Toa A-1812 - Manual (Page 10)

10
8. PRIORITY FUNCTIONS
8.1. Telephone Paging Input (voice-activated priority)
With the Function switch No. 4 set to ON, voices applied to the Telephone Paging input terminals mute the
input signals other than Telephone paging and Emergency input signals.
After completion of the paging announcements, the muted signals automatically return to the original level.
8.2. Microphone Input (voice-activated priority)
With the Function switch No. 5 set to ON, voices applied to the MIC 1 input terminal mute the input signals
other than MIC 1, Telephone Paging, and Emergency input signals.
After completion of the microphone announcements, the muted signals automatically return to the original
level.
8.3. Paging Microphone Input
With the MIC 1 terminal selector switch set to the
left position (DIN connector input), shorting the
connector Pins 4 and 5 sounds the chime of type
selected with the Function switch setting and
mutes the input signals other than MIC 1,
Telephone Paging, and Emergency input signals.
Opening the Pins 4 and 5 automatically returns the
muted signals to the original level.
8.4. Emergency Control Input
Shorting the Emergency Control input terminals
turns on the power, even if off, and enables both
ZONE 1 and 2 speaker outputs, muting all input
signals other than the Emergency input signals,
which go through bypassing the master volume
control.
Opening the control input terminals automatically
returns the muted signals to the original level.
Internal modification can change this Emergency
control function as follows:
Shorting the control terminals forces the power to
turn off, disabling broadcast from the unit.
Opening the terminals returns the unit operation to
the original broadcast status.
For this modification (p. 13 for details), please
consult your TOA dealer.
8.5. Telephone Paging Control Input
Shorting the Telephone Paging Control input
terminals sounds the chime of type selected with
the Function switch setting and enables both
ZONE 1 and 2 speaker outputs, muting the input
signals other than Telephone Paging and
Emergency input signals.
Opening the control input terminals automatically
returns the muted signals to the original level.
3 1
4
2
5
Muting switch
To hot line of microphone
To common (shielded) line of microphone
To cold line of microphone
CONTROL
TEL
EMER-
GENCY
CONTROL
TEL
EMER-
GENCY