HP 546A Logic Pulser Operating And Service Manual

OPERATING

AND

SERVICE

MANUAL

LOGIC

PULSER

546A

Flio-

HEWLETT

PACKARD

HEWLETT-PACKARD

SALES

AND

SERVICE

OFFICES

To

obtain

servicing information and

order

replacement parts,

contact

the

nearest Hewlett-Packard Sales and

Service Office in

HP

Catalog,orcontact

the

nearest regional office.

IN

THE

UNITED

STATES:

CALIFORNIA

3939 Lankershim Blvd.
North Hollywood

91604

GEORGIA

P.O. Box

28234

450

Interstate North

Atlanta

30328

ILLINOIS

5500

Howard

Street

Skokie

60076

NEW

JERSEY

W.

120

Century Road

Paramus

07652

IN

CANADA:

QUEBEC

Hewlett-Packard (Canada) Ltd.
275 Hymus Blvd.
Pointe Claire

IN

EUROPE:

SWITZERLAND

Hewlett-Packard (Schweiz) AG
RueduBois-du-Lan 7
P.O. Box 85
CH-1217 Meyrin 2 Geneva

IN

AFRICA,

ASIA,

AND

AUSTRALIA:

Hewlett-Packard

Intercontinental
3200 Hillview Ave.
Palo Alto, California

94304

IN

CENTRAL

AND

SOUTH

AMERICA:

Hewlett-Packard

Intercontinental
3200 Hillview Ave.
Palo Alto, California

94304

Hewlett-Packard

Company

certifies

that

this

instrument

met

its

published

specifications

at the time

of

shipment

from the factory.

Hewlett-Packard

Company

further

certifies that its

calibration

measure-

ments are traceable to the

United

States

National

BureauofStandards,tothe

extent

allowedbythe

Bureau's

calibration

facility,

and

to the

calibration

facilitiesofother

International

Standards Organi-

zation members.

WARRANTY AND ASSISTANCE

This

Hewlett-Packard

productiswarranted against defects in materials and

workmanship

for

a period

of

one

year

from the dateofshipment.

Hewlett-Packard

will, at its

option,

repairorreplace

products

which

prove

to be defective

during

the

warranty

period provided

they

are returned to

Hewlett-Packard,

and prOVided the preventive

maintenance

proceduresinthis

manual are followed. Repairs necessitated

by misuse

of

the

product

are

not

covered

by

this

warranty.

NO

OTHER

WARRANTIES ARE EXPRESSED

OR IMPLIED,

INCLUDING,

BUT

NOT

LIMITED

TO,

THE

IMPLIED WARRANTIES OF

MERCHANT-

ABILITY

AND

FITNESS FOR A

PARTICULAR

PURPOSE.

HEWLETT-PACKARDISNOT

LIABLE

FOR

CONSEQUENTIAL

DAMAGES.

Service

contractsorcustomer

assistance agreements are available

for

Hewlett-Packard

products.

For

any

assistance,

contact

your

nearest

Hewlett-Packard

Sales and

Service

Office. Addresses are

pro-

vided

at the backofthis manual.

010000-A-237

This

change

supersedes

all

earlier

dated

changes.

***

Make

all

corrections

listed

under

ERRATA

before

making

other

changes.

********************

*

INSTRUMENT:

546A

*

*

Logic

Pulser

Operating

and *

*

Service

Manual *

* *

***

Check

following

table

for

your

instrument's

serial

prefix,

series

number,

or

date

code

and

make

listed

change(s)

to

manual.

*
*

SERIAL

PREFIX:

*

*

DATE

PRINTED:

*

HP

PART

NO:

*

MICROFICHE

NO:

* ********

1644

MAY

1977
00546-90005
00546-90006

*******

*

*
*

*.

*
*

* ***

n

INDICATES

NEWORREVISED

ITEM

>

INDICATES

ACTIONTOBE

TAKEN

00546-60100 ...1

Series

1732

SERIAL

PREFIX,

MANUAL

SERIES

NUMBER

OR

DATE

CODE

CHANGE(S)

thru

4

thru

5

thru

6

MANUAL

CHANGE(S)

..••1

thru

3

01A2132.
01A2312.
02A2312.

00546-60100 .

Series

2012

**
**

**

SERIAL

PREFIX,

**

SERIES

NUMBER

**

OR

DATE

CODE

**--------------------

**
**
**
**
**

...••

1,2

00546-60100

Series

2008

(C5460SX) 1=6809,6812/2=8886E/3=9712E/4=12414,12007/5=14585

Flin-

HEWLETT

PACKARD

MANUAL

CHANGES

MODEL

546A

(00546-90005)

Page

i

Insert

this

Warning

after

the

Certification/Warranty

and

Assistance

which

is

the

inside

front

cover.

WARNING

This

product

should

be

connected

to

a power

source

that

is.

sufficiently

isolated

from

the

main

supply

to

prevent

the

risk

of

electric

shock.

To

further

reduce

the

risk

of

electric

shock,

refer

to

the

service

manual

for

the

equipment

under

test

(when

applicable)

and

follow

the

manufacturer's

service

and

safety

precautions

particularly

when

voltages

exceeding

30

VRMSor50

VDC

are

present.

i

#ERRATA
Page

30,

Figure

14,

NOTE*:

>Change

note

to

read

"MP3

NOT

USEDINALL

PULSERS.

SEE

PAGE

33."

Page 33,

Table

6,

Replaceable

Parts:

>Change

HP

part

number

for

A1R4

to

0686-1325.

Page 36,

Figure

16,

A1

Schematic

Diagram:

>Add

two

short

parallel

arrows

adjacent

to

DS1

to

indicate

a

light

emitting

diode.

>Change

NOTE3to

"U1

PIN

12

MAYBECONNECTEDTOCOMMONINSOME

PULSERS".

>Add

"+"

symbol

adjacent

to

top

terminal

of

C2

to

indicate

the

positive

side

of.

the

electrolytic

capacitor

for

C2.

Page 32,

Table

6,

Replaceable

Parts:

>Change

A1MP1

from 00546-20202

to

0570-0662

in

HP

Part

Number

and Mfr.

Part

Number

columns.

CHANGE

1 (00546-60003

Series

1732)

NOTE

--

The

circuit

board

is

changed

mechanically

to

incorporate

an improved

push

switch.

The

new

00546-60003

circuit

board

is

electrically

identical

to

the

00546-60002

SERIES

1644

circuit

board.

CHANGE1(cont'd)
Page

30,

Figure

14,

Pulser

Disassembled:

>Change

MP4toMP14.

>Change

MP5toMP15.

>Change

MP8toMP9.

Page

32,

Table

6-1,

Replaceable

Parts:

>Change

A1

part

number from 00546-60002

to

00546-60003

for

HP

& Mfr.

Part

No.

>Change

A1

Series

number from 1644

to

1732.

Page 33,

Table

6,

A1

(00546-60100)

Replaceable

Parts:

>Change

A1S1

from 00546-00001

to

0546-00002

in

HP

and Mfr.

Part

Number

columns.

Page

33,

Table

6,

Miscellaneous

Parts:

>Change

MP4toMP14

and

Part

Number

in

HP

and Mfr. columns from 00546-20201

to

00546-20202.

>Change

MP5toMP15

and

Part

Number

in

HP

and Mfr. columns from 00545-20203

to

00545-20205.

>Change

MP8toMP9

and

Part

Number

in

HP

and Mfr. columns from 00546-40001

to

00546-40004.

>Add

MP10;

00546-40003;

RETAINER-SWITCH,

BLK

PLASTIC;

28480; 00546-40003.

>Add

MP11;

0624-0340; 2;

SCREW-SELF

TAPPING

0-42

(MP10

MTG);

28480;

0624-0340.

>Add

MP12;

7120-5268;

NAMEPLATE;

28480; 7120-5268

(BOTTOM

HALF).

>Add

MP13;

7120-5274;

LABEL-OPERATING:

28480; 7120-5274

(TOP

HALF).

-

1-

I

CHANGE1(cont'd)
Page 36,

Figure

16,

A1

Schematic

Diagram:

>Change

HP

Part

Number

for

A1

from 00546-60002

to

00546-60003

SERIES

1732.

>Add

to

arrows

by

DS1

to

indicate

a

LED.

>Change

"U1

PIN

2"

in

NOTE3to

U1

PIN

12.

CHANGE

2 (00546-60003

Series

200B)

Page 32,

Table

6,

Replaceable

Parts:

>Change

A1

from

series

1732

to

200B.

>Add

A1CB;

0160-0576;

CAPACITOR

FXD

0.1UF

20%

50VDC

CER;

26654;

2130BR050R104M.

Page 36,

Figure

16,

A1

Schematic

Diagram:

>Change

A1

series

number from 1732

to

200B.

>Add

0.1u

capacitor

CB

across

power

supply

input

between

emitter

of

Q3

and

circuit

board

common.

CHANGE

3 (00546-60003

Series

2012)

Page

32,

Table

6,

Replaceable

Parts:

>Change

Al

from

series

2008

to

2012.

>Change

A1C1

(0160-4422)

to

0160-5238;

CAPACITOR-FXD

.B2UF

20%

50VDC

DISC

CER.

Page 36,

Figure

16,

Al

Schematic

Diagram:

>ChangeAl

Series

from 2008

to

2016.

>Change

A1Cl

from

1uf

to

.82uf.

I

HCHANGE

4

Title

Page

SERIES

NUMBERS

NOT

LISTED:

>Change

to

read

as

follows:

For

Logic

Pulsers

with

series

numbers

higher

than

1644,

or

with

condensed

Series

Numbers

provided

on

the

Date

Code

label,

a

MANUAL

CHANGES

sheet

is

included

with

this

manual. For

series

numbers below 1644,

refer

to

the

Backdating

paragraph

in

this

manual.

Page 1

SERIES

NUMBER:

>Delete

the

paragraph

under

"SERIES

NUMBER".

>Replace

with

the

following

information:

SERIES/DATE

CODE

This

product

is

identified

byaSERIES

CODE

and

DATE

CODE,

located

on a

vinyl

label

affixed

to

the

inside

of

either

the

top

or

bottom

of

the

pulser

shell.

The

Series/Date

Code

format

used

in

all

logic

probes

is

as

follows:

"01A2132"

The

first

two

digits

represent

a

condensed

Series

Code.

When

a change

occurs

to

any model

of

HP

logic

probe

family

which

affects

the

schematic,

parts

list,

or

specifications,

the

condensed

SERIES

CODEisincremented

by

one.

The

letter

"A"

designates

the

country

of

origin;

"A"

indicates

USA.

I

CHANGE4(cont'd)

The

last

four

digits

represent

the

Date Code.

The

Date

Code

identifies

the

date-of-manufacture

for

the

pulser.

The

first

two

digits

indicate

the

year

the

product

was

manufactured;

the

last

two

digits

indicate

the

week

of

that

year.

Datecoding

originated

in

the

year

1960,

at

which

time

the

code

"00"

was used

for

the

first

two

digits

to

represent

1960. Every

year

after

1960

the

code

was

incremented

by

one;

for

example,

the

Date

Code

"2012"

indicates

the

product

was

manufactured

in

the

12th

week

of

the

year

1980

(1960+20).

Your

pulser

will

have

either

a

four-digit

Series

Number

stamped

on

the

printed

circuit

board

or

a condensed

Series

Code,

prefixing

the

Date

Code

on

a

vinyl

label

affixed

to

the

inside

of

the

pulser

shell.

WHICH

CHANGES

APPLYTOYOUR

LOGIC

PULSER?

There

isaSERIES/DATE

CODE

number

listed

on

the

cover

of

the

MANUAL

CHANGES

sheet.

As

changes

are

made,

the

condensed

Series

Code

is

incremented

by

one.

Make

all

changes

to

your manual

for

Series

Codes

less

than

or

equal

t(

your

pulser

Series/Date

Code.

CHANGE

5

Page 32 and 33,

Table

6.

Al

(00546-60003)

Replaceable

Parts:

>Change

C6

from 0160-4343

(.lUF)

to

0180-0291

lUF

+-10%

35

VDC

TA.

>Change

R3

from 0698-7284

(lOOK)

to

0698-7260

10K

1%

.05WFTC=O+-100.

Page 36,

Figure

16.

Al

Logic

Pulser

Assembly

Schematic

Diagram:

>Change

the

value

for

C6

from .1UF

to

lUF.

>Change

the

value

for

R3

from

lOOKto10K.

IICHANGE

6

On

the

Title

page,

Change

the

Configuration

Code

from

01Ato02A.

-

..

_------

Figure1.HP

546A

Logic

Pulser

SCOPE

OF

MANUAL

This manual provides

operating

and service

information

for

the

Hewlett-Packard

Model

546A

Logic

Pulser (Figure 1). The

information

includes a descriptionofthe

Logic Pulser, accessories available,

specifications, unpacking,

operating

characteristics,

operating

procedures, applications, theory

of

operation,

maintenance, replaceable parts, and a schematic diagram.

DESCRIPTION

The

HP

546A

Logic Pulserisa

hand-held

logic

node

stimulator

used

for

injecting

controlled

pulses

into

digital logic circuits. The electronics are housed in a

hand-held

probe.

Automatic

pulse

control

is

prov'ided

for

TTL,

OTL,

RTL,

HTL,

MaS,

and

CMOS

logic. Pulse

amplitude

depends

on

the logic

supply voltage (3-18V)

whichisalso

the

supply voltage

for

the Logic Pulser. Pulse

current

and pulse

width

depends on the load

being

pulsed. The

frequency

and

number

of

pulses generated by the

pulser

is

controlled

by

operationofa push-slide switchonthe pulser

probe.

A flashing

LED

indicator

located in the

tip

indicates

the

output

mode.

Refer

to

Table 1

for

Logic Pulser specifications and to

Figure 2

for

accessories available.

SERIES

NUMBER

The Logic Pulser does

not

have a serial

number.Itdoes have a

four

digit

series

number,

which

is

stamped on the

printed

circuit

board. Refer to this

number

and the

circuit

board part

number

in any

correspondence

pertainingtomaintenance.

Table1.Specifications

Output'

Logic

Family Power Supply Voltage

Output

Current

Pulse

Width

Typical

Output

Voltage

2

High

Low

TTL

5.0 ±10%

vdc

:5.650

mA

?0.5

j.ls

?3

vdc

:5.0.8

Vdc

CMOS

3-18

vdc

:5.100

mA

?5

j.ls

?Vsupply-1vdc

:5.0.5

vdc

15V

maximum

Tip

Output

Overload

Protection:

Power Supply

Input

Protection:

±25V

for

one

minute

±25V

for

one

minute

Short

Circuit

Protection:

Time

Base

Accuracy:

±10%

Continuous

Operating

Temperature:

0-55°C

Impedance:

<2 ohms active;

Accessory

Included:

Ground

Cable

>1

megohm

off

Assembly, HP Part No. 00545-60105

Power Supply

Requirements:

Accessory

Available:

Tip Set,

HP

Operating

Voltage Range:

Part No. 00545-60104

TTL

.................

5±

10%

vdc

CMOS

................

3-18

vdc

Operating

Current:

:5.35

mA

'Specifications

apply

over

stated

operating

voltages

and

temperatures

for

all

pulse

output

modes.

2With

ground

clip

attached

near

load.

Tip

Kit:

00545-60104

10526-60002

Multi-Pin Stimulus

Kit

Figure2.546A

Logic

Pulser Accessories

Available

UNPACKING

If

the

shipping

packageisdamaged,

ask

that

the

carrier's agent

be

present

when

the package

is

opened.

Inspect

the

Logic Pulser

for

obvious

physical damage (dents, scratches, etc.). If

the

Logic

Pulser

is

damaged

or

fails

to

meet

specifications,

notify

carrier and nearest Hewlett-Packard

Sales

and Service

office

immediately.

(Sales

and Service offices are listedatthe

backofthis manual.) Re-

tain

shipping

package and packaging material

for

carrier's inspection. The

Sales

and Service

office

will

arrange

for

replacement

of

your

Logic Pulser

without

waiting

for

claim against carriertobe

settled.

POWER

SUPPLY

The

power

leads are

connected

to

the

power

supplyofthe

logic

being

pulsed(3to

18V). Reverse

polarity

and excess voltage

protection

are

provided.

The red

power

leadisconnectedtothe

positive

side

of

the

power

supply.

OUTPUT

GROUND

CABLE

A

connector

for

the

ground

cable

providedislocatedatthe

tipofthe

Logic Pulser.

When

maximum

current

outputisdesired,

use

the

ground

cable supplied

with

the

Pulsertomake

the

common

return

path

as

shortaspossible.

Current

pulses

from

the

Pulser can be

more

than

650

mAo

The

ground

cable

reduces the

IR

drop

and

the

lead

inductance.

OPERATING

CHARACTERISTICS

The HP 546A Logic Pulser generates pulses

as

programmed

by a

fingertip

push-slide switch. The

Pulser

is

programmed

by

pushing

the

switch

once

for

each single pulse

output,

or

a specific

number

of

times

for

continuous

pulse streamsorpulse bursts at selected frequencies. The

numberoftimes

to

push

the

switchtoselectanoutput

modeislabeled adjacenttothe

switch andisdescribed in Table 2.

On

the

label a

dot

(e) represents a push; a dash

(-)

represents a

hold.Asshown in Table 2,

the

pulses

appliedtothe

LED

indicatorsinthe

tip

are slowed

down

for

visibility.

Pressing

the

switch

automatically

drives a TTL, DTL,orCMOS

logic

output

or

input

from

LOW

to

HIGHorfrom

HIGHtoLOW.

The

high

source and sink

current

capabilityofthe

Pulser can

override

integrated

circuit

output

points,

originallyineither

the

HIGHorLOW

state. The

nominal10jJ.s

pulse

width

is

long

enough

for

even slow

CMOS

circuitstoaccept,

but

heavy

circuit

loads (suchasTTL

drivers) result in

narrower

pulses that

limit

the

amountofenergy

deliveredtothe

device

under

test.

The Pulser's

outputisthree-state. In

the

off-state,

the

probe's

high

output

impedance

ensures that

circuit

operationisunaffected

by

probing

until

the

Pulser switchispressed. Pulses can

be

injected

while

the

circuitisoperating

and

no

disconnections

are

needed.

The

multi-pin

stimulus

kit

(Figure

2)

is

useful

for

stimulating

uptofour

inputsofa gate at

the

same

time,orfor

stimulating

four

different

circuit

nodes.

The Pulser's

power

input

and

output

(tip)

circuits are

protected

against

overvoltage

and reverse

polarity.

Switch Action

Output

Pulse Rate

Output

Pulse

Mode

LED

Indication

(±10%)

Push

single

1 Pulse

One

short

flash

Push-hold

100 Hz 100 Hz

(Continuous)

10

Hz

rate

Push/push-hold

100 Hz 100

Burst.

10 Hz

rate

during

burst

Push/push/push-hold

10 Hz 10 Hz

(Continuous)

5 Hz

rate

Push/push/push/

100 Hz

10 Burst •

Two

short

flashes

and

push-hold

a

l-second

pause

Push/push/push/

1 Hz 1 Hz

(Continuous)

One

flash/second

push/push-hold

• 1

second

burst

for 100

pulses

every

two

seconds

.

• 0.1

second

burstof10

pulses

once

each

second.

(

0

1

10

Hz

rrn,ill

546A

LOGIC

PULSER

]

z

100

-

'0

BURST

.. -

0

100

aURST . ,

H'

....

HEWLETT·PACKARD

A push-push action

of

the switch must

occur

within

less

than 1 second to be effective.

A

hold

actionofthe

switch

for

greater than 1 second begins executionofthe

pro-

grammed

output.

Any

function

can be locked on by the push-slide actionofthe

switch.

Releasing

the

switch

midway

through

a burst does

not

terminate

the

burst.

The single pulses generated

when

a burstisprogrammed

are subtracted

from

the

first burst, e.g., a

100

burstisoutputas1-1-98, lOa, lOa, etc.

Releasing the switch in any

output

mode

other

than

midburst

terminates

output

and allows a

new

mode

to

be

programmed

immediately. Releasing the switch

for

longer than 1 second, erases the

programmingofprevious pushes.

(3)

(4)

(5)

(6)

OPERATING PROCEDURES

To operate the Pulser, observe

the

following

procedures:

NOTE

In the

following

step, be sure to

connect

the red

power

leadofthe Pulser

to

the positive sideofthe

powersupply.

a.

Connect

the

power

leads

of

the

pulser

to

the

power

supply

of

the

logic being pulsed

(3to18V). (The Pulser may be

powered

fromadifferent

source,

provided

the voltageisthe

same

as

thatofthe

circuit

under

test and a

common

groundisused.)

b.

Contact

the

logic

nodetobe stimulated

with

the

tipofthe

Pulser.

c.

program the generation

of

pulses by pushing

the

switch

per

adjacent markings (refer

to

Table 2

for

details). Characteristicsofthe

switch

operation

are described in the

following

steps.

(1)

(2)