Viking ZPI-4 Instructions for use

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Power: 120V AC/13.8V AC, 1.25A adapter provided
Dimensions: 211mm x 160mm x 46mm (8.30" x 6.30" x 1.80")
Shipping Weight: 1.5 kg (3.2 lbs)
Environmental: 0° C to 32° C (32° F to 90° F) with 5% to 95%
non-condensing humidity
Relay Contacts: 5 Amps@30V DC/250V AC each (200w@8Ω)
REN: 0.5 A
Artificial Talk Battery Voltage: 24V DC
Connections: (32) cage clamp screw terminals
Four Zone Paging Interface
tact closure, a ringing C.O. or a ringing analog PABX/KSU station.
The ZPI-4 is compatible with ringing C.O. lines, Centrex lines and analog PABX/KSU station
ports (disconnects on silence, CPC, busy or time-out) as well as unused trunk inputs, and will
interface directly with standard pag-
ing ports.
• Touch Tone control of four zones, expandable to
8 zones
• Switches line level signal to amplifiers or amplified
signal to speakers (amplifier(s) not included)
• Balanced audio circuitry for low noise
• Night bell warble with adjustable level from con-
tact closure or ringing analog line
• Input provided for background music
• Separate paging and background music level
adjustments
• Background music automatically mutes in paged
zone(s) in all but single amplifier mode
• All-call and five group call patterns, selected by
Touch Tones
• Adjustable page alert tone level
• Interfaces with ringing C.O. lines, Centrex lines,
and analog station ports, paging ports and
unused phone system trunk ports
• Disconnects on silence, CPC, busy or time-out
• Screw terminals for all input/output connections
• Compatible with Viking’s FBI-1A Anti-Feedback
Paging Interface (Fax Back Document 465)
The ZPI-4 is a four-zone Touch Tone controlled paging
system capable of switching a line level signal (600
ohms) to amplifiers, 70V signal to speakers or an ampli-
fied signal (200 watts maximum into 8 ohms) to speakers.
The ZPI-4 features balanced audio circuitry throughout
for low noise and compatibility with balanced paging sys-
tem inputs and outputs.There are separate level controls
for paging and background music, and background music
can be disabled on a per-zone basis. Also provided is a
night bell with adjustable volume activated by a dry con-
F
Fe ea at tu ur re es s
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Sp pe ec ci if fi ic ca at ti io on ns s
ZPI-4
ZPI-4
Four Zone
Paging Interface
August 16, 2002
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EN NT TU UR RY Y
TECHNICAL
TECHNICAL
• Multiple zone paging for Centrex systems
• Multiple zone paging for phone systems with pag-
ing ports, unused analog station ports or unused
trunk inputs
• Multiple department manufacturing business
• Multilevel warehouse
• Multi building office complex
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MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
Min Max
Ring Trip or
Trunk/Page Port
Selection
Talk Battery
ON/OFF
Time Out
Adjustment
Min Max
Zone 4 Music Shunts
Zone 4 Output
Zone 3 Music Shunts
Zone 3 Output
Zone 2 Music Shunts
Zone 2 Output
Zone 1 Music Shunts
Zone 1 Output
VOX
Sensitivity
ZONE 1 ZONE 2 ZONE 3 ZONE 4
MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
Volume Controls
Min Max
Telco In
Telco Out
Music In
Music Out
Input Contacts
Output Contacts
Night Ring
Night Contacts
In From Amp's (-) Output
In From Amp's (+) Output
Out To Amp's (-) Input
Out To Amp's (+) Input
In From Amp's (-) Output
In From Amp's (+) Output
Out To Amp's (-) Input
Out To Amp's (+) Input
Note: Remove these shunts to eliminate background
music for each zone individually.
IMPORTANT: Electronic devices are susceptible to lightning and power station electrical surges from both the AC outlet and the
telephone line. It is recommended that a surge protector be installed to protect against such surges. Contact Panamax at (800)
472-5555 or Electronic Specialists Inc. at [phone].
!
MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
1 2 3 4
ON DIP
ON
OFF
OFF ON
Talk
Battery
Ring
Trip
Ring Trip
Selection
Trunk/
Page
Port
Switch
1
2
3
4
ON/OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Description
Single amplifier
Two or more amplifiers
Two units
Single unit
Slave unit
Master unit
Dial tone enabled
Dial tone disabled
Note: DIP switches should be set prior to pow-
ering up the ZPI-4. If power has already been
applied, momentarily power down the unit so
the switches will take effect.
Diagram 1 Diagram 2
Diagram 3 Diagram 4 (see Diagram 3)
2.

HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
IN
FROM
AMP S
()
OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
VOLUME
PAG E
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
1 2 3 4
ON DIP
ON
OFF
Min Max
Time Out
Adjustment
Min Max
VOX
Sensitivity
OFF ON
Talk
Battery
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
IN
FROM
AMP S
()
OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
VOLUME
PAG E
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
Tip
Ring
To Phone System's Night
Ring Contact Closure
To Phone System's Night
Ring Output
To Background
Music Source
C.O. Line or
Analog
PABX/KSU
Station
Ring
Trip
Paging
Selection
Trunk/
Page Port
A. System Interface
2. Paging from an Unused Phone System Trunk Input
Note: In this mode, the ZPI-4’s time out and VOX sensitivity are disabled. The ZPI-4 will release the trunk as soon
as the paging party hangs up.
Step 1. Set the RING TRIP/TRUNK/PAGE PORT switch to the RING TRIP position (all the way to the left).
Step 2. Set the TALK BATT switch to the OFF position (all the way to the left).
Step 3. Attach TIP and RING to the TELCO IN screw terminals.
Step 4. Attach the background music source, if used, to the MUSIC IN screw terminals.
Step 5. Adjust the TIME OUT ADJUST as required (adjustable from approximately 5 seconds to 80 seconds). This should
be set to a second or two longer than the longest expected page. The ZPI-4 hangs up when this timer is up, and
if the timer is set for too short a time, the ZPI-4 will hang up in the middle of a page.
Notes: The VOX SENSITIVITY probably will not have to be adjusted unless the ZPI-4 is disconnecting in the
middle of a page, before the time out or there is a period of silence during a page longer than three seconds
and the ZPI-4 does not auto-disconnect.
To adjust the VOX SENSITIVITY, turn the POT counter clockwise to decrease the VOX sensitivity and clockwise
to increase it. The VOX SENSITIVITY should be increased if the ZPI-4 is auto-disconnecting in the middle of
pages, and decreased if it is not auto-disconnecting on busy signals or periods of silence more than three seconds.
Step 6. If the phone system provides a contact closure for night ring, connect a pair of wires from this closure to the NIGHT
CONTACTS screw terminals. If the phone system provides ring signal for night ring, hook up a pair of wires from
the phone system night ring output to the NIGHT RING screw terminals.
Step 7. Select dial tone if desired by putting DIP switch 4 to ON, otherwise turn it OFF.
Step 1. Set the RING TRIP/TRUNK/PAGE PORT switch to the TRUNK/PAGE PORT position (all the way to the right).
Step 2. Set the TALK BATT switch to the ON position (all the way to the right).
Step 3. Attach TIP and RING to the TELCO IN screw terminals.
Step 4. Attach the background music source, if required, to the MUSIC IN screw terminals.
Step 5. If the phone system provides a contact closure for night ring, connect a pair of wires from this closure to the
NIGHT CONTACTS screw terminals. If the phone system provides ring signal for night ring, hook up a pair of
wires from the phone system night ring output to the NIGHT RING screw terminals.
Step 6. Dial tone may be enabled as shown in Diagram 4.
1. Ring Trip Paging
POWER
13.8 VAC
PWR 1 2 3 4
()
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
PAG E
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
1 2 3 4
ON DIP
ON
OFF
OFF ON
Talk
Battery
POWER
13.8 VAC
PWR 1 2 3 4
()
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
To Phone System's Night
Ring Contact Closure
To Phone System's Night
Ring Output
To Background
Music Source
Unused
PABX/KSU
Trunk Port
Ring
Trip
Paging
Selection
Trunk/
Page Port
Diagram 5
Diagram 6
3.

Note: You must be able to send Touch Tones through the PABX’s paging port for this mode to work.
Step 1. Set the RING TRIP/TRUNK/PAGE PORT switch to the TRUNK/PAGE PORT position (all the way to the right).
Step 2. Set the TALK BATT switch to the OFF position (all the way to the left).
Step 3. Attach a pair of wires from the paging port to the TELCO IN screw terminals.
Step 4. Attach the background music source, if required, to the MUSIC IN screw terminals.
Step 5a. If the phone system provides a page dry contact closure for paging, connect a pair of wires from this closure to
the INPUT CONTACTS screw terminals of the ZPI-4. In this application, the ZPI-4’s time out and VOX sensitivity
are disabled. The ZPI-4 will release the page port as soon as its INPUT CONTACTS open.
Step 5b. If the phone system does not provide a page dry contact closure, adjust the TIME OUT ADJUST as required
(adjustable from approximately 5 seconds to 80 seconds). This should be set to a second or two longer than the
longest expected page. The ZPI-4 hangs up when this time is reached, and if the timer is set too short, the ZPI-4
will hang up in the middle of a page.
Notes: The VOX SENSITIVITY probably will not have to be adjusted unless the ZPI-4 is disconnecting in the
middle of a page, before the time out or there is a period of silence during a page longer than three seconds
and the ZPI-4 does not auto-disconnect.
To adjust the VOX SENSITIVITY, turn the POT counter clockwise to decrease the VOX sensitivity and clockwise
to increase it. The VOX SENSITIVITY should be increased if the ZPI-4 is auto-disconnecting in the middle of
pages, and decreased if it is not auto-disconnecting on periods of silence longer than three seconds.
Step 6. If the phone system provides a contact closure for night ring, connect a pair of wires from this closure to the
NIGHT CONTACTS screw terminals. If the phone system provides ring signal for night ring, connect a pair of
wires from the phone system night ring output to the NIGHT RING screw terminals.
Step 7. Put DIP switch 4to OFF to disable the ZPI-4’s dial tone.
3. Paging from a Phone System’s 600 Ohm Paging Port
B. Amplifier Configuration
In this mode, each paging zone has its own amplifier, and the func-
tion 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:
1. Four Amplifier Mode
MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
ZONE 1 ZONE 2 ZONE 3 ZONE 4
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 amp-
lifier 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.
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL
MUSIC
AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
PAG E
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 + - + - + - + -
ON
1 2 3 4
ON DIP
ON
OFF
OFF ON
Talk
Battery
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL
MUSIC
AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 + - + - + - + -
ON
To Background Music Source
Min Max
Time Out
Adjustment
Min Max
VOX
Sensitivity
Note: The Time Out Adjustment is ONLY
to be used when the Phone System's Dry
Contact Closure is NOT used.
To Phone System's Night
Ring Contact Closure
To Phone System's Night
Ring Output
PABX/KSU
Page Port
Ring
Trip
Paging
Selection
Trunk/
Page Port To Phone System's Page
Dry Contact Closure
Diagram 7
Diagram 8
4.

In this mode, one external amplifier handles both paging and background music. An internal relay capable of switch-
ing between paging signal and music signal sends input to this amp, the amplified signal is returned and the ZPI-4
sends it to the correct zone(s).
Advantages: Any size amplifier may be used when driving 70V
speakers, only one amplifier is required.
Limitations: The amplifier needs to be limited to 200 watts, each
speaker zone is limited to an 8 ohm minimum impedance, the
amplifier must be able to drive the speakers of all zones (Example:
4 zones at 8 ohms per zone equals a 2 ohm load during an all
call); if background music is used, all zones will receive back-
ground music and it will be muted in all zones during a page.
To set up the ZPI-4 in the single amplifier mode:
3. Single Amplifier Mode
MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
ZONE 1 ZONE 2 ZONE 3 ZONE 4
1 2 3 4 5 6 7 8
Paging
Amplifier
(not included)
Input
Output
Zone 1
Zone 2
Zone 3
Zone 4
Important: If a background music amplifier is not installed and
background music is required, install the Optional Background
Music jumpers as shown above.
In the two amplifier mode, one amp serves as the paging amplifier and the other as the background music ampli-
fier. 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: Any size 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 mini-
mum 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:
2. Two Amplifier Mode (Paging and Music)
MODEL ZPI-4
VIKING©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
POWER
13.8 VAC
PWR 1 2 3 4
OPTIONAL PAGING AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
ON
ZONE 1 ZONE 2 ZONE 3 ZONE 4
1 2 3 4 5 6 7 8
Music
Amplifier
(not included)
Paging
Amplifier
(not included)
Input
Output
Input
Output
Zone 1
Zone 2
Zone 3
Zone 4
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 back-
ground 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.
Diagram 9
Diagram 10
5.
Step 1. Attach ZONE 1 screw terminals to the speaker(s) for Zone 1.
Step 2. Repeat step 2 for each of the remaining three zones.
Step 3. Attach the paging amp as shown in the diagram.
Step 4. If a background music source is being used, install the Optional
Background Music Amplifier jumpers as shown..
Step 5. Set DIP switch 1 to the ON position. This tells the ZPI-4 that
it is operating in the single amplifier mode.