Mccurdy Cs9100 User manual

www.SteamPoweredRadio.Com

\

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Section

2

3

4

5

6

7

Figure

1-1

/

-

INSTRUCTIONS

CS9100

lOxlO

INTERCOM

SYSTEM

INDEX

Subject

Genera

1

Des

cr i

pt

i on

Specifications

lnstal

lat

ion

Operation

Ma

i.ntenance

Parts

List

System

Drawings

LI

ST

OF

ILLUSTRATIONS

Title

BCD

Control

Wiring

McCURDY RADIO INDUSTRIES

LI

MITED

108 CARNFORTH ROAD,

TORONTO

,

ONTARIO

M4A 2L4

(416) 751-6262, TELEX 06-963533,

T\/1/X

610-492-1373

McCURDY

RAD

IO INDUSTRIES IN

C.

1711 CARMEN DRIVE, ELK GROVE

VILLAGE

, ILLINOIS 60007,

(312) 640-7077,

T\/1/X

910-222-0436

Page

4

8

9

.

11

12

13

14

Page

7

Issue

2

October

1977,

Page 1

of

13

Mccurdy

Radio Industries reserves the right, without notice to make such changes

in

equipment, design, specifications,

or

components

as progress in engineering or manufacturing techniques may warrant

to

improve the performance

of

the product.

www.SteamPoweredRadio.Com

CARS

MIC

INPUT

...

J

I

. 0 .

~

INPUT

SH

IE

LD

-

io

0~

1

--+-'"--~

...

)

2

-~

ct

--

'(

....

aus

GND

.

DYN MIC

/Ll~E

INPU

T

o--

-----~----....,1l 10

u~'?,~~.;_

-

----

-+-2------4--..,.'

_..,j..,.,--u~

4

'(,J

_'2,r

'-"

J.--+-+--

-----

'.

:.

r·

8

-

~-

..

•

!

X-

PO

INT

CTL

Aa

-u

,;

3-----.....t--~....,11

~o,;

....,;_++-------

. . 4 2

Cf)

(_)

0

·

rl:

tfJ "U

G,

,._

3

4

----~-+--<..,,>

.

123

'-"

,._

:

========::==:=~

:;

~::::>==:==:==::=============:===

:1

SCI} ¼

··

6

<l

7

--------(

I

~

0~

CTl.

~

i!t

'

ff)

~l

~c~---_..,+--------t---

2J

{TENS)

t

~

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L

eco

i

..

!""n..

*

._

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4

5

6

-~ .

~

-----a...-.(...,~

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12.

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J.O

TOTAL

MUTE

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-4V

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600.D. I

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----..-ci

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-•.·,

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.~ ;

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....

7 •

_:_-,.c

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OUTPUT

SHIELD

BUS

CHASSIS

+18d8m

600.0.

OUT PUT

GNO

M--

INOiCATES

OPTIONAL

WIRING.

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www.SteamPoweredRadio.Com

CS9100

Instructions

Figure

7-1

7-2

7-3

SYSTEM

DRAWINGS

Title

Audio

Functional

and

Frame Layout

Power

Supply

Distribution

and

DC

Control

Typical

Rear Panel

Connector

Wiring

Layout

Index

Number

D9100/1-1

D9100/2-1

A9100/8-1

Page 2

www.SteamPoweredRadio.Com

CS91OO

Instructions

SUB

ASSEMBLY

INSTRUCTIONS

(

~

Af:_2

_

7-6

_

~-

-~

-

AM478T

RT613

PS852

CS9OOO-5

Preamp]

ifier

Output

Amplifier

Relay Timer

Power Supply

Voltage

Regulator

Page 3

of

13

www.SteamPoweredRadio.Com

cs9100

Instructions

Section

1

GENERAL

DESCRIPTION

Section

1

1.01

to

1.12

1.01 The CS9100 is a

complete

10

input,

10

output

(10 x 10)

intercom

system

with

the

reliability

and

flexibility

to

fill

the

majority

of

requirements

for

professional

use.

1.02

All

switching

is

done

by

sol

id

state

crosspoints

with

balanced

inputs

and

outputs.

1.03

The

intercom

system

includes

ten

input

amplifier

and

matrix

modules,

five

dual

output

amplifiers,

and a power

supply

mo~nted in a

single

19

inch

equipment

frame.

1.04

All

inputs,

outputs

and

controls

are

connected

to

the

intercom

system

via

50-pin

subminiature

'D'

connectors

mounted

on

the

rear

of

the

equipment

frame.

1.

05

Key

panels,

microphones

and

speakers

can be

supplied,

as

extra-cost

options

,

by

Mccurdy Radio

Industries

to

complete

the

system

.

Prea

m

plifier

1.06

The preamp]

if

i

er

and a 1 x

10

switching

matrix

are

mounted

on

a

common

printed

circuit

board.

See AP176, AP276, AP376,

AP476

manual

for

a

detailed

description.

1

.07

The preamp]

ifier

incorporates

an

AGC

amplifier,

which

may

be

switched

in

or

out

by

m

eans

of

a

plug-in

jumper

on

the

PC

board.

1

.08

Three

inputs,

carbon

microphone,

dynamic microphone and

line,

are

provided

.

These

can be

se

l

ected

by

means

of

a

rotary

switch

mounted

directly

on

the

PC

board.

1

.09

The preamp]

ifier

output

is

routed

to

the

edge

connector

before

being

fed

to

the

matri

x

section

to

allow

for

the

insertion

of

auxiliary

equipment

(jackfields

,

etc.)

.

Switching

Matrix

1.10

The

switching

matrix

determines

the

audio

routing

from

the

l

nput

to

the

desired

output,

as

shown

on

the

Audio

Functional

Diagram,

Figure

7-2

.

1.

11

Each

printed

circuit

board

contains

a 1 x

10

(one

input

to

ten

output)

switching

mat r

ix

along

with

the

input

and

AGC

amp

l

ifiers.

1.

12

At

each

crosspoint

of

the

matrix,

w

here

communication

is

desired,

a

sol

id-

state

integrated

c i

rcuit

switch

is

installed

. The

switch

is

activated

by

the

application

of

a

-4V

DC

control

voltage,

via

a key

panel,

to

the

proper

control

(or

pins)

.

Page 4

www.SteamPoweredRadio.Com

CS9100

Instructions

Section

1.13

to

1.22

1.

13

The

crosspoints

may

be

controlled

by

one

of

two

methods:

1.

14

(a)

Discrete

control,

where

the

control

voltage

is

applie

d

to

one

which

activates

the

desired

cross

p

oint,

ten

wir

es

for

ten

crosspoints.

(b)

BCD

(Binary

Coded Decimal)

contro

l,

where

the

control

voltage

is

applied,

in

BCD

code,

to

the

control

pins.

A

BCD

to

decimal

decoder,

on

the

circuit

board,

then

activates

the

desired

crosspoint.

Four ·

control

wires

can

control

up

to

ten

crosspoints.

Isolation

in

the

switching

mat

rix

is

maintained

by

resistors

and a

virtual

ground summing

amplifier.

which

are

on

when

the

crosspoint

is

not

aciivated,

on

the

isolation

resistors.

means

of

the

isolating

The

FET

switches,

maintain

back-loading

Output

Amplifiers

1.15

Several

output

amplifier

configurations

are

available.

Some

types

having

a O

dBm

and +

18

dBm

line

output

only,

and

others

having

a

3W,

8

ohm

output

in

addition

to

the

line

output.

In

addition,

some

types

have

output

transformers,

providing

isolated

8

ohm

and 150

or

600

ohm

outputs

,

while

other

types

do

not.

See

AM178,

AM278, AM378,

AM378T,

AM379,

AM478,

AM478T,

AM479

manual

for

a

detailed

description.

1.

16

All

output

amplifiers

incorporate

a summing

amplifier

input

and O

dBm

and

+18

dBm

outputs

whose

levels

are

independent

of

the

front

panel

gain

control

sett

ing.

1.

17

All

output

amplifiers

with

a

three

watt

output

stage

incorporate

a

sol

id-

state

FET

switching

circuit

for

muting.

By

grounding

the

proper

control

(or

connecting

to

-4V

DC)

the

output

may

be

totally

muted

or

reduced

in

level

by

15

dB

(adjustable

O

dB

to

approximately

30

dB).

1.

18

The

three

watt

output

stage,

on

amplifiers

so

equipped,

is

fully

protected

against

overloads

or

short

circuits.

Power Supply

1.19

One

PS852

or

PS852A

power

supply

provides

±15

volts

DC

at

2A

, which

is

sufficient

to

operate

all

amplifiers

and

switching

circuits

in

the

intercom.

1.20

In

order

to

reduce

the

turn-on

current

surge,

power

is

fed

to

output

amplifiers

AM7

through

AM

lO

via

a

delay

circuit.

This

circuit

delays

the

application

of

power

to

these

output

amplifiers

for

a few

seconds,

giving

the

rest

of

the

intercom

system

time

to

stabilize.

1.21 Where

the

PS852

is

used ,

the

RT613

delay

circuit

is

used.

The

PS852A

has

this

circuit

built-in.

1.22

The

±15

volt

DC

supply

is

reduced

to

±4

volts

DC

by

a CS9000-4

sub-

regulator

.

This

voltage

is

used

to

operate

the

switching

and

control

circuits.

Page 5

www.SteamPoweredRadio.Com

CS9100

Instructions

Section

1

1.23

to

1.

32

Options

1.23

External

Circuit

Drivers

The

external

circuit

drivers,

when

wired,

provide

an

electronic

switch,

for

the

control

of

lamps

or

relays,

which

closes

to

ground

when

the

cross-

point

is

activated.

One

electronic

switch,

consisting

of

an open

collector

transistor

shunted

by

a

diode,

is

provided

per

crosspoint.

See

AP176

-

AP476

,

XP177

-

XP477

instructions

for

full

specifications.

1

.24

BCD

(Binary

Coded Decimal)

Crosspoint

Control

As

previously

described

in

section

1.13

(b),

the

BCD

control

system

al

lo

ws

ten

crosspoints

to

be

control]ed

with

only

four

control

leads.

See

AP176

-AP476,

XP177

-

XP477

instructions

for

a more

detailed

description.

Also,

see

Figure

1-1

for

line

encoding

information.

1

.25

Output

Muting

The

output

m

uting

circuit,

when

w

ired,

provides

for

remote muting

of

the

three

w

att

o

utput

as

described

in

paragraph

1.

17.

For

details

on

adjustment

of

the

partial

muting,

see

AM178, AM278,

AM378,

AM378T,

AM379,

AM478,

AM

478T,

AM479

manual.

Optional

Equipm

ent

1

.26

CP7101

or

CP7102

Control

Panel

Each

panel

contains

five

lever

keys and

is

designed

for

flush

mounting

in a

desk

t op. The keys

are

three

position

(centre

off)

and

may

be

locking

(LJ,

non-locking

(NL),

or

L-NL.

1.

27

CS9000-2

Control

Pa

n

el

This

panel

contains

up

to

ten

lever

keys and

is

designed

for

flush

mounting

in a

desk

t op. The keys

are

three

position

(centre

off)

and

may

be

locking

(L),

non-locking

(NL)

or

L-NL:

It

is

designed

to

be used

with

BCD

control

and

con{ains

a

circuit

board

for

mounting

the

encoding

diodes.

1.

28

SA601

Speaker

The

SA601

is

an 8

ohm

enclosed

speaker;

with

volume

control,

designed

for

placement

on

a

desk.

Mechanical

Details

1.29

The

interco

m

system

is

com

pletely

contained

in a

single

5¾

inch

high,

equipment

frame.

This

frame mounts in a

standard

19

inch

equipment

rack

.

1

.30

Al

1

connections,

both

audio

and

control,

are

made

by

cables

to

standard

50

subminiature

1

0

1

connectors

on

the

rear

of

the

intercom

frame.

No

direct

solder

connections

are

required.

1.31 The

input

am

plifier

and

matri

x modul es and

output

amplifiers

are

built

on

glass-

e

po

xy

printed

circuit

cards

attached

to

metal

guide

plates.

Circuit

connections

are

made

by

a

72

card

edge

connector.

1.32 The

po

we

r s

up

p

ly

is

contai

ned in an

enclosed,

ventilated,

chassis

which

is

mounted in

the

intercom

frame

as

a

plug-in

unit.

Circuit

connections

are

ma

de

by

a

24

''blue

ribbon"

connector.

Pa

ge 6

www.SteamPoweredRadio.Com

CS9100

Instructions

Section

1

1.31

to

1.33

1

.32

The

±4

volt

sub-regulator

is

built

on

a

glass-epoxy

printed

circuit

card

which

plugs

into

a

15

edge

connector

located

behind

the

frame

rear

panel.

The

circuit

card

is

retained

in

the

connector

by

a

sponge

rubber

pad

on

the

inside

surface

of

the

hinged

rear

panel.

1.33 The

relay

timer

is

built

on

a

glass-epoxy

printed

circuit

card

mounted

to

the

rear

of

the

frame,

beh ind

the

rear

panel,

with

brackets

and a

mounting

plate.

BCD

Control

Lines

8

Matrix

Board

Pins

,

Units

31

Matri x

Boa

rd

Pins,

Tens

32

Cable

Connector,

Units

20

Cable Connecto

r,

Tens

24

Table

1:

Connections

BCD

Control

8 4

0 0 0

1 0 0

2 0 0

3 0 0

Decim

al

Number

4 0 1

5 0 1

6 0 1

7 0 1

8 1 0

9 1 0

Table

2 :

Truth

Tabl e

4

33

34

21

25

Lines

2 1

0 0

0 1

1 0

1 1

0 0

0 1

1 0

1 1

0 0

0 1

2

35

36

22

26

1

37

38

23

27

0

Indicates

the

control

I

ine

pulled

do

w

n.

Connected

to

-4V

control.

Indicates

control

1

ine

pulled

up. Not

connected

to

-4V

control

.

Figur

e

1-1:

BCD

C

ont

rol

\./iring

Page 7

www.SteamPoweredRadio.Com

CS9100

Instructions

Section

2.

SPECIFICATIONS

Section

2

2.01

to2.11

2.01

Input

levels

and

source

impedances w

ith

AGC

section

bypassed:

(a)

AP176

-

AP476

input

amplifiers

l.

Dynamic Microphone:

-60

dBm,

150

ohms

nominal

2.

Carbon Microphone:

-25

dBm,

50

ohms

nominal

3.

Line:

0

dBm,

600 ohms.

(b)

OL76

input

amplifier

1. Dynamic

Microphone:

-60

dBm,

150

ohms

nominal

2.

Li

ne One:

-10

dBm,

600

ohms

3.

Line

Two:

+8

dBm,

600 ohms.

2.02

Maximum

output

levels

and

load

impedances

(Output

Amplifier):

(a) +18

dBm

and O

dBm,

600

ohms

(b) 3

watts,

8

ohms

(c) 3

watt

s (+35

dBm)

600 ohms,

strappable

to

150

ohms

with

two

splits

on

AM478T,

w

liich

has

output

transformers.

2.

03

Input

levels

w

ith

A

GC

section

inserted,

dynamic

microphone

input,

nominal:

(a)

-70

dBm

to

-60

dBm,

Li~ear

gain

\b)

-60

dBm

to

-40

dB

m, 2

dB

c

ha

nge

at

output.

2.04

Frequenc

y

Response:

±2

dB

, 1

00

Hz

to

10

kHz.

2.05

Distortion

(a)

AM

478

1%

maximum, 100

Hz

to

10

kHz,

at

rated

output

level

(b)

AM478T

1% maximum, 150

Hz

to

10

kHz,

at

rated

output

1

eve

l.

2.06

Equivalent

input

noise

(dynamic

microphone):

Better

than

-115

dBm.

2.07

Crosstal

k:

Better

than

55

dB

below +18

dBm,

100

Hz

to

10

kHz,

at

test

level.

2.

08

E

xt

ernal

circuit

drivers:

Maximum

vo l

tage

:

40

volts

Max

imum

current:

75

mA.

2.09

Power

Requirement

:

117

volts

AC,

50/60

Hz

(230

volts

supplied

on

request),

approx.

105

VA.

2.

10

Weight:

Approximately

40

lb.

2.11

Dimensions:

19

11

w

x Sl''H x 1

6~

11

D.

P

age

8

www.SteamPoweredRadio.Com

CS9100

Instructions

Section

3

INSTALLATION

Mounting

Section

3

3.01

to

3.

07

3.01 The

intercom

is

designed

to

be mounted in a

standard

19

inch

equipment

rack,

taking

5¼

inches

of

panel

space.

3.02

Normally,

the

intercom

is

shipped

with

all

modules in

place

and

held

by

means

of

shipping

bars.

These

bars

may

be removed

after

installation

is

completed.

If

unusual

shipping

conditions

necessitate

removing and

packing

modules

separately,

install

the

modules in

the

correct

slots

by

referring

to

the

designations

on

the

module

guide

plates

and

matching

these

with

the

numbers on

the

frame

layout

diagram,

Figure

7-1.

Wiring

Connections

3

.03

All

wiring

is

d

one

to

50

subminiature

1

D

1

con

nectors

mounted

on

the

intercom

rear

panel.

See

Figure

7-3

. Each

of

the

ten

connectors

contains

all

the

audio

and

control

co

nnections

for

a

particular

station.

See

Figure

7-3

for

the

connections

necessary

in

fabricating

the

cables.

3.04

Wiring

should

be

segregated

according

to

level

and

function;

i.e.

aud io

inputs

(microphone

or

1

ine),

audio

outputs

(speaker

or

1

ine)

and

DC

control.

DO

NOT

lace

together

pairs

of

more

than

30

dB

difference

in

level.

3.05

In

order

to

prevent

degradation

of

the

crosstalk,

adjacent

input

amp!

ifiers

should

not

be

assigned

so

as

to

have

input

levels

differing

by

more

than

45

dB.

In

other

wor

ds,

an

input

amplifier

set

for

1

ine

input

(0

dBm)

should

not

be

one

set

for

dynamic

microphone

input

(-60

dBm).

3.06

Audio

input

wiring

should

consist

of

shielded

twisted

pairs

such

as

Mccurdy SA12002 (22

gauge,

stranded),

while

the

output

wiring,

for

3

watt

outputs

,

should

be Belden 8790 (18

gauge,

stranded).

Ground

the

shields

only

at

the

common

-s

ystem ground

pins

on

the

cable

connector.

3.07

Control

Panel

The

standard

control

panel

for

the

intercom

is

a Mccurdy CP7102

using

five

3-position

lever

keys

with

2C

contacts.

A

wiring

diagram

is

supplied

with

the

panel.

Please

read

the

notes

on

the

diagram

which

refer

to

various

wiring

configurations

pertaining

to

the

types

of

keys

installed.

Where

extra

contacts

are

required

for

external

muting,

order

the

optional

CP7101

key panel

with

3-position

4C

keys.

When

the

optional

BCD

cross-

point

control

is

utilized,

the

CS9000-2 key

panel

must be

used.

This

panel

is

supplied

with

up

to

ten

3-pos

it

ion 1

ever

keys.

Refer

to

the

notes

on

the

diagram

supplied

with

this

panel

for

the

proper

wiring

connections.

Page 9

McCURDY CS9100 User manual

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