McCURDY DA504 User manual

www.SteamPoweredRadio.Com

If You Didn't Get This From My Site, Then It Was Stolen From

Se

cti

on.

2

3

4

INSTRUCTIONS

OA504

AUDIO

DISTRIBUTION

SYSTEM

I

NDEX.

Subje

ct.

-G

e

neral

Description

Specifications

In

s ta 11

at

ion

Mainten

ance

McCURDY RADIO INDUSTRIES LIMITED

Issue

1

July

1976

Pa

ge

1

of

9,

Page.

3

5

6

9 )

108 CARNFORTH ROA , TORONTO, ONTARIO M4A 2L4 (416) 751-6262, TELEX 06-9635:

McCURDY RADIO INDUSTRIES INCORPORATED

1051

CLINTON STREET. BUFFALO. N.Y. 14206 (716) 854-6700 ·

McCurdy

Rad

io

Indus

tries

reser

ves

the

right

,

witho

ut

not

ice

to

make

such

c

hang

es

in

equipment,

desig

n,

specificat

ions,

or

component

'.

as p

rog

ress in

engineering

or

manu

fact

un g tn

ch

niques

may

warrant

to

impro

ve the

performance

of

the

product.

www.SteamPoweredRadio.Com

Figur

e.

1

-1

3-1

3

-2

3-3

AT31O

RG311

RG312

PS855

Instru

ctions

.

LI

ST

OF

ILLUSTRATION

S.

Tit

le

.

Page.

Block

Diagra

m 4

Frame La

yout

7

Frame Wi

ring

8

AT31O

Con

n

ecto

r Wi

ring

8

SUB

ASS

EM

BLY

INSTRUCTIONS.

Au

dio

Distributio

n

Amplifier

Remote Gain

Di

stribution

A

mplifier,

Opt i

onal

Remo

te

Gain Dis

trib

ut

ion

Amplifie

r,

Optional

Power

Supply

Index.

Page 2.

www.SteamPoweredRadio.Com

..,.

·l

DA

5

04

In

s

truc

t i

ons.

Sec

tion

1.

GE

NE

RAL

DES

CRI

PTI

ON

.

Section

1

1.01

to

1.06

1.

01

The

DA5

04

Au

di

o D

istri

bu

ti

on Sy

st

em

is

desi

gned

for

audio

distribution

in

br

oa

dcas

t i ng

or

ot

h

er

commerc

ial

a

pplicati

ons w

here

pr

o

fessional

qua

lit

y must be

mainta

i

ned.

The

DA504

con

sis

t s

of

an FR906

i9-inch

equipme

nt

Frame h

olding

up

to

s ix

AT31

0 Dist

ri

bu

ti

on

Amplif

i

ers

and one

PS

855 Power S

up

p

ly.

1. 02 Each

AT3

10

br

i

dges

one i

np

ut

at

a

ny

spe

cifi

ed le

vel

from -12dBm

to

+20d8m

a

nd

prov i

des

up

to

22

iso

la

ted

out

pu

t s

at

+8dB

m,

600 ohms ,

balanced.

T

we

lv

e

of

t h

ese

ou t

puts

are

prov

ided wi t

hin

th

e

am

p]

ifiers

and

provision

is mad e f

or

t he a

ddi

t ion

of

up

to

te

n

externa

l

outputs.

Thu s , a

complete

c

om

ple

me

nt

of

s ix

am

p]

ifie

rs

can

p

ro

vide 132 o

utp

ut s from

six

inputs

,

72

int

erna l and

60

exte

rn

al

. See

AT

310

instru

c t ion s

for

further

informati

o

n.

1

.03

A pre se t

gai

n

cont

ro l is p

ro

vi

ded on

the

fron

t pane l

of

each

AT

310

di

s

tributi

on a

mpl

ifier.

Th

is

cont

ro l w

ill

va

ry

th

e g

ain

from

O

up

to

the

max

im

um

av

ai

l

able

.

1. 04 Each

AT31

0 is

also

equippe

d

wit

h a

sum

ming

input,

a

llowin

g

it

to be

use

d

with

sw

itc

h

ers,

or

ot

h

er

syste

ms, hav

ing

th

e

insolati

on ne tw

orks

built

in.

1

.05

An

RG311

or

RG3

12

remote

gain

distr

ibution

amp

li

f

ier

is

av

ai

la

b

le

in

pl

ace

of

the

AT

3

10

.

These

amp] i f i

ers

provid

e f

or

remote

DC

control

of

amplifi

e r

gain.

The rem

ote

gai

n

sec

t i

ons

of t h

ese

amp] i f

ie

rs a re

also

ava i l abl e

se

pa r

ate

ly , a l

lowing

fi

el

d

conver

sion

of

AT310

a

mplif

ie

rs

to

rem

ot

e ga in

at

any

time.

See AT3

10

in

s

tructi

ons f

or

furthe

r

information.

1.

06

The

FR90

6 equi pm

~nt

Frame

mo

u

nts

in a

sta

ndar

d 19

inch

r

ack

or

pedesta

l

and

occupies

onl y 5.

25

i

nches

of

vertic

a l spac

e.

Page 3

www.SteamPoweredRadio.Com

-0

Qi

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(1)

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FEEDBA

CK

GA

IN

i,5

,

19

REMO

TE

GAI

N

j B,

16

,18

1----

1

-·------

--

I

INPU T

~

I

~

SUMMI

NG~

I

INPUT ' I

I

AT

310

AMP

LI

FIER

Al -

41

6

50

/60

I ,3,14

115V

D

H, (

..,...

__

_

RE

MO

TE

GAIN

AM

PU

Fl

ER

~

- - -

--

(OPTIONAU

RE

G

UL

ATOR

C

+

PS655

POWER

SUP

P

LY

GAIN

-1

I

6

1,62

::J

~}EX

TE

RNAL

SPLITS

.JVVVL.-

(IOMAX)

63,64

>----21,23

>----21

,29

>----3

3,

35

>----,9,41

>-

--

45,47

>----5

1

,53

>----24,26

>----

30

,32

~

I

>---

36 ,38

~

/

>----

4

2M

/>----4

8,50

I

>----54

,

56

IN

TER

NAL

SPLITS

/

>----

57,59

DIRECT OUT

PUT

I

Figure

1-1.

B

lock

Diagram

0

)>

V,

0

..c--

:::i

V,

rt

•

C

n

rt

0

:::i

V,

-.,

Ul

-·

(l)

(0

n

C

rt

, -·

(l)

0

:::i

~

I

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www.SteamPoweredRadio.Com

D

A504

In

str

uction

s .

Se

ctio

n 2. SPECIFICATIONS.

2.01

Frequency

Response:

±0

..

25dB

, 20Hz

to

2CkHz

(Reference

1 kHz).

2.02

Input

Leve

l:

-12d8m

to

+20d8m ,

max

i

mum.

2.03

Gain:

Section

2

2.01

to

2.15

Var

iab

le

from

Oto

20dB

by

means

of

preset

cont

rol.

Maximum

gain

of

4

0dB

with

820

ohm

f

eedback

resi

st

or

.

2.0

4

Output

Splits:

Ma

ximum

22 pe r

am

pl

if

ie r . Twelve

provid

ed ,

up

to

10

e

xternal

possible.

2.05 Outpu t

Le

ve l :

+8dBm,

+25

d8

m maximum.

2.06

Source

Impedance:

600

ohms

balanced

.

2.07

Inpu t

lm

pde

ance:

20k

ohms

or

summ

ing,

balanced.

2

.08

Output

Impedance:

600 ohms ,

bala

nced .

2.09

Load

Im

pedance:

600 o

hm

s , bal

anced,

minimum.

2.

10

No

ise:

90d 8 below

+18dBm

ou'tput,

from

10Hz

to

lOOkH

z,

depending

on

gain

setting.

2.

11

Dis

tortion:

L

ess

than

0.2

%,

20H

z

to

20kHz

at

+18d8m out .

L

ess

than

0.25

%,

20Hz

to

20k

Hz

at

+25dBm

out.

2

.12

O

utput

Spli

t

iso

latio

n:

Better

th

an

70d B, 2

0H

z

to

20kHz (80d8

typical

mid-band).

2.

13

P

ow

e r Requ

ir

eme

nt:

115V

, 50/60H

z,

approx

i

mate

ly

12

0VA

(230V

avai

l

able).

2.

14

Di

me

nsi

ons

:

5

.2

5 in.

(13.34

c

m)

Hi

gh,

13 i

n.

(3

3

cm

)Deep,

19

in.

(48.26

cm)

Wide.

2.

15

We

ight:

A

pproximately

30 pound

s,

(13

.6

kG

).

Page

5.

www.SteamPoweredRadio.Com

DA504

Instruction

s .

Section

3

3.01

to

3.07

Section

3

INSTALLATION.

J.02

3.03

3.0

4

3. 05

3.06

3.07

On

rece

i

pt

of

the

equi

pm

ent,

examine

each

un

i t

for

any

damage

that

may

have

occurred

in t ra

nsit.

If

crny damage

is

found,

report

it

in

accordanc~

with

the

enclos

ed Damage

Claim

Pr

oce

dure

Form.

Under so

me

shipping

cond

itions,

the

power

supply

and

amp]

ifier

modules

will

be removed from

the

frame

and

packed

separately.

Install

these

after

al

I

othe

r

insta

ll

at

io

n is

complete.

Mounting

. .

The

DA504

occupies

5-1/4"

of

ve

rti

c

al

space

in a s t

andard

19"

rack.

The

unit

generates

ve

ry

li

t

tle

heat

and

so

the

frame

may

be

stacked

as

required.

However, a

void

pro

x

im

i

ty

to

equipment

that

generates

considerable

heat

. F

urther,

the

DA504

should

be

mo

unted

at

least

3½"

above

or

below

power su

pplies

or

transformers

in

o

rder

to

avoid

hum

pick-u

p.

Installation

Co

nnecti

ons .

Ref

er

to

fi

g

ur

es

3-

2 and 3

-3

for

terminal

numbers.

Audio

Wiring.

Audio

runs

should

co

ns is t o f

shielded,

twiste

d

pairs

such

as

MRI

SA12002.

Keep

input

and

output

a

udio

runs

we!

1

separated

from

each

other

and

from

ac

power w1r1 n

g.

Audi o

wiring

should

be

dressed

neat

l~ and

arranged

in

harnesses

by

func

t

io

n a

nd

lev

e l

(inp

ut

wiring,

output

wiring

etc.).

Do

not

lace

together

pa i

rs

of

more

than

28dB

differ

e

nce

in

level.

In

pu

t

Wiring

.

Input

wi

ri

ng

should

e

nt

e r a t

the

top

right

of

the

frame

as

viewed

from

th

e

rear.

In p

ut

wi

re s a re

to

be

soldered

directly

to

the

AT310

connector

terminal

s

loc

a ted on the re

ar

panel

.

Wire

the

shield

to

5-

NOTES.

(1) To

m~int

ain

proper

phasing

between

inp

uts

and

outputs

where

this

is

important,

phasing

is

shown on

Figure

3-3.

(2)

Shields

s

hould

be

grounded

at

the

designated

terminals

on

the

DA504,

provided

they

are

not

grounded

at

the

far

end.

Do

not

g

round

shields

at

both

ends

of

a

run.

Output

Wiring.

Outputs

are

wired

dir

e

ct

ly

to

the

te

r

minals

on

the

AT310

connector

as

shown i n

figures

3-2 a

nd

3-3 .

Cables

should

exit

from

the

bottom

right

of

the

frame

as

viewed

f

rom

the

rear.

The

output

shields

should

be

wired

to

the

comm

on

bus

runnin

g

through

pi

ns

67

and

68

of

the

connector.

A

ltern

at

e

ly,

the ou

tp

ut s

hield

s

ca

n be

wired

to

the

ter

minals

designated

with

an

asteri

sk on Fig

ur

e

3-3.

If

this

is

done,

these

terminals

must

be

connect

ed

to

the

com

mon

bus.

Unused

outputs

should

be

left

unterminated

.

Page

6.

www.SteamPoweredRadio.Com

:,,

.,

"

DA50

4 I

nstructions

Section

3

3.08

to

3-

13

3.

08

If a

ddi

t i

onal,

external,

output

sp

lit

s

are

req

uir

e

d,

the

se

are

wired

to

pins

57 and 59 on

amplifier

con

n

ec

to

r.

The

11

pos

i t

ive

11

ph

ase

should

be

connect

ed

to

p

in

57

and t he

11

negative

11

phase

to

·

59.

Th

e

resistors

used

f

or

th

e

ex

te

rnal

splits

should

be 300 oh

m,

1W,

±5

%

car

bon

film

types.

3.09

Gr

o

undin

g.

Run

a N

o.

16

stranded,

in

su

lat

ed w

ire

f r

om

the

grou

nd

(common)

bus

on

3.

10

3.

11

3.

12

3.

1

3

the

termina

l

strip

to

s

yst

em g

round

(Fig

u

re

3-2).

Ac

Power .

(a)

The

DA504

ac

power

cord

plug

s

in

to a 115 vo

lt,

50/60Hz

ac

sourc

e.

Keep

this

c

ord

separated

f

rom

th

e

audio

l

eads

.

(b)

Th

e

DA

504

may

be

ope

r

ated

from a 230

volt

50/60Hz

ac

sour

ce

if

th

e power

transfo

rm

er

st

rapping

is

charged

. See PS855 power

s

up

ply i

nstruct

i

ons

.

If

the

abov

e wi

ring

reco

mmendations

ar

e

fol

lowed

the

system

should

mee t

al

1

th

e

performa

n

ce

speci

ficat

ion

s

of

Section

2.

lnst

a l

ling

Modu

l

es

in

Fram

e.

lnstal

1

the

amp

l

if

i

ers

and power

su

pp

ly

into

the

DA504

frame

in

a

cco

r

dance

with

th

e l

ayo

ut

of

Figure

3- 1.

Be

carefu

l

not

to

dam

age

the

PC

boards

or

connectors.

Final

Level

Adj

ustment.

After

in

stallation,

refer

to

the

AT3

10

instructions

and

set

up

the

gains

of

the

amp

lifi

ers

as

directed.

te------

--------

---

19

"

-------

-

----

----------

r 0

5 1/4"

L0 * *

AT3

1O

AT

31O

A l

A2

A

UDIO

DISTRIBUTION

SYSTEM

* * * *

AT3

1O

AT31O AT31O

AT31O

A3

A4

A5

A6

DA5O4

FRAME FRONT

VIEW

*

UP

TO

SIX

AMPLIFIERS INSTALLED AS PER

CUSTOMER

REQ

U

EST.

Fig

ur

e 3-

1.

Frame

Layout

0 0

0

FUSE®

$0FF~ON

0 0

PSB55

~

Page

7-

www.SteamPoweredRadio.Com

..

DA5

04

Instru

c t i

ons

------

j

,

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SPLIT

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SPLIT 8

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SPLIT 9

SPLIT 10

SP

LIT II

SP

LIT

12 •

C

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Section

3

Fi

gures 3-2 & 3-3

INPUT

EXT. FEE08ACK

GAIN

-=

~]

DI

RECT

OOTPUT

+25V

COMMON

VIEWED FROM

WIRI

NG SIDE , REA R

OF

CONNECTOR

Figu

re

3-3.

AT310

Connector

Wi

ring

JU

M

P[R

A(l.tOV[O

If

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15

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ring

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Page 8

www.SteamPoweredRadio.Com

DA504

In

struction

s ·

Section

4

MAINT

E

NANC

E.

S

ec

ti

on

4

4.

01

t o 4

.0

2

Ta

ble 4

.01.

4.01

The

DA5

04 shoul d be

inspected

dur ing

reg

ul

ar

ma i

nte

n

ance

periods

.

Remove

accumulated

dus t

by

means

of

a s

oft

non-meta

l

1

ic

b

rush

or

a

vacuum

clea

n

er.

WARN

I

NG.

A

LW

AY

S

SHUT

OF

F

THE

AC

POWER

WHEN

WORK

I

NG

ON

THE

EQU

I

PMEN

T.

DO

NO

T

REMOVE

OR

RE

PLA

CE

MODULES

WHEN

POWER

IS

APPLIED

TO

THE

EQUIPMENT.

4

.02

The a

mplifi

e r and power suppl y

modu

l

es

may

be removed and ben

ch-

t

es

ted

separ

ate

ly

if a

faul

t is sus

pected.

Refer

to

t

he

se

p

arate

instructi

ons

for

th

ese

un

it

s.

Table

4.01.

Parts

List.

Re

fe

r

ence

Designation

Suppli

e r and

Pa

rt

No.

Desc

ripti

on

.

----4------+--

---l

A1

to

A6

PS

I

J

1

to

J6

J7

McCurdy

AT310

McCurd

y PS855

ED

AC

345-0

7

2-500-808

Ampheno

l

26-

1

90-

16

C

ords

of

Ca

nada

3/18

Di

st

ribution

Ampli

fi

e r

Powe

r S

up

ply

Con

ne

ctor

:rece

pt

ac

le

;

-:,-~

fe

ma

le co

ntr

act

s.

Conne

ctor:

rece

ptacl

e;

16

f

em

ale

con

tac

ts.

Cab le &

Plug

As

se

mb

ly

ac

po

w

er.

Page

9-

www.SteamPoweredRadio.Com

Section

2

3

4

5

6

INSTRUCTIONS

AT310

DISTRIBUTION

AMPLIFIER

INDEX

Subject

General

Description

Specifications

Installation

Circuit

Description

Maintenance

Parts

List

LIST

OF

ILLUSTRATIONS

&

DRAWINGS

Number

Figure

3-1

Figure

3-2

Dwg.

B-310/2-3

Dwg.

D-310/2-1

Dwg.

C-310/8-1

Dwg.

c310-30/8-1

Dwg.

B-310/1-2

Title

Connector

Wiring

Feedback

Resistor/Gain

Table

Block Diagram

Schematic

Diagram,

AT310

& AT310-30

Component

Layout,

AT310

Component

Layout,

AT310-30

Test

Setup

McCURDY RADIO INDUSTRIES LIMITED

108 CARNFORTH ROAD, TORONTO,

ONTARIO

M4A 2L4

(416)

751-6262, TELEX 06-963533, TWX 610-492-1373

McCURDY RADIO INDUSTRIES INC.

1711

CARMEN DRIVE, ELK GROVE VILLAGE, ILLINOIS 60007,

(312)

640-7077, TWX 910-222-0436

Issue

4

September,

1980

Page 1

of

17

Page

2

3

4

7

10

15

Page

6

8

9

12

13

14

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.

McCURDY DA504 User manual

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