TOA Electronics VM-2120 instruction manual Electrical characteristics

Pin	Signal name	IN	Signal/logic	Function/status
No.		/OUT
22	Communications error	OUT	Active Low	When communications cannot be achieved
				between the RM-200M and the VM amplifier
				or between VM amplifiers (High state when
				communications are restored.)
23	Failure indication	OUT	Active Low	When the FAULT indicator lamp is on
24	Emergency broadcast	OUT	Active Low	When an Emergency broadcast is performed
	on			by the VM amplifier or the external equipment.
				(See the description of Pin 8 VM amplifier's
				broadcast cutoff.)
25	EV-200's failure	OUT	Active Low	When the EV-200 Voice Announcement
				Board fails.*1

*1 Requires installation of the optional EV-200 Voice Announcement Board.

*2 Use this pin to cut off the VM amplifier's power amplifier output to allow the "Emergency broadcast" initiated by connected external equipment to go through.

[Electrical characteristics]

Input
Open voltage:	3.3 V DC
Short-circuit current: Under 1 mA
Activation:	No-voltage make contact (one-shot signal is shown below.)

	Over 100 ms
Output
Circuit:	Open collector (See below.)
Withstand voltage: 30 V DC
Control current:	Under 10 mA

Control current

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