Sony SRG-300H Technical Manual

Also see for SRG300H: Brochure Operating instructions

Command ListVISCA1) RS-232/RS-422CommandsUse of RS-232/RS-422 control software based upon thiscommand list may cause malfunction or damage tohardware and software. Sony Corporation is not liablefor any such damage.Overview of VISCAIn VISCA, the device outputting the commands, forexample, a computer, is called the controller, while thedevice receiving the commands, such as this unit, iscalled the peripheral device. In VISCA, up to sevenperipheral devices can be connected to onecontroller using communication conforming to the RS-232/RS-422 standard. The parameters of RS-232/RS-422 are as follows.• Communication speed: 9600 bps/38400 bps• Data bits : 8• Start bit : 1• Stop bit : 1• Non parityFlow control using XON/XOFF and RTS/CTS, etc., isnot supported.Peripheral devices are connected in a daisy chain. Asshown in Fig. 1, the actual internal connection is a one-direction ring, so that messages return to the controllervia the peripheral devices. The devices on the networkare assigned addresses.The device address is assigned to each device on thenetwork. The address of the controller is fixed at 0.Each VISCA equipment has VISCA IN and VISCAOUT connectors.Set the DTR input (the S output of the controller) ofVISCA IN to H when controlling VISCA equipmentfrom the controller.NoteWhen connecting in a daisy chain using this unit, set the VISCA/LAN switch, RS-232/RS-422 SELECT switch, and BAUD RATESELECT switch correctly.In case that any device having different setting is connected in adaisy chain, the devices do not operate correctly.Fig. 1 VISCA daisy chain connectionVISCA EquipmentINOUTINOUTINOUTVISCA Controller..............................................................................................................................................................................................................................1) VISCA is a protocol developed by Sony for controlling a consumer’s camcorder. “VISCA” is a trademark of SonyCorporation.