What is (Channel B) CHB_DTR?
DTR stands for `Data Terminal Ready`. It is one of the hardware flow control lines in the RS-232 standard. It is an output from the pan tilt unit (PTU) that indicates the PTU is ready to receive data.
DTR stands for `Data Terminal Ready`. It is one of the hardware flow control lines in the RS-232 standard. It is an output from the pan tilt unit (PTU) that indicates the PTU is ready to receive data.