Tascam RS-232 Manuel d'utilisateur télécharger pdf

322

RS-232 Specification

7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tascam.com

All features and specifications are subject to change without notice. Contact your local TASCAM representative for the latest information.

Page 1 of 5

322_RS-232_TECHDOC.pdf

030404

• Individual Control Over Each Deck

• Extensive Transport Control Command Set

(Includes CPS, RTZ, Sync Reverse and Dubbing)

• Transport Status Tallies

• Tape Counter Readout Information (MM:SS)

• Tape Counter Reset Command

• Tape Status (Record Prohibit/Enable)

• Empty Deck Indication

RS-232 IMPLEMENTATION OVERVIEW

COMMAND STRUCTURE & BEHAVIOR

Data Transmission Speed:

Command Spacing:

Character Length:

Parity Bit:

Stop Bit:

9600 bps

>20msec

8 bit

None

1 bit

Connector:

Pin 2:

Pin 3:

Pin 5:

DB9

Rx Data

Tx Data

Ground

TASCAM's 322 cassette deck has a standard RS-

232C port, capable of receiving commands and

sending status information. Commands are

included for transport functions, including CPS

(Compumatic Program Search), Counter Reset,

and Sync Reverse settings. Tally information

will include deck status, timer information and

record prohibit status.

Basic Transport Commands:

Preamble - All command strings for the 322 begin with an

identifying phrase of "Line Feed" (0Ah) and a "0" (30h).

Command - The command follows the preamble directly.

(For a complete list of all the commands, see Transport

Commands on the next page.)

Deck - This determines whether the command is targeted

at Deck 1 (30h 31h) or Deck 2 (30h 32h).

Direction - For commands which have directionality to it,

this determines whether the forward or reverse direction is

desired. Forward direction (30h 31h) and reverse direction

(30h 32h) are used for commands with direction. Transport

commands without direction use a "no direction" (30h 30h)

place holder.

Delimiter - All command strings for the 322 end with

"Carriage Return" (0Dh) as the delimiter.

Status Request Commands:

Status request commands will follow the same structure as

basic transport commands, except a direction is not

included in the command. (That information will be given

in the reply.)

The 322 does not automatically generate status commands

when mechanisms change, so the controller will need to

scan the 322 at some rate.

When setting a scanning cycle, it is important to recognize

that the 322 requires 20 milliseconds between commands.

Since there are 3 types of information per deck (time,

record prohibit, and mechanism status), it is easily possible

to scan each status every half second, and still only be

sending messages to the 322 every 83 milliseconds.

TASCAM USA has tested the 322, scanning each status type

every half second, and the 322 performed flawlessly.

Rx Data

Tx Data

Ground

Tx Data

Rx Data

Ground

322 RS-232 Port External Unit

Preamble

Comma

eck

elimiter

0Ah 30h 30h 30h31h 31h31h 31h 0Dh

0 0 0 11 11 LF

Preamble

Command

Deck

Delimiter

0Ah 30h 30h 00h35h 31h30h

0 0 CR5 10

RS-232 Pin Assignment & Protocol Specification:

SENSE MECHANISM STATUS, DECK 1PLAY, DECK 1, SIDE A

1 2 3 4 5

Résumé du contenu

Page 1 - RS-232 Specification

322RS-232 Specification 7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.tas

Page 2 - COMMAND LIST

322 RS-232 Specification 7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.ta

Page 3 - COMMAND LIST (CONT)

322 RS-232 Specification 7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.ta

Page 4 - TALLY LIST

322 RS-232 Specification 7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.ta

Page 5

322 RS-232 Specification 7733 Telegraph Road • Montebello, CA 90640 • (323) 726-0303 • http://www.ta

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Tascam RS-232 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Jeux de cassettes Tascam RS-232. Tascam RS-232 User Manual Manuel d'utilisatio

Résumé du contenu

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