B. Amplifier Configuration
1. Four Amplifier Mode
2. Two Amplifier Mode (Paging and Music)
In this mode, each paging zone has its own amplifier, and the function of the
ZPI-4
is to switch the unamplified
paging or background music signal to the appropriate amplifier.
Advantages:
There is no amplifier power
limitation, zones can be set to different
volumes, background music is selectable per
zone and the non-paged zones will continue to
get music during a page.
To set the
ZPI-4
up in the four amplifier mode:
©
MODEL ZPI-4
VIKING
ELECTRONICS
HUDSON, WI 54016
FOUR ZONE PAGING INTERFACE
OPTIONAL MUSIC AMP
OUT TO AMP'S (+) INPUT
OUT TO AMP'S (-) INPUT
IN FROM AMP'S (+) OUTPUT
IN FROM AMP'S (-) OUTPUT
TELCO IN
TELCO OUT
MUSIC IN
MUSIC OUT
INPUT CONTACTS
OUTPUT CONTACTS
NIGHT RING
NIGHT CONTACTS
POWER
13.8 VAC
PWR
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
+
+
+
+
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
OPTIONAL PAGING AMP
OUT TO AMP'S (+) INPUT
OUT TO AMP'S (-) INPUT
IN FROM AMP'S (+) OUTPUT
IN FROM AMP'S (-) OUTPUT
VIKING
Paging
Amplifier
(not included)
Paging
Amplifier
(not included)
Paging
Amplifier
(not included)
Paging
Amplifier
(not included)
1 2 3 4 5 6 7 8
Paging
Amplifier
Jumpers
Optional
Background
Music
Amplifier
Jumpers
Step 1.
Attach the ZONE 1 screw terminals to the
input of the ampllifier for Zone 1.
Step 2.
If background music is to be enabled on
this zone, ensure that the ZONE 1 music
shunts are in place, covering both pins. If
not, remove the shunts.
Step 3.
Repeat steps 1 and 2 for each of the
remaining three zones.
Step 4.
Install the included jumpers across the
Optional Paging Amp screw terminals.
Step 5.
If a background music source is being
used, install the Optional Background
Music Amplifier jumpers as shown.
Step 6.
Set DIP switch 1 to OFF.
Step 7.
Connect Paging Amps between zone
outputs and speakers.
Step 1.
Attach the ZONE 1 screw terminals to the
speaker(s) for Zone 1.
Step 2.
If background music is to be enabled on
this zone, ensure that the ZONE 1 music
shunts are in place, covering both pins. If
background music is not desired, remove
the shunts.
Step 3.
Repeat steps 1 and 2 for each of the
remaining three zones.
Step 4.
Attach the paging amplifier and the music
amplifier as shown in the diagram.
Step 5.
Set DIP switch 1 to OFF.
In the two amplifier mode, one amp serves as the paging amplifier and the other as the background music
amplifier. The paging or music signal is sent to the external amplifier, returned and the amplified signal is
switched by the
ZPI-4
to the correct zone or zones.
Advantages:
Up to a 350 watt amplifier may be used when driving 70V speakers, only (2) amplifiers (or one
stereo amp) are required for 4 zones, background music is selectable per zone, and the non-paged zones
will continue to to get music during a page.
Limitations:
The paging amp needs to be
limited to 200 watts and the music amp needs
to be limited to 70 watts when switching 8 ohm
speaker loads, each speaker zone is limited to
8 ohms minimum impedance and the amp must
have the ability to drive the speakers of all
zones. (Example: 4 zones at 8 ohms per zone
equals a 2 ohm load during an all call.)
To set up the
ZPI-4
in the two amplifier mode:
Zone 1
Zone 2
Zone 3
Zone 4
©
MODEL ZPI-4
VIKING
ELECTRONICS
HUDSON, WI 54016
FOUR ZONE PAGING INTERFACE
OPTIONAL MUSIC AMP
OUT TO AMP'S (+) INPUT
OUT TO AMP'S (-) INPUT
IN FROM AMP'S (+) OUTPUT
IN FROM AMP'S (-) OUTPUT
TELCO IN
TELCO OUT
MUSIC IN
MUSIC OUT
INPUT CONTACTS
OUTPUT CONTACTS
NIGHT RING
NIGHT CONTACTS
POWER
13.8 VAC
PWR
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
+
+
+
+
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
OPTIONAL PAGING AMP
OUT TO AMP'S (+) INPUT
OUT TO AMP'S (-) INPUT
IN FROM AMP'S (+) OUTPUT
IN FROM AMP'S (-) OUTPUT
VIKING
1 2 3 4 5 6 7 8
Music
Amplifier
(not included)
Paging
Amplifier
(not included)
Input
Output
Input
Output
4
