NEC TTS 58AXPJ User manual

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NORTHEAST

ELECTRONICS

CORPORATION

P.O.

BOX

649-

CONCORD,

N.H.

03301

{603)

224-7466

. ..

J

•

INSTRUCTION

MANUAL

/ /

LONG

Lr·

I:J""\D

.

L....

Lc

~~

IPMENT

TESTING

ANNEXE

t

(I

L.

MoDEl

tts~a~~;t

~

0

ST_,

'~-

-

and

MODEl

58BXPJ

PHASE

JITTER

MEASURING

SETS

ISSUE

1

NORTHEAST ELECTRONICS

CORPORATION

P.O.

BOX

649-

CONCORD,

N.H.

03301

PRINTED

IN

USA APR

1970

PROPRIETARY NOTICE

The

information

contained

in

this

publication

is

the

property

of

Northeast

Electronics

Corporation

and

may

not

be

reproduced

or

used

for

manufacturing

purposes

or

disclosed

to

third

parties

without

the

written

permission

of

Northeast

Electronics

Corpor

-

ation.

WARRANTY

NEG

warrants

all

products

manufactured

or

sold

by

NEG

to

be

free

from

defects

in

materials

and

workmanship

,

subject

to

the

following

terms

and

provisions.

NEG's

obligations

under

this

warranty

are

limited

to

repair-

·

ing,

adjusting,

or

replacing

at

our

option,

with

reasonable

prompt-

ness,

any

NEG

product

which

shall

with

in

twelve

(12)

months

after

delivery

to

the

original

purchaser,

and

after

normal

and

proper

us-

age,

prove

to

be

defective

on

NEG

inspection,

provided

that

the

purchaser

shall

hav

e

reasonably

inspected

products

when

received

and

notified

NEG

of

any

apparent

defects

discovered

within

fifteen

(15)

days

of

receipt

of

shipment.

NEG

shall

not

be

liable

for

any

manufacturing

costs

of

the

buyer,

lost

profits

or

good

will

of

the

buyer'

or

any

other

special

or

consequential

damages

susta

ined

or

expenses

incurred

by

the

buye;r

by

reason

of

the

use

or

sale

of

any

defective

NEG

product.

No

products

may

be

returned

to

NEG

except

with

our

written

permission.

After

receiving

NEG

factory

authorization,

material

requiring

repair

or

replacement

should

be

sent

prepaid

to

the

fac-

tory

accompanied

by

a

written

statement

setting

forth

as

complete-

ly

as

possible

the

defects

and

the

conditions

under

which

they

occur-

re

d.

Material

de

liv

ered

by

NEG

sha

ll

not

be

considered

defective

if

it

satisfactorily

fulfills

the

buyer's

performance

requirements

and/or

is

in

accordanc

e

wi~h

·

ap'proved

samples.

NEG's

obligations

on

perfor~ance

of

product:>.

delivered

shall

be

limited

to

comply-

ing

with

specifications

accompanying

a

purchase

order

or

wl.th

pub-

lished

specifications

on

standard

catalog

items.

This

warranty

does

not

extend

to

any

NEG

products

which

have

been

subject

to

misuse,

neglect,

accidents

or

improper

installation

or

applications,

nor

shall

it

extend

to

units

·

which

have

been

repaired

or

substantially

altere

_d

outside

the

NEG

factory,

nor

to

any

associated

instruments,

equipments

or

apparatus.

This

warranty

is

in

lieu

of

all

other

war-

ranties,

express

or

implied.

r

I\

I'

~

I

L

L

L

ll

tI

Section

1

2

3

4

5

6

7

TTS

58AXPJ

Model

58BXPJ

TABLE

OF

CONTENTS

Title

GENERAL

DESCRIPTION

SPECIFICATIONS

OPERATING

INSTRUCTIONS

CIRCUIT

DESCRIPTION

MAINTENANCE

AND

CALIBRATI

ON

ELECTRONIC

PARTS

LIST

SCHEMA

TIC

DIAGRAMS

Page

1-1

2-1

3-1

4-1

5-1

6-1

7-1

..

,

{'

I'

ll

t1

u

TTS

58AXPJ

Model

58BXPJ

Section

1

SECTION

1

DESCRIPTION

1.

1

GENERAL

DESCRIPTION.

The

Model

58BXPJ

is

an

accessory

unit

to

be

used

in

conjunction

with

the

Model

58B

Impulse

Counter

and

Noise

Measuring

Set

.

It

mounts

in

the

cover

and

derives

its

power

from

the

Model

58B

unit.

A

power

cord

permanently

attached

to

the

Model

58BXPJ

is

stored

in

the

cord

compartment

.

1.

2

The

Model

58BXPJ

will

me

.

asure

the

peak

to

peak

phase

jitter,

in

degrees

of

a

1000Hz

signal.

The

phase

jitter

is

read

on

a

self-contained

meter

with

a

1°

0

to

100

log

scale

.

1.

3

Input

line

connections

are

made

to

the

tip-ring-sleeve

binding

posts

or

a

jack

for

a

310

type

plug.

A

DIAL

jack

and

switchable

hold

coil

are

provided

for

dial-

ing

through

.

Line

bridging

or

750n

ter-

mination

is

provided

.

The

input

is

balanced

and

DC

blocked

for

lOOV.

A

set

of

binding

posts

and

a

jack

for

a

310

type

plug

are

provided

for

connecting

the

Model

58BXPJ

output

circuit

to

the

Model

58B

line

input

for

impulsive

phase

hit

measurement

. A

conversion

chart

from

dBrn

to

degrees

for

phase

hits

is

supplied.

1-1

l

t

{

l

lJ

u

l.

L

TTS

58AXPJ

Model

58BXPJ

Se

ction

2

SECTION

2

SPECIFICATIONS

TTS

58AXPJ,

Model

58BXPJ

and

Model

58BXPJR

INPUT

SIGNAL

LEVEL

REQUIREMENTS:

INPUT

IMPEDANCE:

INPUT

BALANCE:

INPUT

DC

BLOCKING

:

HOLD

CIRCUIT:

OPERATING

TEST

FREQUENCY

:

OPERATING

TEMPERATURE

RANGE:

METER

SCALE

CALIBRATION:

METER

READING

ACCURACY:

PHASE

HITS

OUTPUT:

POWER

REQUIREMENTS:

Model

TTS

58AXPJ:

Models

58BXPJ

and

58BXPJR

:

Model

TTS

58AXPJ:

Model

58BXPJR:

Model

58BXPJ:

-30

dBm

to

+10

dBm

Terminated,

750

n

+1

Oo/o

Bridging

~

15Kn.@

lKhz

>

70

dB@

1Khz

>

90

dB@

50

Hz

Input

blocked

for

l

00

Vdc

D.

C.

Resistance

approximately

490r2

1000Hz

.±_lOo/o

0°

<C-

50°

C,

32°

F -

l20°F

0 0

Log

Scale,

l

to

100

peak

to

peak

.±.

1

Oo/o

.±.

l 0

of

reading

Factory

Calibrated

for

0.

7V

peak

in

0 .

12

H2load@

*

50

peak

phase

shift,

for

use

with

NEC

TTS

SSA

or

Model

58B

.

US

VAC

-230

VAC,

50Hz/400Hz

approximately

0 . 4

watts.

Appro

.

xima

tely

2.

5

watts

total

w

hen

supplying

power

to

TTS

58A.

+12

Vdc,

+SV

de

derived

from

Models

58B

or

58BR.

TTS

58A

Cover

Accessory

Size:

14"

w X

8"

H X 4

7/16

.

Weight:

9

pounds

Rack

Mounted

Unit

Size:

5 7

/32"

x

19"

Rack

Panel

6"

D

Weight

: 7

pounds

Model

58B

Cover

Accessory

Size:

14

t W x 9

3/8"

H x

4"

D

Weight:

8.

5

pounds

2-1

Section

2

2-2

50

~

Q

3

2

0

5

20

5

TTS

58AXPJ

Model

58BXPJ

.

!lf

10

1/

..

..

s

e.

5

~

~

~

3

iE

I

.5

I

1/

1/

50

60 70 80 90

IMPULSE

SENSITIVITY

(D&RN)

I-PATCH

O

UTPUT

OF

58BXPJ

TO

586 liNE

INPUT

2-

SET

588

IMPEDANCE

TO

600n

&RDG

3-

SET

588

NETWORK

SWITCH

TO

EXT

4-

SET

DESIRED

IMPULSE

SENSITIVITY

7

6

ON

l 2

Figure

3-l

Front

Panel

Controls

f

310

_r;

~

-

·

\.__

OUTPUT

.

TO

588

__/

NORTHEAST

ElECTRONICS

CORP.

CONCORD

, N.H

.,

U.S.A.

MEAS

. NOISE

l.

3 8

L

11

I

I

~

J

11

fJ

f

r,

L

(_J

fj

L

L

l.

u

L

TTS

58AXPJ

Model

58BXPJ

SECTION

3

Section

3

OPERATING

INSTRUCTIONS

3. 1

FRONT

PANEL

CONTROLS

(Refer

to

Fig

.

3-1).

Name

of

Control

1.

FUNCTION

2 .

BRDG

-TERM

3 .

HOLD-NO

HOLD

4 .

MEAS

.

NOISE-MEAS

.

PHASE

5 .

ADJUST

FOR

MINIMUM/READ

(SWITCH)

6 .

ADJUST

FOR

MINIMUM

(CONTROL)

7 .

POWER-

ON-

OFF

8.

Function

Switches

the

TIP

-RING

input

line

terminals

to

the

DIAL

jack

or

to

the

set

input

\2~1ance

transformer.

Provides

for

bridging

or

termina-

ing

a

circu

i t .

Provides

for

connecting

a

hold

coil

across

the

TIP-RING

terminals

of

the

incoming

line

Switches

the

TIP

-RING

input

line

terminals

to

the

input

circuit

of

the

phase

jitter

set

or

to

the

OUTPUT

TIP-RING

termbals

when

in

the

MEAS-NOISE

position

Selects

a

faster

time

constant

for

locking

on

frequency

_

when

in

the

ADJUST

FOR

MIN.

position

.

Provides

the

means

for

frequency

locking

the

phase

jitter

set

to

the

test

signal

frequency

.

Power

Switch

Jacks

are

provided

for

310

plugs

for

the

LINE

,

DIAL

and

OUTPUT

circuits

In

addition

binding

posts

are

provided

.

for

the

LINE

and

OUT-

PUT

circuits

3-1

Sec~ion

3

TTS

58AXPJ

Model

58BXPJ

3.2

/

3-2

SECTION

3

OPERATION

a.

Model58BXPJ:

Open

compartment

door

and

pull

out

power

cord

perma-

nently

attached

to

Model

58BXPJ

.

b .

Model

58BXPJR

:

Connect

and

secure

connector

end

of

cable

to

the

Model

58BXPJR

receptical

located

on

rear

.

(Cable

is

supplied

with

the

Model

58BXPJR)

.

c.

.TTS

58AXPJ

:

Connect

AC

power

cord

to

commercial

power

outlet.

IMPORTANT

Internal

115/230

V

ac

sel-

ector

switch

is

set

to

115

V

ac

at

factory.

For

230

V

ac

operation,

set

must

be

removed

from

case

and

slide

switch

activated

to

desir

ed

position.

d .

Model

58BXPJ,

Model

58BXPJR:

Insert

310

plug

on

other

end

of

cable

into

58B

jack

designated

58BXPJ

power.

In

the

case

of

the

Model

58BR,

the

power

jack

is

available

on

.

rear

of

set

as

well

as

on

front

panel

.

e.

Turn

power

switch

on

.

TTS

58AXPJ:

If

used

with

TTS58A

Impuls

e

Counter,

patch

between

310

jack

designated

TTS

58A

power

located

on

TTS

58AXPJ

front

panel

to

TTS

58A

310

POWER

jack

desig-

nated

-48V

POWER

.

Negative

voltage

appears

on

the

tip

and

sleeve

is

ground

in

all

cases

.

This

feature

provides

for

operating

the

TTS

58A

off

commercial

power

if

desired

.

f .

Apply

power

to

the

TTS

58A.

Model

58B

or

Model

58BR

.

(See

Model

58B,

Model

58BR

or

TTS

58A

operating

instructions.)

3.

3

Connect

the

external

line

to

b e

tested

to

the

310

LINE

jack

or

to

the

TIP

-RING-

SLEEVE

binding

post

of

the

phase

measuring

set.

3.

4

If

the

connection

is

to

be

dialed:

a.

Connect

a

dial

or

tepephone

3.5

set

to

the

310

jack

designated

DIAL

.

b.

Place

FUNCTION

switch

to

DIAL

position

.

(This

transfers

the

LI

NE

terminals

to

the

DIAL

jack)

.

c.

Activate

toggle

switches

for

desired

functions

i.e.

TERM,

HOLD,

MEAS.

PHASE.

d .

Dial

the

desired

number

.

e

When

line

connection

has

been

established,

place

FUNCTION

switch

to

TEST

(1000Hz)

position

.

NOTE

:

Test

frequency

dialed

.

must

be

1000H

z

±10%

.

f.

The

dial

may

now

be

remov

ed .

The

internal

hold

circuit

will

main-

tain

the

connection

.

TO

MEASURE

PHASE

JITTER

a.

With

.

the

switch

in

the

READ

position,

slowly

rotate

the

control

R30,

(located

near

the

meter)

over

it

1 s

entire

range

until

frequency

lock

is

indicated

and

then

carefully

adjust

for

minimum

reading.

Read

phase

jitter

in

peak

to

peak

degrees

directly

on

meter

.

NOTE:

Frequency

lock

is

indicated

when

meter

reads

on

scale

.

If

unable

to

adjust

for

frequency

loc

k,

follow

steps

(b)

and

(c).

J

..J

r

f:

r

l

l

L

TTS

58AXPJ

Model

58BXPJ

b .

WithREAD

switchintheADJUST

FOR

MINIMUM

position,

slowlv

adjust

control

for

minimum

meter

readin~

(~~·t.

<1

~,.-

,,_t./l,C(_,J;_(/~(/

~

/

t:J

/>-j=')

c .

Place

switch

in

the

READ

position

and

readjust

for

minimum

reading·

~

Read

phase

jitter

in

peak

to

peak

degrees

directly

on

meter

.

3 . 6

TO

MEASURE

PHASE

SHIFT

DUE

TO

IMPULSE.

a .

Patch

cord

between

phase

mea-

suring

set

TIP-RING

binding

posts

or

jack

for

310

plug

designated

OUTPUT

and

the

LINE

input

of

the

IMPULSE

COUNTER

(58B,

58BR,

TTS

58A,

etc.)

Section

3

c.

Set

Model58B

front

panel

controls

as

follows:

1.

Turnbutton

switch

to

MEAS.

position.

2.

Depress

pushbuttons

for

600r.l

BRDG

and

BAL

XFMR.

3.

NETWORK

switch

set

to

EXT

.

position.

4.

Set

BLANKING

INTER

VAL

for

desired

count

rate,

between

4

pps

to

100

pps.

5.

Set

SELECTOR

switch

to

Channel

A .

6 .

Set

MIN

. .

LEVEL

control

(IMPULSE

NOISE)

and

INCRE-

MENT

control

to

sensitivity

corresponding

to

desired

span

of

degrees

to

be

measured.

(See

Table

3-2)

b.

TTS

58A:

Set

front

panel

controls

as

follows:

3 . 7

Adjust

for

minimum

reading

as

outlined

in

paragraph

3.

5 a .

and

b .

above

.

1 .

INPUT

switch

set

to

60.0

r.l

2.

Place

BRDG-

TERM

switch

to

BRDG

position

.

3;

WTG

switch

set

to

EXT

position

4.

Connect

strap

bE;)tween

IN

and

OUT

binding

posts

5.

Set

channels

A,

B,

and

C

sensitivity

controls

and

main

sensitivity

control

to

cover

desired

span

of

degrees

to

be

measured.

(See

Table

3-1)

TABLE

3-1

Main

Sens.

Control

Channel

Sens.

Controls

70

70

70

Min.

Level

(Impulse

Noise

dBrn)

70

70

70

70

c

B

A

10

6

0

TABLE

3-2

Increment

Thresh.

Level

12

8

4

0

NOTE

:

Peak

to

peak

phase

jitter

reading

on

meter

must

be

below

the

span

of

interest

.

when

making

phase

hits

measurements.

Channel

Sens

.

Corresponding

Phase

Hits

80

dBrn

76

dBrn

70

dBrn

Channel

Sens

.

D

-82

dBrn

C-78

dBrn

B-74

dBrn

A-70

dBrn

Corresponding

Phase

Hits

zo

0

12.5

0

80

5

0

3-3