Multiple Units - Viking ZPI-4 Technical Practice

C. Multiple Units
While the ZPI-4 is a four zone paging unit, it may be cascaded with an additional ZPI-4 for a total of up to eight paging
zones. The first ZPI-4 is considered the "Master" unit, and the other unit is considered a "Slave".
ON ON DIP
OFF 1 2 3 4
On the Master Unit:
the Ring Trip Selection, Talk
Battery, VOX Sensitivity and
Time Out Adjustment as
Installation
shown in
section B. Amplifier Con-
figuration, sections 1-3.
Step 1. Install the Master unit as explained in section A. System Interface.
Step 2. Select an amplifier mode, shown in Installation section B. Amplifier Configuration, sections 1-3.
Step 3. Set DIP switch 2 to ON for both the Master and Slave. This sets both ZPI-4s for multiple units.
Step 4. On the Slave unit, set DIP switch 3 to ON. On the Master unit, leave OFF.
Step 5. If dial tone is desired, set DIP switch 4 on the Master unit to ON. This will enable dial tone for both units. On the
Slave unit, DIP switch 4 should remain OFF.
Step 6. On the Slave unit, set the RING TRIP/TRUNK/PAGE PORT switch to the same as the Master.
Step 7. On the Slave unit, set the TALK BATTERY switch to OFF.
Step 8. Connect a pair of wires from the TELCO OUT of the Master to the TELCO IN of the Slave.
Step 9. Connect a pair of wires from the MUSIC OUT of the Master to the MUSIC IN of the Slave.
Step 10. Connect a pair of wires from the OUTPUT CONTACTS of the Master to the INPUT CONTACTS of the Slave.
Step 11. If night warble is desired through the Slave's zones, connect a pair of wires from the NIGHT RING or NIGHT
CONTACTS (depending on which application you are using) of the Master to the NIGHT RING or NIGHT CONTACTS
of the Slave.
Note: In the Trunk/Page Port mode, the Slave's night warble volume should be set to minimum (fully counter-clock
wise). The Master's night warble volume will control the Slave's zones. In Ring Trip mode, the Master and Slave's
night warble volumes will work independently.
Step 12. Set the TIME OUT ADJUSTMENT on the Slave to the maximum time (clockwise).
Step 13. Plug the power supply adapter into the power jack of the Slave, and the other end into a wall outlet.
6.
Master Unit
VIKING
MODEL ZPI-4
©
FOUR ZONE PAGING INTERFACE
VIKING
OPTIONAL PAGING AMP
ELECTRONICS
IN FROM AMP'S (-) OUTPUT
HUDSON, WI 54016
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
OPTIONAL MUSIC AMP
POWER
IN FROM AMP'S (-) OUTPUT
13.8 VAC
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
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
PWR 1 2 3 4
ON
Set
Diagram 11
NIGHT
WARBLE
VOLUME
PAGE
ALERT
VOLUME
PAGE
VOLUME
MUSIC
VOLUME
ON ON
+ - + - + - + -
OFF 1 2 3 4
Set the Ring Trip/Trunk/Page Port
identical to the Master Unit
Set the Talk Battery
Switch to OFF
Slave Unit
VIKING
©
FOUR ZONE PAGING INTERFACE
VIKING
ELECTRONICS
HUDSON, WI 54016
OPTIONAL MUSIC AMP
POWER
IN FROM AMP'S (-) OUTPUT
13.8 VAC
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
NIGHT CONTACTS
NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
DIP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
PWR 1 2 3 4
ON
Talk
Battery
OFF ON
MODEL ZPI-4
NIGHT
WARBLE
VOLUME
PAGE
OPTIONAL PAGING AMP
ALERT
IN FROM AMP'S (-) OUTPUT
VOLUME
IN FROM AMP'S (+) OUTPUT
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
PAGE
VOLUME
MUSIC
VOLUME
+ - + - + - + -
Time Out
Adjustment
Min Max