Simplex 2120 Configuration guide

S$implex
2120 Multiplex
Single Channel
Voice Communications
General Information
0 i987~i~Pl~XTl~OR~rderCo.,G~dner. Mass. 014414001 U.S.A.
MUx2-1l-003
Ed387
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CAUTION
ELECTRICAL HAZARD
Disconnect electrical power when making any internal
adjustments or repairs. installation and servicing
should be pettormed by qualifted Simplex Representa-
lives.
CAUTION
POWERING REQUIREMENT
When removing power from thii system, disconnect
batteries FIRST and AC power last. When connecting
power to this system. connect AC power FIRST and
batteries last.
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HOW TO USE THIS PUBLICATION
This publication provides information on 2120 Multiplex systems equipped with 2001 voice communications
equipment. Typical equipment configurations are illustrated, as are specific interconnections between 2120 and
2001 equipment.
This manual is divided into the following sections:
. MAIN EQUIPMENT
. REMOTE EQUIPMENT
. CLASS A AUDIO
Each of these sections is divided into subheadings covering specific topics.
IMPORTANT! This manual is intended for those who already have a solid background in 2120 Multiplex systems
and 2001 Voice Communications equipment. Refer to 2120 and 2001 voice communications
training materials for basic information.
FOR MORE DETAILED INFORMATION.. .
refer to the documents listed below.
2001 Voice Communications Wiring Diagrams
2001 Systems Troubleshooting Guide
2001 Voice Communications Module Descriptions
BMUX with Voice Communications interconnection, W.D. No. 801-529
2120 Multiplex System Installation manual
System interconnection drawings for the specific installation
Equipment cabinet drawings for the specific installation
M-21 20 and M-2120~ET initiating wiring diagrams
INTRODUCTION
2120 Multiplex systems that use 2001 voice communications equipment are configured differently from their 2001
counterparts. Since 2120 systems fall in the “large building” or “building complex” range of applications, a 2120
system equipped with voice communications equipment requires a special approach to system set up - we don’t
want to lose the multiplex advantage just because we want voice communications.
One major difference is shown in Figure 1. Since we must provide audio signals to each building floor, 2120
systems use what we call an audio riser. An audio riser is typically a single wire pair that carries an amplified
audio signal to transponder cabinets where the audio signal is applied to FABT or ET speaker circuits (via audio
relay boards). As you can see in the block diagram, most FABT or ET cabinets that contain audio relay boards
also contain an audio interface transformer and a remote amplifier.
The BMUX equipment cabinet contains the voice communication equipment required to originate system audio
signals. The SCC cabinet, usually close-nippled to the BMUX cabinet, contains what we call the power preamp.
This preamp boosts the original audio signal so that the signal can make it to its destinations without loss of
quality. The equipment in the BMUX cabinet is connected to equipment in the SCC cabinet via a harness
assembly; the BMUX’s local BT is used to monitor and control both BMUX and SCC audio equipment conditions.
1
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Let’s look at the various components of a 2120 voice communications system. We’ll start where the original audio
signal starts - at the beginning of the audio riser.
Throughout this publication we will use 2001 product identification numbers for voice
communication equipment to make it easier for you to cross-reference 2001 voice
communications documentation.
AUDIO RISER
TOOTHERTRANSPONDER
CA
AUDIO IN
TO EACH INDIVIDUAL
AUDIO REU”
iJ--*t+
OTHER TO
(TRANSPONDERS SPSAKER TRANSPONDER
n INTHESAME clRC”m CABINET I
I CABINET I
r----------------------
I
AUDIO IN
TO EACH lNDlVlD”AL :
AUDIO RELAV I
I
TRANBPoNDENB
INTHEBAME SPEAKER
cu?cun?3
I
CABINI
TMNSPONDER
CABINET i
I
DATATO/FROM
TNANSPONDENB
EMUX
CABINET
COMMUNlCAllON$
CLOSE-
NIPPLED
CABINETS
n
I I
\I
A&O
HARNESS
SCC
CABINET
iG--t----+--p WSER
OUT
IETS
\
2120 Voice Communications Block Diagram
FIGURE 1
2
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MAIN EQUIPMENT
This section discusses the voice communications equipment used in the BMUX and SCC cabinets, and also the
interconnections between that equipment and 2120 equipment.
THE BMUX (FIGURE 2)
A typical BMUX cabinet configuration in a 2120 voice communication system is shown in Figure 2. The voice
communications equipment used in the BMUX cabinet is listed below.
l A microphone enclosure assembly (2001-6030) consisting of:
- an oscillator control switch module (2001-6039)
- One of the following preamp monitor modules:
(a) 2001-6027, used in systems with no backup amplifiers.
(b) 2001-6029, used in systems with backup amplifiers.
l An audio control module (2001-6005)
l An optional message player assembly consisting of:
- a digital message player (2120-0236)
- a timer (2001-3042)
- a four-place card rack (2001-3067)
NOTES
1. All models prior to March, 1967 contain a tape player (2001-6046) rather than a digital message player (2120-
0238).
2. A fire fighter’s telephone could be used in place of a message player assembly. (If both are required, the
telephone will be mounted in the SCC cabinet.) The fire fighter’s phone is described in the 2120 Multiplex Fire
Fighter’s Telephone - General Information
publication.
Figures 3 through 5 illustrate the interconnections between each voice communications component and the BMUX
equipment. You’ll notice that local BT monitor and control points are used to implement various audio functions
(such as monitoring the ALL CIRCUITS switch on the oscillator control switch module or supervising the preamp
monitor module). We do this so that programs can be written to make the voice communication system operate
as we want. For example, local BT control point 1 is used to activate the audio system on alarm - a programmed
function.
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AUDIO
CONTROL
MODULE
* DIGITAL
1 MESSAGE
PLAYER
(OPTIONAL)
l Models prior fo March, 1987
contain a tape player rather than
a digital message player.
Typical BMUX Cabinet Configuration
FIGURE 2
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L
+volJT
FOR PREAM
MONlTOR
TROUBLE
-
-
-
MICROPHONE
ENCLOSURE
\vollT
VHEN ALL ClRCUlTS
5WlTCH ACTIVATED
NOTE: Only one input “leg” is needed at each
local BT monitor point because:
0 +V looks like a short to a local BT
monitor point.
0 OV looks like an abnormal condition to
local BT monitor point 5.
--OV OUT WHEN
OSC STOP SWITCH
ACTIVATED;
USED IN
PROGRAMMING
TO BYPASS AUDIO
TROUBLES DURING
OSCILLATOR STOP
CONDlTlONS
+V WHEN
AMP TROUBLE
(FROM POWER
PREAMP IN
SCC CABINET)
I
LOCAL BT
1 MONITOR
POINTS
(SEE NOTE)
(OSC STOP)
TB2 ON LOCAL BT I/O BOARD
Microphone Enclosure Assembly
FIGURE 3
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MIKE INTERFACE/MUSIC BOARD
TO MESSA&E (OR TAPE)
PLAYER ASSEMBLY;
ACTlVATED TIMER
TO COMPLETE
AUDIO SYSTEM
ACTlVATlON
(VIA HARNESS)
I
AUDIO sIGNAL
OUT TO
POWER PF
INSC- --
AUDIO SYSTEM (VIA HARI
r
IEAMP
:C CABINET
-NESS) + 24VDC FROM
BMUX POWER SUPPLY
VIA AC VO BOARD
TB2
CONTACT CLOSURE
OF CONTROL POINT 1
PROVIDES + V TO
ACTIVATE AUDIO
SYSTEM
;CllO COMMON I
0
9 N/C CONTACT I
-cl 0
NIO CONTACT LOCAL ET
q
CONTROL POINT
7 COMMON 1
III
6 NIC CONTACT
0 6 NIO CONTACT
cl4
17
3 COMMON
0 1
PART OF
2 N/C CONTACT CONTROL POINT
2
‘C
1 NIOCONTACT I
Audio Control Module
FIGURE 4
6
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ov-
+VINTO
ACTIVATE TIMER;
FROM LOCAL BT
CONTROL POINT 1 VIA
AUDIO CONTROL MODULE
TO AUDIO
CONTROL
MODUAL
r
r
MESSAGE (OR TAPE)
PLAYER
(OSC STOP I
.I
+ 24V POWER
TO MESSAGE (OR TAPE)
PLAYER; INTERRUPTED
MOMENTARILY VIA
CONTROL POINT 2
TO RESET PLAYER
]+24VDC FROM BMUX
0
9 N/C CONTACT
cl 6 WO CONTACT LOCAL BT
cl CONTROL POINT
7 COMMON 1
cl 6 N/C CONTACT
q
6 WOCONTACT
cl4 ’
cl 3 COMMON
cl
1
PART OF
2 NIC CONTACT CONTROL POINT
2
C
1 NtO CONTACT
I
POWER
L=
SUPPLY VIA
AC I/O BOARD TB2
10 COMMON
TB4 ON LOCAL BT l/O BOARD
Message Player Assembly
FIGURE 5
7
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Figure 6 shows two typical transponder specification sheets for the local BT, listing the functions of local BT
monitor and control points in a voice communications system.
s Simplex
2120 TRANSPONDER COI
TRANSPONDER SPECIFICATION WORKSHEET
YTINUATION SPECIFICATION SHEET
I ’ E b P - ”
j ” ’ ’ ’ ” ”
0 ,111 1’1, I I I
L-N 0‘ 1
’
i
R ; -,.a 3,‘
:,i’ 5 3 II 1x1 I II II
Y”
I lIlITl~lIl t
^-- ---- ,___---- -.- I..~-r_...._....--. .._--..
.- __
II
Local BT point assignments, 2120 dual channel
Co, no message player
I 1 , 8 ,, ,, , , , ,, ,, ,, ,au
TRANSPONDER SPECIFICATION WORKSIiEET Jy~~Jc”L!i!L [Ti=R&sLl*~ ” \
,.,wc 1
cII3II
IxlIIIII
11 11x1
1 1 11 11
YllW
7 ‘2
N]
Typical Transponder Specification
Worksheets For Local BT Voitx’Comm. Functions
FIGURE 6
THE SCC (FIGURE 7)
The typical SCC cabinet configuration in a 2120 voice communications system is shown in Figure 7. The SCC
cabinet can either contain:
0 A single power preamp assembly (2001-6062).
OR
l If a backup amplifier is required, a dual power preamp assembly (2001-6063).
Figure 8 illustrates the interconnection between the SCC power preamp and the equipment in the BMUX cabinet.
6
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MAIN POWER\
PREAMP
,
,
3
Typical SCC Cabinet Configuration
FIGURE 7
9
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AUDIO SIGNAL IN
CO::LA:;:ULE
IN BMUX
CABINET
(VIA HARNESS)
+ V OUT WHEN
AMP TROUBLE
TO LOCAL BT
MONlTOR POINT
7 VIA HARNESS
POWER
PREAMP
IN
BCC
CABINET
\I3 C,
Y
AUDIO OUT TO
AUDIO RISER
(VIA CONTRACTOR
CONNECTOR BLOCK
IN SCC CABINET-
SEE SPECIRC SCC
CABINET DRAWING
FOR DETAILS)
Power Preamp Connections
FIGURE 8
10
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REMOTE EQUIPMENT
This section discusses the voice communications equipment used in FABT and ET cabinets and how that
equipment is tied into the 2120 audio riser.
Note: The term “voice/phone basic transponder” (VPBT) refers to an FABT with audio equipment. We’ll use
“VPBT” to refer to such on FABT.
THE VPBT (FIGURE 9)
A typical VPBT cabinet configuration in a 2120 voice communications system is shown in Figure 9. The voice
communications equipment typically used in the VPBT cabinet is listed below.
l An audio interface transformer (2001-6056) when a remote amplifier is used.
l One of the following remote amplifier assemblies:
- a single 5OW amplifier (2001-6062).
OR
- a dual 50W amplifier (2001-6063) if backup is required.
l One or more audio relay boards. (See transponder parts list for audio relay board PINS.)
AUDIO
INTERFACE-
TRANSFORMER
CONTRACTOR
TERMINAL
BLOCK
lREMOTE
AMPLIFIER
Typical FABT (VPBT) Cabinet Configuration
FIGURE 9
11
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Figure 10 illustrates how VPBT equipment is tied into the audio riser.
AUDIO RISER
IN (VIA CONTRACTOR
TERMINAL BLOCK IN
VPBT O~ABINET)
TBl REMOTE
AMPLIRER
IN
VPBT OR ET
CABINET
AUDIO \ I
AUDIO RISER INTERFACE AUDk SIGNA; OUT
OUT OllA CONTRACTOR TRANSFORMER TO
TERMINAL BLOCK IN AUDIO RELAY BOARDS
VPBT OR ET CABINET) (VPBTS)
OR TO
AUDIO RELAY I10 BOARDS,
CLASS A (562450) (ETS)
+V OZWHEN
AMP TROUBLE;
TO AN ETOR
FABT MONlTOR
POINT FOR
TROUBLE REPORT
NOTE: Refer to M-2120 or M-212043 diagrams for connections to audio relay boards.
Remote Amplifier Connections
FIGURE 10
12
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A typical ET cabinet configuration in a 2120 voice communications system is shown in Figure 11. The voice
communications equipment typically used in the ET cabinet is listed below.
l An audio interface transformer (2001-6056) when a remote amplifier is used.
l One of the following remote amplifier assemblies:
- a single 50W amplifier (2001-6062).
OR
- a dual 5OW amplifier (2001-6063) if backup is required.
l One or more audio relay I/O boards (562-450).
Figure 10 illustrates how the ET voice communications equipment is tied into the audio riser.
*( CONTRACTOR
AUDIO \
INTERFACE I I* o TERMINAL
BLOCK
TRANSFORMER <
\
REYOT
AMPUAER
THE ET (FIGURE 11)
\
BACKUP
REMOTE
AMPLlFlER
(IF USED)
Typical ET Cabinet Configuration
FIGURE 11
13
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A SPECIAL NOTE ON AUDIO SUBRISERS
In many 2120 voice communications applications you will find VPBTs in remote locations
that do not use remote amplifiers. If such a VPBT is not close-nippled to a VPBT cabinet
containing a remote amplifier, we must supervise the audio wiring between the two VPBTs.
We call such audio wiring an audio subriser.
The audio subriser is supervised via an audio relay circuit in the VPBT cabinet containing
the remote amplifier. The drawing below illustrates a typical audio subriser application.
CLASS A AUDIO
This section discusses how we provide Class A audio operation for standard 2120 voice communications systems.
To provide Class A operation, all we need do is add a single component - the Class A audio monitor assembly,
617-278 (Figure 12). This assembly consists of an audio monitor board and a mounting bracket; it mounts in the
SCC cabinet as shown in Figure 13.
BRACKET CLASS A
.AUDIO MONlTOR
BOARD
(PIN 562425)
Class A Audio Monitor Assembly, 617-276
FIGURE 12
14
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MOUNTlNG LOCATlON
FOR CLASS A AUDIO
MONlTOR ASSEMBLY
(SAME AS AUDIO
INTERFACE TRANSFORMER-
ON REMOTE AMPLIRERS)
Typical Location of Class A Audio Monitor
FIGURE 13
15
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Figure 14 illustrates.in block diagram form how the Class A monitor works. The audio monitor simply “looks at”
the end of the audio riser to ensure that the audio signal is indeed being received by all remote amplifiers. A break
in the audio riser results in a loss of audio at the audio monitor, and so its internal relay (Kl) simply energizes
to allow the audio signal to be fed from both ends of the audio riser.
REMOTE
AMP
0
REMOTE
r- -----I
0
I CONTRACTOR
I ’ TERMINAL BLOCK
I
1
I
--w.--: IN SCC
CABINET
CLASS A
AUDIO MONlTOR POWER
PREAMP
Class A Audio Block Diagram
FIGURE 14
Thus, all remote amplifiers still receive the audio signal. Local BT monitor point 3 is used to supervise the audio
monitor and report Class A activation.
The interconnections for the Class A audio monitor are shown in Figure 15.
END OF
A”F=fER
++ I-TBLOUTTOLOCALBT
I
+24V AUDIO RESEl
FROM MIKE
ENCLOSURE
ASSEMBLY -I
IN BMUX c
(VIA HARNESS)
.
I
0 5SKiIN
05 -6
04 -0”
0 2 +a TBl
02
01 I
U
/I
----
‘\
AUDIO OUT
------
B
c TO RISER
VIA CONTRACTOR
TERMINAL BLOCK
POWER
PREAMP
Class A Audio Monitor Interconnections
FIGURE 15
16
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BaSimplex
Ed 3 87 Simplex Time Recorder Co.,
l Simplex Plaza l Gardner, Massachusetts 01441 U.S.A. MUX2-1 i-003 1
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