Global Specialties Global Specialties 4001 Manual

Tue

4OOl

UnaavARrABLE

PutsE

Operation

aENERATIR

Manual

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

1486 Highland Avenue,
Cheshire,
(203)27

CT 06410

2-3285 FAX:

Unit 2

(203)27

2-4330

WARRANTY

Global

be

free
ship for
of

original purchase.

Global

­limited

returned

paid, within
purchase.

Units returned

have been
accident,
adjusted

by

Global

paired by
covered

Specialties@ warrants

from

to

defective

a period

Specialties@

repairing

to

the factory,

one year from

subject

or have

contrary

Specialties@,
unauthorized

bv

this warrantv.

this

device

material

of one

to abuse, misuse,

been

to the instructions

full

under

the defective

shipping

to

Global

connected, installed

or that have

persons

or workman-

year from

this warranty

device

charges

date

of

Specialties@

damage

furnished

been

will not

FACTORY

to

the date

is

when

pre-

original

that

or
or

re-

be

Global
continue
or design
notice
whatsoever.

The
ties for
mayresultfromthe

by

the

This

tions
no

agent

ties@

is
tioninconnectionwiththe
this

device.

SERVICE

Specialties@

models,

of this

and

without

purchaser

any

damages

purchaser,

warranty

or warranties

or representative

authorized

change

device

agrees

his

is

to assume

AND

reserves

specifications,

at any

incurring

to assume

and

or bodily

/

use

ormisuse

employees,

in lieu

expressed

of ali representa-

of

any

sale and

the

right

to

time

without

any

obligation

all

liabili

inj

ury which

this

of

or agents.

or implied

Global

other

device

Special-

oUtiga-

purchase

dis-

price

and

of

Global

To

All

Global

Specialties@

obtain a return

Customer

Specialties@

will

BREADBOARDING

meet

service and repair

year,

subject to

merchandise

Service Department

Tel. [phone]

Visit us at www.TestEquipmentDepot.com

GLOBAL SPECIALTIES

1486 Highland Avenue, Unit 2
Cheshire, CT 06410
[phone]

ATTN:

breadboarding

your requirements,

CUSTOMER

the warranty

authorization

SOCKETS
sockets are

NO

QUESTIONS

this instrument

conditions

(RMA)

for

an

RMA

FAX:

SERVICE

return

and all

or write:

[phone]

DEPARTMENT

LIFETIME
guaranteed

it and

ASKED.

free

of charge

above.

required

shipping

GUARANTEE

for

we will

replace

for a

for

all returns,

instructions:

life.

If a

it,

period

socket

of

one full

phone

ever fails to

our

and TM

@

trademarks

Specifications

are the

property

subject to change

of INTERPLEX

ELECTRONICS,

without

notice.

INC., New

Haven,

CT.

TABLE

OF

CONTENTS

SPECIFICATIONS..

INTRODUCTION.....

DESCRIPTION.......

LOCATION
CHECKING

APPLICATIONS.....

CIRCUIT

REcALIBRATIoN

CIRCUIT
SERV|CE

AND

DESCRI

DESCRIPTION

OUT

THE

4OO1

PTION.......

PRocEDURE

SCHEMATIC..........

AND

WARRANTY

LIST

FIGURE
FIGURE

l99l!

FIGURE
FIGURE
FIGURE
FIGURE
FIGURE
FIGURE

FIGURE
II9yl_E 11

FIGURE
FIGURE
FIGURE

FIGURE

1.

Location

2.

Run

Trig

q

4.

Gate

5.

One-Shot

6.

Run

Z.

Checkout

8.

Waveforms..............

9.

Checking

10.

Missing

Amptifier

12.

Transmission

13.

Scope

14.

Case

1s.

Circuit

of

Operating

lMode

Mode

Mode

Mode

and

Waveforms..............

Waveforms..............

Mode

and

Configuration..........

Trigger

pulse

Frequency

Waveform

Disassembly

Schematic........

..PAGE

.PAGE

..PAGE

OF

OPERATING

AND

tNFORMAT|ON..........................................pne

OF

com[lemented

;usE

ILLUSTRATIONS

Contro1s.............

waveforms..............

CONTROLS............PAGE

.....PAGE

...PAGE

nepLACEMENi............

B1BE

...PAGE

PAGE

pAGE

............PAGE

......,...PAGE

Waveforms..............

Squared

and

Detector

Line

Test...

Patterns-Transmission

Waveforms..

Gate

Response

and

Modes.....

Apptication..............

Test.........

Assembty

.

.

..............PAGE

.............PAGE

Line

Testing.......pAGE

..........................:.

...PAGE

..PAGE

.PAGE

.......pAGE

..........pAGE

...PAGE

.......PAGE

.pAGE

2
4
4

5
9
14

??

27

e ze

5

5

6

6

6
7

9

10

14
15

17
1g
20
25
27

IlPf_E

TABLE

1.

2.

LIST

Typical

Power/Output

square-wave

Retationships....................:.....

OF TABLES
patterns

and

Interpretation...................pAGE

16

..........pAGE

17

4OO1

SPECIFICATIONS

Frequency
Pulse

Spacing

Duty

Cycle:

Accuracy:

(Pulse
(Amplitude)

Jitter:

Operating

(pushbu

Range:

Width

Controls:

Width

Modes

tton

and

and

Spacing)

selectable)

0.5

Hz

to

5 MHz

1O0nsec.-1sec

Independent
controls.
provide
ranges.

107-to-1

+5%

typical,tlso/o

vernier

+5o/o of

Less

setting.

control

than

variable

Two

concentric,

continuous

range,

setting.

0.1%+S0psec.

in

7

overlapping

width

adjustment

cont.

adjustable

@

max

ranges.

and

spaiing

single-turn

verniers

between

Run:

Trig:

Gate:

One

Shot:

Square

Wave:

0.5

Hz

to

5 MHz,

through

DC
external

Generator

leading

pushbutton
mode.

Enables

Square
outputs
pushbutton.

pulse

to

approximately

source.

starts

edge

can

manual"One

wave
by

depressing

frequency

width/spacing

10

synchronously

gate

of

may

signal-"One

manually

Shot"

be

obtained

settable

MHz

activate

pushbutton.

"Square

controls.

from

with

Shot"

gate

at the
Wave"

in

this

Complement:

Q{guts

"COMPL"
time

may

pushbutton,

reference.

be

inverted

by

depressing

without

losing

the

sync

Trig/Gate

Output:

Var

Out

TTL

Out:

Sync

Power:

Input:

Out:

NOTE:

during
TTL

pulses>2.4V
input:>1.7V
400Q

Amplitude,

vernier;

50CI

Fan
maximum;

Amplitude
loads;

time,
greater

105-125VAC,

220-240VAC,

pulse

"Trigger"

compatible

RMS<1OMHz.

max.

out,40

sink,

less

than

input:

0.S-10V,

rise/fall

TTL

rise/fall

2.4V
16mA

than

2Onsec.

50/60

50i60

spacing

and

input,

peak>4Onsec

time

loads;

minimum;

2Onsec;

controls

"One-Shot"

DC

r10V.

adjustable

3Onsec;

sink,

time:

at O.8V

less

fan

maximum;

sync

Hz

(Optionat)

Hz

coupled

wide.

Input

64mA

than

out, 1O

pulse

not

active

modes.

logic

input:

Sine

wave

impedance:

via

single

impedande,

at

2Onsec.

lead

turn

O.gV

TTL

riseifall

time,

Operating

Size
Weight:

Tem

(WxHxD):

perature:

0"Cto50"C
(calibrated

F

32"

'(calibrate

10"

x

2.2tbs. (1

at 25"

to

122"

d

al

3" x7"

kg)

C

t55"

F

72" F*9"

(254

x 76

C).
F).
x

178mm).

INTRODUCTION

The

Global
Generator.
and

dependable

Specialties

lts

uncomplicated

service.

4001

Ultravariable

rugged.design

The

4oo1

offers

Pulse

and

these

Generator

quality

high

feaiures:

is

reliable

a

components

low

pulse

cost

ensure

long

Separate
A

Variable

5Q

Output

Pulse

TTL

Output

lmpedance

Width

Output

from

Range

DESCRIPTION:

The

Model

and

discrete

Shot

Mode),

minimum
frequency
wave

The
with

pulse
selectable

settings.
marked

with a push

Model

rise

output'

4001,

of

discriminator.

4001

and

form

Also

(Run,

primarily

component

gated

adjustments,

fall

There

oscillator

of

offers
times

are

lOonsec

on

the

Trigger,

O.5V

to 10V

from

lOOnsec

designed

circuits.

(Gate

the

4oo1

The

output

the

button.

two

Simultaneous

less

than

independent

to

lsec)

panel

are four

Gate

and

to lsec

pulse

as

a

lt

also

finds
Mode),
can

can

30nsec;

pulse

eliminating

pushbutton

One-Shot).

or

also

be

complemented

Independent

2Onsec

width

or

clock

application

prir"

serve

as

TTL

and

incompaiible

selectable

source,

as

stretcher (Tiigger

a missirig

Outputs

compatible

pulse

frequenJy
operatind

is

compatible

a

syste.

illse

or

converted

(TTL

leading-edge

spacing

sieppet
Mode).

detector

to

a

and

Variable)

controls

ano

mooe

(both

pulse

switches

with

lC

(One-

With

a

or a

square

Sync

width

LOCATION

AND

DESCRIPTION

OF

OPERATING

CONTROLS

Refer

referred

to Figure

to

NOTE

pushbutton

All

1

for

the location

throughout

the

switches

'13

12

FIGURE

of

all

text.

push-to-activate

are

1

*rrrorx l-E'|.-

;Ai.ffi:/n

[( | l]--

\lZ

11

1.

aoor

o^rt[.rc

Location

operating

switches.

2

eulse

34

-.-

-',

5,

GENERAToer

*

tY* ar rr!

1098

of

Operating

controls.

5

1.f.

-,

19,

out va.

These

,\-/..

ovr

Controls

numbers

/

will

be

POWER
MODE

Switch

NOTE

The

four

be

activated

RUN:
In

the

Run

all

timing

Switch

and

(2)

Mode

Switches(2)

at

a

time.

mode,

controls

SyncOut
TTL or

Var

Out

TTL

or

Var

our

LED

Indicator: (1)

are

mechanically

They

the 4OO1
are functional.

n

t-t

--l

FIGURE

are

designated

is

self-oscillating.

(See

aOpr3^.

n

t-l

l-'l

f-]

2.

Run

20

1 l*

n

f-l

RUN,

figure

nsec

n

f-l

l-]

Mode

and

interlocked

TRIG

All

external

allowing

ano

inputs

Z)

V Min.

z.a

{

:n

I

l-l

f-l

n

l-l

Complemented

only

ofr-sHor.

are

disconnected,

Run

l-l

Mode

Complemented

l-

one

switch

to

and

TRIG:

In

the Trig

for

each

and

Width

input

Spacing

trigger.

mode,

positive

Vernier

When

Vernier

are

the

4001

input

trigger.

controls.

the

mode

inactive. (See

Trig

TTL

or

Var

Oul

The

output

output

produce

outputs

The

switch.is

Figure

a synchronous positive

pulse

puise

in

the Trigger

B)

l0

width

is

initiated

ve'

V

Max

is

adjusted
by

mode,

i"v-Y'

going

byihe

posltiu"-.dge

the

pulse

the

rrrv '

v'vv

,,,n

f

tvtode

I

output

pulse

Width

of

Spacing

and

pulse

the

GATE:
In

the

Gate

applied gallng
!ai1

Both
lf

The

the Pulse

gating

the

complemented.

mode,

signal.

pulse

first

pulse

Spacing

(See

ONE-SHOT:
In

the

One-Shot

(-s)'when
Width

are

pressed,.

(11)

not

active. (See

and

mode,

Width

the

4991

The

in

the

and Pulse

ends

while

Figure

.Irloi

Var

Oul

With

of

the mode

initiates

Vernier

Figure

FIGURE

outputs

leading

train

3. Trig

produce

edge

ii

synchronized'witti

an

output

of

wiotn

is

controls

4).

2.4 V Min

I

Lead

Gate

FIGURE

Edge

Signai

switch

4.

Gate

is

an'output pulse.

controls.,Pulse

5)

Mode

the

present,

Mode

latched

Waveforms.

trains

gating

pulses

of

signal

teioing

program

the

the lait

Waveforms.

and

for

starts

edge

pulse

the

One-Shot

Pulse parameters

Spacing

and

Spacing

the

the

pulse

will

lcate

l;il'"

)

are

set

duration

output

of

gating

the

parameters.

train

be

pushbutton

by

the

Vernier

controls

of

the

pulse

signat.

pulse

one Shot

.Irlol

Var

out

---r,/

Pushbutton
oepressed

Figure

5.

One-Shot

Waveforms.

6

lone-snot

-l

SQUARE

when

now
This
functional.

WAVE: (3)

this

button
changes
divides

(See

is

depressed

state

with

every

the frequency

Figure

of

6)-

the

output

positive

the

signal

is

edge

Oy

two.

converted
of

the

All

to a

original

inputs

square

wave.

"piogrammed"

and

controls

are

The

output

waveform.

still

TTL

or

Var

out

COMPLEMENT:
When

this

button

complemented.

ONE-SHOT
See

MODE

AMPLITUDE
The

AMPLITUDE

connector

VAR
The

VAR

generator
3Onsec

from

OUT:

OUT BNc

output

and

(7)

(a)

is

All inputs

MODE

switches (2)

CONTROL:

control

0.5

to its

output

FIGURE

depressed

6. Run

and

controls

the

SWTTCH: (5)

for

details.

(6)

adjusts

Volts

to 10

connector

Volts.

provides

destination.

impedance

of

Mode

TTL

and

are

the

amplitude

a

The

VAR

50

ohms.

i-t_i-i_ro*r"o

and

Squared

Variable

still

functionat.

of

convenient

OUT

outputs

the vottage

means

signal

Run
Mode

Waveforms

are

automatically

1net.

has

Figure

at

the VAR

for

interconnecting

rise

a

and fall

2)

OUT BNC

time

the
of

TTL

OUT:

The

TTL

Output

fanout

are

SYNC
The
advance
Volts

of 40.

derived

OUT:

SYNC

of

and

(8)

BNC

Rise

from

the

(9)

OUT

BNC

the main

can

drive

connector

and

fall

same

times

is

fed

are

internal

source

connector produces

TTL

pulses.
loads.

output

10

by four

less

The

than

and

an

Sync

gates

TTL

20ns6c.

are

output

pulse

Both'TTL

svnchronous.

pulse

amplitude

parallel,

in

2onsec

is

providing

and'vAR

wide

and 2onsec

a minim

um

a TTL

ouT

ol 2.4

pulses

in

GATE\TRIG

The

GATE\TRIG

input

than

signal

2.4V

INPUT: (10)

can

input

be

a

terminals

sine

wave greater

are DC

coupled

than

1.7V

to

the

RMS

4001

or

a

internal

positive

circuitry.
pulse

The

greater

NOTE

WIDTH
The

limits
of
pulse

PULSE

The

in.seven

adjustment

SPACING
The
the limits
the
pulse

Amplitude

VERNTER:

WIDTH

the range

9f.

the

Vernier

width

WIDTH

PULSE

ranges'

VERNTER:

SPACE

of

vernier

spacing

adjustment.

over

the range

range

must

VERNIER

range

SWTTCH: (12)

WIDTH

When

the

VERNIER

insures

adjustment.

not

(11)

is

set

on

insures

switch

instrument

(13)

is

set

exceed

used

for

the PULSE

continuous

is

used

used

in

conjunction

range

used

for

the

pulse

on

continuous

tlOV.

continuous

wIDTH

adjustment

to

select
is

achieved.

continuous

spacing

adjustment

adjustment

sWtrcH.

output

with

adjustment

A

over

pulse

the

Width

sr,vitch.

ouer

n

the

pulse

of

stight

the

widths

of

stight

entire

overtap

entire

Vernier,

pulse

ou"ri"p

seven

width

from

spacing

between

at

seven

1oonsec

continuous

at

decades

the

both

ends

decades

between

both

of

to lsec

ends

of

of

PULSE

The

lsec

continuous

FLIP-UP
Easily

FUSE
The

SPACING

PULSE

in

seven

adjustment

LEG

raised

HOLDER:

post

fuse

SWTTCH: (1a)

WIDTH

ranges.

rM

or folded.

is

switch

(15)

:

(REAR

mounted

is

used

when

over

Elevates

used

the

PANEL)

to

the rear

to

select

in

conjunction

entire

the front

instrument

panel.

output

of

the

(see

pulse
wiin
range

generator

Figure

spacing

the

SpACI-ruG

is

achieved.

1

14).

i/2

from

vrnrutrn,

inches.

1ggnsec

to

To

check

(See

1.

2.

Figure

A

dual-trace

1740

or

A

TTl-level

out

the

Model

7).
oscilloscope,

equivalent)

frequency

CHECKING

4001

Pulse

100MHz

source.

(Global

Generator

OUT

bandwidth

Specialties

THE

the

minimum.

4OO1

following

Model

equipment

(Hewlett

2001

is

required.

packard

or

equivalent)

Model

3' Three

4.

A

Procedure
Plug
11SVAC,

LED

BNC-to

50

ohm

the 4001

60Hz

adjacent

BNC

cables

terminator.

into a power

or 210

to

the

to 230VAC,

switch

(Global

source

will

illuminate.

FIGURE

7.

Specialties

of

50

proper

the

to

6OHz)

Checkout

Model

voltage

Press

oB'3o

Y Fauln

loSo

Configuration.

PSA-2

and

in

the

n

frequency. (105

pOWrn

or equivalent)

to

ON

switch.

o@

o

o

oo
oo

The

Step
Set

the

A:

controls

on the

4001

as follows:

CONTROL

Power
Pulse

Pulse
Width
Spacing

Run
Square
Compl

Amplitude

SW

Width

Spacing
Vernier

Mode

Wave

SW

SW

SW

Vernier

SW

SW

Cntrl

POSITION

ON

100ns

100ns

(fully

Xl
X1

IN

Normal

Normal

10V

clockwise)

(fully

clockwise)

Out Position

Out Position

(fully

clockwise)

Step

B:
Connect
channel

one

"A"

BNC-Io-BNC

input.

cable

from

the 4001

TTL

OUT

BNC

to

the

oscilloscope

connect

BNC

to

the

Step

C:

Set

the

oscilloscope

with

a

sweep

observe

Step
Press

D:

in

the

the

second

oscilloscope

speed

that

the""syNc

COMP

of

Pulse

Amplitude

Rising

pulse

switch

BNC-Io-BNC

cabte

channel "B',

in

the

ALT

mode

50ns

per

division

purse

width

edge

by

on

rise

is

approximately

is

2.4V

of

the

approximately

the

4001.

from

the 4001

input.

to

trigger

or faster.

and

fat

times

minimum.

syNc

pulse

20ns.

on

the rising

are ress

2Ons.

leads

syNc

our

edges

than

the rising

of

2ons.

edge

the

of

,,61,,

input,

the TTL

observe

that

the""

Rising.

pulse

edge

by approximately

-

Width

1

gsec

_:l-l*_i

l<-

-:l
l.<-

Spacing

1

zsec

of

the

syNc

(

sPbcine r

width

FIGURE

8. Waveforms.

20ns.

sec

l

sec

10

pulse

(See

-->f

---->l

leads

Figure

n

the falling

g).

edge

of

the TTL

Step

E:

Return

the

COMP

switch

to it,s

normal

position.

Observe

that

the.....

NOTE:
some
result
inherent

the
exist

Step
Disconnect
Rotate

counterclockwise
Observe

overshoot

of

the

undampened

to

the waveform.

following

once

steps

proper

F:

the

the

AMPLITUDE

that

the.....

or ringing

impedance

BNC

position.

waveform
level.

Step

G:

Set

output

Connect

amplitude

the

50fJ

terminator

cable.

Rise

and

where

cable

pot

to

5V.

fall

times

may

have

transmission

The

same

the VAR

matching

from

the TTL

from

amplitude

at

the

of

been

line

form

OUT

is

its fully

decreases

oscilloscope

the

TTL

observed

effects

of

distortion

signal

is

output

of

used.

are less

on

the TTL

the

BNC

may

These

obtained.

our

and

connect

to VAR

clockwise position

from

its

initial

"A"

channel

than

signal.

cabl6

also

be

in

reflections

our.

to its

fuliy

1oV

input

in-line

20ns.

This

and is

not

evidence

will

value

to

with

is

a

during

cease

a

o.5V

the

BNC

to

NOTE
Many

oscilloscopes

terminator.
Observe

that

NOTE
VAR

OUT

observe

rise

that

the....

output
due

and

the""

have

a

5OO

amplitude

to impedance

fall

times

urse

are

width

and

terminator

is

now

that

2.5V

mismatching

less

than

30ns.

purse

spacing

1t_

may

and

no

are

be

used

that

ringing

longer

each

100ns

place

in

previously

lpfears.

xso/o.

of the

external

present

Step

H:

Rotate

lpsec

*15o/o

the

WIDTH

and

that

VERNIER

the

to its

pulse

uX10"

spacing

is

position.

Note

unchanged.

that

the

pulse

width

is

now

Press

Press
width
settings)

Return
STEP

Rotate

now
Change

in

the

in

the

of. 1.1psec

for

the

SQUARE

I:

the

SPACING

lusec

t15%.

PULSE

Observe....

A

STEP

J:

Observe....

pulse

A

coMp

switch

SQUARE

and

a

a

total

of 2.2p"s.

WAVE

VERNIER

SPACING

pulse

width

width

and

WAVE

pulse

and

and

pulse

and

pulse

and

note

the

waveform

switch.

spacing

Note

that

the resulting

of 1.1psec,(the.r*if

COMP

switches

to its "X10" position.

pULSE

WTDTH

spacing

spacing

of 1ps

to 1ps.

of lOpsec

inversion.

waveform

the wIDTH

to

their normat (OUT)

Note

that

the

+11o/o.

xlo/o.

has

positions.

pulse

pulse

a

and

rf".ing

spacing

is

Change

PULSE

Observe....

A

STEP

Rotate

K:

the

WIDTH

Observe....

A

change

the

Observe....

pulse

A

WTDTH

pulse

width

VERNIER

pulse

width

PULSE

width

and

and

and

wtDTH

and

pULSE

pulse

pulse
and

pulse

spacing

and

SPACING

spacing

pULSE

spacing

SPAC|NG

to 1Ops.

of 10ps

VERNIER

of

l0Oprsec

spActNG

lmsec

of

L2

r5%.

..X10...

to

t15%.

to 1oops.

+1|o/o.

STEP

L:

Observe....

pulse

A

width

and

pulse

spacing

of

100ps

xilo/o.

change
STEP

Rotate

the

M:

the

WIDTH

Observe....

A

change

PULSE

Observe....

pulse

A

STEP

Rotate

N:

the

WIDTH

Observe....

pulse

A

change

the

PULSE

VERNIER

pulse

width

wrDTH

width

VERNIER

width

PULSE

wtDTH

wtDTH

and

and

and

pulse

and

and

pULSE

and

and

SPAOING

pulse

spacing

pULSE

pulse

spacing

and

SPAOING

spacing

pULSE

spActNG

VERNIER

of lOmsec

spAcrNG

of 100mse

VERNIER

of

lOms

spActNG

to 1ms

to

+15"/o.

to 10ms.

c

x15o/o.

to

+So/o.

to

100ms.

+\-5%.

,'X1O'..

,,X1,,.

Observe....

pulse

A

STEP

Rotate

O:

the

WIDTH

Observe....

pulse

A

change

Press

Momentarily

in

the

PULSE

the

ONE-SHOT
push

Observe....

One

width

VERNIER

width

wrDTH

in

the

single

and

pulse

a

and

pulse

and

and

mode

white

switch.

oNE-sHor

1Oms pulse

spacing

SPAOING

spacing

pULSE

generated

is

of

spAcrNG

1_3

of 100ms

VERNIER

lsec

xlyo.

to

xl}o/o.

to

1ms.

pushbutton.

for

each

actuation

,,X10,'.

of

pushbutton.

the

STEP

Press

in

P:

the TRIG

mode

switch.

connect
lN

connector

a TTL-level,

Observe..

A 10ms pulse

STEP
Press

Q:
in

the

Observe....

Pulse

STEP
Turn

R:

off

the

checkout.

on

the 4001

GATE

bursts

power

i-.-

signal

l\z

pulse

occurring

Mode

switch.

occurring

and

disconnect

Gate/Trigger

(a)

L-

from

generator

at

at

a 2Hz

all

Pulse

Source

t")

a TTL-level

using

the

2Hz

rate.

rale.

cables.

This

frequency

BNC

a

cabte.

concludes

source

to

the 4oO1

oo

o

the

GATE\TRIG

pulse

generator

4001

Under

APPLICATIONS

The

4001

welcome
The

following

Pulse

addition

Generator

to

just

is

Test

Figure

g.

with

any lab.

a

sampling

Checking

its

many

of

the varied

Trigger

features

and

and

uses

t)

s'so

EE.

Gate

ease

of

the 4001.

(J

Modes.

of

operation

Al

V

oo
oo

make

it

a

L4

Missing-Pulse

Program

(.pnpl
time

The

present

state

to

out

to its

outputs

(missing)

until

Detector

the

4001

Sprsec.

full

of

the 4001

the

next

t'199::

Input

pulse

Each

10psec.

the

4001

trigger

4oor

width

time

the

remain

output

pulse

----l

for

1Opsec.

trigger

in

the

will

occurs.

t

/sec

Set

pulse

High

tim-e

out

(see

f*

the input

goes

State.

positive,-the

lf

to 1Opsec

Figure

_>1logsec

one

10).

I

I

I
I
I

trigger

ioot

of

the

trigger

and

then return

pulse

i.

repetition period

reset

putses

and

is not

to its

must

low

TRACING
The

4001

excellent

pulse

a
circuits

ANALYZING

By

substituting

microprocessor

(in

time

in

the

Note,
correct
microprocessor

TESTING

Proportional
ratio

low
simulate
The

4001

DIGITAL

and

a

digital

troubleshooting

train,

with

a

single

the LP-3

A

MICROPROCESSOR

your

th_e

the

One-Shot

"RUN"

however,

operation

mode.

that

is

that

RADIO

radio

frequency

the

radio

is

also

ideal

FIGURE

LOGIC

FLOW

logic

10.

probe

system.

one-shot,

quickly

and

4001

capability

some

not

you

CONTROL

control

for

the

of

mode)

or

microprocessors

assured.

are

using.

RECEIVERS

is

usually

modulation

transmitter

for

when

simulating

Missing

such

Just

or

the

find

pulse

as

the

use

the 4001

complement

the

defective

PROGRAM

microprocessor

stepping

at much-

through

reducdd

have

lf

in

doubt,

check

implemented

on a radio

testing

frequency

joystick

the

the low-irequency

Detector

Global

Application.

Specialties

as

a

of

eitherl

component.

system

iis

speed,

clock

microprogiam

oy

a minimum

the

data

by

sending

signal.-your

input

to

the

Lp-B

make

signal injector

Then

you

to inject

trace

give

can

through

either

uiing

sheet

tong

timing

clock

a variable

speed,

toi

4001

stages

tfre

mark-space

may

your

of

transmitter.

an

either

the

your

a

step

at

a

periods

below which

be

used

to

receiver.

15

AUDIO
The

used
waves
off

TESTING

4001

in

audio

consist

the

wave

again

testing

of

shape.

shows

its

versatility

to.

display

a fundamental

in

testing

a wioe

rangjof

frequency,

audio

amplifiers.

frequencies

and

a

series

Square

simulianeously.

of

odd

harmonics

waves

Square

to

square

are

Waveform

qr-

alLOKHOK

^

+'oKHoKLH

l:l"

'az'

qJ-

4.LHHLH

'"u

'-'Ll-

t-

LF

Gain LF

oK

HOKLOKH

OK

H H
H

oK

OK

OKOKHOKLL

oK H

OK H

Gain

OK

L

L

l-{F

Gain HF

oK

OK H

L
L

Gain

OK

L

H

OK

OK

Damping

oK

H

H

H

H

OK

L

riroKoK*oKL

'Sharp

L
LL = Very
H

OK= Suitable

Peaked

=Low

=

High
Proper

Cutoff

Low

or

TABLE

For

an

amplifier

from

0.1F

The

traditional

high

frequency

connect
output

40

output

on

and

SOspeakers.

of amplifiers
amplifier
will

not

be

1.

Typical

to 10F

test

end.

the

4001

the

scope.

under

test.

in

saturation.

Square

to reproduce

where

"F"

wave

a

is

the

frequencies

(See

Table

to

the

amplifier

Table

lt

with

Testing

2

shows

also

liststhe

different

at 1OdB

This

level

Patterns

square

wave

fundamental

are

SOHz

for

1)
under

power

test

the

table

output

voltage

ratings.

below

is

approximately

16

and

an Interpretation

it

must

have

frequency

the low

as

of

maximum

frequency

shown

power

in

and

level

bhoose

output

2lS

of

for
the rating

a flat

of

the

square

test

Figure

12

voltage

lOdB

ensures

the

full

of These

frequency

Shapes.

response

wave.

and

1gKHz

and

observe

relationships

below

closest

power

the maximum

to

the

that

the

output.

for

the

the
for

amplifier

Amp

o

o

oo

oo

Under Test

FIGURE

11.

Power

8(l

1W

5W
10w
20w

50w

100

w

Amplifier

4J)

2W

10w
20w

40w

w

(RMS)

E2

8V

,40

80v

160

400
800

Ratings

100

200 w

Frequency

Full

Output

2.8V

v

6.3 V

8.9

V

12.6

v

20.0

v

28.0 V

Response

Output

l0

Max

V

V

v

(RMS)

dB Below

Output

2.3

V

5.2V

7.3

V

10.3

V

16.3

V

23.1V

Test.

TABLE

2.

Power/Output

L7

Relationships

TESTING

lf

a

transmission

reflections
lines'
circuited,

Equipment
1-4001
1-50Q
1-oscilloscope
1-passive
1-50Q

1-adaptor
1-BNC

TRANSMISSION

will

occur.

Using

your

and

with

Pulse

coaxial

termination

T

Generator

cable

probe
banana

connector

LINES

line

is

not

terminated

phenomenon

This

4001 you

some

to

10:1

female-BNC

can

simple

be

tested(=1Om

at

the

can

find

out

if

the

calculations,

long)

male

far

end

be

used

cable

you

its

by

to find

under

can find

characteristic

faults
test is
the lengih

on

transmission

open,

of

or

tn"

oo

o

o

oa
oo

impedance,

short

cable.

Set

up

the

equipment

Set

the

4001

Amplitude-6.5V

Pulse
Pulse

Square
(use

Set

Vertical

Input
Trig
Trig

Trig

Sweep

width
space

Wave-engaged l

VAR.

the

scope

Display-

Coupling-DC
Source-lnt
Mode-Audio
Level-Adjusted

Time-2psec/cm

to:

time-Sprsec

time-S

output

to:

1 V/cm

Banana Female

FIGURE

as

shown

l-rsec

connector)

12.

in

Figure

Passive

10:l

Transmission

12.

Probe

Line

Test

1_8

With

the far

final

amplitude

cable

reflection

generator
of

itself,

takes

output,

the 4001

end

open,

is

reached

the

output
place

it

tells

appears.

the

scope

in

two

is

at nominal

at

the

open

the 4001

should

steps.

value

end.

When

that

the

display

At

the

moment

(midscale

this

far

end is

a

signal

as

the

dots

B

reflection

open,

shown

4001

on

Figure

feeds

and

the

in

Figure

meets

13)

back

to

open

13.

The

the

50e

of

the

and

a

pulse

the

circuii voltage

Now-change

13.

The

reach

the

reflection

about

the

length

0.7c

signal

is

,=ffC

Solving

-_-2

2=

Remember

9!fn

13C'

drops

clrcuiting

After

to
"almost"zero.
zero,

which

Terminating

Matching

completely
at the

generator

the Time/Div

time

between

open

takes

(c=3x

returns

calculated

2l

for "L"

t_0.7cT

(0.

7)

that

12Onsec

zero.

The

The

can

the

the

far

eliminates

points

end

and return.

12Onsec.

108

m/sec).

as

a reflection.

as shown:

where "T,,

get:

we

x(3x/08/

the

accuracy

the

end

of

the

4001
cable
cable

be

noticed

far

end

end

of

load
load

with

the

reflections

end

of the

of the

"A"

scope
and "B"

For

lt is

known

lf

the

Using

is

TIME

ms?c)

2

of

this result

the

cable

"knows"

influences

influences

from

the

5OO

results

cable

with

from

cable.

to 0.1psec

is

example,

that

ihe velocity

cable

has

the time

for

Reflection

x(

120

xf2'sec)

is

results

that its

this

this

offset

level

in

the waveform(shown

resistor

a

the

far

and

observe

the

time

it

takes

assume

that

of

a

the length

observed

determined

in

the waveform

output
ideal
ideal

is

short
behavior
behavior

with

respect

equal

to

end, iesulting

the

signal

for

the miising

(as

in

Figure

signat

"L'iit

on

by

and

itre

in

in

I

coaxial

will

take 2uo.7c

the

scope

the Time-Base

shown

circuited

and

to

zero

zero

the

in

in

Figure
and
means

means

start.

Figure

characteiistic

perfect

a

in

Figure

sigriat

tsny

lne

cable

the

cable

accuracy.

138

the voltage

"almost,,

1gD).

impedance

square

wave

to

is

before

and

L9

"u"Y-

2rceclDiv

<->

-1

\A

I

A

L

L

-

FIGURE

13.

scope

waveform

patterns-Transmission

0.1psec/Div

ft-

-B

Line

Testing.

<--+

t

I

FIGURE

13A.

'olts

0

scope

-A

waveform

patterns-Tnansmission

20

Line

Testing.

2rcec/Div

€

0VcIts

FIGURE

138.

r

scope

tr

J\

waveform

0.'l6ec/Div

,E

patterns-Transmission

€

J

Line

Testing.

0Vr

FIGURE

13c.

tlts

.

-:t F

scope

waveform

-

2nd

\- f

1r

;t

Reflectior

tl

tl

I.;;f.T

Re

rfleclion

?
t

patterns-Transmission

2L

tl

Line

Testing.

psec/Div

2

<+

FIGURE

CIRCUIT

Figure

pulse

The

two

to

the "A"

DESCRIPTION

15

shows

generator

monostable

input

0V(

tts

13D.

Scope

the

schematic

is

the integrated

multi-vibrators

of

the

second

Waveform

diagram

circuit

and

vice_versa.

of

A-1

are

cross-coupled

r

I

't

J

Patterns-Transmission

the

4001

dual

Pulse

monostable

Generator.

from

the "e,,

Line

multi-vib

output

Testing.

The

heart

rator

#74123.

of

the

of

the

first

Anti-Latch

The

cross-coupled

high'

for

he

is

!9t

R30

and

R28

and

As

long
emitter
negative

lf

the

and

starts
recover
low,

turning

Circuit

However,

oscillator

gated

R32

R29.

as

of

Q3 will

than

oscillator

to

from

Operation

monostabled

since

to

latch-up.

on

if

a1

bias

the

These

41

oscillates,

be half

its

base,

stops,
conduct.
the latch

off

the

hook

the

coupling

The

fails

to

osciilate.

base

of

Q3 to 1/2Vcc

resistors

the

and

b-o!h

Q3

condition,

circuit

one

e3

Qs

and

are

of

high

Q

is

go

Q4 turn

and

multi-vibrator

between

froblem

Transistors

connected

the

the "B"

outputs

Q

voltage.

tut

off.

high.

Q3 emitter

on

input

restarting

circuits

the

is

overcome

while

to

will

This

and

latch,

of At-n goes

the

22

as

two

circuits

by

and

Q3

the

emitter

the

output

e

be

high.

holds

voltage

dis;harging

oscillator.

long

as

purely

ii

a special

form

e4

of

e3

of

the

The

average

the

emitter

rises

above

Cre.

high,

,,8,,

their

triggering
a hook

is

nt-t

of

forcing

inputs

Dc

it

controiled

ano 41-8.

voltage

more

e3

its

base

ns

eB and

e

are

possible

is

cir:cuit

oscillator.

by

at

the

voltage

e4

of 41_A

Timing
The
through
The
Spacing
the

Circuit

timing

R10.

timing

Vernier,

same

Operation

of

A1-A

resistor

Jor

as

A1-A.

is

controlled

R9

or

R10

each

of

and

the

bythe

the

pulse

selection

pots

trim
spacing

R1

switch

of

capacitors

and R7

positions.

C1

throughcT

set

the range

41-B

for

timing

and

R1

Rg,

the

system

is

Mode
Run

ln

go

Trig.

In
the.A1-A
emitter

Gate

ln

volt.line

oscillator

To gate

Switch

Position

the run

high,

enabling

Position:

the

trig'

goes

Position:

gate

the

through
the

mode,

position,

to

mode.

Q5 causes
will

continue

oscillator

One-Shot
The
and

completes

Position:

pushbutton
R44.

This

Operation

53 removes

the

54

ground,

high

position,

disabling

and

55

a 1K

oscillator

A5-A

to run

go

to

while

its

fires

manuaily

?

the

oscillator.

applies

5 volts

41-A.

A5-A

resistor

on,

ties

a

low,

the

final

J-K

Flip

low,

both

(R33)

positive

A5-B

gate

cycle.

Flop (A2-A)

simurates

5 volts

to

from

R31,

the

Q4

When a positive

A5-B

goes

the

base

turning

voltage

go

to

high,

signal

high,

of

Q3 and

off

is

applied

and'the

present.

is

whose

the inpui

of

a

input

to A5-B

saturates

trigger

triggeiing

the "8"

Q3 and insuring

to

J4, which

oscillator

When

output

triggei

the

turns

purse.

causing

and

shorts

pulse

41-B

input

that

to

gate

off

the

output

the,,B',

appears

at

on.'

of A1-A

41-A

via

start.

is

e5

to

is in

emitter{ollowed

The

oscillator

removed,

through

input

J4,

the

the

the

CR2

to

of

e5

S

Output

TTL
The
output

Var

Q2

base
high
Q1 and

The

Circuit

Out:

TTL

output

drive

Out:

is

the

final

is

tied

through

cR1

output

protection.

Operation

is

derived

to 40

TTL

driver

to

the

collector

a

330Q

provide

also

is

fed

via

from

loads.

for

the VAR

of

resistor

active

a 47o

resistor, providing

four

two-input

output.

The

Q1 through

and

is

also

pulldown

NAND gates.

collector

a 47Q

shunted

for

resistor.

to

the

output

the

23

of

Q2

The

ground

when

correct

A

4.7?

resistor

is

tied

to Vcc

collector

by

a 2.SK

it

is

low.

impedance

and

limits

while

of

e1

a amptitude

is

the

the

tied

pot.

overload

Sync.

The
A,A3-8,A4-A)
there

neither

position
simultaneous

Out:

inputs

will

be

input

of

the

of

A4-D

and

a brief

of

complement

with

are

connected

R39,C19.

interval

A2-D.will

the

be high,

falling

to

The

output

before

switch,

edge

the

and

the first

of

a timing

of n-s-o

signal

sJa

the

reaches

sync

trinsition

sync

chain

is

normally

wilr

pulse

consisting

te

generated.

be

of

ine

or lsnsec

of

high.

ortpi,t

output

after

3 TTL

When

of

witieither

gates

it

A4-A

Depending

in

it.

(AO-

goes

which

on

be

low,

the

Power

A
switch

RECALIB

Fuse

The
fuse'
should

1.

2'

3. lnsert
NOTE:

replacement

Case

To

14).

recess

Supply:

plug-in

type

direcily

RATION

Replacement

4o01

The

Disconnect
Use

Disassembly

open

Remove

of

protected

is

fuse

become

a

screwdriver

fuse

New

fuses

of

the

case,

the

each

power
to

supply

the regulators.

PROCEDURES

by

is

accessible

necessary,

the

with

the fuse

of

power

AC

to remove

correct

seldom

and

Assembly

turn

the

pads

four

the

four

without

supplies

a type

at

the rear

follow

cord.

the fuse

rating.

fail

without

correcting

unit

upside

from

feet.

3AG

this

plastic

ihe

raw

slo

panel

procedure:

cap

malfunction

down

plus

DC,

blo 114

of

the'unit.

holding

problem

the

with

the

feet.

Remou.

amp

of

(+)

the fuse

the instrument.

rubber

(-)

and

(1/8

may

through

amp

lf

replacement

and

cause

feet

tn"

;;;";;

for

230V)

remove

further

facing

power

the

25oV

of

the fuse

the fuse.

Repeated

damage.

(see

up

i;"m

the

center

power

Figure

Note

The

flip-up

Carefully

case,

Position
Do

not

separate

lower

the rubber

overtighten

leg

the

will

automatically

the

two

case

bottom

feet

as

screws.

come

halves

illustraied

Instail

and

of

the

guide

and

the

free

with

case

the front

screw

four

rubber

24

the

front

feet.

and recalibrate

and rear

the

two

pads.

the

panels

halves

unit.

into

of

the

To

close

their

case

the

slots.

together.

Recalibration
Bgfore
of

being

tests

and
outlined
e19ugh
of

liability.

experience

Procedure

shipped, your

calibration.

below

lf

carefully.

in

Do

ihe

4001

recalibration

use

not

attempt

of an

Pulse

Generator

becomes

oscilloscope.

went

necessary,

to recalibrate

this'unit

See

warranty

through

a very

f|llow

unlessyou

(back

thorough

series

the instructions

have

cover)

for

limits

During

1.

2'

Figure

this recalibration

Disconnect
Remove

14)

all

the

cabres

top

case

procedure,
from

the

half

as

refer

40-01.

outlined

to Figure

1,

control

Remove power

in

the

Case

Disassemory

Locations:

cord from

prug.

wail

piocboure.

(See

3'

Reconnect

FIGURE

power

and

14.

Case

connect

the

Fuse Holder

And

Llne Cord

Disassembly

oscilloscope

25

to

and

Assembly

the

TTL

ouT

BNC

on

the 4001.

4.

Set

up

4001

front

panel

as follows:

5. Adjust

6.

Adjust

7'

Switch

B.

Adjust

9.

Adjust

10'

Switch

11.

Adjust

12.

Adjust

13'

Switch

14.

Adjust

15.

Adjust

16'

Switch

17.

Adjust

18.

Adjust

19'

Switch

20.

Adjust

21.

Adjust

22'

Switch

23.

Adjust

24.

Adjust
25'.Turn
outlined

off

in

R17

for

R7

for

a

PULSE

R16

for

R6

for a pulse

PULSE

R15

for

R5

for

PULSE

R14

for a pulse

R4

for a pulse

PULSE

R13

for

R3

for

PULSE

R12

for

R2

for

PULSE

R11

for

R1

for

power,

the

Case

CONTROL
Power (1)

Mode
Pulse

Pulse
Space
Width

Square
Comptement

pulse

a

pulse

WIDTH

pulse

a

width

spacing

and PULSE

width

spacing

WIDTH

pulse

a

pulse

a

WIDTH

and-PULdE

width

spacing

anO

width

spacing

WIDTH

pulse

a

pulse

a

WIDTH

pulse

a

pulse

a

WIDTH

pulse

a

pulse

a

ano

width

spacing

ano

width

spacing

ano

width

spacing

disconnect

Reassembly

(2)

Width

Spacing

Vernier (10)

Vernier

Wave (3)

of 10Ons

of 10Ons

SPACING

of 1ps

+So/o.

of 1ps

SPACING

of

10ps

of 16ps

pUtSE

SPACING

of 100ps

of lObps

putsr

SpnCtruG

of 1ms

of 1ms

pUtSE

SPACING

of 1Oms

of

lOms

putsE

SPACING

of lOOms

of 100ms

ail

cables

proceclure.

(12)

Sw

SW

(11)

(4)

r5o/o.

xlo/o.

xlo/o.

5%.

5%.

xlo/o.

l:lo/o.

xlo/o.

xlo/o.

xl"/o.

+So/o.
+5o/o.

from

(14)

controls

controls

controls

controls

controls

controls

xlo/o.

the 4001,

POSITION

ON
RUN

100ns
100ns

X1

X1

OUT

OUT

to

their

to their

to

their

to

their

to

their

to

their

positions.

1ps

1oprs positions.

100ps positions.

positions.

1ms

1Oms

100ms

and reassemblethe

positions.

positions

case

as

This

completes

recalibration

of

the

4001.

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

26

- -'1

r-

-lib^ |

o

ir.

IO]+

L - -T-J

o

I

t:

I

t"

!

+r

{rt-

vt

I
t
t

i

t

8

t'.

#

trF

t;

ii:

r

rF

)

o

r

I

L

I

t-

lc

|r

l3

c

I

I
_l
rl

\l

(

I

I

t
I

t

rt

!l

t0

t

I

{Hlr

m

''l

rl

tit

I

I

I

tt

I

I

J

ll'

I

)

t

t

ll

I

l(

:

Il

i9

o

t

H

g:

T:

i:

Eei

i

6r

;

tJ:JrJrJU!li

t
!

t[tlililrlif:

I

:;

-i

d
I

t;

rl

a

lr

r!

t

.g

.=

E

o

Y

iu
ir

tv

i:

i {q

r 1!

at

r

!

I

l3

>l

s{

It

rf

!t

uJ

ft

r

y!

o

i:

I

1

L--J

i

l;

g.

i:

i

!*

tr

iltltlilil!

g5

t!

c

..--{

ll\

ttr

iii

;l

I

I

I

o

I
t

i

c5l--r,,

I