TOA Electronics C-DR091 CU Series External Terminal Connections, Communications protocol

10. EXTERNAL TERMINAL CONNECTIONS

10.1. RS-232C Terminal Communications Specifications

The Digital Video Recorder can be controlled by a PC or other equipment via a connection through the RS-

232C port. However:

Notes

•Control software is not available as standard accessory.

•TOA takes no responsibility for hardware or software failures or damages resulting from the use of third- party control software.

10.1.1. Communications protocol

Transfer System: Start/stop system

Parity Bit: Even number

Transfer Speed: 9,600 bps, 19,200 bps, and 38,400 bps

Code: Binary code

Bit Length: 8 bits

Flow Control: CTS/RTS handshake or none

Stop Bit: 1

Error Control: None

10.1.2. RS-232C Connector pin arrangement

The following signal names are assigned to each pin of the RS-232C D-sub 9P male connector:

Terminal No.	Symbol	Name
1	NC	Not connected
2	RD	Receiving data
3	SD	Sending data
4	NC	Not connected
5	SG	Signal ground
6	NC	Not connected
7	RS	Request to send
8	CS	Clear to send
9	NC	Not connected

Note

RS-232C connector plug is supplied with the Digital Video Recorder. For RS-232C connection to PC, use null modem cable.

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