SDR name
When I first heard the SDR map, I always thought that there was some correlation between the SDR and HDR, but it was not. SDR map transmission of DJI refers to Software Defined Radio (software radio technology), which replaces the traditional hardware of professional map transmission through software, so as to achieve the purpose of expanding functions |, reducing size | and reducing power consumption. Obviously, DJI has done it this time, and has a strong anti-interference ability.
Design
The DJI SDR Map is very small, weighing 145 grams. The four antennas on the device are collapsible design, which makes the antenna design very strong and convenient for small teams. It can be powered by NPF battery and USB-C interface, has HDMI and SDI input and output, and also has USB-C interface to provide UVC function. This design makes the device easy to mount on top of cameras and small movie machines, as well as on stabilizers.
Distance
SDR transmission 2000 meters, Wi-Fi transmission 200 meters. I have used it at a distance of 1200 meters, straight line without obstruction, the signal is very stable. For regular users, using Wi-Fi mode up close is convenient and the signal will be good. When the use distance is a little longer, or there is an obstruction, it is recommended to use SDR mode.
Picture quality
Dji SDR can achieve a bitrate of 20MB/S at 1080P resolution during transmission, which is much higher than many in the sale of picture transmission.
Monitoring scheme
*The SDR mode is paired between the transmitter and the receiver, and the receiver is connected to the monitor.
*In SDR mode, the receiver's USB-C port connects to watch between phones or tablets.
*In SDR mode, broadcast mode can be turned on during monitoring to achieve an unlimited number of receiving monitoring
*Wi-Fi mode, use your phone or tablet to monitor directly.
APP
In the DJI Ronin, you can quickly connect to the image transfer to view the picture, I like the scan code connection method, and support SONY camera menu control and recording. Common monitoring tools can be used in the APP, such as false colors, zebra prints, Luts, etc., which are of great help for exposure and composition. Dji has released dedicated phone stands and tablet stands that are very easy to install.
Communicate by telephone
The call function is an Easter egg, the transmitter and receiver have 3.5mm headset interface, plug in the headset, you can form a simple one-to-one call system.
Sum up
Dji SDR picture transmission in the film and television equipment homogenization is serious today, the self-developed program to wireless picture transmission this equipment a new solution. In such a small body to achieve 2000 meters of high quality image transmission, but also to achieve unlimited expansion of the receiving end. The addition of a variety of monitoring schemes and multiple power supply schemes, and the interconnection with DJI ecology, and the use of DJI stabilizer shooting system can also be seamlessly matched, this newly listed small photo transmission has also attracted attention.
