Viking ZPI-4 Manuel d'utilisateur télécharger pdf (Page 5)

B. 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 pag-

ing zones. The first ZPI-4 is considered the “Master” unit, and the other unit is considered a “Slave”. To use the ZPI-

4 in this way, install the Master unit and then use the following directions to install the Slave unit.

1. Select an amplifier mode, shown in Installation sections A-C.

2. Set DIP switch 2 to ON for both the Master and Slave. This sets both ZPI-4s for multiple units.

3. On the Slave unit, set DIP switch 3 to ON. On the Master unit, leave OFF.

4. 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.

5. On the Slave unit, set the RING TRIP/TRUNK/PAGE PORT switch to the same as the Master.

6. On the Slave unit, set the TALK BATTERY switch to OFF.

7. Connect a pair of wires from the TELCO OUT of the Master to the TELCO IN of the Slave.

8. Connect a pair of wires from the MUSIC OUT of the Master to the MUSIC IN of the Slave.

9. Connect a pair of wires from the OUTPUT CONTACTS of the Master to the INPUT CONTACTS of the Slave.

10. 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 CON-

TACTS 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.

11. Set the TIME OUT ADJUSTMENT on the Slave to the maximum time (clockwise).

12. Plug the power supply adapter into the power jack of the Slave, and the other end into a wall outlet.

3. Paging from a Phone System’s 600 Ohm Paging Port

Note: You must be able to send Touch Tones through the PABX’s paging port for this mode to work.

a. Set the RING TRIP/TRUNK/PAGE PORT switch to the TRUNK/PAGE PORT position.

b. Set the TALK BATT switch to the OFF position.

c. Hook up a pair of wires from the paging port to the TELCO IN screw terminals.

d. Hook up the background music source, if used, to the MUSIC IN screw terminals.

e. If the phone system provides a page dry contact closure, connect a pair of wires from this closure to the INPUT

CONTACTS screw terminals. 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.

f. 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 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.

The VOX SENSITIVITY probably will not have to be adjusted unless the ZPI-4 is disconnecting in the middle of

pages and this is happening before the time set by the TIME OUT ADJUST or there is a period of silence dur-

ing 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 decreased if the ZPI-4 is auto-disconnecting in the middle of

pages, and increased if it is not auto-disconnecting on periods of silence longer than three seconds.

g. 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.

h. Put DIP switch 4 to OFF to disable the ZPI-4’s dial tone.

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Viking ZPI-4 Manuel d'utilisateur Page 5

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