1 2 3 4 5 6 7 8 9 10
ON
1
23
25AE Paging
Horn shown
(not included)
PWR
VIKING
©
VIKING
ELECTRONICS
HUDSON, WI 54016
PAGING - LOUD RINGING
AMPLIFIER SYSTEM
POWER 13.8V AC
MODEL PA-2A
PAGING
VOLUME
RINGING
VOLUME
MIN
MAX
MIN
MAX
1
2
3
4
5
6
7
8
9 10
NI
G
HT
T
RAN
SFE
R
P
AGING
HORN
6
0
0
OHM
A
UDIO OUT
T
RUN
K OR
P
AGING
P
ORT
LOUD
R
IN
G
T
RIGGE
R I
N
PUT
1 - 3
4 - 6
RINGING LINES
WA
R
B
L
E
/
CHIME
1 2 3 4 5
AUDIO LOADING
T
A
LK BA
TTER
Y
ALERT T
O
NE
Music
Source
Model PA-2A
(not included,
see DOD# 485
for more info)
Model MTG-10
See DOD# 497 and 498 for info
on all of Viking’s speaker options.
To Paging Port
PABX/
KSU
Station
OR
A. Tone Generator Only
The output level of the tones can be adjusted by adjusting the
Tone Volume Control
as shown in
Installation
section
B
. This does not affect the level of the audio input. The overall level of both the tones and the paging/back-
ground music can be boosted by 14 dB by setting DIP switch 3 to the ON position.
C. Tone Volume Control
If the
MTG-10
is to be used strictly as a tone generator, connect pins
9
&
10
of the
MTG-10
to the audio input of
a paging amplifier. In this mode, no input signal is required, only a contact closure for the desired tone.
3
C. Tone Generation and Background Music Control
If the application requires background music to be interrupted by the tone, connect the background music source
to audio input pins
7
&
8
. The audio output pins
9
&
10
connect to the audio input of a paging amplifier.
Operation
D. Telephone Recording Disclosure Tone
In some states, to legally record a tele-
phone conversation, both parties must be
alerted to the fact that you are recording
their conversation. One common method
of reminding callers that they are being
recorded is to provide a periodic alert tone
during the call. To create a telephone
recording disclosure tone at 15 second in-
tervals, wire the
MTG-10
as shown below.
Then jumper pins
1
and
5
with pin
6
. When
the unit is then powered up, it will go into
alert tone mode.
12V DC
Adapter
Included
120V AC
1 2 3 4 5 6 7 8 9 10
C.O. Line
or analog
PABX/KSU
Station
Standard
Telephone
Recording Device
(tape recorder shown,
not included)
ON
1
23
Applications
A. Amplifying the MTG-10 Tones with a PA-2A
In this application, the tones from the
MTG-10
are amplified by a Viking
PA-2A
Paging/Loud Ringing Amplifier.
Whenever the
MTG-10
receives a contact closure on one of its inputs, it generates the selected tone. Whether
the paging amp amplifies the tone when other inputs are activated depends on the the priority the paging amp
places on this particular input. If the
MTG-10
has been installed to generate emergency tones, its output should
have top priority so that any emergency tone will be amplified and sent to the paging speakers.
B. Tone Generation and Paging
The
MTG-10
can be installed in between a phone system’s paging port and a paging amplifier. Connect the paging
port to pins
7
&
8
. The audio output pins
9
&
10
go to the paging amplifier’s input. When the
MTG-10
is idle, pages
will pass through it to the amplifier. When the
MTG-10
receives a contact closure, it will interrupt any paging audio
and play the associated tone for the duration of the closure.
