Do you know RS232  and RS485?  They are still widely used although they are introduced more than half a century ago. They are two not very different serial communicators. Both serial communication standards made major impacts on the video conference camera.

video conference camera's interface

RS232 overview

The RS-232 interface complies with the interface standard for serial data communication established by the Electronic Industries Alliance (EIA). The original number is EIA-RS-232 (232, RS232 for short). It is widely used for computer serial interface peripheral connections. Connect cables and mechanical, electrical, signal, and transfer processes.

The data transmission rate specified by the RS-232-C standard is 50, 75, 100, 150, 300, 600, 1200, 2400, 4800, 9600, 19200 baud per second.

RS485 overview

The RS-485 serial bus is widely used when the communication distance is required to be several tens of meters to several kilometers. RS-485 uses balanced transmit and differential receive, so it has the ability to reject common-mode interference. In addition to the high sensitivity of the bus transceiver, it can detect voltages as low as 200mV, so the transmitted signal can be recovered beyond the kilometer.

RS-485 uses a half-duplex mode of operation, and only one point can be sent at any time. Therefore, the transmitting circuit must be controlled by an enable signal.

Both RS232 and RS485 can be found in applications such as:

(1)Scientific equipment

(2)Industrial wireless controls



(5)Medical equipment, etc.

Most of our products have two control interfaces, such as USB, SDI, and NDI Conference camera, If you want to know more about it, please contact us, thank you!