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)
