Valcom | V2926 | valcom one-way paging system design/information

VSP – One-Way Paging
Issue 14
VALCOM ONE-WAY PAGING
SYSTEM DESIGN/INFORMATION
Access Methods
GENERAL
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These instructions provide the basic information
required to properly install a One-Way paging system
manufactured by Valcom, Inc.
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Valcom One-Way Paging Equipment may be used with
any 1A2, Electronic Key, PABX Telephone Systems,
or with one or more dedicated single line telephone
sets.
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Capacity
SYSTEM OVERVIEW
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Purpose
Provides telephone accessed single or multizone
paging.
Applications
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•
•
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Electronic Key Systems
PABX
Stand alone systems
1A2
•
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TELEPHONE
SYSTEM
VALCOM
ONE-WAY
CONTROL
UNIT
POWER
SUPPLY
•
ONE-WAY
SPEAKER
ASSEMBLY
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Features
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All units are one talkpath and one link.
V-1094A, 1 zone (page port access only).
V-2000A, 1 zone with an integrated power supply.
V-2001A, 1 zone with an integrated power supply,
override capabilities and featuring two integrated
tone generators for night ringing and time clock
tones.
V-2003A, 3 zones with all call, background music
capabilities, override capabilities, two integrated
tones for night ringing and time clock signaling
plus integrated power supply.
V-2006A, 6 zones with all call, up to 3 group
calls, override capabilities, background music
capabilities, two integrated tone generators for
night ringing and time clock tones plus integrated
power supply.
V-2924A, 24 zones with all call, background
music capabilities.
V-1109RTVA, 9 zones with all call.
Each of the units listed above will drive up to 40
Valcom one-way amplified speaker assemblies per
zone (150 on V-1094A, V-9937, V-1101A, V-2000A,
V-2001A, V-2003A and V-2006A). Additional
speakers may be added to a zone by using a V-1094A.
Each V-1094A allows the addition of 150 more
amplified speaker assemblies to that zone.
ONE-WAY PAGING SYSTEM BLOCK DIAGRAM
FIGURE 1
•
Electronic Key System line button (C. O. circuit
required).
PABX loop trunk port (trunk circuit required).
Page port.
Station level access available (with appropriate
adapter).
Stand alone with dedicated single line sets.
1A2 line button (line card required on most units).
1, 3, 6, 9, and 24 (expandable with V-2925A in 24
zone increments for up to 96) zone page control
units available.
One-way all call to all speakers available.
Volume controls and amplifiers in each speaker.
No high power amplifier required.
Standard CAT 3, 5, 5E twisted pair cable
(typically 22 or 24 AWG) is used for speakers.
Existing twisted pair house cables / feed cables
may be used without introducing crosstalk.
See Multi-Path Information for systems up to 360
zones.
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VoIP (Voice-over-Internet-Protocol)
Adapters
Environment
•
Control Units:
Temperature
Humidity
0 to +40 degrees C
0-85% non-precipitating
Inside Speakers:
Temperature
Humidity
-20 to +55 degrees C
0-95% non-Precipitating
Horn Speakers:
Temperature
Humidity
-20 to +55 degrees C
0-95% non-precipitating
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Valcom’s VoIP adapters provide loudspeaker
paging through the client’s LAN/WAN.
VIP-800, Networked Audio Port, enables voice
access over an IP-based LAN/WAN. Other VIP800(s) will allow page zone extensions anywhere
else on the network.
VIP-810, Networked Station Port, connects to an
FXO port, loop start trunk port, or dedicated
analog telephone terminal device, and is connected
to an IP-based LAN/WAN.
VIP-820, Networked Trunk Port, allows a PBX
system device or IP telephone adapter to be
connected to a managed IP-based LAN/WAN.
The PBX system device or IP telephone adapter
must provide an open loop disconnect signal.
UP to 99 zones are possible using a VIP-800 unit
per zone for audio output.
Control Unit Power Requirements
Table 1
Control Unit
Dimensions
V-1094A:
V-2000A:
V-2001A:
V-2003A:
V-2006A:
V-2924A:
V-2925A:
V-2926:
V-2928:
V-1109RTVA:
VIP-800:
VIP-810:
VIP-820:
4.44"H x 2.75"W x 2.88"D
(11.28cm x 6.99cm x 7.32cm)
7.75"H x 5.8"W x 2.6"D
(19.69cm x 14.73cm x 6.6cm)
7.09"H x 9.0"W x 2.4"D
(18.0cm x 22.86cm x 6.1cm)
7.13"H x 10.00"W x 3.00"D
(18.1cm x 25.4cm x 7.62cm)
10.9"H x 13.00"W x 2.69"D
(27.7cm x 33.0cm x 6.83cm)
17.5"H x 10.3"W x 3.06"D
(44.45cm x 26.26cm x 7.77cm)
17.5"H x 8.37"W x 3.06"D
(44.45cm x 21.26cm x 7.77cm)
5.3"H x 3.0"W x 1.1"D
(13.46cm x 7.620cm x 2.79cm)
5.3"H x 3.0"W x 1.1"D
(13.46cm x 7.620cm x 2.79cm)
7.13"H x 5.9"W x 2.13"D
(18.11cm x 14.99cm x 5.41cm)
1.88”H x 5.50”Wx 4.15”D
(4.78cm x 13.97cm x 10.54cm)
1.88”H x 5.50”Wx 4.15”D
(4.78cm x 13.97cm x 10.54cm)
1.88”H x 5.50”Wx 4.15”D
(4.78cm x 13.97cm x 10.54cm)
"A" Battery
"B" Battery
VPU
V-1094A
-
50 mA
-1
V-1101A
50 mA
100 mA
-3
V-2000A
Supplies 600 milliamps, filtered
+12
V-2001A
Supplies 1 Amp, filtered
+20
V-2003A
Supplies 1.Amp, filtered
+20
V-2006A
Supplies 1.5 Amp, filtered
+30
V-2924A/V-2925A
A. C. Line Powered
0
60 mA
V-1109RTVA
VIP- 800/810/820
250 mA
Power Supply Included
-6
0
Notes for Table 1:
"A" Battery:
"B" Battery:
-21.5 to -26VDC filtered "talk" battery
-21.5 to -25VDC unfiltered "signal" battery
Filtered "A" battery may be used as both "A" battery
and "B" battery.
Unfiltered "B" battery may not be used in place of
filtered "A" battery.
VPU = Valcom Power Unit.
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Speaker Power Requirements
One-Way Self-Amplified Speaker Styles
Table 3
4" Ceiling Speaker
4" Recessed Ceiling Speaker (with mounting
ring & support rails)
8" Recessed Ceiling Speaker (with backbox &
support rails)
Black Track Style Speaker (1 watt version)
White Track Style Speaker (1 watt version)
Gray Track Style Speaker (1 watt version)
Black Track Style Speaker (5 watt version)
White Track Style Speaker (5 watt version)
Gray Track Style Speaker (5 watt version)
Black Pendant Speaker
White Pendant Speaker
Gray Pendant Speaker
Wall Speaker (black vinyl cover)
Wall Speaker (white vinyl cover)
8" Ceiling Speaker
8" Ceiling Speaker with knob
8" Ceiling Speaker with plastic grille
Wall Speaker (lt. brown open weave grille)
Wall Speaker (dark brown cloth grille)
Table 2
Speaker
Power
Requirements
VPU
V-1010C,
V-1011MR,
V-1012BB, V-1012MR,
V-1013B-BK, V-1013B-W,
V-1013B-GY V-1016-BK,
V-1016-W
V-1020C, V-1020KNOB,
V-763-BK,
V-763-W
V-1021C, V-1022C,
V-1023C, V-1024C,
V-1025C, V-1026C,
V-1027C,
V-1042-BK, V-1042-W,
V-1042-BR, V-1042-GY,
V-1220, V-1222,
V-9010-W,
V-9021, V-9022, V-9028
45 ma,
-24VDC
-1
V-1014B-BK, V-1014B-W,
V-1014B-GY, V-1015B-W,
V-1015B-BK, V-1015B-GY,
V-1440-BK, V-1440-W,
V-1440-BR, V-1440-GY
300 mA,
-24VDC
Corner Speaker (lt. brown open weave grille)
Corner Speaker (dark brown cloth grille)
Bi-directional Corridor Speaker (lt. brown open
weave grille)
Bi-directional Corridor Speaker (dark brown
cloth grille)
Black Slimline Amplified Wall Speaker
White Slimline Amplified Wall Speaker
Brown Slimline Amplified Wall Speaker
Gray Slimline Amplified Wall Speaker
Black Desk Top Speaker
White Desk Top Speaker
5 Watt Horn
5 Watt Marine Horn
15 Watt Horn
15 Watt Marine Horn
30 Watt Horn
7 Watt Explosion-Proof Horn
5 Watt Bi-directional Horn
Beige Flex Horn
Gray Flex Horn
White Flex Horn
8" Dual Input Ceiling Speaker
Dual Input Wall Speaker
Signature Series Ceiling Speaker
Black Signature Series Monitor Speaker
White Signature Series Monitor Speaker
Brown Signature Series Monitor Speaker
Gray Signature Series Monitor Speaker
Signature Series In-Wall Speaker
Surface Mount Vandal Resistant Speaker
2’ x 1’ Lay-In Ceiling Speaker
2’ x 2’ Lay-In Ceiling Speaker
2’ x 2’ Dual Input Lay-In Ceiling Speaker
-6
V-1030C/V-1030M
300 mA,
-24VDC
-6
V-1036C/V-1036M
900 mA,
-24VDC
-18
V-1038
1 Amp,
-48VDC
N/A
V-1039A
1 Amp,
-24VDC
-20
V-1050C
300 mA
-24VDC
-6
V-1080-BG, V-1080-GY,
V-1080-W
150MA 24VDC
-3
V-1420
200 mA
-24VDC
-4
V-1450
200 mA
-24VDC
-4
VPU - Valcom Power Unit
3
V-1010C
V-1011MR
V-1012BB
V-1013B-BK
V-1013B-W
V-1013B-GY
V-1014B-BK
V-1014B-W
V-1014B-GY
V-1015B-BK
V-1015B-W
V-1015B-GY
V-1016-BK
V-1016-W
V-1020C
V-1020KNOB
V-1021C
V-1022C
V-1023C
V-1024C
V-1025C
V-1026C
V-1027C
V-1042-BK
V-1042-W
V-1042-BR
V-1042-GY
V-763-BK
V-763-W
V-1030C
V-1030M
V-1036C
V-1036M
V-1038
V-1039A
V-1050C
V-1080-BG
V-1080-GY
V-1080-W
V-1220
V-1222
V-1420
V-1440-BK
V-1440-W
V-1440-BR
V-1440-GY
V-1450
V-9010-W
V-9021
V-9022
V-99028
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Valcom Power Units
SYSTEM DESIGN
Each page control/interface, speaker and peripheral
device has been assigned a Valcom power unit (VPU)
value. Products that provide power, such as the 2000
Series page control/interfaces or power supplies, have
power unit values indicated with a plus (+) sign.
Products that consume power have power unit values
indicated with a minus (-) sign. Products that neither
require nor provide power are indicated by a VPU of
zero (0).
1A2, Dedicated Single Line Set, E-Key,
or PABX Paging
Telephone T
System C.O.
Loop Start
R
Trunk Port
Valcom
Page
Control
Unit
- and/or -
Additional
Zones
(multi-zone
units only)
Speakers
Power Supply
(if required)
After you have chosen the page control interface,
speakers and accessories for your application, simply
add up all of the Valcom power units [indicated by a
minus (-)] for each item that requires power. This total
tells you how much power you need. If you have
chosen a 2000 Series control/interface, subtract the
total power units provided by this controller from your
previous total. If you come out even, or you have
power left over, you paging system is complete.
However, if you come out with more VPUs required
than provided, you will need additional power.
One or more dedicated
single line telephone(s)
DIAGRAM 1
Block Diagram or Loop Start Trunk Port and/or Single Line
Telephone Access of a Valcom Page Control/Interface
To provide one-way paging on 1A2, E-Key PABX
Systems, or from one or more dedicated single line
telephones, you will need a page control unit, one-way
amplified speaker assemblies, and possible a power
supply. In most cases, page access will be via a line
button for 1A2, a loop trunk port for a PABX or
Electronic Key or via Tip and Ring on a singe line
telephone(s).
The additional power required will be provided by
adding one or more VALCOM power supplies as listed
in Table 4.
Table 4 - Valcom Power Supplies
The control units may be any of the following.
1 zone
1 zone
3 zones w/all call
6 zones w/all call
9 zones w/all call
24 zones w/all call*
*24 zone expansion
module ( up to 96 total)
V-2000A
V-2001A
V-2003A
V-2006A
V-1109RTVA
V-2924A
V-2925A
The speakers may be any of those listed in Table 3 or
any other Valcom amplified speaker.or horn.
After you have selected the page control/interface and
the quantity and type of speakers for your system, use
Tables 1 and 2 to determine system power.
Part #
Voltage
Maximum
Current
VP-324
VP-624B
VP-1124
VP-2024
VP-2124A
VP-4024C
VP-4124
VP-6124
VP-12124
VP-2048C
VP-412A
-24VDC
-24VDC
-24VDC
-24VDC
-24VDC
-24VDC
-24VDC
-24VDC
-24VDC
-48VDC
-12VDC
250 ma.
600 ma.
1 amp
2.0 amp
2.0 amp
4.0 amp
4.0 amp
6.0 amp
12 amp
2 amp
400 ma
Valcom
Power
Units
+6
+12
+20
+40
+40
+80
+80
+120
+180
N/A
N/A
There are several cases when more than one power
supply will be required:
1. When the power required exceed the maximum
output of the power supplies available: Add
additional supplies as required.
2. In large systems or systems with many horn
speakers: Locate separate power supplies near
groups of speakers. (Refer to Tables 8 and 10 for
guidelines concerning maximum allowable
distances for power runs.
Add up the total Valcom power units (VPU) that will
be required. Subtract any power units being provided
by page controls featuring integrated power (2000
Series).
The remaining number of power units required will
determine the quantity and model(s) of power supply
required. Reference the next section, "Valcom Power
Units".
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3.
When the paging system is in several buildings or
on several floors of a single building, locate power
supply in each building or on each floor being
paged.
The V-9940 and V-9970 are FCC registered for direct
connection to the public telephone network, and also
carry U.L. 1459 approval. It will ring trip from 70 to
105 VRMS (20 to 30 hertz) ringing voltage.
E-Key or PABX Page Port Access
Valcom One-Way
Amplified Speaker
Assemblies
Page Zone 1
Page Zone 2
Page Zone X
In V-1094A
V-2000A
V-2001A
V-1094A
In V-2000A
V-2001A
Out
With a single line telephone, the called party provides
the disconnect at the end of the conversation by going
"on hook". A station level page adapter, on the other
hand, has no way of "knowing" when the calling party
has finished speaking. This unit has to sense line
conditions in order to determine when it is time to
disconnect.
With the V-9940 and V-9970, this line condition may
be quiet line sensing, a strict "time out" (disconnects
after a selected period of time) or open loop disconnect
of at least 150 milliseconds. Open loop is a service
provided by the central telephone office and involves
actually disconnecting the telephone line from the C.
O. for a brief instant. In some cases the "quiet line"
may also be programmed via the PABX. "Quiet line"
implies that the PABX will not return any tones (dial
tone, busy tone, reorder tone . . . etc.) to the called
station at the completion of the station to station call.
The telephone system may be tested for a "no returned
tones" status with your test set; have someone call you
on a station and then ask them to hang up . . . if you do
not hear any tones, or if there is a delay of at least 10
seconds before you hear any tones, then the "quiet
line" (i.e. audio sense time-out) may be used.
Out
Power Supply
DIAGRAM 2
Block Diagram of Multiple Zones of One-Way Paging
From Multiple Telephone System Page Ports
The Valcom V-1094A, V-2000A or V-2001A control
units may be used for page port access to Valcom
paging. Each of these units provide one zone of
one-way paging. If more than one page port is
available a V-1094A, V-2000A or V-2001A may be
used on each port for multizone paging. Refer to
Tables 2 and 3. For help in speaker and power supply
selection refer to the section titled "1A2, Dedicated
Single Line Set, E-Key, or PABX Paging" .
Ground start telephone lines are a good choice for use
with the V-9940 since a ground start line will not
return dial tone until a ground is applied to the ring
lead.
NOTE: Generally, Valcom dial select multizone page
units may not be used on page port output. (The
V-2003A and V-2006A may be used on certain page
ports).
Additionally, the V-9970 recognizes re-order tones and
dial tone as disconnect signals.
Station level Paging
The V-9940 can be used alone, or can provide access
to Valcom multi-zone and talkback page control units.
The Valcom V-9940 and V-9970 Station level Page
Adapters may be utilized to provide access to a single
or multiple zone paging system via an incoming central
office line, Centrex//Essex line or PABX station.
The V-9970 may be used to access the V-2003A and
V-2006A multi-zone control units only. The V-9970 is
not compatible with any talkback page control units.
This device.
1) Accepts a ringing phone line or station port.
2) Answers that line.
3) Provides line level audio to the paging system.
For a single zone of paging, Valcom One-way
Amplified Speakers may be directly connected to the
audio output of the station level page adapter.
Electrically, station level page adapters act like a
"self-answering" telephone.
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947100
Incoming C. O.
or Centrex line or
a PABX Station
Station Level
Page Adapter
SYSTEM INSTALLATION
General
or
These instructions will provide a basic understanding
for wiring Valcom one-way paging equipment and
connecting it to a telephone system.
Page
Control /
Interface
For specific wiring information, consult the installation
practice enclosed with the actual equipment being
used.
Your Telephone or
Telephone System
DIAGRAM 3
Block Diagram of Connections to a Valcom
Page Control/Interface
Precautions
Do not locate Valcom equipment or cabling within 18"
of a power supply, electrical panel, or any equipment
that generates electrical noise.
Mounting
The control equipment should be installed at the main
distribution frame with the telephone system common
equipment.
The V-1109RTVA, may be mounted to the backboard,
in a 7" KTU rack or mounting frames. A 66-type and
25-pair pigtail with female amphenol connector are
required for connections to these units if the mounting
frames are not used. Other control units are wall
mount units with connections via either screw
terminals, integrated punch down block, or a user
supplied 66-type block.
Speaker Spacing
Ceiling Speakers: The area covered by a ceiling
speaker depends on the height of
the ceiling. Refer to Table 5 for
speaker coverage.
Wall Speakers:
A wall speaker will cover up to
600 square feet. Wall speakers
should be spaced 20 feet apart.
Good quality paging will be heard
up to 30 ft. in front of the speaker.
Corridor Speakers: Corridor speakers should be
mounted 8 to 12 feet high and
spaced 30 to 40 feet apart.
Horn Speakers:
6
Refer to Table 6 for horn speaker
coverage. The first figure given
is the side to side distance
between the speakers. It is also
the distance in front of the
speaker that you can expect to
hear a good quality page. The
second figure given is the area
being covered in square feet.
947100
Very Noisy: Greater than 90dB. This would include
areas where talking to another person is very difficult.
Workers may be required to wear earplugs.
Track Style Speakers:
The 1 watt version will cover an
area up to 600 sq. feet. These
speakers should be spaced
approximately 20 feet apart.
Good quality page audio will be
heard up to 30 feet in front of the
speaker.
NOTE 1:
The 5 watt version will cover up
to 3,600 sq. feet. Depending
upon the height of the installed
speaker, good quality paging will
be heard up to 60 ft. in front of
the speaker.
Pendant Speaker:
NOTE 2:
The area covered by a pendant
speaker is determined by the
mounting height. Refer to Table
5 for speaker coverage.
Speaker Cabling
All Valcom one-way amplified speakers require 2 pairs
to operate. Standard CAT 3/5/5E/6 telecom/ data cable
may be used. Existing telephone wire and feed cables
may also be used. Refer to Tables 7 and 8 when
planning a job.
Table 5 - Ceiling Height Spacing/Coverage
Ceiling
10
12
15
25
<8
Height (ft.)
Spacing (ft.)
16
20
25
30
35
Approximate
250
350
500 800 1000
Coverage (ft2)
Wall Speakers: One per 600 sq. ft. spaced 20 ft. apart
Corridor Speakers (bi-directional): Spaced 35 ft. apart
Audio pair: The number of speakers looped on the
audio pair is not critical unless you have a very large
job. Table 7 gives guidelines for the number of
speakers per audio run.
Power Pair: The cable runs specified in Table 8 are
very important and MUST be followed for proper
operation of the one-way paging speakers.
Table 6 - Horn Spacing/Coverage
Location
5 Watt
15 Watt
N/A
Quiet
110'
50-65db
(12,000 ft2)
N/A
Moderate
80'
65-80Db
(6,400ft2)
75'
Noisy
50'
80-90dB
(5,600ft2)
(2,500ft2)
30'
45'
Very
Noisy
(900ft2)
(2,000ft2)
90+dB
*Contact Valcom Technical Support
In areas the sound level exceeds 100dB,
consideration should be given to using a
code call unit (V-9923B) for tone
signaling instead of using voice paging.
In extreme ambient noise, it is generally
easier to identify a tone code than to
discern speech.
Reverberant Areas - To increase the
intelligibility of paging in reverberant
areas, horns should be mounted closer to
the people being paged, in effect,
mounted at a lower height, closer
together and angled towards the floor.
30 Watt
N/A
Table 7 - Number of Speakers/Horns per Audio Run
Wire Run (Ft.)
22 AWG
24 AWG
100
150
120
200
150
120
400
100
60
800
50
30
1600
25
15
N/A
N/A
60'
(3,600ft2)
Noise Level Definitions
Quiet: 50-65dB. This would include areas such as
waiting rooms or doctors' examination rooms.
Moderate: 65-80dB. This includes areas such as
warehouses, shipping areas, or light manufacturing.
Noisy: 80-90dB. This includes machine shops or
heavy manufacturing.
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Table 8 - Number of Speakers per Power Run
(CAT 3/5/5E/6, 22 & 24 AWG)
Each Valcom page control unit contains the circuitry
required to interface with a telephone system, plus a
preamplifier circuit, and in some cases dial select
circuitry and/or provisions for background music
switching. Each one-way amplified speaker assembly
contains a speaker, amplifier, and volume control in a
suitable baffle or housing. The speakers and control
units require a -24VDC power supply (-48VDC for the
V-1038) to operate.
Maximum
Wire Run
Distance (Ft)
Quantity of Speakers/Horns
1 Watt
Interior
Speakers
4
7
15
30
SYSTEM OPERATION
Circuit Description
Signature
Series
5W
15W
30W
24
AWG
22
AWG
1
2
4
8
1
2
4
1
1000
500
250
125
1600
800
400
200
Connections from the control unit to the telephone
system are described in detail in the manual that is
shipped with the control unit.
Bridges and Backboxes
Ceiling speaker bridges provide support to prevent
ceiling tile from sagging from the weight of the
speaker. They are designed for use with standard 2'
wide ceiling tiles and distribute the weight of the
speaker assembly across the tile and onto the tile
support grid.
The audio pair from the control unit to the speakers
may be looped (speakers wired in parallel) between all
speakers in a zone (See Table 7). A second pair must
be run to each speaker to supply the DC voltage
required for operation (See Table 11). Standard 22 or
24AWG telephone cable may be used for the speakers.
Ceiling speaker backboxes provide an acoustic
enclosure behind the speaker for better sound quality.
They also protect the speaker from debris in the ceiling
and meet most local fire codes for use in air plenum
return ceilings. See Table 9 for Speaker and
Bridge/Backbox compatibility.
When accessing a single zone control unit from the
telephone system, you will immediately be connected
to the speakers and allowed to page.
When accessing a multizone control unit from the
telephone system, you will receive Valcom dial tone
from the Valcom unit. After dialing the code for the
zone desired, you will be connected to that group of
speakers and allowed to page. All Valcom control
units automatically release when you hang up the
telephone.
Volume Adjustments
Master volume controls are located on most Valcom
page control units. Each one-way speaker assembly
also has its own volume control. When installing a
system, set the master control to 1/2 and all speaker
and horn volume controls to 1/2 volume. After
powering up the system, adjust the individual speakers
to the desired level.
TECHNICAL ASSISTANCE
Refer to the installation practices for the equipment
being used for troubleshooting information and
procedures. Assistance in troubleshooting is available
from the factory. Call (540) 563-2000 and press 1 for
Technical Support.
The master control may then be used to change the
volume of the entire system. If background music is
being supplied, the background music level should be
adjusted last. To provide volume control to a certain
room or area, V-1092 Wall Mount Volume Controls
may be added to a zone, or to a section of a zone.
Valcom equipment is not field repairable. Valcom,
Inc. maintains service facilities in Roanoke, VA.
Should repairs be necessary, attach a tag to the unit
clearly stating company name, address, phone number,
contact person, and nature of the problem. Send the
unit to:
Valcom, Inc.
Repair & Return Dept.
5614 Hollins Road
Roanoke, VA 24019-5056
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947100
PROBLEM SOLVERS
Automatic Volume Control
ENHANCEMENT TO EXISTING
25/70/100 VOLT PAGING
SYSTEMS
The V-9933A Noise Sensing Volume Control monitors
the noise level fluctuations in an area by utilizing a
built-in microphone. When a page is made, the
V-9933A electronically locks onto the last noise level
sampled and automatically adjust the volume of up to
150 Valcom One-Way Self-Amplified Speakers in
order to compensate for the current ambient noise
level, thus eliminating the need for personnel to
manually adjust the paging speakers. The V-9933A
should be mounted in the area that experiences the
fluctuating noise. If a single zone contains areas of
independently fluctuating noise levels, multiple V9933A units may be used (one per area).
• Each Noise Sensing Volume Control, V-9933A,
can control up to 150 amplified speakers or horns
in a single zone.
• Multiple Noise Sensing Volume Controls, V9933A, can be used on the same zone if desired.
• V-9933A can be connected to a zone output of any
Valcom One-Way Page Control/Interface or
Station Level Page Control.
• Not for use with background music without
additional equipment.
Using a Valcom Page Control/Interface
with a Central Amplifier
Typically a zone from a one-way control unit may be
directly connected to a high power amplifier to allow
access to existing paging equipment. In certain cases
capacitors or a resistor network may be required to
interface the Valcom equipment to the amplifier.
Contact Valcom Technical Support if trouble is
encountered.
NOTE: Not all Valcom page control units have
control leads available for amplifier control.
Use Valcom One-Way Self-Amplified Speakers to
expand a 25/70/100V audio zone.
Remote Microphone
The V-9934 Remote Microphone may be used with
the V-9933A Noise Sensing Volume Control.
• V-9934 is a self-contained microphone and preamp.
• No power supply is required for V-9934
• Up to four v-9934 units may be paralleled on one
V-9933A.
• Each V-9934 may be on a 1000’ wire run.
Stacking Feedback Eliminator
The V-9964, Stacking Feedback Eliminator, is
designed to prevent paging system feedback. When a
page is made into a zone, the V-9964 records the page
into digital memory. Upon completion of the live
page, the message is released to play over the zone of
speakers. Since the paging party has hung up the
telephone or released the microphone, offensive
feedback cannot occur.
• Each Stacking Feedback Eliminator, V-9964, can
control up to 150 amplified speakers or horns in a
single zone.
• Multiple Stacking Feedback Eliminators, V-9964,
can be used on multiple zone page controls.
• The V-9964 can be connected to a zone output of
any Valcom One-Way Page Control/Interface or
Station Level Page Control.
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947100
It is cost effective to expand a centrally amplified
paging system with Valcom distributed amplified
speakers. In many instances expanding a centrally
amplified paging system involves replacement of the
expensive central amplifier with a larger one in order
to provide the additional power that the speakers or
horns require.
•
•
•
•
•
•
•
•
•
•
•
•
This also involves additional labor in re-balancing the
system. Adding high voltage type speakers to an
existing amplifier where the load is not configured
properly will cause distortion or premature system
failure, again requiring replacement of the central
amplifier. By using Valcom distributed amplified
speakers to expand the system, almost unlimited
growth is possible, without loading down the existing
amplifier.
ADVANTAGES OF DISTRIBUTED AMPLIFIED SYSTEMS
Low voltage, therefore existing telephone cable (Class 2 wiring) can be used to eliminate costly outside plant or
indoor conduit.
Low voltage operation means much less power dissipation (heat), therefore the longevity of the paging
equipment is increased dramatically.
Multizone capability of 96 zones from a single trunk port. (Up to 576 Zones with All Call with multiple
systems connected for Global All Call – Call Valcom Technical Support for assistance)
Talkback, one-way or combination systems are easy to configure.
Individual volume controls built-in to each one-way speaker for volume adjustment after system is installed.
It is cost-effective to install one telephone cable versus installing both telephone cable and 70 volt shielded
paging cable.
Unlimited one-way speaker expansion since each speaker is self-amplified.
Jobs requiring explosion-proof systems are easily accommodated.
Amplified one-way speakers can interface 70 volt systems without changing or adding central amplifier.
Many localities require conduit for "high voltage" (Class 1) conductors, this is rarely a necessity with a
distributed amplified system.
The rated output of a distributed amplified paging speaker or horn is always available due to the fact that the
actual audio signal amplification is accomplished on an individual basis. In a 70 volt system, the rated output is
only available if the central amplifier is actually providing a full 70 volts to the speaker or horn and the audio
signal line losses are negligible.
Background music is unaffected in zones that are not currently being paged.
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Table 9
Ceiling
Speaker
Support Ring
V-1010C
V-1020C,
V-1220C
V-1020C,
V-1220C
V-1021C
V-1021C
V-1420
Bridge
Backbox
Bridge/Backbox
Combo
Flamex®
Metal
-
V-9904M-5
V-9915M-5*
-
-
X
V-9912M-10
or
V-9912P-12
-
V-9915M-5
-
X
X
-
-
-
-
-
-
V-9914-5
Or
V-9914M-5
V-9915-5*
Or
V-9915M-5
V-9916
Or
V-9916M
X
X
-
-
V-9918
-
V-9915-5
-
-
-
-
V-9914-5
V-9915-5
V-9916
X
-
-
-
-
V-9816M
-
X
The V-9914-5 Bridge and the V-9915-5 Backbox are made of Borg-Warner Flamex® fire retardant (94-0) material
and may only be ordered in multiples of five (5).
The V-9904M-5, V-9914M-5, and V-9915M-5 metal bridges and backboxes may only be ordered in multiples of
five (5).
*Must use corresponding bridge.
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Table 10 – Valcom One-Way Page Control/Interface Feature Chart
Model #
V-1094A
V-2000A
V-2001
A
V-2003A
V-2006A
V-1109RTVA
V-2924A/
V-2925A/V-2926
Number of Zones
1
1
1
3
6
9
24 - 96
Power Units
-1
+12
+20
+20
+30
-6
0
X
X
X
X
X
X
X
X
X
X
Background Music
All Call
Night Ringing Tones
X
X
X
Add V-9927A
X
Time Clock Tones
X
X
X
Add V-9927A
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Note 1
Note 1
On Override Input
X
X
X
X
Power Supply Built In
X
Group Call
Battery Back-up Input
X
Inhibit (Speaker Cancel)
Loop Start Trunk Access
X
X
Gnd Start Trunk Access
Page Port Access
X
X
1A2 Intercom Access
Override Tip and Ring
Note 1: Works on selected telephone system
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947100
See The
MultiPath
Product Line
For Up To
360 Zones
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