CPA-7B
Telecommunication Peripheral Products
General Purpose
Telecom Paging System
January 7, 1999
Technical Practice
Add Paging, Loud Ringing and Background
Music to Centrex, PABX’s or Key Systems
The CPA-7B is a cost effective, multi- purpose, telecom
paging system.
The CPA-7B features a low noise, high fidelity amplifier,
providing 6 watts of power for a variety of telecom paging
applications. It can also provide background music and
night bell/common audible. In addition, multiple units
may be daisy-chained for larger paging applications.
Compatible with ringing C.O. lines, Centrex lines and
analog PABX/KSU station poratsdjuastawbelell as unused trunk inputs, the CPA-7B will also
interface directly with standard paging ports. For loud ringing, the CPA-7B generates
an adjustable loud warble from a dry contact closure, a ringing C.O. or a ringing analog
PABX/KSU station.
The CPA-7B is easy to install and can eliminate the installation of multiple bells, relays
and paging cards.
Features
Applications
• 6 watts of paging power (powers up to (8) 8
ohm horns/speakers)
• Paging and loud ringing for Centrex systems
• Paging and loud ringing for phone systems with
paging ports, unused analog station ports or
unused trunk inputs
• Increased audio fidelity with low noise
amplifier
• Interfaces with ringing C.O. lines, Centrex lines,
paging ports, unused phone system trunk
inputs, or ringing analog station ports
• 600 ohm audio output to connect multiple
CPA-7B’s for larger paging applications
• (1) 8 ohm 25AE paging horn included
• Day/night switchable for paging/loud ring
• Ringing/alert tone volume adjustment
• Paging volume adjustment
• Selectable ring trip paging and night bell
• Background music is muted during page
• 10 pin cage clamp terminal strip for easier
wiring
Sales...(715) 386 - 8861
Made in the U.S.A.
Specifications
Power: 120V AC/13.8V AC 1.25 A, UL listed adapter provided
Amplifier: 6 watts - to power up to (8) 8 ohm speakers
(cascadable to drive additional speakers)
Dimensions: 133 mm x 89 mm x 44 mm (5.25” x 3.5” x 1.75”)
Shipping Weight: 1.36 kg (3 lbs)
Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-
condensing humidity
• Provides “Night Bell” warble tone via contact
closure or ringing analog circuit
• Provides page “Alert” tone before paging
• Adjustable ring trip paging time out for auto
disconnect
Speakers: (1) 25AE paging horn provided
Sound Pressure Level: 110dB, 1KHz @ 1m with (1) 25AE
Paging Horn (included), each additional horn will drop the output
level of all horns by 1dB
Maximum Speaker Cable Length: 91 m (300 ft) 18 AWG
Connections: (1) RJ11 jack, (1) 3.5mm (1/8”) audio jack, (1)
2.1mm barrel jack
• Audio patch cord provided
Talk Battery Output: 19V DC (loop current 36mA nominal)
C. Paging from an Unused Phone System Trunk Input
1. Set the MODE SWITCH to the TRUNK/PAGING PORT position.
2. Adjust the RING TRIP TIME OUT POT to its maximum (fully clockwise) position.
3. Connect terminal 8 to 5 to provide talk battery on the PAGING INPUT PORT.
4. Connect the unused trunk port to the PAGING INPUT PORT.
Note: If both paging and loud common audible are required, connect the night transfer switch (optional), the phone
system common audible dry contacts and jumper terminal 6 to 7 as shown below.
Caution: Do NOT connect speakers with a combined parallel impedance of less than 1 ohm. To power more
speakers, see Installation/Applications section F.
Note: The “Common Audible” contact
VIKING©
MODEL CPA-7B
PAGING
VOLUME
closure (below) will activate during
incoming ring on the phone system’s
line inputs (programmable on many
systems). Night bell (electronic warble
tone) will then be broadcast in
cadence with the incoming ring.
RING/ALERT TONE
VOLUME
VIKING
ELECTRONICS
HUDSON, WI 54016
Unused Phone
System (PABX/KSU)
Trunk Input
MIN MAX
MIN MAX
GENERAL PURPOSE TELECOM
PAGING SYSTEM
-
MODE SWITCH
TRUNK/PAGING PORT
RING TRIP
1
2
3
4
5
6
7
8
9
10
Night Transfer Switch
(not included)
PAGING MUSIC TIME
INPUT
INPUT OUT
Phone System
Common Audible
RING TRIP
N.O.
Dry Contact
Closure
(see Note above)
TIME OUT
Adjustment
POT
Background
Music Source
30AE
30AE
6 ft audio
patch cord (included)
25AE
25AE
Up to (8) 8 ohm
speakers may
be connected
in parallel.
D. Paging from a Phone System’s 600 Ohm Paging Port (with page dry contact closure provided)
1. Set the MODE SWITCH to the TRUNK/PAGING PORT position.
2. Adjust the RING TRIP TIME OUT POT to its maximum (fully clockwise) position.
3. Connect the phone system’s paging port to the PAGING INPUT PORT.
4. Connect the phone system’s paging dry contacts to terminals 5 and 7. The contact closure will activate the alert
tone for paging and mute the background music.
Note: If both paging and loud common audible are required, wire the night transfer switch (optional) to the phone
system’s common audible dry contacts and jumper terminals 9 to 6 as shown below.
Caution: Do NOT connect speakers with a combined parallel impedance of less than 1 ohm. To power more
speakers, see Installation/Applications section F.
Note: The “Page” contact closure
(below) will initiate paging from the
VIKING© MODEL CPA-7B
PAGING
VOLUME
RING/ALERT TONE
VOLUME
phone system’s paging port. The
“Common Audible” contact closure
(below) will activate during incoming
ring on the phone system’s line inputs
(programmable on many systems).
Night bell (electronic warble tone) will
then be broadcast in cadence with the
incoming ring.
VIKING
Phone System
(PABX/KSU)
Paging Port
ELECTRONICS
HUDSON, WI 54016
MIN MAX
MIN MAX
Background
Music Source
GENERAL PURPOSE TELECOM
PAGING SYSTEM
-
MODE SWITCH
TRUNK/PAGING PORT
RING TRIP
1
2
3
4
5
6
7
8
9
10
PAGING MUSIC TIME
INPUT INPUT OUT
RING TRIP
TIME OUT
Adjustment
POT
Page
N.O.
(see Note above)
6 ft audio
patch cord (included)
Phone System
Dry Contact
Closures.
30AE
30AE
25AE
25AE
Common Audible
(see Note above)
Up to (8) 8 ohm
speakers may
be connected
in parallel.
N.O.
Night Transfer Switch
(not included)
E. Paging from a Phone System’s 600 Ohm Paging Port
1. If the phone system does NOT provide a dry contact closure on “Page”, connect the paging port to the 3.5mm
(1/8”) music input jack.
2. If loud common audible is required, connect the night transfer switch (optional), the phone system’s common
audible dry contacts and jumper terminals 6 to 7 as shown below.
Note: The CPA-7B can NOT provide background music or alert tones in this application.
Caution: Do NOT connect speakers with a combined parallel impedance of less than 1 ohm. To power more
speakers, see Installation/Applications section F.
VIKING© MODEL CPA-7B
Note: The “Common Audible” contact
closure (below) will activate during
incoming ring on the phone system’s
line inputs (programmable on many
systems). Night bell (electronic warble
tone) will then be broadcast in
cadence with the incoming ring.
PAGING
VOLUME
RING/ALERT TONE
VOLUME
VIKING
ELECTRONICS
HUDSON, WI 54016
MIN MAX
MIN MAX
GENERAL PURPOSE TELECOM
PAGING SYSTEM
Phone System
(PABX/KSU) Paging
Port
-
MODE SWITCH
TRUNK/PAGING PORT
RING TRIP
1
2
3
4
5
6
7
8
9
10
PAGING MUSIC TIME
INPUT
INPUT OUT
Night Transfer Switch
(not included)
Phone System
RING TRIP
TIME OUT
Adjustment
POT
Common Audible
N.O.
Dry Contact
Closure
(see Note above)
6 ft audio
patch cord (included)
30AE
30AE
Note: For a RCA to stereo plug adapter,
25AE
25AE
Up to (8) 8 ohm
speakers may
be connected
in parallel.
order Radio Shack part #274-387.
F. Cascading Multiple CPA-7B’s to Drive Additional Speakers
An infinite number of CPA-7B’s may be daisy-chained together to a master CPA-7B to drive additional speakers as
required. Only the master CPA-7B should be connected to the paging source, background music, phone system’s
dry contact closures, etc. The master CPA-7B controls the paging and ring/alert tone volume for all units. Set
paging control volume on all slave units to the maximum position. Connect as shown below.
Master CPA-7B
VIKING©
VIKING©
VIKING©
MODEL CPA-7B
MODEL CPA-7B
MODEL CPA-7B
C.O. line, Centrex
line, Phone
PAGING
VOLUME
RING/ALERT TONE
VOLUME
PAGING
VOLUME
RING/ALERT TONE
VOLUME
PAGING
VOLUME
RING/ALERT TONE
VOLUME
Systems Analog
Station, Trunk or
Paging Port
VIKING
VIKING
VIKING
ELECTRONICS
ELECTRONICS
ELECTRONICS
HUDSON, WI 54016
HUDSON, WI 54016
HUDSON, WI 54016
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
GENERAL PURPOSE TELECOM
PAGING SYSTEM
GENERAL PURPOSE TELECOM
PAGING SYSTEM
GENERAL PURPOSE TELECOM
PAGING SYSTEM
-
-
-
MODE SWITCH
MODE SWITCH
MODE SWITCH
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
TRUNK/PAGING PORT
RING TRIP
TRUNK/PAGING PORT
RING TRIP
TRUNK/PAGING PORT
RING TRIP
PAGING
INPUT
MUSIC
INPUT
TIME
OUT
PAGING
INPUT
MUSIC
INPUT
TIME
OUT
PAGING
INPUT
MUSIC
INPUT
TIME
OUT
Connect according
to your application
Not Used
Not Used
Adjust
according
to your
To
Additional
CPA-7B’s
application
6 ft audio patch cord
(included)
6 ft audio patch cord
(included)
Background
Music Source
Note: One end of the Audio Cord must be cut and
wired directly to pins 3 and 4 to use multiple CPA-7B’s.
Note: One end of the Audio Cord must be cut and
wired directly to pins 3 and 4 to use multiple CPA-7B’s.
Note: If a lower volume
setting is desired on one
slave unit, it must be
connected as the last unit
in the chain.
Additional
Horns or
Speakers
Additional
Horns or
Speakers
Additional
Horns or
Speakers
Up to (8) 8 ohm speakers
may be connected in parallel
Up to (8) 8 ohm speakers
may be connected in parallel
Up to (8) 8 ohm speakers
may be connected in parallel
Product Support Line...(715) 386-8666
Fax Back Line...(715) 386-4345
Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking
Electronics, its affiliates and/or subsidiaries assume no responsibility for errors and/or omissions contained in this information. Revisions of
this document or new editions of it may be issued to incorporate such changes.
ZF301200 Rev A
Fax Back Doc # 455
Printed in the U.S.A.
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