TOA Electronics M-9000 - Manual (Page 53)

53
14.1. Control I/O Terminal Connections
14.1.1. Remote volumes 1, 2
Volume of the input or output channels can be remotely adjusted. (The REMT VOL 1 terminal is factory-preset
to output 1, and the REMT VOL 2 to output 2.)
Connect a 10 k
Ω (linear taper) variable resistor as shown below or input the DC voltage of 0 to +10 V.
The larger the variable resistor resistance, the larger the volume.
14.1.2. Control inputs 1 – 4
Connect switch contacts, etc. to these terminals.
Open voltage is 3.3 V, and the short-circuit current is 1 mA or less.
14.1.3. Control outputs 1 – 4
Use these terminals to activate LEDs, relays, and other external equipment.
Maximum operating current is 50 mA, and the maximum applicable voltage is +27 V.
REMT VOL1
(Remote volume 1)
REMT VOL2
(Remote volume 2)
IN
(Control inputs)
OUT
(Control outputs)
IN
E
IN
E
1
2
3
4
E
1
2
3
4
E
DC voltage
0 to 10 V
Applicable DC voltage
Max. 27 V DC
LEDs, Relays, etc. (Max. 50 mA)
or
Voltage control
10 k
Ω (linear-taper)
Contact closures,
Open collectors, etc.
(Open voltage: 3.3 V, Max. 1 mA)
E
E
4
4
3
3
1
2
2
1
VOL2
REMT
VOL1
REMT
OUT
IN
I/O
CTRL
E
IN
E
IN
Control-I/O connection terminal
14. CONNECTIONS