TOA Electronics VM-2120 用户手册

48

Input 

Open voltage:

3.3 V DC 

Short-circuit current: Under 1 mA 
Activation: 

No-voltage make contact (one-shot signal is shown below.) 

Output 

Circuit:

Open collector (See below.) 

Withstand voltage: 30 V DC 
Control current:

Under 10 mA 

Over 100 ms

Control current

*

1

An ascending 4-tone chime is sounded when the
broadcast begins. 

*

2

An ascending 4-tone chime is sounded when the
broadcast begins, and a descending 4-tone chime
is sounded upon broadcast completion. 

*

3

The chime sound source must be pre-recorded into
a CF (CompactFlash) card to be inserted into the
optional EV-200 Voice Announcement Board. (See
p. 36.) 

*

4

Simultaneously turns on or off the phantom power of
Inputs 1 – 3. See p. 35 for the method to switch off
the phantom power for the individual Inputs 1 to 3. 

Set the rear panel-mounted SETTINGS switch (p. 9, 10 No. 29) as shown below. 

SETTINGS

All switches No. 1 – 8 are factory-preset to the OFF position.

1 2

ON

3 4 5 6 7 8

Switch No. 

1

2

3

4

5

6

7

8 

Function Phantom 

Power*

4

Telephone Paging Chime Selection Input 3 Input 2 Input 1

OFF (Up position)

OFF

Chime ON

Mic

Mic 

Mic

ON (Down position)

ON

Chime OFF

Line

Line

Line

Switch No.

Chime Tone

3

4

5

OFF OFF OFF

2-Tone Chime 

OFF OFF

ON

2-Tone Chime (Fast Repeat) 

OFF

ON

OFF

4-Tone Chime (Up) *

1

OFF

ON

ON

Single-Tone Chime 

ON

OFF OFF

4-Tone Chime (Up & Down) *

2

ON

OFF

ON

Gong 

ON

ON

OFF

Pre-recorded Chime *

3

ON

ON

ON

OFF 

See the Chime

Selection table