TOA Electronics VM-2120 用户手册

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• A chime tone can be sounded when the broadcast of the sound source (Priority 3) connected to Inputs 1 – 3

not activated by remote control (CTRL IN 1,2,3) is started (and completed). 

• Have a chime tone remotely transmitted from the unit's rear panel-mounted CONTROL I/O connector pin No.

9 "Chime activation." (See p. 45 "CONTROL I/O CONNECTOR FUNCTIONS.") Make a chime activation
switch and connect it to between the pin and GND terminal. 

Step 1. Using the unit's front panel-mounted zone selector key (Zone 1 – 5) or All-zone broadcast key, select

the desired zone(s) to broadcast the sound source connected to Input 1, 2, or 3. 

Note: The chime sound volume depends on the broadcast volume level adjusted with the master volume

control and zone volume control. 

Step 2. Turn on (make) the Chime switch. A pre-announcement chime tone will be sent out to the zone(s)

selected in Step 1. 

Broadcast 

sound source

VM amplifier 

CONTROL I/O D-sub connector

One of Input 1 – 3

Chime activation

GND

Chime activation switch

Pin No. 9

VM amplifier 

Chime activation

GND

Chime activation switch

Pin No. 9

Make

Break

Pre-announcement 
chime tone

Master volume control

Zone volume control [Zone 1 – 5]

Zone selector key [Zone 1 – 5]

All-zone broadcast key