EG&G ORTEC 427 User manual

1GO

MIDLAND

ROAD,

OAK

RIDGE.

TENNESSEE,

37830

iREA

CODE

(615)

483-8451

TWX

810-572-1078

INSTRUCTION

MANUAL

427

DELAY

AMPLIFIER

E(3S.G

COMPANY

IT-

INSTRUCTION

MANUAL

427

DELAY

AMPLIFIER

Serial

No.

Purchaser

Date

Issued

INCORPORATED

P.O.

BOX

OAK

RIDGE,

TENNESSEE

37830

Telephone

(615)

483-8451

TWX

810-572-1078

ORTEC

Incorporated

1966

Printed

U.S.A.

TABLE

CONTENTS

Page

WARRANTY

PHOTOGRAPH

DESCRIPTION

1-1

SPECIFICATIONS

2-1

2.1

Electrical

2-1

2.2

Mechanical

2-2

INSTALLATION

3-1

3.1

General

Installation

Considerations

3-1

3.2

Connection

Power

Nuclear

Standard

Bin,

ORTEC

401A/402A

3-1

3.3

Signal

Connections

427

3-1

3.4

Linear

Output

Signal

Connections

and

Terminating

Impedance

Considerations

3-3

OPERATING

INSTRUCTIONS

4-1

4.1

Initial

Testing

and

Observation

Pulse

Waveforms

4-1

4.2

Connector

Data

4-1

4.3

Typical

Operating

Considerations

4-1

CIRCUIT

DESCRIPTION

5-1

MAINTENANCE

6-1

6.1

Testing

Performance

the

Delay

Amplifier

6-1

6.2

Changing

Amplifier

Gain

6-2

6.3

Suggestions

for

Troubleshooting

6-2

6.4

Tabulated

Test

Point

Voltages

6-3

BIN/MODULE

CONNECTOR

ASSIGNMENTS

FOR

AEC

STANDARD

NUCLEAR

INSTRUMENT

MODULES

7-1

BLOCK

DIAGRAM

AND

SCHEMATIC

427-0100-Bl

ORTEC

427

Block

Diagram

427-0100-Sl

ORTEC

427

Schematic

STANDARD

WARRANTY

FOR

ORTEC

ELECTRONIC

INSTRUMENTS

DAMAGE

TRANSIT

Shipments

should

examined

immediately

upon

receipt

for

evidence

external

con

cealed

damage.

The

carrier

making

delivery

should

notified

immediately

any

such

damage,

since

the

carrier

normally

liable

for

damage

shipment.

Packing

materials,

waybills,

and

other

such

documentation

should

preserved

order

establish

claims.

After

such

notification

the

carrier,

notify

ORTEC

the

circumstances

that

may

assist

damage

claims

and

providing

replacement

equipment

when

necessary.

WARRANTY

ORTEC

warrants

its

electronic

products

free

from

defects

workmanship

and

materials,

other

than

vacuum

tubes

and

semiconductors,

for

period

twelve

months

from

date

ship

ment,

provided

that

the

equipment

has

been

used

proper

manner

and

not

subjected

abuse.

Repairs

replacement,

ORTEC

option,

will

made

without

charge

the

ORTEC

factory.

Shipping

expense

will

the

account

the

customer

except

cases

defects

discovered

upon

initial

operation.

Warranties

vacuum

tubes

and

semiconductors,

made

their

manufacturers,

will

extended

our

customers

only

the

extent

the

manufacturers'

liability

ORTEC.

Special

selected

vacuum

tubes

semiconductors

cannot

warranted.

ORTEC

reserves

the

right

modify

the

design

its

products

without

incurring

responsibility

for

modification

previously

manufactured

units.

Since

installation

conditions

are

beyond

our

control,

ORTEC

does

not

assume

any

risks

liabilities

associated

with

the

methods

installation,

installation

results.

QUALITY

CONTROL

Before

being

approved

for

shipment,

each

ORTEC

instrument

must

pass

stringent

set

quality

control

tests

designed

expose

any

flaws

materials

workmanstiip.

Permanent

records

these

tests

are

maintained

for

use

warranty

repair

and

source

statistical

information

for

design

improvements.

REPAIR

SERVICE

ORTEC

instruments

not

warranty

may

returned

the

factory

for

repairs

checkout

modest

expense

the

customer.

Standard

procedure

requires

that

returned

instruments

pass

the

same

qual

ity

control

tests

those

used

for

new

production

instruments.

Please

contact

the

factory

for

instructions

before

shipping

equipment.

■■a..

□

RTEC^

MODEL

427

DELAY

AMPLIFIER

25.

.5At»ec

/isec

/xsec

Msec

INPUT

-.J

OUTPUT

NOTICE

Slide

switches

are

used

the

427

select

the

desired

amount

signal

delay.

The

contacts

these

switches

are

coated

with

lubricant

prevent

them

from

oxidizing.

this

lubricant

removed

from

portion

the

contact,

oxidation

may

occur.

This

con

result

some

difficulty

with

these

switches

making

contact

properly.

This

problem

can

alleviated

operating

the

switch

few

times.

switch

does

not

moke

contact,either

the

signal

will

not

appear

the

output

will

appear

reduced

amplitude.

this

happens,

simply

operate

the

switch

few

times

remove

the

oxide.

1-1

ORTEC

427

DELAY

AMPLIFIER

DESCRIPTION

The

427

Delay

Amplifier

has

nominal

gain

unity

and

provides

the

capability

linearly

delaying

linear

logic

signal

from

zero

4.75

microseconds

0.25

microsecond

increments.

The

amount

delay

selected

five

front

panel

switches.

This

delay

accomplished

inserting

any

combination

five

delay

lines

0.25,

0.5,

.0,

2.0

microseconds

series

with

the

signal

path.

These

delay

lines

are

terminated

their

characteristic

impedance

both

ends

minimize

pedance

mismatch

and

resultant

pulse

reflections

the

lines.

NOTE:

The

427

has

limited

bandwidth

shown

the

specifications.

Due

this

fact,

should

not

used

delay

signals

varying

bandwidth

such

the

output

biased

amplifier

(i.e.,

ORTEC

408).

biased

amplifier

used

system,

the

427

should

used

either

front

after

the

411

Pulse

Stretcher,

where

the

pulses

have

uniform

bandwidth.

2-1

SPECIFICATIONS

2,1

Eiecirical

Input

Polarity

Input

Signal

Span

Input

impedance

Gain

Variation

with

Delay

Feedthrough

and

Delay

Ripple

Linear

Delay

Minimum

(Zero)

Delay

Maximum

Delay

Line

Tolerances

Rise

Time

and

Bandwidth

Function

Delay

Output

Impedance

Linearity

Either

positive

negative

±10

volts

linear

range

Greater

than

IKfi

Unity

±2%

zero

delay

10%,

-2%

for

any

combination

delays

(Ipsec

DRC

shaped

pulse)

Less

than

(Ipsec

DRC

shaped

pulse)

Any

combination

the

fol

lowing:

0.25, 0.5,

1.0, 1.0,

and

2.0psec

nsec

4.75iJsec

Delay

Rise

Time

(ns)

Bandwidth

280

.25

MHz

0.25

280

.25

MHz

0.5

290

1.20

MHz

1.0

310

1.13

MHz

2.0

340

1.03

MHz

3.0

360

972

KHz

4.0

370

945

KHz

4.5

380

920

KHz

4.75

400

875

KHz

Linear

range

±10

volts.

±11

volts

maximum

Approximately

ohm,

short-circuit

protected

Integral

nonlinearity

less

than

±0.08%

from

0.1

volts

Temperature

Stability

Operating

Temperature

Range

2-2

Gain

shift

the

amplifier

less

than

±0.01%

per

°C;

additional

shift

-0.013%

per

°C

should

expected

for

each

microsecond

delay

used.

5CP

Input

and

Output

Connectors

BNC

—

UG-1094

A/U

Power

Requirements

+24V

+12V

-12V

-24V

2.2

Mechanical

The

427

housed

single-width

Nuclear

Standard

Module

(refer

USAEC

Report

TID-20893

(Rev.)),

and

weighs

two

pounds.

The

427

does

not

contain

power

supply

and

therefore

must

obtain

the

necessary

operating

power

from

the

Nuclear

Standard

Bin

and

Power

Supply,

ORTEC

401A/402A.

All

signals

and

out

the

module

ore

front

panel

BNC

connectors

and

the

input

power

via

the

connector

the

rear

panel.

INSTALLATION

3.1

General

Installal-ion

Considerations

The

427,

used

conjunction

with

401A/402A

Bin

and

Power

Supply,

tended

for

rock

mounting,

and

therefore

necessary

ensure

that

vacuum

tube

equipment

operating

the

same

rack

with

the

427

have

sufficient

cool

ing

air

circulating

prevent

any

localized

heating

the

all-transistor

circuitry

used

throughout

the

module.

The

temperature

equipment

mounted

racks

can

easily

exceed

the

recommended

maximum

unless

precautions

ore

taken.

The

427

should

not

subjected

temperatures

excess

120°F

(50°C).

3.2

Connection

Power

Nuclear

Standard

Bin,

ORTEC

401

A/402A

The

427

contains

internal

power

supply,

and

therefore

must

obtain

power

from

Nuclear

Standard

Bin

and

Power

Supply

such

the

401A/402A.

recommended

that

the

bin

power

supply

turned

off

when

insertitig

remov

ing

modules.

The

400

Series

designed

that

not

possible

overload

the

bin

power

supply

with

ful

complement

modules

the

bin;

however,

this

may

not

true

when

the

bin

contains

modules

other

than

those

ORTEC

deisgn,

and

such

cases,

the

power

supply

voltages

should

checked

after

the

insertion

modules.

The

401A/402A

has

test

points

the

power

supply

control

panel

monitor

the

voltages.

When

using

the

427

outside

the

401A/402A

Bin

and

Power

Supply,

sure

that

the

jumper

cable

used

properly

accounts

for

the

proper

supply

grounding

circuits

provided

the

recommended

AEC

standards

TID-20893

(Rev.).

Both

high

quality

and

power

return

ground

connections

are

provided

ensure

proper

reference

voltage

feedback

into

the

power

supply,

and

these

must

preserved

remote

cable

installations.

Care

must

also

exercised

avoid

ground

loops

when

the

module

not

phys-

icoIly

the

bin.

3.3

Signal

Connections

427

The

427

input

compatible

with

all

linear

output

signals

the

ORTEC

400

Series

modular

electronic

instruments.

The

medium-speed

logic

pulse

the

400

Series

also

suitable

for

use

with

the

427;

however,

the

rise

time

the

logic

pulse

wil

increased

considerably

because

the

limited

bandwidth

the

427.

(See

specifications

for

bandwidth

and

rise

time

vs.

delay.)

The

sig

nal

range

the

input

from

volts.

The

input

pulse

shape

can

wide

the

typical

preamplifier

output,

i.e.,

time

constant

microseconds.

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