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Note
RS-232C connector plug is supplied with the Digital Video Recorder.
For RS-232C connection to PC, use null modem cable.
Terminal No.
1
2
3
4
5
6
7
8
9
Symbol
Name
NC
RD
SD
NC
SG
NC
RS
CS
NC
Not connected
Receiving data
Sending data
Not connected
Signal ground
Not connected
Request to send
Clear to send
Not connected
1
6
5
9
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: