Datavideo ptc-200, Инструкция по эксплуатации

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8. RS-422 Control Protocol
8.1 RS-422 PIN Descriptions
Camera Controller
GND 1 1 GND
NC 2 2 NC
RX- 3 3 TX-
TX- 4 4 RX-
TX+ 5 5 RX+
RX+ 6 6 TX+
NC 7 7 NC
NC 8 8 NC
8.2 RS-422 Control Operation Guide
8.2.1 Overview of VISCA
In VISCA, the side outputting commands, for example, a computer is called the controller, while
the side receiving the commands, such as a PTC-200, is called the peripheral device. The PTC-200
serves as a peripheral device in VISCA. In VISCA, up to seven peripheral devices like the BRC-
300/P can be connected to one controller using communication conforming to the RS-232C/RS-
422 standard. The parameters of the RS-232C/RS-422 interfaces are listed as follows:
•
Communication speed: 38400 bps
•
Data bits: 8
•
Start bit: 1
•
Stop bit: 1
•
Non parity
Flow control using XON/XOFF and RTS/CTS, etc., is not supported.
The address of the controller is fixed at 0.
The addresses of peripheral devices are as follows.
When the address of the controller is fixed at 0
The addresses of the peripheral devices are 1, 2, 3 … in order, starting from the one nearest the
controller. The address of the peripheral device is set by sending address commands during the
GND