TOA Electronics VM-2120 Control I/O Connector Functions, Control I/O connector pin function table

21. CONTROL I/O CONNECTOR FUNCTIONS

The rear panel-mounted Control I/O connector enables the VM amplifier to be controlled or monitored by connected external equipment. Referring to the pin arrangement and functions, prepare the matching D-sub male connector (screw-lock type) for connection to the external equipment. (See p. 9, 10 No. 30 CONTROL I/O connector.)

VM amplifier's D-sub female connector

13 CONTROL I/O 1

Locking nut: 4-40 UNC

	25	14
CONTROL I/O connector pin function table
Pin	Signal name	IN	Signal/logic	Function/status
No.		/OUT
1	AC power ON	OUT	Active Low	When AC power is on
2	DC power ON	OUT	Active Low	When DC power is on
3	Message 1 activation	IN	One-shot make	Activates EV-200 Board's Message 1.*1
4	Message 2 activation	IN	One-shot make	Activates EV-200 Board's Message 2.*1
5	Message 3 activation	IN	One-shot make	Activates EV-200 Board's Message 3.*1
6	Message 4 activation	IN	One-shot make	Activates EV-200 Board's Message 4.*1
7	Message 5 activation	IN	One-shot make	Activates EV-200 Board's Message 5.*1
8	VM amplifier's	IN	At make	Cuts off the VM amplifier's power amplifier
	broadcast cutoff control			output.*1 *2 (External signals applied to
				EXTERNAL SP INPUT go through to the
				speakers.)
			At break	The VM amplifier's power amplifier output is
				resumed.
9	Chime activation	IN	Break-to-Make edge	Activates a start chime tone.
	(6 built-in chimes)		Make-to-Break edge	Activates an end chime tone (4-tone Down).
10	Power ON/OFF control	IN	Break-to-Make edge	Turns power on.
			Make-to-Break edge	Turns power off.
11	Westminster chime	IN	One-shot make	Activates the internal Westminster chime unit.
	activation
12	Emergency alert	IN	One-shot make	Places the unit in "Emergency broadcast" mode,
	activation			during which time an "Alert" announcement and
				an "Evacuation" announcement are broadcast. *1
13	Emergency stop	IN	One-shot make	Resets the unit from "Emergency broadcast"
	activation			mode.
14	Emergency evacuation	IN	One-shot make	Places the unit in "Emergency broadcast" mode,
	activation			during which time an "Evacuation" announcement
				is repeated. *1
15	Failure indicator control	IN	At make	The FAULT indicator lights to indicate external
				equipment failure.
16	GND
17	GND
18	GND
19	GND
20	GND
21	Power switch on	OUT	Active Low	When the power switch is on by means of
				manual or external control

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