COFDM Video Transmitter COFDM HD Wireless Composite Video Transmitter digital FPV VTX
20 PCS FPV جهاز إرسال الفيديو VTX
3 جهاز استقبال الفيديو PCS FPV VRX
2أداة تكوين معلمة PCS VTX
2 كرتون
45× 37 × 27 سم 9.03 كجم
89×13 × 12 سم 2.02 كجم
جهاز إرسال الفيديو اللاسلكي COFDM HD HDMI 1080P CVBS SD 720P
خاصية
- يمكن تعديل تردد العمل من 170 ميجا هرتز إلى 930 ميجا هرتز
- واجهة الفيديو والصوت: واجهة HDMI الرقمية ومدخلات CVBS التناظرية (_إدخال SDI سيأتي قريبًا)
- معالجة فيديو رقمية عالية الجودة وH.264 / برنامج ترميز الفيديو MPEG-2, جودة عالية الدقة
- تأخير ترميز قصير جدًا لـ 500 ميلي ثانية
- نقل ثابت للصور عبر الهاتف المحمول عالي السرعة ومتعدد المسارات, فيديو
- قدرة NLOS قوية
- وجود استقبال متنوع
- مع التشفير
- الافتراضي 1 واط نقل طاقة الترددات اللاسلكية, تطوير 1 ~ 5 واط مختلفة
- وفقا لمتطلبات العملاء, يتم تخصيص OEM أو ODM
تخصيص
- تردد العمل 170 ميجا هرتز ~ 900 ميجا هرتز, يمكن تخصيصها
- طريقة التعديل COFDM
- طاقة خرج التردد اللاسلكي 1 ~ 5 وات يمكنها تطوير المزيد من الطاقة
- عرض النطاق الترددي 6/7/8 ميجا هرتز
- التشفيرAES / AES2 / التابع / DES2
- فاصل الحراسة: 1 / 32,1 / 16,1 / 8,1 / 4
المعايير الفنية
H.264 / MPEG-2
دفق الفيديو
2ميغابت في الثانية ~ 25 ميغابت في الثانية
تأخيرات النظام: <500تصلب متعدد
بير: ≥10-6
مسافة الإرسال: 1 ~ 10 كم
تنسيق الضغط: H.264 / MPEG-2
إدخال الفيديو: HDMI, فيديو CVBS التناظري, والصوت
إدخال الصوت: ستيريو, يمين يسار
تعريف الصورة: 1080ف / أنا (1920×1080) متوافق مع 720P, 480ص, وSD @ معدل الإطار 25 إطارات / ثانية.
واجهة إدخال الفيديو: 3.5 مقبس سماعة الرأس مم, HDMI
واجهة إدخال الصوت:3.5 مقبس سماعة الرأس مم, HDMI
مزود الطاقة: VCC6V ~ 40 فولت
الأبعاد: 100مم × 43 مم × 10 مم (الطول × العرض × الارتفاع)
وزن:0.2كلغ
التعليمات
Q: ما هو جهاز PA الذي ستستخدمه لمضخم صوت بقدرة 5 وات؟?
أ: RFPA3800DS
Q: We intend to use it for both UAVs and land drones.We can use a single receiver, and multiple transmitters, صحيح? If so, what are the default frequencies for some receiver?
أ: نعم, it supports multiple transmitter and one receiver. The transmitter frequency supports 150-860Mhz customized for you. التردد الافتراضي هو 595 ميجا هرتز.
Q: Do we have the option of changing the frequency within the configuration settings?
أ: Because of the transmitter includes transmitter board, power amplifier and transmitter antenna.The transmitter board frequency supports 150Mhz-6Ghz to change. But the power amplifier and transmitter, in order to increase the transmission range, the frequency range always focus one +/-15Mhz range.if you are used widely frequency range, the transmission range should be shorter. We will offer you the configuration board tool to change frequency.
Q: It’s possible that a separate frequency is used for each transmitter. لكن, the receiver might get their signals, such as a TV changing channels.
أ: نعم, transmitter supports to customize 300 ميجاهيرتز, 595 ميجاهيرتز, or 700Mhz, but the transmitter frequency range is +/-15Mhz. The receiver supports to search from 170 إلى 860 Mhz range.
Q: Will I require separate antennas and power amplifiers for every frequency?
أ: نعم. If you confirm, you need 300 ميجاهيرتز, 595 Mhz and 700Mhz as a working frequency. Then we will prepare the 285-315Mhz, 580-610 Mhz and 685-715 Mhz transmitter and power amplifier inside.
Q: Could you compare the FPV1887 and the COFDM-912T for me?
أ: FPV1887 receiver supports diversity RF tuner (2 هوائي) الإدخال. FPV1887 transmitter supports 2M frequency bandwidth.
The bandwidth is adjusted to 2Mb, although the picture quality is not so good, but at least, the video signal is smooth. The penetration and diffraction capabilities of wireless signals are further improved. ال كوفدم-912T can only be adjusted to a minimum of 6MB, but when the signal is relatively poor, the picture will be stuck and frozen, and the video link will be interrupted.
The fpv1887 model might offer 2MHz, 4ميغاهيرتز, 6Mhz and 8MHz bandwidth options, which are adjustable. The 912T model doesn’t come with a 2M bandwidth.
Q: What distance can we cover using a land drone?
أ: From drone transmitter in the ground receiver, 1 watt PA almost supports 10km, 2-watt power amplifier supports 30km and 3-watt power amplifier supports 50km. For land drone will be less range.
Q: If the transmitter antenna is 1 meter above the ground. Perhaps the directional antenna can be helpful on the receiver.
أ: The transmission range also depended on whether there are obstacles between the transmitter and the receiver. Yagi directional antenna or flat panel directional antenna are recommended. Directional antenna has 12-14dbi, the omni antenna is only 6-7dbi. Please check our COFDM 2 watts Power amplifier transmitter are testing the NLOS.
Q: When using a drone on land. The design’s watertight, sealed construction is excellent. Can we use a cooler to cool things down?
أ: نعم. The FPV transmitter is installed under the high-speed propellers spinning to cool. Please install it on a metal medium to allow it to dissipate heat with the help of metal.
Q: Does this model allow users to scramble video using its own code?
أ: نعم, it supports AES 128-bit encryption and decryption. You can choose any password you like. The optional transmitter parameter configuration programming tool allows you to enter identical code into both the transmitter and receiver for communication. خلاف ذلك, you won’t be able to lock onto the frequency and receive the video properly.
Q: About the amplifier’s power. Can we manage the output power to conserve battery life and control signal strength?
أ: The configuration tool lets you adjust transmitted attenuation to control the power amplifier’s output. The Atten (Attenuation): 0dB≈ 3-watt PA; -2dB≈ 2-watt PA; -4dB≈ 1-watt PA (if you need to change the TX power to smaller than the default setting)
Q: The PA should have multiple power levels to conserve battery life. Adjust the transmit power based on the received signal strength.
أ: It is no this function. Our model is based on one-way unidirectional transmission, and the transmitter cannot receive or sense the signal sensitivity of the receiving end to adjust its output power. Our two-way wireless video data transmission system has this function.
Q:May I use any controller on transmitter board to control or change TX PA level?
أ: The attenuation value of the transmitter needs to be adjusted by the removable configuration board tool.If your company has software engineers, you can refer to the following technical documents to control the parameters of the transmitter board through the serial port.
How to configure the parameters of the FPV VTX module
لذا, it can be set manually in the config board only. In the UAV, the PA level may be controlled via the control channel. Cause, if the distance is not long, the TX PA level may be less to save the battery and save operator too.
Q:All parameters are adjustable via the UART channel. أيضًا, the bandwidth.
أ: نعم, clients need to be able to develop things themselves.We have this interface on the circuit board, but not on the shell.
Q: Can the VTX frequency be adjusted cover the entire band, from 70 ميغاهيرتز إلى 6 جيجاهرتز?
أ: The transmitter frequency supports from 150Mhz to 6Ghz. The receiver frequency supports from 170Mhz to 860Mhz. You need to add RF downconversion to the receiver.
Q: Does the PA also support frequencies from 150 ميغاهيرتز إلى 6000 ميغاهيرتز? I just need a new antenna, صحيح?
أ: التردد الافتراضي هو 595 ميجا هرتز, then PA and transmitter antenna frequency range is 580~610Mhz. The frequency range is +/-15Mhz on the center working frequency.
If you need a different frequency, please tell us when you order, we will customize the power amplifier and transmitter for you. على سبيل المثال, if you want the working frequency at 300Mhz, then we do 285~315Mhz PA for you. Over 170-860Mhz, we also do for you. But the power amplifier output of 10 watts is only 5W, and its efficiency will be reduced.
Oliver –
This COFDM HD Wireless Video Transmitter is an absolute revelation for our FPV operations! Finally ditching analog static, the robust digital COFDM signal delivers crystal-clear HD video with remarkably low latency, even flying behind obstacles or at extreme range. The signal penetration is phenomenal – maintaining a stable, usable feed through dense trees and around buildings where everything else failed. كان الإعداد واضحا, and the rock-solid reliability gives us unprecedented confidence during complex missions. It transforms long-range FPV from frustrating to utterly immersive and dependable. A critical upgrade for any serious pilot demanding professional-grade video transmission