TOA Electronics VM-2120 instruction manual Emergency Broadcast Sequence, Emergency mode

8.4. Emergency Broadcast Sequence

General-purpose broadcast

Depression of the Remote Microphone's Emergency broadcast switch

Activation of Alert input*1 by external equipment.

Activation of Evacuation input*1 by external equipment

Alternate repetition of Alert tone signal and Alert announcement

Live microphone announcement by the Remote Microphone's Talk key

End of set repetition

Alternate repetition of Evacuation tone signal and Evacuation announcement

Live microphone

announcement by

the Remote

Microphone's Talk key

Activation of Emergency Stop input*1 by external equipment

End of Emergency broadcast

(The unit returns to the general-purpose broadcast mode it was in immediately before the Emergency broadcast was started.*2)

*1 Control I/O connector terminal located on the VM amplifier's rear panel

Emergency broadcast can also be stopped by pressing the front panel-mounted Reset key. Note, however, that the zones the unit was broadcasting to just before the emergency broadcast activation may change.

*2 General-purpose broadcast is not restored depending on its type.

[Emergency mode]

•The emergency mode refers to the state where the VM amplifier is making emergency broadcast or where the "VM amplifier's broadcast cutoff control" signal is being transmitted from external emergency broadcast equipment to the VM amplifier (refer to p. 45 "CONTROL I/O CONNECTOR FUNCTIONS").

•When the VM amplifier is placed in the emergency mode that takes precedence over general-purpose broadcast mode, the Emergency indicators of both the amplifier and the Remote microphone will light.

[Restoration to general-purpose broadcast]

For the general-purpose broadcasts cut off when its mode enters the emergency mode, some are restored after emergency mode completion, and some are not.

Broadcast to be restored	Broadcast not restored
Broadcast that is not activated by manual	Broadcast that is activated by manual operation of or
operation of or control from external equipment	control from external equipment

•Broadcast from Inputs 1 – 3 not activated by • Broadcast from Inputs 1 – 3 activated by control input

control input (CTRL 1 – 3).	(CTRL 1 – 3).
• Broadcast from BGM Inputs 1 and 2.	• Broadcast from Remote Microphone
	• Telephone paging
	• Message broadcast
	• Westminster chime

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