DVD-V5000RxD
TxD
GND

11Additional information

Computer Control Functions

Serial Control

The player and computer are based upon the RS-232C protocol and connect through the TxD, RxD, DTR and GND terminals.

Extend Terminal

Control the player with the Extend Terminal (SW#).

External Power Control

Control the player’s power with the Power Pin within the Interface Connector.

If the player detects a high signal throughput (100 msec or more) during the Standby mode, the player powers ON. If the player detects the same signal during the Power ON mode, the player powers OFF and switches to the Standby mode. The specifications for the Power pin are as follows:

Maximum Input Voltage

 

Less Than 12 V

 

 

High Level Signal

 

More Than 4.5 V

 

 

Low level Signal

 

Less Than 0.5 V

 

 

 

 

 

 

 

 

 

 

Standby mode

 

more Than

Power ON

 

100 msec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power ON mode

 

more Than

Power OFF

 

100 msec

 

 

 

 

 

 

 

Serial Control

The signal interface is a standard RS-232C

connection.

 

Data Type

 

Data Length:

8 bit

Stop Bit:

1 bit

Parity bit:

No Parity

Data Transfer Speed (Baud Rate)

The data transfer speed may be set to either 19200 or 9600 bps through the ADV. SETUP menu (see page 42).

The factory default is 19200 bps.

Communication with a Computer

The DVD-V5000 communicates to the computer through the RS-232C port using pins 2 and 3 for communication and Pin 1 on the 15-pin D-sub connector or Pin 5 on the 9-pin D-sub connector for grounding. Control or “handshaking” lines other than the TxD and RxD connections are not required. Please refer to the diagram below for clarification.

Computer

TxD

RxD

GND

Some computers require the CTS port to be set to HIGH during communication. It is best to connect the CTS and DSR port on the computer to the DTR port on the player. During normal operation the player’s DTR is set to HIGH thus the unit is able to receive a command at any time.

Command and Status

During normal operation when a computer transmits commands to a DVD-V5000, the player responds with the status message, “execution complete”.

Example

COMPUTERDVD-V5000

(1)“Search to Frame 1000” ￿ (2) Search Execution

￿(3) Complete

(4) “Play to Frame 2000”

￿

(5)

Play Execution

 

￿

(6)

Complete

Example

 

 

 

10SE 20PL<CR> :

Search to Chapter 10

 

then play to 20

The command string enters the buffer with the first character and continues sequentially from left to right. When <CR> is entered, the commands are executed sequentially beginning with the first command in the buffer. In the example above, the first command is 10SE.

72