the serial port configuration and the default adaptive air interface rate.
- सीओएफडीएम मॉड्यूलेशन
- Configurable Convolutional Code Ratio: 1/2, 2/3, 3/4, 5/6, 7/8
- Configurable modulation method: क्यूपीएसके/क्यूएएम16/क्यूएएम64
- IFFT mode: 2के
- Configurable guard interval: 1/4,1/8,1/16,1/32
- Configurable wireless bandwidth: 1MHz~8MHz adjustable, 1KHz stepping
- Output transmit power amplifier configurable
- कार्यशील आवृत्ति बैंड: 160MHz~860MHz can be configured;
- अधिकतम संचरण शक्ति: 1W or 2W;
- Provide one-way transparent data transmission serial port;
- Provides parameters for configuring the serial port and parameter configuration panel
- AES-256 encryption transmission
- Power supply: 10 ~ 13V, 12V best RF performance;
- बिजली की खपत: The power consumption of the whole unit is about 14W when the transmit power is 1W;
- संपूर्ण आकार: 74 * 55 * 24.6मिमी
- वजन: 135जी
टिप्पणी
When the COFDM-905T transmitter and COFDM-905T receiver form a point-to-point wireless video transmission system, the video delay indicator:
The three indicators of video delay, video bit rate, and air interface rate are mutual influence and mutual restraint. When the air interface rate is greater than 5 times the video code rate, the video delay is minimum. इस मामले में, the actual test is that the video delay is about 60 milliseconds when the code is transmitted at 720P@60, and the video delay is about 130 milliseconds at 1080P@60. The delay refers to the delay from the HDMI video input at the transmitting end to the HDMI video output at the receiving end, ट्रांसमिटिंग एंड के फ्रंट-एंड कैमरे की देरी को छोड़कर (we measured the delay of a brand SLR camera at about 70 मिलीसेकंड, and the delay of a famous brand sports camera at about 130 मिलीसेकंड). For most application scenarios, the video delay is set to about 200 milliseconds by default.
When the COFDM-905T transmitter and the COFDM-905R receiver form a point-to-point wireless video transmission system, the transmission distance is:
The wireless transmission distance is related to many factors such as the test environment, ambient electromagnetic interference, occlusion conditions, air humidity, कार्य आवृत्ति, वायरलेस बैंडविड्थ, and transmitting and receiving antennas. Actual test results: a customer test, unmanned aircraft-mounted transmitter to fly about 100 meters high, set to 4M QPSK wireless bandwidth, 700MHz center operating frequency, 1W transmit power, transmitter antenna 3dBi around, Receiving double glass fiber antenna gain of about 10dBi, a distance of up to 16km (video smooth);
our own road test in Shenzhen, the launch end on the flyover, ordinary hose antenna (about 3dBi gain), 340MHz launch, QPSK 8M Bandwidth, a fiberglass antenna at the receiving end, and a Yagi antenna, के बारे में 2.2 meters high on the pole, 2.2 किलोमीटर दूर, high-definition video smooth, a small number of high-rise buildings between the transmitter and receiver, the road visually about 20 degrees bending. Due to conditional restrictions, no further road tests were made.
योजक
आकार
75 एक्स 55 एक्स 25 मिमी
पूछे जाने वाले प्रश्न
- COFDM Video Transmitter COFDM-905T supports 1000 मेगाहर्ट्ज से 2500 मेगाहर्टज.
- But the COFDM Video Receiver COFDM-905R frequency range is 170-860Mhz, it does not support it, you should use the frequency down converter.
If no Power amplifier inside, only -5db
हाँ, सहायता.
The SDI and AHD input cable is not including.
To be equipped with a fan, a short time no fan for testing is allowed
समर्थन
Details at the below link
Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions
Transparent transmission, no protocol, टीटीएल स्तर
Now transmitter and receiver both have AES encryption, just upgrade the different firmware.
कृपया नीचे दी गई तस्वीर की जाँच करें. There are two pcs 1-watt transmitter, #1 is an open metal box, the sliver part is 1-Watt PA (शक्ति एम्पलीफायर).
The enclosure can be customized. The 1w transmitter is 106×53.4x27mm
RF Performance Test
Operating Center Frequency 470MHz, शक्ति एम्पलीफायर: 1डब्ल्यू
Operating Center Frequency 700MHz, शक्ति एम्पलीफायर: 1डब्ल्यू
उन्नत करना
How to upgrade TX from 720P to 1080P?
More TX Picture
Fiaz Ahmed –
This 905T module is an incredibly powerful and impressive piece of equipment, truly a remarkable feat of engineering. During testing in a mountainous region using an unmanned aerial vehicle, we found the COFDM signal remained exceptionally stable and robust even at distances exceeding 55 किलोमीटर. Both the HDMI and CVBS inputs performed exceptionally well, exhibiting no latency issues or signal drops whatsoever during testing. This product is especially well-suited for and highly recommended to professional drone pilots who value quality and performance.