How to switch HDMI or CVBS video input via the UART AT command?
सीओएफडीएम मॉड्यूलेटर डेमोडुलेटर मॉड्यूल एनकोडर डिकोडर एचडीएमआई सीवीबीएस एवी इनपुट एईएस 256 FHD आरएफ स्ट्रीमिंग
सीओएफडीएम मॉड्यूलेटर डेमोडुलेटर मॉड्यूल एनकोडर डिकोडर एचडीएमआई सीवीबीएस एवी इनपुट एईएस 256 FHD आरएफ स्ट्रीमिंग
विषयसूची
Another side view
COFDM Encoder module, CVBS / HDMI इनपुट, आईपी आउटपुट
For More details about the COFDM encoder board, please visit here
COFDM Encoder module Advantage:
- अल्ट्रा-लो लेटेंसी H.265/H.264 ऑडियो और वीडियो एन्कोडिंग अधिकतम समर्थन 1080P@60 रीयल-टाइम वीडियो कैप्चर और एन्कोडिंग
- एचडीएमआई या एवी ऑडियो और वीडियो इनपुट, एन्कोडिंग के बाद, ईथरनेट पोर्ट आउटपुट या वायरलेस मॉड्यूल के लिए आउटपुट, वीडियो एन्कोडिंग बिट दर को गतिशील रूप से कॉन्फ़िगर किया जा सकता है
- ऑडियो इनपुट और ऑडियो डिकोडिंग उत्पादन का समर्थन करें
- दो वीडियो का समर्थन करें (एचडीएमआई + एवी) एक साथ इनपुट एन्कोडिंग (विकल्प, डिफ़ॉल्ट एचडीएमआई या एवी एन्कोडिंग है, दो इनपुट सोर्सिंग में से एक चुनें). )
- वेब यूआई या सीरियल पोर्ट UART एटी कमांड विन्यास प्रबंधन के लिए
COFDM transmitter module
सीओएफडीएम मॉड्यूलेटर-डीमोडुलेटर डेटाशीट डाउनलोड
COFDM डेमोडुलेटर Vcan1776RX-H264 डेटाशीट
The last version of the TX RX board
टेक्सास: V6.5.6p
RX: 4.1.2पी
पूछे जाने वाले प्रश्न
1. What should I do when I found one Tx module doesn't generate RF output power?
- Question1: Could you please tell me part number of this component, we try to find localy and check. उत्तर 1: It is a inductance named LOH32PN2R2NNC.
- Suggest Check Points: If the power supply current of the board is well but there is no RF output, maybe the below component TC1-1-13MX+ is generally damaged.
- In order to avoid damage to this device during transportation (the device itself is relatively high), we ordered red glue protection for this device when we shipped it.
- The engineer also suggests that you check to see if the cable is loose or in poor contact.
- Please try to replace the FPC cable connecting the two boards
- We can provide spare parts if you're sure which one.
2. Can you offer me the UART AT command file for this model?
ज़रूर
कृपया नीचे दिए गए लिंक की जाँच करें.
Encoder Modulator Decoder Demodulator Module Parameter Configuration Instructions COFDM AT Command
3. How does this COFDM Video transmitter and receiver support an IP camera?
1. It is not easy to connect to IPC for a one-way COFDM link. We have an H264 model, which is connected to IPC input by expanding the network port, but there are requirements for IPC models (not all models of IPC can be well connected with COFDM links), we have tested the IPCs of Hikvision, Dahua, and Xiongmai, and found that the connection effect of Hikvision is quite ideal.
2. It is impossible to directly remove the HDMI CVBS encoder and connect the IP Camera to the COFDM Transmitter board. One-way COFDM connection to IPC requires special technical methods to realize.
3. The best way is to recommend using our two-way image transmission transceiver, which directly supports the IP camera.
4. If the customer must use the COFDM transmitter board to support the IP camera, there are two points to pay attention to.
5. The first point is a technical problem. We need to use an alternative method to allow unidirectional COFDM links to be used with IPC.
6.If you consider IPC from the perspective of cost reduction, you don't need to consider it. Because the encoding board and decoding board are still necessary, the cost cannot be saved.
7. The second point is the customer's usage habit, which is no longer the traditional two-way link method. They can view the IP Camera Video and even control the PTZ of the IP Camera via the web page or PC-side PC software (UART AT commands).
8. Because of this model wireless link is a COFDM one-way link; there is no reverse data (only one-way transmission; data cannot be transmitted from the receiver to the transmitter); the customer can only watch the video of the IP Camera and cannot reversely configure the IP Camera's parameters or control the PTZ of the IPCamera.
9. This is a problem that many customers overlooked at first and later complained about after using it.
10. So we don't recommend that the client choose a one-way COFDM transmitter and receiver for the IP camera. We have a better solution for the IP Camera via two video link transceivers.
4. Could you please give me the Required C/N (BER=2x10-4 after Viterbi) for different the bandwidths 2, 4, 6, तथा 8 Mhz of HDMI video link we use?
cofdm video transmitter parameter configuare tool
1. वर्तमान में, the receiver only provides two parameters of signal strength and bit error rate, and there is no C/N parameter
2. What parameters do you need to adjust according to different bandwidths? If it is a video code stream, the transmitter encoding board itself will automatically calculate the appropriate video stream code rate according to the currently used wireless parameters (बैंडविड्थ, सैनिक, सीआर, आदि।), and the video code rate will be found after changing the bandwidth with the parameter board will automatically adapt.
3. प्रश्न, If our camera quality is good enough for both 4 MHz and 8 मेगाहर्ट्ज बैंडविड्थ. इस मामले में, Should the customer choose 4 मेगाहर्ट्ज या 8 मेगाहर्ट्ज?
उत्तर: Our one-way COFDM shipments use 4Mz wireless bandwidth by default, corresponding to a video bit rate of 3.12Mbps, which is enough for 1080p; If changed to 8MHz wireless bandwidth under the same conditions, the video bit rate doubles to 6.24Mbps. All customers can choose between wireless bandwidth 4MHz and 8MHz, even 6MHz can also be considered.
4. प्रश्न: Which is better for this tx+rx set from a receive sensitivity view?
उत्तर: For wireless links, it can be simply considered that the receiving sensitivity will be higher at lower wireless bandwidths. From the perspective of receiving sensitivity, 4मेगाहर्ट्ज>6मेगाहर्ट्ज>8मेगाहर्ट्ज
6. Do you have any COFDM Relay Repeater Modules for the Wireless Video Transmitter and Receiver？
वायरलेस वीडियो ट्रांसमीटर और रिसीवर के लिए COFDM रिले पुनरावर्तक
ज़रूर
कृपया नीचे दिए गए लिंक की जाँच करें
ड्रोन UAV वायरलेस वीडियो ट्रांसमीटर और रिसीवर Vcan1870 के लिए COFDM रिले रिपीटर मॉड्यूल
7. Could send me a data measurement of sensitivity for 4/6/8 MHz cases? उदाहरण के लिए, for QPSK, 1/2सीआर, 1/32GI what threshold reception RX's input level (dBm)?
Single channel receiving sensitivity:
-97+/-1डी बी at QPSK 8MHz,
-98+/-1डी बी at QPSK 6MHZ,
Sensitivity increased by 3dbm when receiving with dual antennas
9. Where can I download the UDP player? We recommend Splayer_v4.2_2020.6.6 which we use frequently.
The receiver default firmware supports RTSP player, some clients prefer UDP player, which we also can offer, then RTSP player doesn't support. （RTSP and UDP can only choose one of the two firmware）
कृपया नीचे दिए गए लिंक पर डाउनलोड करें.
Splayer_v4.2_2020.6.6
https://drive.google.com/file/d/1ihzUhfnx2Wo3zLO8UAs1aUQeLswonJD-/view?usp=sharing
Splayer_v4.3_2022.10.22
https://drive.google.com/file/d/1PQc-LZ55qGnjeMsjkHYSloHfY3NEUsGH/view?usp=drive_link
10. Can you offer a metal box to protect the COFDM receiver board?
ज़रूर, कृपया नीचे दी गई तस्वीर की जाँच करें.
How to upgrade the COFDM video receiver
How to upgrade the COFDM drone video encoder modulator board
सबसे पहले समीक्षा करने वाले बनें "सीओएफडीएम मॉड्यूलेटर डेमोडुलेटर मॉड्यूल एनकोडर डिकोडर एचडीएमआई सीवीबीएस एवी इनपुट एईएस 256 FHD आरएफ स्ट्रीमिंग”
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$199.00
मूल कीमत थी: $50.00.$15.00वर्तमान कीमत है: $15.00.
वीडियो ट्रांसमीटर
$699.00 – $824.00
वीडियो ट्रांसमीटर
COFDM वायरलेस वीडियो ट्रांसमीटर के लिए बोर्ड सांकेतिक शब्दों में बदलना
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