Panasonic AJ-D950 manual RS-232C interface, Introduction, Hardware specifications

RS-232C interface

1.Introduction

(1)The VTR can be operated by commands when the RS-232C interface is used. (See command table on page 79 – 81.)

(2)Conditions for acknowledging commands from RS-232C interface

The front panel REMOTE/LOCAL switch must be at REMOTE. The setup menu item No. 204 “RS232C SEL” must be ON.

If the above conditions are not met, [ACK] + [STX]ER001[EXT] is returned to the external unit.

Whether the [ACK] code is returned depends on the setting which has been selected for setup menu item No. 209 “RETURN ACK”.

2.Hardware specifications

External interface specifications

1)Connector specifications

Connector: D-SUB 25-pin (crossover cable supported)

Pin No.	Signal	Circuit name	Description
1	FG	Protective ground	Frame ground
2	RXD	Received data	Data is sent to PC.
3	TXD	Transmitted data	Data is received from PC.
4	CTS	Clear to send	Shorted with pin 5.
5	RTS	Request to send	Shorted with pin 4.
6	DTR	Data terminal ready	No processing
7	SG	Signal ground	Signal ground
20	DSR	Data set ready	+ voltage output after communication enable status

2)Example of connection with controller (PC)

■Using crossover cable with D-SUB 25-pin connectors

■Using crossover cable with D-SUB 9-pin and 25-pin connectors

PC side
(D-SUB 25-pin
connector)	VTR side

FG	1	1	FG
TXD	2	2	RXD
RXD	3	3	TXD
RTS	4	4	CTS
CTS	5	5	RTS
DSR	6	6	DTR
SG	7	7	SG
DTR	20	20	DSR

PC side (D-SUB 9-pin connector)

RXD	2
TXD	3
DTR	4
SG	5
DSR	6
RTS	7
CTS	8

VTR side

1FG

2RXD

3 TXD

4CTS

5RTS

6DTR

7SG

20 DSR

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