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TASCAM CD-A550/CD-A750 45
Using the RS-232C connector
By connecting the RS-232C connector on this unit with
an RS-232C connector on a computer, this unit can be
controlled from a computer. Settings related to signals are
made from the menu.
1 When in standard display mode, press the MENU
key on the main unit or the remote control to enter
menu mode.
2 Use the –/+ keys on the main unit or the remote con-
trol to show the following menu items related to the
RS-232C, and press the ENTER key on the main unit
or the remote control.
3 Use the –/+ keys on the main unit or the remote con-
trol to make settings.
4 When finished making settings, press the ENTER
key to return to the standard display.
Menu items related to the RS-232C
BAUD RATE
Use to set the baud rate (signal speed) to 4800, 9600, 19200
(default) or 38400 bps.
LENGTH
Use to set the signal data length to 7 or 8 (default) bits.
PARITY BIT
Use to set the signal parity bit to NON (default), EVEN or
ODD. “NON” is none.
STOP BIT
Use to set the signal stop bit to 1 (default) or 2.
RS-232C settings are retained even if the power is
•
turned OFF.
Please contact TASCAM customer support for infor-
•
mation about this unit’s RS-232C command protocol.
Using the parallel connector
An external controller using parallel control can control
this unit through its
PARALLEL
connector. In addition, tally
signals can be output through the
PARALLEL
connector,
allowing external devices to be operated or indicator
triggers to be sent, for example. This table shows the pin
allocation.
Pin number Function IN/OUT
1 GND –
2 TAPE PLAY REV In
3 TAPE PLAY FWD In
4 TAPE STOP In
5 TAPE RECORD In
6 TAPE REW In
7 TAPE FF In
8 TAPE PAUSE In
9 TAPE RECORD TALLY Out
10 TAPE STOP TALLY Out
11 TAPE PAUSE TALLY Out
12 TAPE PLAY TALLY Out
13 TAPE DIRECTION TALLY Out
14 CD PLAY In
15 CD STOP In
16 CD CALL In
17 CD PREVIOUS In
18 CD NEXT In
19 CD READY In
20 CD FADER START In
21 CD STOP TALLY Out
22 CD READY TALLY Out
23 CD PLAY TALLY Out
24 CD EOM TALLY Out
25 +5V* –
In: +5V pull-up, external command reception active when
low (operates at ground of 30 ms or more)
Out: transport status display signal by open collector (15-V
dielectric strength, 35-mA maximum electric current)
*50-mA maximum supplied electric current
The illustration below shows an example of connection to
allow playback control of this unit using fader start and stop
signals.
9 – Using the control I/O (CD-A750 only)