For help with optical transceiver transmission problems, a two-way 485 optical transceiver transmits the keyboard control signal of the matrix. Waiting online, thank you

1. If your keyboard is directly connected to the keyboard interface of the matrix, and the camera control line is connected to the dome control interface of the matrix, then this requires two separate 485 signals in different directions, one pair Optical transceivers are definitely not possible.

2. If your matrix only has one 485 port, which means that the matrix does not send PTZ control signals but relies on the keyboard to send control signals, then the signals sent by the keyboard need to be sent to both the dome camera and the matrix. In other words, the keyboard is the transmitting end and the matrix is ??the receiving end. However, the current optical transceiver video and 485 happen to be in the opposite direction, so a pair of optical transceivers cannot achieve this. In this case, if the control of the optical transceiver is made in the same direction, and the 485 signal output from the keyboard is distributed to all dome cameras and matrices at the same time, it can be realized. But this requires changing the 485 line.

It is recommended to use two pairs of optical transceivers