Amplifier Configuration - Viking ZPI-4 Technical Practice

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.
Diagram 7
ON ON DIP
OFF
1 2 3 4
Paging
Selection
Ring Trunk/
Trip Page Port
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 4 to OFF to disable the ZPI-4's dial tone.
B. Amplifier Configuration
1. Four Amplifier Mode
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:
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.
4.
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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
PWR
ON
Talk
VOX
Battery
Sensitivity
OFF ON
Min Max
POWER
PAGE
13.8 VAC
VOLUME
MUSIC NIGHT CONTACTS
VOLUME NIGHT RING
OUTPUT CONTACTS
INPUT CONTACTS
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4
PWR
ON
PABX/KSU
Page Port
Time Out
Adjustment
To Background Music Source
Note: The Time Out Adjustment is ONLY
to be used when the Phone System's Dry
Min Max
Contact Closure is NOT used.
VIKING
POWER
13.8 VAC
NIGHT CONTACTS
OUTPUT CONTACTS
INPUT CONTACTS
PWR
OPTIONAL MUSIC AMP
IN FROM AMP'S (-) OUTPUT
PAGE
IN FROM AMP'S (+) OUTPUT
VOLUME
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
MUSIC
VOLUME
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 + - + - + - + -
To Phone System's Night
Ring Contact Closure
To Phone System's Night
Ring Output
To Phone System's Page
Dry Contact Closure
Diagram 8
MODEL ZPI-4
©
NIGHT
FOUR ZONE PAGING INTERFACE
WARBLE
VOLUME
VIKING
OPTIONAL PAGING AMP
ALERT
ELECTRONICS
IN FROM AMP'S (-) OUTPUT
VOLUME
HUDSON, WI 54016
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
VOLUME
OUT TO AMP'S (-) INPUT
OUT TO AMP'S (+) INPUT
MUSIC
NIGHT RING VOLUME
MUSIC OUT
MUSIC IN
TELCO OUT
TELCO IN
1 2 3 4 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)
PAGE
PAGE
1 2 3 4 5 6 7 8
Optional Paging
Background Amplifier
Music Amplifier Jumpers
Jumpers