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Viking ZPI-4 Technical Practice
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Viking ZPI-4 Technical Practice

Four zone paging interface
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TECHNICAL
TECHNICAL
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sure, 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 paging ports.
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• 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)
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Four Zone Paging Interface
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The ZPI-4 is a four-zone Touch Tone controlled paging sys-
tem capable of switching a line level signal (600 ohms) to
amplifiers, 70V signal to speakers or an amplified 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 system
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 contact clo-
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• 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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Power: 120V AC/13.8V AC, 1.25A adapter provided
Dimensions: 210mm x 159mm x 45mm (8.25" x 6.25" x 1.75")
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: (34) cage clamp screw terminals
Four Zone
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Paging Interface
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ZPI-4
ZPI-4
July 11, 2000
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Summary of Contents for Viking ZPI-4

  • Page 1 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 paging ports.
  • Page 2 A. Four Amplifier Mode 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.
  • Page 3 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.
  • Page 4 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.

  • Page 5: Multiple Units

    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.

  • Page 6: Initiating A Page

    When finished paging, simply hang up. Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking Electronics, and its affiliates and/or subsidiaries assume no responsibility for errors and omissions contained in this information.