NEC TTS 58AXPJ Manuel utilisateur

NORTHEAST

ELECTRONICS

CORPORATION

P.O.

BOX

649-

CONCORD,

N.H.

03301

{603)

224-7466

. ..

•

INSTRUCTION

MANUAL

/ /

LONG

Lr·

I:J""\D

L....

IPMENT

TESTING

ANNEXE

MoDEl

tts~a~~;t

ST_,

'~-

and

MODEl

58BXPJ

PHASE

JITTER

MEASURING

SETS

ISSUE

NORTHEAST ELECTRONICS

CORPORATION

P.O.

BOX

649-

CONCORD,

N.H.

03301

PRINTED

USA APR

1970

PROPRIETARY NOTICE

The

information

contained

this

publication

the

property

Northeast

Electronics

Corporation

and

may

not

reproduced

used

for

manufacturing

purposes

disclosed

third

parties

without

the

written

permission

Northeast

Electronics

Corpor

ation.

WARRANTY

NEG

warrants

all

products

manufactured

sold

NEG

free

from

defects

materials

and

workmanship

subject

the

following

terms

and

provisions.

NEG's

obligations

under

this

warranty

are

limited

repair-

ing,

adjusting,

replacing

our

option,

with

reasonable

prompt-

ness,

any

NEG

product

which

shall

with

twelve

(12)

months

after

delivery

the

original

purchaser,

and

after

normal

and

proper

us-

age,

prove

defective

NEG

inspection,

provided

that

the

purchaser

shall

hav

reasonably

inspected

products

when

received

and

notified

NEG

any

apparent

defects

discovered

within

fifteen

(15)

days

receipt

shipment.

NEG

shall

not

liable

for

any

manufacturing

costs

the

buyer,

lost

profits

good

will

the

buyer'

any

other

special

consequential

damages

susta

ined

expenses

incurred

the

buye;r

reason

the

use

sale

any

defective

NEG

product.

products

may

returned

NEG

except

with

our

written

permission.

After

receiving

NEG

factory

authorization,

material

requiring

repair

replacement

should

sent

prepaid

the

fac-

tory

accompanied

written

statement

setting

forth

complete-

possible

the

defects

and

the

conditions

under

which

they

occur-

Material

liv

ered

NEG

sha

not

considered

defective

satisfactorily

fulfills

the

buyer's

performance

requirements

and/or

accordanc

wi~h

ap'proved

samples.

NEG's

obligations

perfor~ance

product:>.

delivered

shall

limited

comply-

ing

with

specifications

accompanying

purchase

order

wl.th

pub-

lished

specifications

standard

catalog

items.

This

warranty

does

not

extend

any

NEG

products

which

have

been

subject

misuse,

neglect,

accidents

improper

installation

applications,

nor

shall

extend

units

which

have

been

repaired

substantially

altere

outside

the

NEG

factory,

nor

any

associated

instruments,

equipments

apparatus.

This

warranty

lieu

all

other

war-

ranties,

express

implied.

Section

TTS

58AXPJ

Model

58BXPJ

TABLE

CONTENTS

Title

GENERAL

DESCRIPTION

SPECIFICATIONS

OPERATING

INSTRUCTIONS

CIRCUIT

DESCRIPTION

MAINTENANCE

AND

CALIBRATI

ELECTRONIC

PARTS

LIST

SCHEMA

TIC

DIAGRAMS

Page

1-1

2-1

3-1

4-1

5-1

6-1

7-1

TTS

58AXPJ

Model

58BXPJ

Section

SECTION

DESCRIPTION

GENERAL

DESCRIPTION.

The

Model

58BXPJ

accessory

unit

used

conjunction

with

the

Model

58B

Impulse

Counter

and

Noise

Measuring

Set

mounts

the

cover

and

derives

its

power

from

the

Model

58B

unit.

power

cord

permanently

attached

the

Model

58BXPJ

stored

the

cord

compartment

The

Model

58BXPJ

will

asure

the

peak

phase

jitter,

degrees

1000Hz

signal.

The

phase

jitter

read

self-contained

meter

with

1°

100

log

scale

Input

line

connections

are

made

the

tip-ring-sleeve

binding

posts

jack

for

310

type

plug.

DIAL

jack

and

switchable

hold

coil

are

provided

for

dial-

ing

through

Line

bridging

750n

ter-

mination

provided

The

input

balanced

and

blocked

for

lOOV.

set

binding

posts

and

jack

for

310

type

plug

are

provided

for

connecting

the

Model

58BXPJ

output

circuit

the

Model

58B

line

input

for

impulsive

phase

hit

measurement

. A

conversion

chart

from

dBrn

degrees

for

phase

hits

supplied.

1-1

{

TTS

58AXPJ

Model

58BXPJ

ction

SECTION

SPECIFICATIONS

TTS

58AXPJ,

Model

58BXPJ

and

Model

58BXPJR

INPUT

SIGNAL

LEVEL

REQUIREMENTS:

INPUT

IMPEDANCE:

INPUT

BALANCE:

INPUT

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

+10

dBm

Terminated,

750

Oo/o

Bridging

15Kn.@

lKhz

dB@

1Khz

dB@

Input

blocked

for

Vdc

Resistance

approximately

490r2

1000Hz

.±_lOo/o

0°

<C-

50°

32°

F -

l20°F

0 0

Log

Scale,

100

peak

.±.

Oo/o

.±.

l 0

reading

Factory

Calibrated

for

peak

0 .

H2load@

peak

phase

shift,

for

use

with

NEC

TTS

SSA

Model

58B

VAC

-230

VAC,

50Hz/400Hz

approximately

0 . 4

watts.

Appro

xima

tely

watts

total

hen

supplying

power

TTS

58A.

+12

Vdc,

+SV

derived

from

Models

58B

58BR.

TTS

58A

Cover

Accessory

Size:

14"

w X

H X 4

7/16

Weight:

pounds

Rack

Mounted

Unit

Size:

5 7

/32"

19"

Rack

Panel

Weight

: 7

pounds

Model

58B

Cover

Accessory

Size:

t W x 9

3/8"

H x

Weight:

pounds

2-1

Section

2-2

TTS

58AXPJ

Model

58BXPJ

!lf

60 70 80 90

IMPULSE

SENSITIVITY

(D&RN)

I-PATCH

UTPUT

58BXPJ

586 liNE

INPUT

SET

588

IMPEDANCE

600n

&RDG

SET

588

NETWORK

SWITCH

EXT

SET

DESIRED

IMPULSE

SENSITIVITY

l 2

Figure

3-l

Front

Panel

Controls

310

_r;

\.__

OUTPUT

588

__/

NORTHEAST

ElECTRONICS

CORP.

CONCORD

, N.H

U.S.A.

MEAS

. NOISE

3 8

(_J

TTS

58AXPJ

Model

58BXPJ

SECTION

Section

OPERATING

INSTRUCTIONS

3. 1

FRONT

PANEL

CONTROLS

(Refer

Fig

3-1).

Name

Control

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

Function

Switches

the

TIP

-RING

input

line

terminals

the

DIAL

jack

the

set

input

\2~1ance

transformer.

Provides

for

bridging

termina-

ing

circu

i t .

Provides

for

connecting

hold

coil

across

the

TIP-RING

terminals

the

incoming

line

Switches

the

TIP

-RING

input

line

terminals

the

input

circuit

the

phase

jitter

set

the

OUTPUT

TIP-RING

termbals

when

the

MEAS-NOISE

position

Selects

faster

time

constant

for

locking

frequency

when

the

ADJUST

FOR

MIN.

position

Provides

the

means

for

frequency

locking

the

phase

jitter

set

the

test

signal

frequency

Power

Switch

Jacks

are

provided

for

310

plugs

for

the

LINE

DIAL

and

OUTPUT

circuits

addition

binding

posts

are

provided

for

the

LINE

and

OUT-

PUT

circuits

3-1

Sec~ion

TTS

58AXPJ

Model

58BXPJ

3.2

3-2

SECTION

OPERATION

Model58BXPJ:

Open

compartment

door

and

pull

out

power

cord

perma-

nently

attached

Model

58BXPJ

b .

Model

58BXPJR

Connect

and

secure

connector

end

cable

the

Model

58BXPJR

receptical

located

rear

(Cable

supplied

with

the

Model

58BXPJR)

.TTS

58AXPJ

Connect

power

cord

commercial

power

outlet.

IMPORTANT

Internal

115/230

sel-

ector

switch

set

115

factory.

For

230

operation,

set

must

removed

from

case

and

slide

switch

activated

desir

position.

d .

Model

58BXPJ,

Model

58BXPJR:

Insert

310

plug

other

end

cable

into

58B

jack

designated

58BXPJ

power.

the

case

the

Model

58BR,

the

power

jack

available

rear

set

well

front

panel

Turn

power

switch

TTS

58AXPJ:

used

with

TTS58A

Impuls

Counter,

patch

between

310

jack

designated

TTS

58A

power

located

TTS

58AXPJ

front

panel

TTS

58A

310

POWER

jack

desig-

nated

-48V

POWER

Negative

voltage

appears

the

tip

and

sleeve

ground

all

cases

This

feature

provides

for

operating

the

TTS

58A

off

commercial

power

desired

f .

Apply

power

the

TTS

58A.

Model

58B

Model

58BR

(See

Model

58B,

Model

58BR

TTS

58A

operating

instructions.)

Connect

the

external

line

b e

tested

the

310

LINE

jack

the

TIP

-RING-

SLEEVE

binding

post

the

phase

measuring

set.

the

connection

dialed:

Connect

dial

tepephone

3.5

set

the

310

jack

designated

DIAL

Place

FUNCTION

switch

DIAL

position

(This

transfers

the

terminals

the

DIAL

jack)

Activate

toggle

switches

for

desired

functions

i.e.

TERM,

HOLD,

MEAS.

PHASE.

d .

Dial

the

desired

number

When

line

connection

has

been

established,

place

FUNCTION

switch

TEST

(1000Hz)

position

NOTE

Test

frequency

dialed

must

1000H

±10%

The

dial

may

now

remov

ed .

The

internal

hold

circuit

will

main-

tain

the

connection

MEASURE

PHASE

JITTER

With

the

switch

the

READ

position,

slowly

rotate

the

control

R30,

(located

near

the

meter)

over

1 s

entire

range

until

frequency

lock

indicated

and

then

carefully

adjust

for

minimum

reading.

Read

phase

jitter

peak

degrees

directly

meter

NOTE:

Frequency

lock

indicated

when

meter

reads

scale

unable

adjust

for

frequency

loc

steps

(b)

and

(c).

..J

TTS

58AXPJ

Model

58BXPJ

b .

WithREAD

switchintheADJUST

FOR

MINIMUM

position,

slowlv

adjust

control

for

minimum

meter

readin~

(~~·t.

~,.-

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

t:J

/>-j=')

c .

Place

switch

the

READ

position

and

readjust

for

minimum

reading·

Read

phase

jitter

peak

degrees

directly

meter

3 . 6

MEASURE

PHASE

SHIFT

DUE

IMPULSE.

a .

Patch

cord

between

phase

mea-

suring

set

TIP-RING

binding

posts

jack

for

310

plug

designated

OUTPUT

and

the

LINE

input

the

IMPULSE

COUNTER

(58B,

58BR,

TTS

58A,

etc.)

Section

Set

Model58B

front

panel

controls

follows:

Turnbutton

switch

MEAS.

position.

Depress

pushbuttons

for

600r.l

BRDG

and

BAL

XFMR.

NETWORK

switch

set

EXT

position.

Set

BLANKING

INTER

VAL

for

desired

count

rate,

between

pps

100

pps.

Set

SELECTOR

switch

Channel

A .

6 .

Set

MIN

. .

LEVEL

control

(IMPULSE

NOISE)

and

INCRE-

MENT

control

sensitivity

corresponding

desired

span

degrees

measured.

(See

Table

3-2)

TTS

58A:

Set

front

panel

controls

follows:

3 . 7

Adjust

for

minimum

reading

outlined

paragraph

5 a .

and

b .

above

1 .

INPUT

switch

set

60.0

r.l

Place

BRDG-

TERM

switch

BRDG

position

WTG

switch

set

EXT

position

Connect

strap

bE;)tween

and

OUT

binding

posts

Set

channels

and

sensitivity

controls

and

main

sensitivity

control

cover

desired

span

degrees

measured.

(See

Table

3-1)

TABLE

3-1

Main

Sens.

Control

Channel

Sens.

Controls

Min.

Level

(Impulse

Noise

dBrn)

TABLE

3-2

Increment

Thresh.

Level

NOTE

Peak

peak

phase

jitter

reading

meter

must

below

the

span

interest

when

making

phase

hits

measurements.

Channel

Sens

Corresponding

Phase

Hits

dBrn

Channel

Sens

-82

dBrn

C-78

dBrn

B-74

dBrn

A-70

dBrn

Corresponding

Phase

Hits

12.5

3-3

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