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TECHNICAL
TECHNICAL
SP393
SP393
Anti-Feed back
Paging Interface
June 25, 2012
Totally Eliminate Paging Feedback
Even the best designed paging systems can
experience feedback. Now you can eliminate
annoying feedback over your paging speakers with Viking’s model SP393 digital
antifeedback paging interface.
The SP393 utilizes state of the art digital
recording technology to record the “live” page
from a phone system’s paging port output or
unused trunk port. The SP393 then immediately plays back the recorded page once or
twice (selectable) over the paging system.
Pages of up to 60 seconds can be stored and the SP393 automatically adjusts to the
page length for faster processing. In addition, the SP393 can be programmed to provide pre-page and post-page alert tones.
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Power: 120V AC/13.8V AC 1.25A, UL listed adapter provided
Dimensions: 133mm x 89mm x 44mm (5.25” x 3.5” x 1.75”)
Shipping Weight: 0.73 kg (1.6 lbs)
Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-
condensing humidity
Sampling Rate: 64K (equivalent)
Maximum Page Length: 60 seconds
Output Impedance: 600 ohm
Maximum Audio Output: 2V RMS (driving a 600 ohm load)
Talk Battery: 24V DC (Trunk mode only)
Connections: 10 position screw terminal block
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• High quality (64K) digital message storage
• High output - 2V RMS into 600 ohms
• 60 second record time
• Compatible with Paging ports or Trunk ports
• Activate recording from VOX detection, contact
closure or loop detect (Trunk mode only)
• VOX sensitivity adjustment
• Cancel page feature
• Selectable page repeat
• Selectable pre-page alert tone
• Selectable post-page alert tone
• Adjustable alert tone volume
• N.O./N.C. relay contacts control paging system
• Record/Playback LED indicator
• Compatible with virtually all paging and telephone
systems
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Eliminate Paging Feedback in:
• Warehouses, Factories, Offices
• Retail Stores, Hotels, Airports
• Stadiums, School Gymnasiums, Pools
• Casinos, Bingo Halls, Dining Establishments
• Other large noisy areas
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FBI-1A with 60 Second Record Time

IF YOU HAVE A PROBLEM WITH A VIKING PRODUCT, PLEASE CONTACT: VIKING TECHNICAL SUPPORT AT (715) 386-8666
Our Technical Support Department is available for assistance Monday 8am - 4pm and Tuesday through Friday 8am - 5pm central time. So that we can give you better service, before you call please:
1. Know the model number, the serial number and what software version you have (see serial label).
2. Have your Technical Practice in front of you.
3. It is best if you are on site.
RETURNING PRODUCT FOR EXCHANGE
The following procedure is for equipment that has failed out-of-box (within 10 days of purchase):
1. Customer must contact Viking’s Technical Support at 715-386-8666 to determine possible causes for the problem. The
customer MUST be able to step through recommended tests for diagnosis.
2. If the Technical Support Product Specialist determines that the equipment is defective based on the customer's input
and troubleshooting, a Return Authorization (R.A.) number will be issued. This number is valid for fourteen (14)
calendar days from the date of issue.
3. After obtaining the R.A. number, return the approved equipment to your distributor, referencing the R.A. number. Your
distributor will then replace the product over the counter at no charge. The distributor will then return the product to
Viking using the same R.A. number.
4. The distributor will NOT exchange this product without first obtaining the R.A. number from you. If you haven't
followed the steps listed in 1, 2 and 3, be aware that you will have to pay a restocking charge.
RETURNING PRODUCT FOR REPAIR
The following procedure is for equipment that needs repair:
1. Customer must contact Viking's Technical Support Department at 715-386-8666 to obtain a Return Authorization (RA)
number. The customer MUST have a complete description of the problem, with all pertinent information regarding the
defect, such as options set, conditions, symptoms, methods to duplicate problem, frequency of failure, etc.
2. Packing: Return equipment in original box or in proper packing so that damage will not occur while in transit. Static
sensitive equipment such as a circuit board should be in an anti-static bag, sandwiched between foam and individually boxed. All equipment should be wrapped to avoid packing material lodging in or sticking to the equipment. Include
ALL parts of the equipment. C.O.D. or freight collect shipments cannot be accepted. Ship cartons prepaid to:
Viking Electronics, 1531 Industrial Street, Hudson, WI 54016
3. Return shipping address: Be sure to include your return shipping address inside the box. We cannot ship to a PO Box.
4. RA number on carton: In large printing, write the R.A. number on the outside of each carton being returned.
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LIMITED WARRANTY
Viking warrants its products to be free from defects in the workmanship or materials, under normal use and service, for a period of one year from the date of purchase from any authorized Viking distributor or 18 months from the date manufactured, which ever is greater. If at any time during the warranty period, the product is deemed defective or malfunctions, return the product to Viking Electronics, Inc., 1531 Industrial Street, Hudson, WI., 54016. Customer must contact Viking's
Technical Support Department at 715-386-8666 to obtain a Return Authorization (R.A.) number.
This warranty does not cover any damage to the product due to lightning, over voltage, under voltage, accident, misuse, abuse, negligence or any damage caused by use of the product by the purchaser or others.
NO OTHER WARRANTIES
. VIKING MAKES NO WARRANTIES RELATING TO ITS PRODUCTS OTHER THAN AS DESCRIBED ABOVE AND DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTIES OR MERCHANTABILITY OR FIT-
NESS FOR ANY PARTICULAR PURPOSE.
EXCLUSION OF CONSEQUENTIAL DAMAGES
. VIKING SHALL NOT, UNDER ANY CIRCUMSTANCES, BE LIABLE TO PURCHASER, OR ANY OTHER PARTY, FOR CONSEQUENTIAL, INCIDENTAL, SPECIAL OR EXEMPLARY DAM-
AGES ARISING OUT OF OR RELATED TO THE SALE OR USE OF THE PRODUCT SOLD HEREUNDER.
EXCLUSIVE REMEDY AND LIMITATION OF LIABILITY. WHETHER IN AN ACTION BASED ON CONTRACT, TORT (INCLUDING NEGLIGENCE OR STRICT LIABILITY) OR ANY OTHER LEGAL THEORY, ANY LIABILITY OF VIKING SHALL
BE LIMITED TO REPAIR OR REPLACEMENT OF THE PRODUCT, OR AT VIKING'S OPTION, REFUND OF THE PURCHASE PRICE AS THE EXCLUSIVE REMEDY AND ANY LIABILITY OF VIKING SHALL BE SO LIMITED.
IT IS EXPRESSLY UNDERSTOOD AND AGREED THAT EACH AND EVERY PROVISION OF THIS AGREEMENT WHICH PROVIDES FOR DISCLAIMER OF WARRANTIES, EXCLUSION OF CONSEQUENTIAL DAMAGES, AND EXCLUSIVE REMEDY AND LIMITATION OF LIABILITY, ARE SEVERABLE FROM ANY OTHER PROVISION AND EACH PROVISION IS A SEPARABLE AND INDEPENDENT ELEMENT OF RISK ALLOCATION AND IS INTENDED TO BE ENFORCED
AS SUCH.
IMPORTANT: Electronic devices are susceptible to lightning and power station electrical surges from both the AC outlet and the telephone line.
It is recommended that a surge protector be installed to protect against such surges. Contact Panamax at (800) 472-5555 or Electronic
Specialists Inc. at (800) 225-4876.
!
(see Programming section H)
Mode Switch (see Programming section A)
Page LED - Lights during recording and playback
(see Programming section I)
Page Alert Tone Volume (see Programming section G)
DIP Switches (See Programming section C)
MODEL FBI-1A
©
VIKING
ELECTRONICS
HUDSON, WI 54016
600 OHM
AUDIO OUT
PAGI NG
INPUT
12345678 910
1 2 3
12345678910
VOX
SENSITIVITY
MIN
MAX
CANCEL PAGE
COMMON
RECORD PAGE
PAGING
CONTROL
OUTPUT
VOX Sensitivity - Voice Operated
Recording Adjustment
(see Programming section B)
Paging Control Output
(see Programming section D)
N.C. relay contact
COM relay contact
N.O. relay contact
Cancel Page (see Programming section E)
Record Page (see Programming section F)
Common
Paging Volume
120V AC
13.8V AC
Adapter
(included)
VIKING
PAGING
VOLUME
MIN
MAX
DIGITAL ANTI-FEEDBACK
PAGIN OPTIONS
PAGE REPEAT
PRE-PAGE TONE
POST PAGE TONE
PAGE
PAGE
TONE
PORT
LED
VOL
PAGING INTERFACE
POWER 13.8V AC
MODE SWITCH
TRUNK
PAGI NG
PORT
Phone System
(PABX/KSU)
600 ohm paging port
or unused trunk port
600 ohm page output
(to paging amp input)
To Paging System (not included)

A. Mode Switch
In the Trunk Port position, 24V talk battery is supplied for connecting the SP393 paging input to a phone system’s unused trunk port.
In the Paging Port position, a 600 ohm audio input is supplied for connecting to a phone system’s paging port output.
C. DIP Switch Programming
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B. VOX Sensitivity
If the SP393 is installed on a phone system’s paging port that does not supply a page control contact (normally open relay contact
that closes while the paging port is activated) the VOX (Voice Operated Recording) feature may be used. The VOX sensitivity may
require adjustment. Rotate the POT clockwise to increase the sensitivity for low level input signals (see Programming section I).
Note: The VOX (Voice Operated Recording) feature is not used in the trunk mode or when a page control contact is connected to
the record page input of the SP393 to trigger the recording. In these applications, set the VOX sensitivity to the minimum level.
Switch
1
1
2
2
3
3
Position
ON
OFF
ON
OFF
ON
OFF
Description
Enables the post page tone - a high tone after the page
Disables the post page tone
Enables the pre-page tone - a low tone before the page
Disables the pre-page tone
Enables page repeat - the message is played twice
Disables page repeat
Note: DIP Switches are shown in the factory default positions.
D. Paging Control Output
If required, these optional relay contacts can control your paging system.
The contacts will activate during page playback.
E. Cancel Page Input
The SP393 is capable of cancelling a page in progress. Connect the Cancel Page input to a normally open remote switch or button
at the receptionist’s desk. Momentarily pressing the button will cancel the page in progress (during recording or playback).
F. Record Page Input
Connect the Record Page Input to the normally open paging control contact of your phone system. Place the VOX sensitivity POT
in the “MIN” position. The SP393 will record the page while the contact closure is maintained.
Note: Using the Record Page Input is preferred over using the VOX circuit to control recording.
G. Page Alert Tone Volume
The SP393 has a POT for adjusting pre-page and post-page
alert tone levels (see diagram, right).
H. Paging Volume
Rotate the Paging Volume POT clockwise to increase the pag-
ing volume and counter-clockwise to decrease the paging volume (see diagram, right).
I. Page LED
This is a recording and playback indicator. When recording in
the Trunk Port mode, the LED will light steady while the phone
system’s trunk port is accessed. When recording in the Paging
Port mode, the LED can be used as a maximum VOX sensitivity adjustment indicator; the LED should flash only when the
paging port is accessed and paging audio is present, if the LED
lights steady when the paging port is not accessed, the VOX
sensitivity is set too high and should be decreased until the
LED turns off (see Programming section B).
During playback in either mode, the LED will light steady for the
entire duration of the message playback.
VIKING
PAGING
VOLUME
MIN
MAX
AC
.8V
DIGITAL ANTI-FEEDBACK
POWER 13
PAGIN OPTIONS
PAGE REPEAT
PRE-PAGE TONE
POST PAGE TONE
MODE SWITCH
TRUNK
PAGIN G
PAGE
PORT
PORT
LED
MODEL FBI-1A
©
VIKING
ELECTRONICS
HUDSON, WI 54016
PAGING INTERFACE
PAGING
INPUT
12345678910
PAGE
TONE
1 2 3
VOL
12345678910
600 OHM
AUDIO OUT
VOX
SENSITIVITY
MIN
MAX
E
AG
COMMON
RECORD P
AGE
P
CANCEL
CONTROL
DIP Switches
ON
OFF
1 2 3
PAGING
OUTPUT
PAGING
VOLUME
MIN
MAX
VIKING
PAGING
VOLUME
MIN
MAX
POWER 13.8V AC
PAGIN OPTIONS
PAGE REPEAT
PRE-PAGE TONE
POST PAGE TONE
MODE SWITCH
TRUNK
PAGING
PAGE
PORT
PORT
Decrease Increase
©
VIKING
ELECTRONICS
HUDSON, WI 54016
DIGITAL ANTI-FEEDBACK
PAGING INTERFACE
12345678 910
PAGE
TONE
1 2 3
LED
VOL
12345678910
Page Alert Tone Volume
MODEL FBI-1A
VOX
SENSITIVITY
MIN
MAX
PAGING
CONTROL
PAGE
D PAGE
COMMON
MIN
RECOR
VOX
MAX
OUTPUT
CANCEL
ING
600 OHM
AUDIO OUT
PAG
INPUT
SENSITIVITY

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. Revisions of this document or new editions of it may be issued to incorporate such changes.
Fax Back Doc 468
Printed in the U.S.A.
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.338866..44334455
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A. Trunk Port Mode
Important: The MODE SWITCH must be in the TRUNK PORT position.
1. Access the phone system’s trunk port that is interfaced to the SP393.
2. Announce the page.
3. Hang-up.
Note: The SP393 will record the entire time the trunk port is off hook. It is important that you hang-up immediately
after announcing the page to avoid recording silence.
B. Paging Port Mode
Important: The MODE SWITCH must be in the PAGING PORT position.
1. Access the phone system’s paging port.
2. Announce the page.
3. Hang-up.
If you are using the Record Page Input (see Programming section F), the SP393 will record the entire time you are
off hook on the paging port. It is important to hang-up immediately after announcing the page to avoid recording silence.
If you are NOT using the Record Page Input, the SP393’s VOX (voice activated recording) circuit will sense the paging audio and automatically begin recording the page. The SP393 will continue to record until 2 seconds of silence is
detected. The SP393 will then playback the recorded page. In this mode, the VOX sensitivity may require adjustment
(see Programming section B).
Note: For both modes, if the page exceeds the recording time, you will hear two error beeps in the handset before the page
is played. On systems that do not use the paging control output (see Programming section D), the error beeps will play
over the paging system before the page.