Simplex 2120 General Information User guide

CAUTION

ELECiRlCAL HAZARD

Disconnect electrical power when making any internal
adjustments or rebairs. Installation and servicing
should be performed by qualified Simplex Representa­tives.

CAUTION

POWERING REQUIREMENT

When removing payer from this system, disconnect
batteries FIRST and1 AC power last. When connecting
power to this system. connect AC power FIRST and
batteries last.

HOW TO USE THIS PUBLICATION

This publication provides information on 2120 Multiplex dual channel voice communications systems. Typical
equipment configurations are illustrated, as are specific interconnections between 2120 and 2001 equipment.

This manual is divided into the following sections:

l

MAIN EQUIPMENT

l

REMOTE EQUIPMENT

l

CLASS A AUDIO FOR DUAL CHANNEL SYSTEMS

For More Detailed lnformation . . .

refer to the documents listed below.

2001 Voice Communications Wiring Diagrams

2001 Systems Troubleshooting Guide

2001 Voice Communications Module Descriptions

System interconnection drawings for the specific installation

Equipment cabinet drawings for the specific installation

INTRODUCTION

2120 Multiplex dual channel voice communications systems are similar to single channel systems. Both use 2001
voice communications equipment to provide their basic functions. However, a dual channel voice system has an
advantage over a single channel system: The dual channel system can transmit two different audio messages
to separate areas of a building at the same time. Simultaneous operation requires some special features:

l

A set of SMPL programs that appropriately operate system speaker circuits.

l

Two audio control modules.

l

Two riser power preamps.

l

Two audio risers.

AND

l

(In certain applications) Special FABT or ET dual channel audio relay boards.

There are two basic configurations for 2120 dual channel audio systems (Figures 1A and 1B). The difference
between the two is the size of the SCC used. Figure 1A illustrates a system in which a lo-module SCC is used;
in this application, the two riser power preamps are located in the SCC cabinet (along with the microphone
enclosure assembly, if used).

-w------------w------,

r

I

,I sf$;ES TRANSFORMER 1 ,

-----------------

r

AUDIO IN TO EACH

lNOlVlDUALAUDlORELAV

I I

FABT

CONTROLLER

BOARD

AUDIO
RELAY

BOARD

INTERFACE

I

REMOTE

AMPLIFIER

I I

1

I

TO OTHER
VPBTS IN

L

-THE SAME

L--------------------4

CABINET

I

CABINET

COMMUNICATIONS II

SPEAKER
CIRCUITS

BMUX AND SCC CABINETS

CLOSE-NIPPLED (SIDE BY SIDE).

BMUX see

DUAL VOICE

EOUIPMENT

n

‘1’

. AUDIO

HARNESS

TYPE t
TRAiSFORMER
CABINET (VPBT)

CABINET

-----

r
I

EVACUATE ALERT

POWER POWER

PREAMP PREAMP

EVACUATE

AUDIO

RISER

"

17
{’

ALERT
AUDIO

RISER

2120 Dual Channel Voice Communications Block Diagram

(1 O-Module SCC Only)

FIGURE 1 A

2

Figure 1B illustrates an application in which a 30-module SCC is used. If that SCC contains a microphone
enclosure assembly, then the two riser power preamps must be mounted in a close-nippled transponder cabinet.

_--_-__--------

r-

_______ ----------,

l-

I

I
L---------------------

CABWET

-----1
I

.i

2120 Dual Channel Voice Communications Block Diagram

(304odule SCC Only)

FIGURE 1 B

Let’s look at the various components of the 2120 dual channel audio system. We’ll start with the main equipment.

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.

I

3

MAIN EQUIPMENT

This section discusses the dual channel audio equipment used in the BMUX, SCC, and riser preamp cabinets,
and the interconnections between that equipment and 2120 equipment.

THE BMUX (FIGURE 2)

A typical BMUX cabinet configuration in a dual channel application is shown in Figure 2. The dual channel audio
equipment used in the BMUX cabinet is listed below.

l

An “ALERT” audio control module (2001-6005) which provides presignal tones and interfaces the

microphone to the audio system.

l

An “EVACUATE” audio control module (2001-6064) which provides evacuation signals and interfaces the
tape player (if used) to the audio system.

l

An optional message player assembly consisting of:

- a digital message player (2120-0238)

- a timer (2001-3042)

- two dual preamp monitor modules (2001-6027)

NOTES

1. All models prior to March, 1987 contain a tape player (2001-6046) rather than a digital message player (2120-

0238).

2. If a message player is not used, then a four-place card rack is supplied to house the preamp monitor modules.

l

DIGITAL

, MESSAGE

PLAYER
(OPTIONAL)

- ALERT
AUDIO

CONTROL

MODULE

’ EVACUATE

AUDIO

CONTROL

MODULE

Typical BMUX Cabinet iconfiguration

FIGURE 2

4

l

Models prior to March, 1987
contain a tape player rather than
a digital message player.

Figures 3 through 5 illustrate the interconnections between each dual channel audio component and the BMUX
equipment. Notice that the local BT is u&d to implement various audio functions, just as it is in the single channel
audio system.

AUDIO SYSTEM TROUBLE
FROM PREAMP MONITORS
TO LOCAL BT MONITOR

>

POINT 7

EVAC PREAMP

MONITOR

1

ALERT (TALK)

PREAMP MONITOR

+V IN FOR

AUDIO TROUBLE

RESET FROM
OSCILLATOR

CONTROL SWITCH

MODULE IN SCC

CABINET

+ V IN FROM
LOCAL BT CONTROL
POINT 1 TO ACTIVATE

I

AUDIO SYSTEM -

l-l-

Pl

TIMER

2

3 4

EVAC AUDIO CONTROL MODULE

OV FOR & J STOP TO

MESSAGE
(OR TAPE)

PLAYER

_, MESSAGE (OR TAPE)

1.

AJDIO

OUT
TOEVACUATE
AUDIO CONTROL
MODULE

MESSAGE (OR TAPE) RESET
FROM LOCAL BT
CONTROL POINT 2

Note: Refer to 2001 Systems

Troubleshooting Guide
and BMUX cabinet
drawing for 2001

module interconnections
not shown here.

Message Player Assembly

FIGURE 3

OV FOR OSC STOP
TO LOCAL BT
MONITOR POINT 5

>

OSCILLATOR CONTROL WlPREAMP MIXER

P3

MIKE/MUSIC

INTERFACE

BOARD

I

I

Note: Refer to 2001 Systems

Troubleshooting Guide

and BMUX cabinet drawing
for 2001 module interconnections
not shown here.

P2

. +V IN FROM OSCILLATOR

CONTROL SWITCH
MODULE FOR MANUAL

’ ALARM

OV IN FOR OSC
STOP FROM OSCILLATOR
CONTROL SWITCH MODULE

>

OV IN FOR OSC
STOP FROM
MICROPHONE

I I I I

I I

-

FROM DUAL CHANNEL
AUDIO EQUIPMENT
IN
SCC CABINET

CABINET, OR PREAMP
CABINET (AS APPROPRIATE

ALERT (TALK) Audio Control Module

FIGURE 4

6

OSCILLATOR CONTROL W/PREAMP MIXER

.-I,-~

6 5

10 9

12 11

14 13 -

16 15

-8 7

P3

+ V IN TO ACTIVATE
AUDIO SYSTEM FROM LOCAL BT
CONTROL POINT 1

+ V IN FOR MANUAL ALARM
FROM OSCILLATOR CONTROL SWITCH MODULE
IN SCC CABINET (VIA ALERT AUDIO CONTROL MODULE)

11 12

9 10

7 8

5 6

3 4
1 2

EL-

P2

+V IN FROM AUX. 1 TONE

FROM OSCILLATOR CONTROL
SWITCH MODULE

AUDIO OUT TO
EVAC POWER

APPROPRIATE)

Note: Refer to 2001 Systems

Troubleshooting Guide and

BMUX cabinet drawing

for 2001 module interconnections

not shown here.

+ V IN FOR AUX. 2 TONE
FROM OSCILLATOR CONTROL

SWITCH MODULE

OV IN FOR OSC STOP
FROM OSCILLATOR CONTROI
SWITCH MODULE

>

OV IN FOR OSC STOP
FROM MESSAGE (OR TAPE) PLAYER

>

EVACUATE Audio Control Module

FIGURE 5

FROM DUAL CHANNEL
AUDIO EQUIPMENT
IN SCC CABINET

c

Figure 6 shows two typical transponder specification sheets for the local BT, listing the functions of local BT
monitor and control points in a dual channel audio system.

SSimplex

TRANSPONDER SPECIFICATION WORKSHEET

NO ll-2)-

NDER NO ,1-63~-

NDER TYPE ,PROD ID!

I CHANNEL No ~1.21~
2 TRANSPONDER NO 11.631-

da) 11 ;;N’ 11 CUSTOM LABE

2120 TRANSPONDER CONTINUATION SPECIFICATION SHEET

channe

Typical Transponder Specification Worksheets

for Local BT Dual Channel Voice Comm. Functions

FIGURE 6

8

THE SCC (FIGURE 7)

The typical SCC cabinet configuration in a 2120 dual channel voice communications system is shown in Figure

7. The dual channel audio equipment used in the SCC cabinet is listed below.

l

A dual power preamp assembly (2001-6063).

0 A microphone enclosure assembly (2001-6030), consisting of a microphone panel and an oscillator control

switch module for dual channel audio applications (2001-6065). (Instead of an ALL CIRCUITS switch, this
oscillator control switch module has a three-position ALL TALK/OFF/ALL EVAC switch.)

0 One or more three-position maintained SCC switch modules (2120-731 l), used for speaker circuit selection

(center position = automatic; up position = ALERT; down position = EVACUATE).

Note: If a fire fighter’s phone is used in a 30-module SCC, then the dual preamp assembly mounts in a close-

nippled transponder cabinet. Interconnections, however, remain the same.

Typical SCC Cabinet Configuration

FIGURE 7

FIRE FIGHTER’S

,TELEPHONE

ASSEMBLY

MICROPHONE

.ENCLOSURE

ASSEMBLY

9

Figures 8 and 9 illustrate the interconnections between the’ SCC dual channel equipment and the equipment in

the BMUX cabinet.

+ V OUT TO BOTH
AUDIO CONTROL MODULES
WHEN MANUAL ALARM SWlTCH
ACTIVATED

+ V OUT TO EVAC
AUDIO CONTROL MODULE WHEI
AUX. 1 TONE SWITCH
ACTIVATED

+ V OUT TO EVAC
AUDIO CONTROL MODULE
WHEN AUX. 2 TONE
SWITCH ACTIVATED

OSCILLATOR CONTROL

SWITCH MODULE

I III

MICROPHONE

ASSEMBLY

1

TO DUAL CHANNEL
AUDIO EQUIPMENT
IN BMUX CABINET

/

OV OUT WHEN OSC STOP
SWITCH ACTIVATED

+ V AUDIO TROUBLE RESEl
OUT TO PREAMP MONITOR
MODULES IN BMUX
CABINET

+ V OUT TO LOCAL BT
MONITOR POINT 6 WHEN
ALL CALL TALK SWlTCH

>

ACTIVATED

+ V OUT TO LOCAL BT

f%YEzzll~:
ACTIVATED

Microphone Enclosure Assembly

with Oscillator Control Switch Module

lN BMUX CABINET

AUDIO
EQUIPMENT
IN BMUX
CABINET

Note: Refer to 2001 Systems

Troubleshooting Guide and
SCC cabinet drawing
for 2001 module
interconnections not
shown here.

FIGURE 8

10

l-7

AUDIO SIGNAL IN
FROM TALK AUDIO
CONTROL MODULE IN
BMUX CABINET

AUDIO SIGNAL IN FROM
EVAC AUDIO CONTROL
MODULE IN BMUX CABINET

PREAMP

TBl

\I

TALK AUDIO RISER
OUT TO TRANSPONDERS
VIA CONTRACTOR
TERMINAL BLOCK

1. Refer to your system’s interconnection diagram for

2. Riser preamps only mount in lo-module SCCs; if a

3. Refer to 2001 Systems Troubleshooting Guide

ALERT
(TALK)

RISER

p\ __

Ii __-

1

I ’

NOTES

audio riser terminations.

30-module SCC is used, then the preamps mount
in a separate cabinet close-nippled to the SCC or
BMUX cabinet.

and appropriate cabinet drawing for 2001 module
interconnections not shown here.

SIG IN

-0v

. -0v

+24-

2

1

TBl

I

EVAC AUDIO RISER
OUT TO TRANSPONDERS
VIA CONTRACTOR
TERMINAL BLOCK

EVACUATE

RISER

PREAMP

TALK and EVACUATE Riser Preamps

FIGURE 9

11

REMOTE EQUIi’MENT

This section deals with the dual channel voice communications equipment used in FABT and ET cabinets and how
that equipment is tied into the two 2120 audio risers. There are two FABT and ET cabinet configurations in dual
channel audio systems.

TYPE 1 TRANSPONDER CABINETS

All speaker circuits in a Type 1 transponder cabinet use either the “ALERT” audio signal or the “EVACUATE”
audio signal -

(A) Contain one or more VPBTs.

(B) Consist of an ET containing standard audio relay boards.

Note: The abbreviation “VPBT” (voice/phone basic transponder) refers to an FABT containing standard audio

relay boards.

The VPBT

VPBTs in a Type 1 configuration are almost identical to VPBTs in a standard audio application. Two extra
components are used in the Type 1 VPBT cabinet:

BUT NOT BOTH. A Type 1 transponder cabinet could either:

OR

l

An audio interface transformer/relay switcher (617-221), which performs two functions:

-

It interfaces the incoming audio signal to the cabinet’s audio amplifier.

AND

-

It selects which audio riser signal will be used by the speaker circuits in the associated VPBT(s). (The
switching relay is operated by a transponder control point via SMPL programming.)

l

An audio riser monitor (562-125) and associated mounting hardware, The monitor is required only when a
Type 1 VPBT cabinet is electrically the last in line on the audio risers. The audio riser monitor supervises
the ALERT riser for opens or shorts. A transponder monitor point is used to supervise the audio riser
monitor’s trouble output.

Except for these two differences, VPBTs in standard and Type 1 applications are identical. Figure 10 shows how

the audio interface transformer/relay switcher and the audio riser monitor tie into the dual channel audio risers.

The ET

ETs in a Type 1 configuration are almost identical to ETs in a standard audio application. The difference between
the two are the same as the differences that exist between the standard and Type 1 VPBTs. In fact, both the Type

1 VPBT and Type 1 ET use the same dual channel audio components. Figure 10 shows how the audio interface

transformer/relay switcher and the audio riser monitor tie into the dual channel audio risers.

12

r

I I.. I

\ FROM TALK

AUDIO RISER
(SEE NOTE)

I@ Mz II I A

II I+24

1

REMOTE

AUDIO

AMPLIFIER

I

!i

I

I

i lEtI

TO VPBT OR
ET CONTROL
POINT VIA

. . . -...-I1

FROM EVAC
AUDIO

>

RISER

AUDIO INTERFACE

\

TRANSFORMER/RELAY
SWlTCHER

Note: In the last Type 1 VPBT or ET cabinet in the

system, the TALK audio riser will be
supervised by an audio riser monitor. In such
cases, the TALK audio riser will be factoty­wired to the audio riser monitor and from there
connected to the interface transformer/relay
switcher.

Remote Amplifier Connections

FIGURE 10

13

TYPE 2 TRANSPONDER CABINETS

The speaker circuits in a Type 2 transponder cabinet use the signals on both audio risers to provide “ALERT”

and “EVACUATE” tones to different building areas simultaneously. For example, suppose the speaker circuits for
floors 1, 2, and 3 in a building were controlled by equipment in a Type 2 transponder cabinet. An EVACUATE
signal could then be sent out over the second floor speaker circuit, and an ALERT signal could be sent out on
the first and third floor speaker circuits AT THE SAME TIME. Appropriate equipment and SMPL programming
make the system work as required.

A Type 2 transponder cabinet could either:

(A) Contain one or more DABTs.

OR

(B) Consist of an ET containing simultaneous audio relay boards.

Note: The abbreviation “DABT” (dual audio basic transponder) refers to an FABT that uses a dual audio relay

board.

The DABT (Figure 11)

The DABT is quite different from any VPBT because it is designed for a Type 2 application. It uses equipment
different from that used in a VPBT. The typical DABT cabinet contains the equipment listed below.

l

A dual 50W amplifier (2001-6063) one amplifier for each audio riser.

l

Two audio interface transformers (2001-6056) one for each audio amplifier.

l

One or more dual audio relay boards (562-590).

Each DABT in a Type 2 cabinet provides:

l

Five monitor points.

l

A smoke reset output (for resetting 4-wire smoke detectors).

l

One simultaneous audio control point.

l

One control point used for selecting ALERT or EVACUATE signals.

0 One auxiliary control point.

Note: The auxiliary control point provides normally open dry contacts. It can be used as another simultaneous

audio control point, but both simultaneous audio control points on the same DABT must use the same
signal (either ALERT or EVACUATE) if two speaker circuits per floor are necessary.

Figure 12 illustrates how the DABT voice communications equipment is tied into each audio riser.

14

TALK REMOTE

AMPLIFIER WlTH
AUDIO INTERFACE

TRANSFORMER

EVACUATE REMOTE
AMPLIFIER WITH

-AUDIO INTERFACE
TRANSFORMER

Typical DABT Cabinet Configuration

FIGURE 11

15

TALK

AUDIO

RISER

EVAC

AUDIO

RISER

‘

I

J&

TALK

Al ,n,rr

rn”Yl”

RISER

OUT

AUDIO

INTERFACE Muy’” “:‘:

TRANSFORMER

AI #ml,.

DUAL AUDIO RELAY

BOARD (DABTS,

SIMULTANEOUS

AUDIO RELAY BOARD

(ETS, 562406)

/I

13

562-590)

OR

TALK AMP

I

+ V OUT FOR

AMP TBL; TO DABT

OR ET MONITOR POINT

FOR TROUBLE REPORT

AUUK

- “-‘-I SIGNAL OUT

DUAL AUDIO RELAY

BOARD (DABTS,

SIMULTANEOUS

AUDIO RELAY BOARD

_--_

TO

562~i90)

OR

(ETS, 562-506)

EVAC AMP

IN DABT

OR ET

CARINFT

I

+ V OUT FOR

AMP TBL; TO DABT

OR ET MONITOR POINT

FOR TROUBLE REPORT

d-J

J

I I

I I

\c

EVAC

AUDIO

RISER

ml1

--.

Dual Amplifier Connectlons

FIGURE 12

The ET (Figure 13)

The ET in a Type 2 application is shown in Figure 13. The dual channel audio equipment used in the Type 2 ET
cabinet is listed below.

l

A dual 50W amplifier (2001-6063), one amplifier for each audio riser.

l

Two audio interface transformers (2001-6056) one for each audio amplifier.

l

One or more simultaneous audio relay I/O boards (562-508).

Figure 12 illustrates how the ET voice communications equipment is tied into each audio riser.

TALK REMOTE
AMPLIFIER WITH
AUDIO INTERFACE­TRANSFORMER

EVAC REMOTE

AMPLIFIER WITH
AUDIO INTERFACE
TRANSFORMER

CLASS A AUDIO FOR DUAL CHANNEL SYSTEMS

This section discusses how we provide Class A audio operation for 2120 dual channel audio systems.

To provide Class A operation, all we need do is add a Class A audio monitor (562-125, Figure 14) for each of
our audio risers. There are two versions of the Class A audio monitor; the only difference between the two is the
way in which they are mounted. Both Class A audio monitors mount in the SCC cabinet as shown in Figure 15.

Class A Audio Monitor, 562-l 25

FIGURE 14

Figure 16 illustrates in block diagram form how the Class A monitor works. (For clarity, only one audio riser is
shown.) Each audio monitor simply “looks at” the end of its audio riser to ensure that the audio signal is 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 deenergizes to allow the audio signal to be fed from both ends of the audio riser.

Thus, all remote amplifiers still receive the audio signal. Local BT monitor point 3 is used to supervise the audio
monitors and report Class A activation.

The interconnections for each Class A audio monitor are shown in Figure 17.

16

MOUNTING LOCATION
FOR EVACUATE CLASS A
AUDIO MONITOR
(SAME AS AUDIO
INTERFACE TRANSFORMER
ON REMOTE AMPLIFIERS).

CONTRACTOR CONNECTOR
BLOCK AND BRACKET
WHERE CLASS A AUDIO

-MONlTOR FOR THE
ALERT AUDIO RISER
MOUNTS*

‘IF DUAL PREAMPS

ARE IN A SEPARATE
CABINET, THE CLASS A
AUDIO MONITORS WILL
BE LOCATED THERE.

SCC Cabinet,

Class A Audio Monitor Mounting Location

FIGURE 15

19

I

I

CLASS

A

AUDIO

MONITOR

I

Note: Only one monitor and audio

riser shown for clarity.

1

lr--j ii&z

1

Class A Audio Block Diagram

REMOTE

REMOTE

AMP ,,

I I

I I

FIGURE 16

END OF

AUDIO_l?ISER

,

+ 24V
AUDIO RESET
FROM MIKE

ENCLOSURE
ASSEMBLY IN
BMUX (VIA HARNESS

Note: Only evacuate monitor is shown here; connections for alert monitor are identical.

-)

(

9

TBL OUT TO LOCAL BT

TBl

B

POWER

PREAMP

AUDIO OUT

1

c

TO RISER

)I VIA CONTRACTOR

TERMINAL BLOCK

Class A Audio Monitor

Interconnections

FIGURE 17

20

Y

Ed 3 87

I

Simplex Time Recorder Co.. 0 Simplex Plaza l Gardner. Massachusetts 01441-0001 U.S.A.

MUX2-11-004