intercom atkinson
TRANSCRIPT
Address all communications and shipments to:
2645 Federal Signal DriveUniversity Park, IL 60466-3195(888)751-1500
Atkinson Dynamics Intercoms
Models AD-26, AD-27, AD-56, and AD-57
Installation and Service Instructions
INSTALLATION AND SERVICE INSTRUCTIONS FOR ATKINSON DYNAMICSHEAVY-DUTY INTERCOMS
SAFETY MESSAGE TO INSTALLERS, USERS AND MAINTENANCE PERSONNEL
It is important to follow all instructions shipped with this product. This device is to be installed by atrained electrician who is thoroughly familiar with the National Electrical Code and will follow NECGuidelines as well as local codes. Marine installations shall be in accordance with Title 46, CFR,Parts 110-113.
The selection of the mounting location for the device, its controls and the routing on the wiring is tobe accomplished under the direction of the facilities engineer and the safety engineer. In addition,listed below are some other important safety instructions and precautions you should follow:
• This is not a listed safety device and is not intended to be used as such.
• Read and understand all instructions before installing or operating this equipment.
• Disconnect power before connecting or doing any maintenance on this intercom.
• All effective warning speakers produce loud sounds which may cause in certain situations,permanent hearing loss. You should take appropriate precautions such as wearing hearingprotection.
• After testing is complete, provide a copy of this instruction sheet to all operating personnel.
• Establish a procedure to routinely check the intercom installation for integrity and properoperation. Any maintenance must be performed by a trained electrician in accordance with NECguidelines and local codes.
Failure to follow all safety precautions and instructions may result in property damage, seriousinjury, or death to you or others.
A. General Features.
The Atkinson Dynamics intercom is a heavy-duty, 2-way, communications device designed forindustrial applications. There are four basic models: AD-26, 12VDC; AD-56, 24VDC; AD-27,120VAC 50/60Hz; and AD-57, 240VAC 50/60Hz. The AC line is fused with a 1/
2-amp 250 volt
type GMC fuse in the 120/240VAC units. A description of the available models follows.
Basic Model Specifications
Model AD-26 Model AD-56 Model AD-27 Model AD-57
Supply Voltage 12 VDC 24VDC 120VAC, 50/60 Hz 240VAC, 50/60 Hz
Audio Power
Output (Max.) 8.0 Watts 11.7 Watts 11.3 Watts 11.3 Watts
Power Consumption
(Max.) 20.0 Watts 39.6 Watts 28.8 Watts 30.5 Watts
Operating Current
(nominal) 1.47 A 1.65 A 0.240 A 0.127 A
Operating
Temperature -31°F to 150°F -31°F to 150°F -31°F to 150°F -31°F to 150°F
Shipping Weight 10 lbs. 10 lbs. 10 lbs. 11 oz. 10 lbs. 11 oz
Dimensions See Figure 20 See Figure 20 See Figure 20 See Figure 20
Ratings UL, cUL, Marine-Listed
NEMA-Type 4X (excluding microphone models)
Table 1-1-
Additional Model Information
Letter Group Function/Feature
“A” Call button
“C” Master mode
“D” Slave mode
Number Group
“-1” Remote power
“-2” Provisions for external talk/listen switch (Foot pedal ready)
“-3” External call contacts for auxiliary signal
“-4” Extreme temperature use (-50°F to 150°F)
“-6” Designed for use in a zoned system
“-7” Provisions for hand-held noise canceling microphone
“-8” Additional pre-amp for use with remote slave speakerMiscellaneous
“-M22” Equipped with remote monitor switch
“-M34” Provisions for headset microphone with belt switch
“-M44” Remote speaker volume control
Table 2
MASTER UNITS:
“C” Models default to Master, or speaker, mode. In Master mode, the unit acts as a speaker andbroadcasts audio signals generated elsewhere in the intercom system. Depressing the Talk switchturns the unit into a microphone and enables the user to broadcast to all other intercoms in thesystem. Releasing the switch returns the unit to Master mode. Figure 4 illustrates a Master/Slaveintercom system.
SLAVE UNITS:
“D” Models default to Slave, or microphone, mode. In Slave mode, the unit is designed to serveas a hands-free microphone with transmission to all Master units in the intercom system. TheSlave unit will act as a speaker and broadcast audio transmissions only when the Talk switch ofany Master unit in the intercom system is depressed. Figure 4 illustrates a Master/ Slave intercomsystem.
CALL BUTTON:
“A” Models are equipped with a Call switch. Depressing the call switch transmits an 890Hz toneto all units in the intercom system.
CAUTIONThe call signal is louder than normal voice messages being carried on the line. Do not depress the
call switch while carrying on a conversation with someone on the system. This will subject thelistener to very loud sound levels.
The volume of the call signal is affected by the volume control on the receiving unit, so if volume isturned all the way down at a receiving station, the call signal will not be heard.
MICROPHONE:
“-7” Hand-Held Noise Cancelling Microphones are recommended for use in environments withhigh levels of ambient noise. Keying the microphone overrides the default mode of the intercomand enables audio transmission to all Master units in the intercom system. Figure 2 illustrates acommon intercom system where hand-held microphones are used.
-2-
-3-
HEADSET MICROPHONE WITH-BELT-SWITCH:
“M34” Headset Microphones and Belt Switches are an additional option for environments with ahigh level of ambient noise. Keying the belt switch overrides the default mode of the intercomand enables audio transmission to all Master units in the intercom system. Figure 5 illustrates acommon intercom system where a headset microphone and belt switch are used.
REMOTE POWER:
“-1” Models are designed to provide power to “-1” remote intercom units. The AC-powered mainunit provides 12 Volts DC-power and audio in the same cable to the remote unit. A “-1” unit canprovide power to just one remote unit. Figure 3 illustrates this configuration.
PRE-AMPLIFIER:
“-8” Models are equipped with a pre-amplifier and are designed for use with Slave speaker unitssuch as the AD-SV-25 Remote Speaker with Volume Control. The “-M44” option equips the “-8”Master unit with a knob for controlling the volume of remote speakers such as the AD-SF-25Flush Mount Speaker or the AD-SS-25 Swivel Mount Speaker. Figures 6 and 7 illustrate intercomsystems with the “-8” and “-M44” options.
EXTERNAL-POWER-SOURCE:
The use of an external power source allows the user to configure intercom systems made up of “-1” DC-powered Master and Slave units. Figure 8 illustrates such a system.
SURGE PROTECTION:
Metal Oxide Varistor (MOV) devices are used to protect the audio lines. The intercom must haveEarth or Chassis Ground terminated to it to ensure surge protection.
The output amplifier of the Atkinson Dynamics intercom offers full short circuit protection andoverheat protection on AC models only.
FOOT PEDAL READY:
Models with the “-2” option are designed for hands-free activation of the Talk/Listen switch.Figures 9, 10, and 17 show examples of intercoms with this option. A heavy-duty foot pedal(Model ADFP) is available through Atkinson Dynamics.
AUXILIARY SIGNAL:
Models with the “-3” option are equipped with a call button that provides a contact closure for anattention-getting auxiliary device, e.g. a strobe light. Figure 13 demonstrates an intercom systemwith this option. Atkinson Dynamics offers a low profile strobe light that is available with anamber or red lens, pipe or surface mount configuration, and in three voltage variations.
ZONED SYSTEM REMOTE:
Models with the “-6” option are designed for use in a zoned system. Figure 11 illustrates a zonedintercom system. A master intercom can select (via a switch box) to talk to any one or moreremotes in a system. Each remote unit is equipped with a Talk/Listen switch that enablescommunication to the master intercom, even when that zone is not selected. Atkinson Dynamicsoffers 6-zone and 12-zone switch boxes.
MONITOR SWITCH:
Models with the “-M22” option are equipped with a monitor on/off toggle switch. When themonitor switch is in the on position, the remote unit becomes a slave and defaults to talk mode.Figures 14 and 15 illustrate systems with this feature.
B. Unpacking.
After unpacking the Atkinson Dynamics Intercom, examine it for damage that may haveoccurred in transit. If the equipment has been damaged, do not attempt to install or operate it,and file a claim immediately with the carrier stating the extent of the damage. Carefully checkall envelopes, shipping labels and tags before removing or destroying them.
Before attempting to install the intercom, be sure that all parts listed in the KIT CONTENTSLIST have been supplied.
C. Kit Contents List.
Qty. Description Part Number
1 Resistor, 1K, 1W 101216
D. Mounting.
CAUTIONThe selection of the mounting location for the device, its controls and the routing of the wiring
is to be accomplished under the direction of the facilities and the safety engineer.
NOTEIntercoms supplied with flexible cords for connection to field wiring are not intended
for permanent mounting.
The intercom is intended to be mounted on any relatively flat and rigid surface by the twomounting ears on the exterior of the housing. Figure 9 is a dimensional outline drawingshowing the proper mounting configuration. The two mounting ears are 13/32" diameter holesspaced 5.68" apart. Hardware for mounting the intercom to the surface shall be provided by theinstaller.
WARNINGThis unit is heavy and should be mounted on a rigid surface capable of supporting the weight
of the intercom.
WARNINGFor shipboard applications, installations shall be in accordance with the United States Coast Guard,
Title 46 CRF, Parts 110-113.
For units using the noise cancelling hand-held microphone, install the supplied microphonemounting clip on any rigid surface near the intercom. Avoid locating the microphone where itmay be exposed to excessive moisture or dust.
E. Electrical Connections.
Plug each intercom into a nearby power source. Connect the audio inputs in parallel.
Audio wires should be sized properly by your licensed installation electrician for yourspecified application.
Optional: A 1K, 1W resistor is included in a kit with each intercom. Installing the resistoracross the audio lines helps to reduce noise in certain environments. Only one resistor needs tobe installed on the lines for any system installation.
See figures 1 through 19 for typical intercom connections and wiring information.
-4-
F. Service.
1. General.
Federal Signal will service your equipment or provide technical assistance with anyproblems that cannot be handled locally.
Any units returned to Atkinson Dynamics for service, inspection, or repair must beaccompanied by a Return Material Authorization. This R.M.A can be obtained only fromthe factory by calling (888)751-1500.
At this time a brief explanation of the service requested or the nature of the malfunction,should be given.
Address all communications and shipments to:
ATKINSON DYNAMICSService Department2645 Federal Signal DriveUniversity Park, IL 60466-3195
-5-
-6-
2. Replacement Parts.
WARNINGReplace fuse with GMC-1/2 only. DO NOT substitute.
Description Part NumberBelt switch assembly K137146BConnector, 3-Position (12/24V PC Boards) K140411A-03Cover plate gasket K8590013BFuse, GMC-1/2 K148A155AHeadset assembly K137145AKnob, volume control K141A129AMicrophone assembly K137144APC Board, 120VAC K2001875APC Board, 120VAC, w/headset K2001875A-M34PC Board, 12V, AD-26 K2001878BPC Board, 12V, AD-26-7 K2001878B-06PC Board, 12V, AD-26-8 K2001896B-01PC Board, 12V, AD-26-8-M44 K2001896BPC Board, 12V, AD-26A K2001878B-05PC Board, 12V, AD-26C K2001878B-01PC Board, 12V, AD-26D K2001878B-02PC Board, 12V, AD-26SA-25 K2001878B-17PC Board, 240VAC K2001875A-01PC Board, 240VAC, w/headset K2001875A-01M34PC Board, 24V, AD-26SA-25 K2001878B-19PC Board, 24V, AD-56 K2001878B-07PC Board, 24V, AD-56-8 K2001896B-03PC Board, 24V, AD-56-8-M44 K2001896B-02PC Board, 24V, AD-56A K2001878B-12PC Board, 24V, AD-56C K2001878B-08PC Board, 24V, AD-56D K2001878B-09Kit, potentiometer w/ on/off switch K8590236AKit, push button switch (12/24V models) K8590242AKit, push button switch (120/240V models) K8590241AResistor, 1K, 1W K101216ARubber boot, push button switch K288697ARubber boot, toggle switch K288696ARubber boot, volume control K288A542AKit, toggle switch, DPDT K8590238AKit, potentiometer, 10K Ohm K8590237AKit, toggle switch, 3PDT (AD-27A-M34 & AD-27A-4-M34 only) K122342AKit, toggle switch, 3PDT K8590239BKit, pushbutton switch, 3PDT K8590288AKit, potentiometer, 1K Ohm K8590289AVoice Coil/Diaphragm Assembly-Series A, Series B K8590049AVoice Coil/Diaphragm Assembly-Series C K8590181A
G. Warranty.
Atkinson Dynamics guarantees their intercoms to be free of defects at the time of delivery. Ifdamage is found to be a factory defect, Atkinson Dynamics will warrant all labor charges forrepair for one full year, and all replacement parts for two full years.
-7-
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TE
TO O
TH
ER
INT
ER
CO
MS
1 37
56
2 4 SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
* *B
LKW
HT
GR
N*
1K
1W
ATT
Ope
rati
ng P
rinc
iple
:•
Whe
n on
e ta
lks,
all
rem
otes
will
hea
r.•
To ta
lk in
to r
emot
e, p
ress
talk
sw
itch
and
talk
into
spe
aker
/mic
roph
one.
Rel
ease
talk
sw
itch
to li
sten
. (T
he h
eads
et s
peak
er s
elec
tor
switc
hm
ust b
e in
“sp
eake
r” p
ositi
on to
hea
r re
ceiv
edau
dio
sign
al o
n sp
eake
r.)•
To ta
lk in
to h
eads
et, p
ress
bel
t “ta
lk”
switc
han
d ta
lk in
to h
eads
et m
icro
phon
e. R
elea
se b
elt
switc
h to
list
en. (
The
sel
ecto
r sw
itch
mus
t be
in “
head
set”
pos
ition
.)N
OT
ES:
1.Sp
eake
r/M
icro
phon
e2.
Off
/On/
Spea
ker
volu
me
cont
rol
3.Ta
lk/L
iste
n sw
itch
4.H
eads
et/S
peak
er s
elec
tor
switc
h5.
“Cal
l” p
ush
butto
n sw
itch
6.#1
3714
6 B
elt s
witc
h w
/15
foot
cor
d7.
#137
145
Hea
dset
w/n
oise
can
celli
ngm
icro
phon
e
Bef
ore
inst
allin
g re
mot
e in
terc
oms,
pre
caut
ions
sho
uld
be t
aken
to
prev
ent
feed
back
betw
een
two
or m
ore
rem
otes
in c
lose
pr o
xim
ity
and
acou
stic
ally
ref
lect
ive
area
s.
Pow
erR
emot
e A
12–1
8VD
CA
D-2
6A-M
3412
0V 5
0/60
Hz
AD
-27A
-M34
22-3
0VD
CA
D-5
6A-M
3424
0V 5
0/60
Hz
AD
-57A
-M34
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sH
OT
120/
240V
Mod
els
WH
TC
omm
on12
/24V
Mod
els
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
only
5
-11-
BLK WHT
BLK 1 WHT 2
AUDIO
200 FT. MAX.
COMMON
290A3742B
MASTER
REMOTESLAVE
STATION
1
32
1
2
1K1WATT
SEE POWERCONNECTIONS
BLKWHTGRN
*
*
POWER CONNECTIONS:BLK +DC Power 12/24V Models
HOT 120/240V ModelsWHT Common 12/24V Models
Neutral 120/240V ModelsGRN Earth Ground 120/240V
Models only
NOTES1. Speaker/Microphone2. Off/On Speaker Volume Control3. Talk/Listen Switch4. Remote Slave Station
Model AD-SV-25
Operating Principle:1. Slave station is both a speaker and a microphone.2. Master is normally in “Listen” mode
until the talk button is pressed to talk to remote.3. Volume controls are for received signal volume only.
They do not control transmitted signals.
POWER MASTER12-18VDC AD-26-822-32VDC AD-56-8120V 50/60 Hz AD-27-8
6
-12-
BLK WHT
BLK 1 WHT 2
AUDIO
200 FT. MAX.
COMMON
290A3743B
MASTER
SPEAKER
1
32
5
4
SEE POWERCONNECTIONS
BLKWHTGRN
1K1WATT
*
*
NOTES:1. Speaker/Microphone2. Off/On/Speaker volume control3. Talk/Listen switch4. Outgoing Volume Control5. Speaker Model AD-SS-25 with swivel mounting
bracket or Speaker Model AD-SF-25 with holesin outer flange for flush mounting
Operating Principle:1. Slave station is both a speaker and a microphone.2. Master is normally in “Listen” mode until the talk button is pressed to talk to remote.3. Outgoing and incoming volumes are controlled by separate controls on master.
POWER CONNECTIONS:BLK +DC Power 12/24V Models
HOT 120/240V ModelsWHT Common 12/24V Models
Neutral 120/240V ModelsGRN Earth Ground 120/240V
Models only
POWER MASTER12-18VDC AD-26-8-M4422-32VDC AD-56-8-M44120V 50/60 Hz AD-27-8-M44240V 50/60 Hz AD-57-8-M44
7
-13-
GR
N
RE
D
WH
T
BLK
GR
N 1
RE
D 3
WH
T 4
BLK
2
GR
N 1
RE
D 3
WH
T 4
BLK
2
AU
DIO
+ D
C P
OW
ER
CO
MM
ON
CO
NT
RO
L
290A
3744
MA
ST
ER
"A
"M
AS
TE
R "
B"
SLA
VE
1 3
4 5
2
1
1
3
2
2
PO
WE
R
(+)
( -)
1K 1WAT
T
Ope
rati
ng P
rinc
iple
:1.
Mas
ters
nor
mal
ly li
sten
tosl
ave.
2.Sl
ave
talk
s to
mas
ters
“han
ds-f
ree”
, with
out h
avin
g to
pres
s a
talk
sw
itch.
3.W
hen
any
mas
ter
talk
s, s
lave
hear
s. O
ther
mas
ter
will
hea
r.4.
To ta
lk in
to m
aste
r, pr
ess
talk
switc
h an
d sp
eak
into
spe
aker
/m
icro
phon
e. R
elea
se ta
lksw
itch
to li
sten
.5.
To ta
lk in
to h
and-
held
mic
roph
one,
pre
ss ta
lk s
witc
hon
mic
roph
one
and
spea
k in
tom
icro
phon
e el
emen
t.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
eC
ontr
ol3.
Pres
s-to
-Tal
k Sw
itch
4.#1
3714
4 H
and-
held
, noi
se-
canc
ellin
g m
icro
phon
e w
ithpu
sh-t
o-ta
lk s
witc
h
PO
WE
RM
AST
ER
AM
AST
ER
BSL
AV
E12
-18V
DC
AD
-26C
-1-7
AD
-26C
-1A
D-2
6D-1
22-3
2VD
CA
D-5
6C-1
-7A
D-5
6C-1
AD
56D
-1
8
-14-
9
290A
4065
BLK
WH
T
BLK
GR
N
RE
D
WH
T
1K 1WA
TT
AU
DIO
CO
MM
ON
RE
MO
TE
AR
EM
OT
E B
1 32
BLK
WH
TG
RN
*SE
E P
OW
ER
CO
NN
EC
TIO
NS
TO
OT
HE
RIN
TE
RC
OM
S
*
1 3 4
2
BLK
WH
TG
RN
*
Ope
rati
ng P
rinc
iple
:•
Whe
n on
e ta
lks,
all
inte
rcom
s w
ill h
ear.
•To
talk
to o
ther
sta
tions
, pre
ss th
e ta
lk/li
sten
sw
itch
and
spea
kin
to th
e sp
eake
r/m
icro
phon
e. R
elea
se ta
lk s
witc
h to
list
en.
•To
use
ext
erna
l tal
k sw
itch,
clo
se s
witc
h an
d sp
eak
into
the
spea
ker/
mic
roph
one.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Talk
/Lis
ten
Switc
h4.
Cus
tom
er-S
uppl
ied
Ext
erna
l Nor
mal
ly-O
pen
Talk
/Lis
ten
Switc
h, M
omen
tary
(e.
g., f
oot s
witc
h)
Pow
erR
emot
e A
Rem
ote
B
12-1
8VD
CA
D-2
6A
D-2
6-2
120V
50/
60H
zA
D-2
7A
D-2
7-2
22-3
0VD
CA
D-5
6A
D-5
6-2
240V
50/
60H
zA
D-5
7A
D-5
7-2
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sH
OT
120/
240V
Mod
els
WH
TC
omm
on12
/24V
Mod
els
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
only
-15-
GR
N
WH
T
BLK
GR
N
WH
T
BLK
GR
N
WH
T
BLK
AU
DIO
CO
NT
RO
L
CO
MM
ON
290A
4066
MA
ST
ER
"A
"M
AS
TE
R "
B"
SLA
VE
3
4
2
1
3
2
2
1K
1W
AT
T
SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
**B
LKW
HT
GR
N*
BLK
WH
TG
RN
*
RE
D
BLU
1
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sH
OT
120/
240V
Mod
els
WH
TC
omm
on12
/24V
Mod
els
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
only
Ope
rati
ng P
rinc
iple
:•
Mas
ters
nor
mal
ly li
sten
to s
lave
.•
Slav
e ta
lks
to m
aste
r ha
nds-
free
, with
out h
avin
g to
pres
s a
talk
sw
itch.
•W
hen
any
mas
ter
talk
s, s
lave
hea
rs.
Oth
er m
aste
rsw
ill h
ear.
•To
talk
into
mas
ter,
pres
s ta
lk s
witc
h an
d sp
eak
into
spea
ker/
mic
roph
one.
Rel
ease
talk
sw
itch
to li
sten
.•
Mas
ter
“A”
can
talk
by
pres
sing
eith
er th
e ta
lk s
witc
hor
ext
erna
l sw
itch
(cus
tom
er s
uppl
ied)
.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Pres
s-To
-Tal
k Sw
itch
4.C
usto
mer
-Sup
plie
d E
xter
nal N
orm
ally
-Ope
n Pr
ess-
To-T
alk
Switc
h, M
omen
tary
(e.
g., f
oot s
witc
h)
Pow
erM
aste
r A
Mas
ter
BSl
ave
12-1
8VD
CA
D-2
6C-2
AD
-26C
AD
-26D
120V
50/
60H
zA
D-2
7C-2
AD
-27C
AD
-27D
22-3
0VD
CA
D-5
6C-2
AD
-56C
AD
-56D
240V
50/
60H
zA
D-5
7C-2
AD
-57C
AD
-57D
10
-16-
11 290A
4067
RE
MO
TE
RB
MA
ST
ER
DE
SK
SE
T
MA
ST
ER
WA
LL M
OU
NT
INT
ER
CO
M
4 5 7
SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
*
*
*
****
RE
MO
TE
RA
4
8
6
3
5
BLK
WH
TG
RN
BLK
WH
TG
RN
RE
MO
TE
RC
DE
SK
SE
T
BLK
WH
TG
RN
TO
OT
HE
R R
EM
OT
ES
4
65
BLK
WH
TG
RN
*
*
*
WH
T
47 ‰
GR
N
RE
D
BLK
BLK
RE
D
GR
N
WH
T
TALK
CO
M.
TALK
LIS
TE
N
LIS
TE
N C
OM
.
TALK
CO
M.
TALK
LIS
TE
N
LIS
TE
N C
OM
.
TALK
CO
M.
TALK
LIS
TE
N
LIS
TE
N C
OM
.
TALK
CO
M.
TALK
LIS
TE
N
LIS
TE
N C
OM
.
BLK
RE
D
GR
N
WH
T
BLK
RE
D
RC
RB
RA
GR
N
WH
T
47 ‰ 47 ‰
2
3
2
99
1
1
6
-17-
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
OW
ER
12/2
4V M
odel
sH
OT
120/
240V
Mod
els
WH
TC
omm
on12
/24V
Mod
els
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
only
PO
WE
RR
EM
OT
E R
AR
EM
OT
E R
BR
EM
OT
E R
C12
VD
CA
D-2
6-6
AD
-26A
-6A
D-2
6T-6
120V
50/
60H
zA
D-2
7-6
AD
-27A
-6A
D-2
7T-6
240V
50/
60H
zA
D-5
7-6
AD
-57A
-6A
D-5
7T-6
** R
efer
to r
emot
e m
odel
num
ber
as a
n ex
ampl
e fo
r M
aste
r.
NO
TE
S:1.
Des
k Se
t spe
aker
(m
icro
phon
e is
mou
nted
on
hand
set)
2.D
esk
Set s
peak
er v
olum
e co
ntro
l3.
Han
dset
ear
piec
e vo
lum
e co
ntro
l (m
ount
ed o
n ba
ck o
f ca
se)
4.Sp
eake
r/M
icro
phon
e5.
Off
/On/
Spea
ker
volu
me
cont
rol
6.Ta
lk/L
iste
n sw
itch
7.“C
all”
Ton
e Sw
itch
8.M
aste
r sw
itch
box
— c
usto
mer
sup
plie
d9.
DPD
T s
elec
tor
(tog
gle)
sw
itch
— c
usto
mer
sup
plie
d
Ope
rati
ng P
rinc
iple
:1.
Mas
ter
can
sele
ct (
via
mas
ter
switc
h bo
x) to
talk
to a
ny o
ne o
r m
ore
rem
otes
.2.
Any
rem
ote
can
initi
ate
a ca
ll to
Mas
ter
rega
rdle
ss o
f se
lect
or s
witc
h be
ing
onor
off
. Rem
ote
mus
t spe
cify
its
loca
tion.
Rem
otes
can
not t
alk
to o
ther
rem
otes
.3.
To ta
lk in
to in
terc
om, p
ress
talk
sw
itch
and
spea
k in
to s
peak
er/m
icro
phon
e.R
elea
se ta
lk s
witc
h to
list
en.
4.Fo
r M
aste
r to
talk
to r
emot
e, s
elec
t des
ired
rem
ote
via
sele
ctor
sw
itch,
pre
ssta
lk s
witc
h on
han
dset
mic
roph
one
and
talk
into
han
dset
mic
roph
one.
12
NOTES:1. Speaker/Microphone2. Off/On/Speaker volume control3. Outgoing Volume Control4. Speaker Model AD-SS-25 with swivel mounting
bracket or Speaker Model AD-SF-25 with holesin outer flange for flush mounting
5. PTT (press-to-talk) switch—customer supplied
OPERATING PRINCIPLE:1. Master station is both a speaker and a microphone.2. Master is normally in “Listen” mode until the PTT (press-to-talk) switch is pressed to
talk to slave.3. Outgoing and incoming volumes are controlled by separate controls on slave.4. Slave talks to master hands-free, without having to press a talk switch.
POWER CONNECTIONS:BLK +DC Power 12/24V ModelsWHT Common 12/24V Models
POWER SLAVE12-18VDC AD-26D-8-M44
GRN WHTRED BLK
GRN 1 WHT 2
AUDIO
CONTROL
200 FT. MAX.
COMMON
290A4068
SLAVE
MASTER SPEAKER
1
2
4
3
SEE POWERCONNECTIONS
BLKWHT
1K1WATT
*
*
5
MASTERSPEAKER
-18-
13O
pera
ting
Pri
ncip
le:
•W
hen
one
talk
s, a
ll in
terc
oms
will
hea
r.•
To ta
lk to
oth
er s
tatio
ns, p
ress
the
talk
/list
en s
witc
h an
dsp
eak
into
the
spea
ker/
mic
roph
one.
Rel
ease
talk
sw
itch
tolis
ten.
•Pr
essi
ng th
e ca
ll bu
tton
on r
emot
e A
pro
vide
s a
cont
act
clos
ure
for
an a
ttent
ion-
getti
ng a
uxili
ary
sign
alin
g de
vice
,e.
g. a
str
obe
light
.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Lis
ten/
Talk
Sw
itch
4.“C
all”
Sw
itch
5.C
usto
mer
-Sup
plie
d A
uxili
ary
Sign
alin
g D
evic
e (e
.g.,
stro
belig
ht)
Pow
erR
emot
e A
Rem
ote
B
12-1
8VD
CA
D-2
6-3
AD
-26
120V
50/
60H
zA
D-2
7-3
AD
-27
22-3
0VD
CA
D-5
6-3
AD
-56
240V
50/
60H
zA
D-5
7-3
AD
-57
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sH
OT
120/
240V
Mod
els
WH
TC
omm
on12
/24V
Mod
els
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
only
BLK
AU
DIO
CA
BLE
AU
DIO
CA
BLE
TO
OT
HE
RIN
TE
RC
OM
SA
UD
IOLI
NE
RE
D
WH
T
BLK
- P
OW
ER
+ P
OW
ER
WH
T
GR
N
290A
4069
RE
MO
TE
"A
"R
EM
OT
E "
B"
AU
XIL
LIA
RY
SIG
NA
LIN
G D
EV
ICE
1
5
3
2
1K
1W
AT
T
SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
* *B
LKW
HT
GR
N*
1 32 4
-19-
14
-20-
Ope
rati
ng P
rinc
iple
:•
Mas
ter
pres
ses
talk
sw
itch
to ta
lk to
rem
ote.
•M
aste
r ca
n tu
rn m
onito
r sw
itch
on a
nd h
ear
ever
ythi
ng g
oing
on
at r
emot
e.•
Whe
n m
aste
r m
onito
r sw
itch
is o
ff, r
emot
e m
ust
pres
s ta
lk s
witc
h to
talk
to m
aste
r.•
Whe
n m
aste
r m
onito
r sw
itch
is o
n, r
emot
e ca
n ta
lkto
mas
ter
hand
s-fr
ee w
ithou
t pre
ssin
g th
e ta
lksw
itch.
•M
aste
r su
pplie
s po
wer
to r
emot
e un
it.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Pres
s-To
-Tal
k Sw
itch
4.M
aste
r M
onito
r Sw
itch
Pow
erM
aste
rR
emot
eN
ot a
pplic
able
AD
-26-
1-2
120V
50/
60H
zA
D-2
7C-1
-M22
PO
WE
R C
ON
NE
CT
ION
S:B
LK
HO
T12
0/24
0V M
odel
sW
HT
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
GR
N
BLK
WH
T
GR
N
BLK
WH
T
AU
DIO
CO
MM
ON
CO
NT
RO
L
RE
DR
ED
(+)
PO
WE
R
290A
4070
MA
ST
ER
RE
MO
TE
1 32 4
1
3
2
1K
1W
AT
T
SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
* *
15
-21-
GR
N
BLK
WH
T
GR
N
BLK
WH
T
AU
DIO
CO
MM
ON
CO
NT
RO
L
290A
4071
MA
ST
ER
SLA
VE
1 32 4
1
3
2
1K
1W
AT
T
SE
E P
OW
ER
CO
NN
EC
TIO
NS
BLK
WH
TG
RN
* *B
LKW
HT
GR
N*
Ope
rati
ng P
rinc
iple
:•
Mas
ter
pres
ses
talk
sw
itch
to ta
lk to
sla
ve.
•M
aste
r ca
n tu
rn m
onito
r sw
itch
on a
nd h
ear
ever
ythi
ng g
oing
on
at s
lave
.•
Whe
n m
aste
r m
onito
r sw
itch
is o
ff, s
lave
mus
tpr
ess
talk
sw
itch
to ta
lk to
mas
ter.
•W
hen
mas
ter
mon
itor
switc
h is
on,
sla
ve c
an ta
lkto
mas
ter
hand
s-fr
ee w
ithou
t pre
ssin
g th
e ta
lksw
itch.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Pres
s-To
-Tal
k Sw
itch
4.M
onito
r O
n/O
ff S
witc
h
Pow
erM
aste
rSl
ave
120V
50/
60H
zA
D-2
7C-M
22A
D-2
7-2W
3
PO
WE
R C
ON
NE
CT
ION
S:B
LK
HO
T12
0/24
0V M
odel
sW
HT
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
16
-22-
GR
N
RE
D
WH
T
BLK
GR
N
RE
D
WH
T
BLK
GR
N
RE
D
WH
T
BLK
AU
DIO
+ D
C P
OW
ER
CO
MM
ON
CO
NT
RO
L
290A
4072
MA
ST
ER
"A
"S
LAV
EM
AS
TE
R "
B"
3
3
2 4 8
4
1
77
2
211
DC
PO
WE
R
(+)
(-)
1K 1WA
TT
5
6
4
RE
DB
LKG
RN
WH
T
SP
KR
HE
AD
SE
TS
PK
RH
EA
DS
ET
SP
KR
HE
AD
SE
T
Ope
rati
ng P
rinc
iple
:•
Mas
ters
nor
mal
ly li
sten
(m
onito
r) s
lave
.•
Slav
e ca
n ta
lk to
mas
ter
hand
s-fr
ee w
ithou
tha
ving
to p
ress
a ta
lk s
witc
h.•
Whe
n on
e st
atio
n ta
lks,
oth
er s
tatio
ns w
illhe
ar.
•To
talk
to o
ther
sta
tions
, mas
ter
mus
t pre
ss a
talk
sw
itch
on in
terc
om o
r on
bel
t sw
itch.
•M
aste
r an
d sl
ave
can
sele
ct to
talk
/list
en o
nei
ther
the
spea
ker/
mic
roph
one
or h
eads
et v
iase
lect
or s
witc
h.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Pres
s-To
-Tal
k Sw
itch
4.H
eads
et/S
peak
er S
elec
tor
Switc
h5.
#137
145
Hea
dset
w/n
oise
-can
celin
gm
icro
phon
e6.
#137
146
Bel
t sw
itch
w/1
5 ft
. cor
d7.
Rec
epta
cle
for
head
set
8.12
ft.
cord
for
rem
ote
cust
omer
-sup
plie
dhe
adse
t rec
epta
cle
Pow
erM
aste
r A
Mas
ter
BSl
ave
12-1
8VD
CA
D-2
6C-1
-M80
AD
-26C
-1-M
34A
D-2
6D-1
-M34
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sW
HT
Com
mon
12/2
4V M
odel
s
17
-23-
GR
N
RE
D
WH
T
BLK
GR
N
WH
TOB
SE
RV
E C
OLO
R C
OD
E
GR
N
RE
D
WH
T
BLK
AU
DIO
+ D
C P
OW
ER
CO
MM
ON
CO
NT
RO
L
AU
DIO
+ D
C P
OW
ER
CO
MM
ON
CO
NT
RO
L
290A
4073
MA
ST
ER
"A
"M
AS
TE
R "
B"
SLA
VE
3
5
2
1
3
2
2
PO
WE
R
(+)
(-)
1K
1WA
TT
1
4
RE
D
BR
N
OR
YE
L
* BLU
(
+ D
C P
OW
ER
FR
OM
MA
ST
ER
"B
")*
BLK
(
CO
NT
RO
L F
RO
M M
AS
TE
R "
B")
*
Ope
rati
ng P
rinc
iple
:•
Mas
ter
norm
ally
list
ens
to s
lave
.•
Slav
e ta
lks
to m
aste
r ha
nds-
free
, with
out
havi
ng to
pre
ss a
talk
sw
itch.
•W
hen
any
mas
ter
pres
ses
talk
sw
itch,
sla
vehe
ars.
Oth
er m
aste
r w
ill a
lso
hear
.•
To ta
lk in
to m
aste
r, pr
ess
talk
sw
itch
and
spea
k in
to s
peak
er/m
icro
phon
e. R
elea
seta
lk s
witc
h to
list
en.
•M
aste
r B
can
talk
by
pres
sing
eith
er th
e ta
lksw
itch
or e
xter
nal s
witc
h (c
usto
mer
supp
lied)
.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Pres
s-To
-Tal
k Sw
itch
4.E
xter
nal P
ress
-To-
Talk
Sw
itch,
Mom
enta
ry(e
.g.,
foot
sw
itch)
5.4-
cond
ucto
r/16
-22
gaug
e ca
ble.
Use
shie
lded
cab
le in
ele
ctri
cally
noi
sy a
reas
.G
roun
d on
e en
d of
the
shie
ld to
“ea
rth”
grou
nd.
Gro
und
chas
sis
of D
C u
nits
togr
ound
.
Pow
erM
aste
r A
Mas
ter
BSl
ave
12-1
8VD
CA
D-2
6C-1
AD
-26C
-1-2
AD
-26D
-122
-30V
DC
AD
-56C
-1A
D-5
6C-1
-2A
D-5
6D-1
PO
WE
R C
ON
NE
CT
ION
S:B
LK
+D
C P
ower
12/2
4V M
odel
sW
HT
Com
mon
12/2
4V M
odel
s
18
-24-
Ope
rati
ng P
rinc
iple
:•
Mas
ter
can
sele
ct to
mon
itor
any
one
or m
ore
rem
otes
via
mas
ter
switc
h bo
x.•
To ta
lk to
rem
ote(
s), m
aste
r cl
oses
des
ired
sel
ecto
r sw
itch,
pres
ses
talk
sw
itch,
and
spe
aks
into
the
spea
ker/
mic
roph
one.
Mas
ter
rele
ases
talk
sw
itch
to li
sten
.•
Sele
cted
rem
ote(
s) ta
lk to
mas
ter
“han
ds-f
ree”
with
out h
avin
gto
pre
ss r
emot
e ta
lk s
witc
h.•
Rem
otes
can
not t
alk
to o
ther
rem
otes
.•
Rem
otes
not
sel
ecte
d by
mas
ter
cann
ot ta
lk h
ands
-fre
e an
dm
ust p
ress
talk
sw
itch
to in
itiat
e ca
ll to
mas
ter.
•W
hen
initi
atin
g a
call
to m
aste
r, re
mot
e m
ust s
peci
fy it
slo
catio
n fo
r m
aste
r to
res
pond
.
NO
TE
S:1.
Spea
ker/
Mic
roph
one
2.O
ff/O
n/Sp
eake
r V
olum
e C
ontr
ol3.
Talk
/Lis
ten
Switc
h4.
Mas
ter
Sele
ctor
Sw
itch
(cus
tom
er s
uppl
ied)
5.D
oubl
e-Po
le (
OFF
-ON
) To
ggle
Sel
ecto
r Sw
itch
Pow
erM
aste
rR
emot
es12
0V 5
0/60
Hz
AD
-27C
-1A
D-2
7D-M
49
PO
WE
R C
ON
NE
CT
ION
S:B
LK
HO
T12
0/24
0V M
odel
sW
HT
Neu
tral
120/
240V
Mod
els
GR
NE
arth
Gro
und
120/
240V
Mod
els
290A
4074
RE
MO
TE
"B
"
MA
ST
ER
SE
E P
OW
ER
CO
NN
EC
TIO
NS
MA
ST
ER
SE
LEC
TO
R S
WIT
CH
BO
X
TO
RE
MO
TE
RB
*
RE
MO
TE
"A
"
1
4
2
BLK
WH
TG
RN
TO
OT
HE
R R
EM
OT
ES
1
32
BLK
WH
TG
RN
**
BLK
WH
TG
RN
*
BLK
RE
D
GR
N
WH
T
BLK
RE
D
GR
N
WH
T
BLK
RE
D
GR
N
WH
T
BLK
RE
D
RC
RB
RA
GR
N
WH
T
5
3
1 23
19
-25-
WIR
ING
RE
FE
RE
NC
E C
HA
RT
AU
DIO
CA
BL
EP
OW
ER
CA
BL
EM
OD
EL
NO
.B
LA
CK
WH
ITE
GR
EE
NR
ED
BL
AC
KW
HIT
EG
RE
EN
AD
-26-
1-M
34+
DC
PO
WE
RC
OM
MO
NA
UD
ION
/A*
N/A
*N
/A*
N/A
*A
D-2
6C-M
34C
ON
TR
OL
CO
MM
ON
AU
DIO
N/A
*12
-18
VD
CC
OM
MO
NN
/A*
AD
-26C
-7-M
82C
ON
TR
OL
CO
MM
ON
AU
DIO
N/A
*12
-18
VD
CC
OM
MO
NN
/A*
AD
-26D
-1-M
82+
DC
PO
WE
RC
OM
MO
NA
UD
IOC
ON
TR
OL
N/A
*N
/A*
N/A
*A
D-2
6D-1
-M84
+D
C P
OW
ER
CO
MM
ON
AU
DIO
CO
NT
RO
LN
/A*
N/A
*N
/A*
AD
-26S
A-2
5A
UD
IOC
OM
MO
NN
/A*
N/A
*12
-18
VD
CC
OM
MO
NN
/A*
AD
-27-
M34
AU
DIO
CO
MM
ON
N/A
*N
/A*
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-27-
M82
AU
DIO
CO
MM
ON
N/A
*N
/A*
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-27-
M83
AU
DIO
CO
MM
ON
N/A
*N
/A*
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-27A
-4-M
34A
UD
IOC
OM
MO
NN
/A*
N/A
*12
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
DA
D-2
7A-7
-M83
AU
DIO
CO
MM
ON
N/A
*N
/A*
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-27C
-1(-
4)+
DC
PO
WE
RC
OM
MO
NA
UD
IOC
ON
TR
OL
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-27C
-1-7
(-4)
+D
C P
OW
ER
CO
MM
ON
AU
DIO
CO
NT
RO
L12
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
DA
D-2
7C-M
34C
ON
TR
OL
CO
MM
ON
AU
DIO
N/A
*12
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
DA
D-2
7SA
-25
AU
DIO
CO
MM
ON
N/A
*N
/A*
120V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-56C
-M34
CO
NT
RO
LC
OM
MO
NA
UD
ION
/A*
22-3
0 V
DC
CO
MM
ON
N/A
*A
D-5
6C-7
-M82
CO
NT
RO
LC
OM
MO
NA
UD
ION
/A*
22-3
0 V
DC
CO
MM
ON
N/A
*A
D-5
6SA
-25
AU
DIO
CO
MM
ON
N/A
*N
/A*
22-3
0 V
DC
CO
MM
ON
N/A
*A
D-5
7-M
83A
UD
IOC
OM
MO
NN
/A*
N/A
*24
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
DA
D-5
7A-1
(-4)
+D
C P
OW
ER
CO
MM
ON
AU
DIO
N/A
*24
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
DA
D-5
7A-7
-M83
AU
DIO
CO
MM
ON
N/A
*N
/A*
240V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-57C
-M34
CO
NT
RO
LC
OM
MO
NA
UD
ION
/A*
240V
50/
60 H
zN
EU
TR
AL
EA
RT
H G
ND
AD
-57S
A-2
5A
UD
IOC
OM
MO
NN
/A*
N/A
*24
0V 5
0/60
Hz
NE
UT
RA
LE
AR
TH
GN
D
N/A
*: N
ot A
pplic
able
3.88 5.68
5.00 6.50
4.84
9.88
290A3697
.412 HOLES∅
20
-26-
2561494GREV. G 10/01Printed in U.S.A.