HP 545A Service and user manual

OPERATING

AND

SERVICE

MANUAL

LOGIC

Ff/o-

~

PROBE

545A

HEWLETT

e.

PACKARD

CERTIFICATION

Hewlett-Packard shipment ments are traceable to the Bureau's calibration facility, zation members.

from the factory.

Company

certifies

Hewlett-Packard

United

and

that

this

instrument

Company

States

to the calibration facilities

National Bureau

met

its

published

further certifies

of

Standards,

of

other

International Standards

WARRANTY AND ASSISTANCE

This Hewlett-Packard of

one

year from the date

which

prove

to

be defective and provided the preventive maintenance procedures in this manual are by

misuse OR IMPLIED, INCLUDING, ABILITY CONSEQUENTIAL

If

this

shall Service contracts For

vided at the back

of

the

AND

FITNESS FOR A PARTICULAR PURPOSE. HEWLETT

product

not

any

assistance,

is sold as part

be applicable, and

product

DAMAGES.

or

customer

contact

of

this manual.

is warranted against defects in materials

of

shipment. Hewlett-Packard will, at its

during

are

this

your

the warranty

not

covered

BUT

NOT

of

a Hewlett-Packard integrated instrument system, the above

product

assistance agreements are available

nearest Hewlett-Packard Sales and Service Office. Addresses are

by

LIMITED TO, THE IMPLIED WARRANTIES OF

shall be covered

period

this warranty. NO OTHER WARRANTIES ARE EXPRESSED

provided

only

by

option,

they

are returned

-PACKARD

the

system warranty.

for

Hewlett-Packard products.

specifications

that

its calibration measure-

to

the extent allowed

and

workmanship

repair

followed. Repairs necessitated

IS

at

the

time

Organi-

for a period

or

replace

to

Hewlett-Packard,

NOT

products

MERCHANT-

LIABLE FOR

warranty

01

of

by

the

pro-

OODO-A-237

LOGIC

545A

PROBE

MANUAL Microfiche

PART

Part

This

Numbers

The

described

NO.

No.

00545-90005

OPERATING

SERIES NUMBERS: 1540, 1544,

manual

changes in Logic Probes

00545-90004

refers

1540, 1544, and 1628.

in

CHANGE

Copyright 5301

STEVENS

AND

directly

NEWER

to

SERIES

SHEETS

CREEK

included

HEWLETT-PACKARD

BLVD

Printed:

HP

with

SERVICE

Model

LOGIC

Series

Numbers

with

.,

SANTA

NOV 1976

MANUAL

AND

1628

545A Logic Probes

PROBES

higher

the

manual.

COMPANY

CLARA, CALIF.

than 1628 are

1975

95050

with

Series

PRINTED

Ff/a-

HEWLETT

~~PACKARD

IN

U.S.A.

Page ii

TABLE

OF

CONTENTS

Model

545A

Title

Introduction Logic Level Lamp

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Date

Code

Series Unpacking Matching

the

Using

Probe

Logic Maintenance

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Indications

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

Instruments Logic Probe

Theory

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

1.

2.

3.

4.

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

of

Operation

HP 545A Logic Probe Specifications

Equipment

Test

Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Manufacturers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

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

LIST

OF

TABLES

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

Required

Code

and

Recommended

List

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

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

Page

10 11 21 21

Page

5 13 22 24

6

6 6 7

Model

545A

LIST

OF

FIGURES

Page

iii

Figure

1.

1a.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

HP

Model

Tip

Kit

TTL

CMOS

TTL CMOS Disassembled Logic Level Performance Test Setup Positive Pulse Performance Test Setup TTL CMOS Model

545A Logic Probe

(00545-60104)

Logic

Level Lamp

Levels (5

Logic Level Lamp

Levels

(5

Mode

Threshold

Mode

Threshold

View

Negative

Pulse Performance Test Setup

Negative Pulse Performance Test Setup

545A Schematic (00545-60001)

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

Indications

Vdc

Power

Vdc

Power

Level

of

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

with

Supply)

Indications

Supply)

vs

Level

Logic Probe

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

Supply Voltage

vs

Supply Voltage

with

Probe

Input

Voltage

with

Probe

Input

Voltage

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

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

A1 (00545-60001)

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

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

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

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

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

Component

Locator

.....

Page

0 1

3

4 8

9 12 17 18 19 20 25

Page 0

Model

54SA

GRABBER CONNECTORS

BE

PULLED CABLES TERMINALS

TO

SQUEEZE

MAY

OFF USE

GRABBER

{

~.·.;.·

.•..

--c::,;e.:.::::

~

SQUEEZE

OPEN

Figure

1.

;.~.''),.

1

•

1

GRABBER

HP

Model

_______

TO

545A Logic Probe

_

..........

Model

545A

Page 1

SPRING

5060-0420

HOOK

TIP\

506Q-0419

AVAILABLE

KIT

MODEL NO. 00545-60104

TIP

1

ACCESSORIES

BANANA

1251-0013

I

T

oo•o-<>n'

~

Figure

1a.

Tip Kit (00545-60104)

TIP

POST

140Q-0844

TIP

Page 2

INTRODUCTION

The

Hewlett-Packard

also

indicate cuits such nsec in patible lamp

is

change

memory

intermediate

as

an duration with

virtually

located

is

detected;

indicator

open

under

Model

and pulse trains

2)

remains

545A Logic Probe

or

"bad"

collector

all TTL, DTL, RTL, HTL,

the

when

output

up

MEM-CLR

the

on

until

probe

Logic levels,

without

to

40

MHz

button.

is

first

the

MEM-CLR

will

detect

including

pull-up

CMOS MOS, This

indicator

powered;

button

and

indicate

an

open

resistors. The presence and

and

80

MHz

CMOS,

and

turns

3)

when

is

depressed.

HIGH

circuit

TTL

HiNIL

on

the

and

on a TTL

will

also be indicated. The

integrated

when

1)

probe

LOW

either

tip

logic

or

CMOS

polarity

circuits. A

HIGH

is

touched

levels. The

gate, and

of

single pulses

memory

or

LOW

to

any circuit. The

Model

probe

level

545A

will

open

cir-

of

~10

is

com-

indicator

logic

LOGIC

The or voltage levels and pulses cations:

in its bright voltages between

to

MATCHING

Hewlett-Packard the 10529A Logic Probe

LEVEL

logic

level

dynamic,

1)

dim

state and

for

flash at

Model

546A

is

touching

LAMP

indicator

existing

off;

inputs above

about a 10

2)

dim

must

the

in

logic

Hz

INSTRUMENTS

makes several digital

or

10526T

Comparator.

the

output

INDICATIONS

lamp,

near

the

circuit

under

for

TTL

and

(about

half brilliance;

be

driven

the

logic 1 threshold

1 and

rate.

Logic Pulser, The

to

the

More

information

Logic Pulser can be used

sense

probe

tip,

will

give an

test. Figures 2 and 3 show

CMOS

logic

the

operation

3)

bright

one

of

the

other

and

off

9 thresholds and

about

troubleshooting

Model

activity

548A

of

or

the

respectively.

(full

three

for

using

instruments

10528A Logic

to

element.

immediate

brilliance);

states

inputs

below

for

open

the

545A

stimulate

indication

how

the

The

indicator

4)

flashing

by

voltage

the

logic

circuits. Pulsating inputs

is

on

page

that

complement

Clip,

Model

the

input

of

the

logic

level

lamp can give any

on

and

levels at

9 threshold.

7.

the

547A

Current

of

a logic

indicator

the

logic states,

off.

The lamp

probe

The

will

Logic Probe. These are

Tracer, and

element

either

static

lamp responds

of

four

is

normally

tip.

The lamp

lamp

is

dim

cause

the

lamp

Model

while

the

Logic

to

indi-

is

for

Modei545A

10 NANOSECOND SINGLE

PULSE

Page 3

INDICATOR

Figure

INPUT

SIGNAL

LAMP

2.

TTL

LOGIC ONE THRESHOLD RANGE

"BAD"

OPEN

LOGIC ZERO .8

THRESHOLD .S

RANGE

LEVEL

CIRCUIT

t

:

2.4

2.0

1.8

OR

1.0

OFF

--

------

--

------

--

---

--

__

---

0

-,

__

Logic Level Lamp Indications

I

10

~ANOSECO~[

SINGLE--

PULSE

--

I

with

Probe

Input

•

:

PULSES

UP

I CAUSE INDICATOR TO

1

BLINK

TIME____.

Voltage Levels (5 Vde Power Supply)

TO 80 MHZ

AT

10HZ

Page 4

10 NANOSECOND

PULSE

SINGLE

Model

545A

Figure

INPUT

SIGNAL

INDICATOR LAMP

3.

CMOS

LOGIC ONE THRESHOLD RANGE

"BAD" OPEN

LOGIC ZERO THRESHOLD

RANGE PULSE

Logic Level Lamp Indications

t

LEVEL

CIRCUIT

t

BRIGHT

4.00

--------

3.50--------

3.00--------

OR

----

2.00-----

1.50

-----

1_00

0

-----1----l

DIM

-----

OFF--

1

~

1

NANO~~CONC

SINGLE

-1

: I

I I

1

I

1

:

with

0.06

SEC

---

Probe

TIME----

Input

•

I PULSES

I CAUSE INDICATOR TO

1

BLINK

Voltage Levels

UP

TO

40

MHz

AT

10

Hz

(5

Vdc Power Supply)

Model

545A

SPECIFICATIONS

Page

5

Specifications

Input

for

the

545A

Current: s15

!J.A

Capacitance: s15

Logic Thresholds: *TTL:

Input

Minimum

Input

Maximum

Input

Overload Protection: ±120V

Pulse

Memory:

Pulse

Pulse Repetition Frequency: TTL: 80

Indicates level

Power Requirements: TTL: 4.5

Temperature: 0°

to

Weight: 113.4 g (4 oz) Size:

Probe

body,

15.24 em

Accessories

Included:

Accessories Available:

*+5 Vdc

power

supply;

usable

Logic

Probe are

Table

(source

or

pF

Logic

ONE

Logic

ZERO 0.8 + 0.2,

Width:

from

10

first

entry

bad level

to CMOS: 3 to Maximum Overload

Current:

Protection:

55°C

net;

Shipping

(6

in);

Ground Tip

Three Tip

to

Wire,

Cover,

Grabber

Kit,

HP Part

+15 Vdc with slightly

given

1.

HP 545A

sink)

2.0 + 0.4,

ns

with

continuous

into

new

for

pulse

15

Vdc

18

Vdc

Weight:

Cable,

HP Part

Squeeze

No.

in

Table

-0.2

-0.3

ground

(de

valid

.2:1

!J.Sec

70

mA

±25

Vdc

170 g

119.38 em No.

No.

00547-40005

Connectors

00545-60104

increased

1.

Logic

Probe

Vdc

lead

(typically

MHz;

to

1kHz);

logic

level:

wide.

for 1 minute

(6

oz)

(47

in)

00545-60105

thresholds.

Specifications

CMOS:

20

ns

CMOS:

±250V

40

for

also indicates

HP

No.

10230-62101

Logic

ONE

0.7 x V

Logic ZERO 0.3 x

without

ground

lead)

MHz.

15

seconds (de

return

to

initial

supply

Ysupply

to

1 kHz)

valid

±0.5

Vdc

Page 6

DATE

CODE

The

year and week

1975.

There

Model

of

manufacture

is

no

serial

number.

are stamped

on

the

circuit

board.

Example:

"5-24"

would

indicate 24th

Week

545A

of

SERIES

A

page between

with

your covers probes appropriate

CODE

4-digit

series

number

of

this manual.

the

manual and

the

manual.

Hewlett-Packard representative

with

series

is

If

the

The

MANUAL

several series numbers.

number.

UNPACKING

If

the

shipping Logic Probe fications, offices are The

Sales

to

carrier

GRABBER

Three

grabber

power

545A ground

connections. Use

package

for

obvious

notify

the

listed at and Service be

the

settled.

SQUEEZE

squeeze

cable

for

is

physical damage (dents, scratches, etc.)

carrier and nearest Hewlett-Packard

back

office

CONNECTORS

connectors

power

also stamped

board

the

Logic Probe. These

damaged,

of

this manual). Retain

will

supply connections.

of

the

on

the

circuit

board.

series

number

CHANGES sheet should have a series

for a MANUAL

ask

that

arrange

grabber

for

are supplied

is

differs

differences

CHANGES sheet

Each

item

the

carrier's agent

shipping

replacement

with

One

shown

in

Figure 1.

in

the

grabber

This

number

from

the

manual series

are covered

the

manual affected

be

If

Sales

and Service

package and packaging material

of

your

Logic Probe

545A.

Two

may

should

by number with

the

present

the

be

when

Logic Probe

Office

grabbers may

pressed

match the series

number,

MANUAL

matching

by a different

the

without

on

the

there CHANGES sheets

the

series

package

is

damaged

immediately.

waiting

be

pressed

end

of

the

number

are

other

differences

board.

If

it

does

number.

is

opened.

or

for

carrier's inspection.

for

on

the

short

This manual

is

labelled

Inspect

fails

to

meet speci-

(Sales

and Service

a claim against the

two

ends

ground

on

the

included

not,

with

of

wire

title

ask

the

for

Model

545A

Page 7

USING

Probe Power Supply.

DC ted In the may grounds nity.

Pulse

difficult

?.50

THE

power

together.

the

TTL

threshold

be

connected

when

However,

Detection.

to

msec.

LOGIC

supply.

The

mode

the

levels are a

using its use

The

observe

Negative

PROBE

The

Logic

If

a separate

power

supply

thresholds

just

behind

external

is

optional

Logic

on

an

pulses cause

power

function

Probe

oscilloscope.

Troubleshooting. The bad level

puts.

The

logic

HIGH

and

the

(i.e.,

high

cator

dim.

to

level

Several test at its clock

signals.

flashing

impedance

It

is

the

logic

circuit

normal

Questions

on

and

output)

also useful

probe.

analysis

clock

rate

such

off,

indicating

for

techniques

while

Probe

supply

voltage

change

of

the

Probe

regulated

and

is

ideal

the

indicator

feature

logic

LOW

is

detected

detecting

monitoring

as

"is

the

that

pulse

can

be

powered

is

used,

range

for

slightly

the

not

are useful

counter

as

supply

indicator

power

required

for

detecting

Positive pulses

to

of

the

Model

states are

as

an

floating

for

train

activity

from

the

power

TTL

operation

the

supply

voltage

window.

supplies.

for

all

short

to

go

off

momentarily.

545A

detected

open

circuit

or

unconnected

with

the

various

operating?"

is

present.

the

supply

and

is

4.5-15

voltage

(see

Figure

The

ground

It

also

improves

applications.

duration

?.10

nsec

Logic

Probe

as

described

(or

bad level)

TTL

Logic

Probe.

control

are

quickly

signals such

of

the

circuit

circuit-under-test

Vdc,

and

is

increased (see Figure 4).

5). A

ground

wire

is a convenient

pulse

and

low

or

more

in

is

useful

under

condition,

or

CMOS

One

resolved

under

for

CMOS

wire

width

sensitivity and noise

repetition

width

trigger

for

testing three-state

Pulse

Detection which

gate

inputs

technique

as

reset, start, stop by

noting

test

or

grounds

the

range

In

(provided

means

rate pulses

the

and

leaves

which

is

to

run

if

the

from

should

is

the

CMOS

with

of

that

indicator

the the look

the

circuit

shift,

probe

a regulated

be

connec-

3-18

Vdc.

mode

the

Probe)

connecting

immu-

would

be

on

for

logic

out-

third

state

probe

indi-

like

a bad

under

transfer,

indicator

or

is

Page 8

Modei545A

...

w

>

w

...

0

...

0

:z:

w

"'

a:

:z:

...

1:

2.2

2.0

1.8

1.6

1.4

1.2

1.0

.8

1-

··--··

··-·····

-···

···········-

4

Figure

··-

··-···········

...

-

·-···········

···········- ··-··········

r--· -

6

5

DC

4.

TTL

Mode

!

-

····-

-·

·-

··-·········

8

SUPPLY VOLTAGE TO PROBE POWER LEADS

10

9

Threshold Level

LO_GIC

·········-

1·-

,._BAD

..........

~---

LOGIC

11

12 13

vs

Supply Voltage

HIGH

·-·········

L.iiVEi:

·········-·

LOW

;

14

1-··

···-

•........

·-

15

Modei545A

Page 9

14-r---+---i----+-----+---+·····--+---1-----+-----+---4------+-~-~--l+~-

---+----···l---·--+--·······

12-f--t---+--+--f------+---+---1!-----t---+-----+·--+--

--··+

---+--·-··+-----+---·-···-+ --f----····-··-+--+--·-··-·-+---+·····-·---l--

~

10--

...

..J

-

--+-----+---+---------+---+---··-··-·+---+-

9

~

...

~

s-r---+---+--+---+---~~~-~-+--+---+----+---+--~----+---+----1

:;;

----

~

-----+--·-··--i--="'""'

4

__

j

.......... -__

-··

2.1

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

2 -

.9

o+----+----+----+----~--+----+----+-----+----~--+---4----+-----+----~--+-

3

---+-~---+···---~--

5

Figure

..........

~~ ~--!

L__L

I I

5.

~------+

____

-

DC

CMOS

-+···--+···

-

.....

---··

L

I__

----+-----f----+----+----+---·-+-L-O_G--11

-i-----t--······-······+--+--··-·····-+---+-- +--+-··-·-··-·

SUPPLY VOLTAGE TO PROBE AND CIRCUIT

Mode

·-··

+--!-·-·····-+--

-+-~'F'k:::'".__,;,___~-----+----·f··-

·

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

~

\······--

.......

:;;;··-·---t-""-:::::r~------+--·_

Threshold Level

10

·-·-··[-

-·-·-···

···-·····-···+-----+

vs

+·-··-·--+-·-··-·-!

4-----+···-···---1---=lo--1""'-=--

Supply Voltage

+--+!~--

...... --;.....--

BAO

EVEL i

·-······-·--

f--L_O_W-t------\-----1

~

+---!---

! I

··-·····--+-----1

+-

15

·-·

18

Page

10

Modei545A

Another useful or

to single-step

allows changes

real-time analysis

Pulser

and

fault finding

LOGIC

PROBE

The following

manual.

this

Input

Circuits. At

Capacitor

probe

circuits from reversed polarity of

normal

to

operation.

probe

technique

in

the

means

in

digital circuits.

THEORY OF OPERATION

logic

C1

and

circuitry.

the

logic signals

method,

the resistor

At

is

to replace

the

normal clock signal with a very slow clock signal from a pulse generator

clock input with a pulse

to

occur

at a rate slow

coupled

to

detect

Probe Theory of

probe

signal input, resistor

R3

provide a path for narrow pulses. At

with

the

logic state changes with

Operation

the

power

input voltages above approximately

generator

ability

power

Threshold Detection and Selection. Input signals

the

input signal

CMOS levels track

Logic

Levels and Pulses.

tive pulse

LOW

the

If

the

probe

HIGH,

the

lamp

to

flash at

2:.10 lamp

input

lamp

to

internal reference voltages

the

nsec

will

be

is

not

will

be

about a 10

power

supply voltage to which

If

the

probe

cause

the

lamp to switch off for approximately

off. A single positive pulse

connected

lighted dimly. A single pulse

Hz

rate.

as

level

is

continuously HIGH,

to an external circuit,

similar

enough

to

inject logic level pulses anywhere

should

R2

and clamp diodes

connections

are

applied

selected by

the

2:.10

nsec will cause

will

to

that they can

the

logic

be

referenced to

the

and

20V,

to

the

probe

is

the

or

is

connected

also

be

the

HP

Model

Probe,

contribute

the

in

U1

power

provide a low series voltage

CR1

two parallel threshold detectors which compare

TTL-CMOS switch

connected.

indicator lamp

50

msec.

the

to

stretched

be

observed

10526T

or

546A

on

a real-time basis. This

in

the

circuit with a

to rapid troubleshooting and

schematic diagram near

protect

the

probe

from input overloads.

input Q1, Q2, CR1, and

drop

conducts

lamp

and limits

S1.

will

If

the

probe

to

flash bright for about

the

TTL

levels are fixed and

be

bright. A single nega-

input

a voltage between logic

to

50

msec. Pulsating inputs cause

logic

Pulser. This

the

back of

R1

protect

across

Q2

voltage applied

is

continuously

50

msec.

LOW

and logic

logic

the

for

the

Model

545A

Page

11

Memory and Reset.

button, button

ing if

2)

the

when

which

is

depressed.

pulse

slew rate

the

probe

The

turns

on It

is

at least 1 is

faster than 1V

is

first

Model

when

will

also

J.LSec

powered;

545A Logic Probe contains a

either a HIGH

come

on

wide.

Transitions

/msec.

3)

if

The

when

or

LOW

a pulse

from a good

indicator

the

probe

of

MAINTENANCE

Probe Disassembly. To disassemble Logic Probe, refer

With

1.

2.

3.

4.

5.

fingers, unscrew (ccw)

Remove With Slide

Lift

indicator probe bottom

top

shell (MP2)

tip,

shell (MP3)

window

remove

off

Probe Assembly. Reverse disassembly

(MPS). If

retainer

off

the

probe.

the

probe

ring

probe

tip

procedure

tip

(MP7).

window

(MP4).

end.

.

...-------

CAUTION

BE

CAREFUL

BOARD.

(~25

WATTS}

SOLDER

WHEN

EXCESS

THE

LEADS.

IRON

REPLACING

HEAT

CAN

AND

RUIN

APPLY

memory

level change

the

form

good

level

turns

on

when

tip

is

touched

to

Figure 6, and

has a protruding

...

PARTS

THE

ON

THE

BOARD.

MINIMUM

indicator

is

detected,

level/bad

to

a bad level

1) to

proceed

rear stud, skip step

FRAGILE

either

any

level/same

HIGH

circuit.

as

PRINTED-CIRCUIT

USE A LOW

HEAT

NECESSARY

lamp, located

and remains

good

will

not

turn

or

LOW

follows:

3.

WATTAGE

TO

under

the

on

until

the MEM-CLR

level occurs,

on

the

indicator

level logic

UN-

MEM-CLR

provid-

lamp

is

detected;

Page 12

Model

545A

DSl

MP7

MP1

MP5

MP4

SEE

NOTE

·-J.·!----

MP3

MP2

NOTE:

MP4

is

not

used

if

Figure

MP5

6.

Disassembled View

of

Window rear

stud

has a protruding

....

Logic Probe

with

Rt

(UNDER

03)

1

(UNDER

03)

A 1 (00545-60001)

CR2

(UNDER

S2)

Component

Locator

Model

545A

Page

13

Test Procedure. There are

Proof

of

Performance Test. Tests

no

adjustments

to

assure cations listed in Table 1 are described in described in Table

Qty.

1

1 1

1

2.

Table

Instrument

Power Supply (A)

Power Supply

Volt-Ohmmeter

Oscilloscope

Generator

Pulse

Resistor

2.

Test Equipment Required and

(B)

1 Resistor 1 Capacitor 1

Capacitor

or

preventive

correct

the

maintenance

operation

following

Required

0-40

0-20

0-10

10

nsec/div

1

±20V

Output;

0.1

10

procedures

of

the

Model

paragraphs. Test

Recommended

Characteristics

Vdc

± 0.1%

0-1

Ampere

Vdc

± 0.1%

0-1

Ampere

Vdc;

2%

Accuracy

Horizontal

volt/div

1ooon

~-tF

10

5%

son

5%

~-tF

±20%

+75 -10%

Vertical

nsec pulse

1

W

/

4

2w

25V

for

the Logic Probe.

545A Logic Probe according

equipment

required

HP

25V

to

specifi-

for

these tests

Type Recommended

HP

6104A

HP

6111A

HP

427A

HP

17108

HP

214A

HP

0683-1025

HP

0698-3311

HP

0170-0022

HP

0180-0059

is

Page

14

Modei545A

Logic Level Performance Test. With test

a.

Set power supply A

b. Set power supply B

c. Set TTL-CMOS switch

d. Set power supply B

Increase power supply B voltage until indicator just reaches full brilliance. Probe tip voltage should

e.

to

+5.0V. OV.

to

TTL.

+1.5V.

+2.0, +0.4 -0.2V.

f.

Reduce power supply B voltage until indicator

-0.3V.

For use

+15V,

g.

Set TTL-CMOS switch

h.

Set power supply A

i.

Set power supply B

Increase power supply B voltage until

j.

in

the

TTL

with slightly

to

CMOS.

to

+5.0V.

to

+2.5V.

mode,

changed

+3.5V, ±0.5V.

k.

Reduce power supply B voltage until indicator ±0.5V.

I.

Disconnect test

equipment.

equipment

Probe

connected

indicator should light dimly.

is

just extinguished. Probe tip voltage should

NOTE

the

545A

logic

thresholds. See Figure 4.

Probe

indicator should light dimly.

probe

indicator just reaches full brilliance.

is

as

shown

in

Figure 7,

proceed

as

follows:

be

Probe

can use

power

supplies

Probe

up

to

tip voltage should

just extinguished. Probe tip voltage should

be

+0.8V, +0.2V

be

+1.5V

to

Model

545A

In

the

CMOS

mode

Thresholds levels

the

are

a function of

545A

NOTE

logic

Probe can use

the

power

supplies up to

supply voltage. See Figure

5.

+18V.

Page

15

Positive Pulse Performance Test. With test

a. Set b. Set TTL-CMOS switch to c. Set pulse generator

power

supply A to +5.0V.

to

TTL.

output

a positive-going

d. Set pulse generator repetition rate

flash

once

every second.

Gradually increase power supply A voltage

e.

change

f.

Set TTL-CMOS switch

g. Set

in

power

probe

indicator response.

supply A

to

CMOS.

+5.0V.

h. Repeat steps c and d.

i.

Disconnect test

To test CMOS A from voltage.

+3V

Observe

equipment.

operation

to

+18V

that

and

probe

equipment

to

over voltage range

change

indicator flashes

connected

5V

/10

as

shown

nsec pulse.

in

Figure 8, proceed

as

follows:

approximately one-pulse-per-second. The probe indicator should

to

+15.0V while observing

NOTE

in

specifications vary power supply

pulse

generator

output

on

once-per-second.

probe

indicator. There should

to

track power supply

be

no

Page

16

Model

545A

Negative

Pulse

Performance Test.

a.

Set

power

supply A

b.

Set

TTL-CMOS switch

c.

Set

pulse generator

d. Adjust pulse gneerator

pulse-per-second. Probe Gradually increase

e.

change in probe

f.

Set

TTL-CMOS switch g. Connect test h.

Set

power

i.

Set

pulse generator

j.

Adjust pulse gneerator pulse-per-second. Probe

Gradually increase

k.

power

equipment

supply A

i. Disconnect test

With

test

to

+S.OV;

to

output a negative-going

power

indicator

to

+3.0V.

to

output a negative-going

power

output.

equipment.

set

TTL.

to

give

waveform

indicator

supply B voltage

response.

CMOS.

as

shown in Figure 10.

to

give

waveform

indicator

supply A voltage

There

should

equipment

power

supply B

at

should flash

at

should flash

be

no

connected

to

+S.OV.

pulse.

probe

tip

as

off

once

to

+15.0V

probe

to

change in

while

pulse.

tip

as

off

once

+18.0V, adjusting

probe

as

shown

shown in Figure 9,

per

second.

observing

shown in Figure

per

second.

in Figure 9,

the

indicator

probe

pulse

response.

proceed

with a repetition

indicator.

10

with a repetition

generator

There should be

output

as

follows:

rate

to

rate

track

of

one-

no

one-

with

Model

545A

HP

6111A

HP

427A

HP

6104A

Page

17

POWER SUPPLY

B

/~

DC

VOLTMETER

Figure

KEEP GROUND LEADS SHORT

7.

Logic Level Performance Test Setup

+5V POWER SUPPLY

A

Page 18

HP

214A

PULSE

GENERATOR

HP

SCOPE

17108

::

~~

::

~~

545A

-KEEP

GROUND LEADS SHORT

~

1

PPS

:::::::1

PPS

TTLMODE

CMOSMODE

HP

6104A

+5V

POWER

SUPPLY

Modei545A

A

Figure

8.

Positive Pulse Performance

Test

Setup

Model

545A

HP

POWER SUPPLY

6104A

.._lOV

A

HP

6111A

+SV

POWER SUPPLY

B

Page

19

HP

214A

PULSE

GENERATOR

Figure

9.

+SV~t!J

ov

TTL

Negative Pulse Performance Test Setup

'ps

TTLMODE

I

J

Page

20

HP

214A

PULSE

GENERATOR

HP

6104A

+10V POWER SUPPLY

A

I

50!!

I

\

\I

L-----

I

0.1

~F

KEEP GROUND LEADS SHORT

545A

Model

545A

Figure

10.

CMOS

3.0V~:-u-

OV

10

ns

"'1PPS

Negative Pulse Performance Test Setup

Model

545A

Page

21

REPLACEABLE

The replaceable parts for

Hewlett-Packard Sales parts by their Hewlett-Packard part numbers and

PARTS

the

545A

logic

Probe

and

Service Office (see lists at rear of this manual for addresses). When ordering identify

SCHEMATIC

The

schematic diagram for

the

printed circuit

board

are

listed

reference

HP

00545-60001

in

Table

3.

Parts may

designation. Include instrument model number.

is

shown

in

be

ordered through your local

Figure

11.

Page

22

Table

3.

Replaceable Parts List Series

Reference HP Part

Designation Number Code Number

Qty

Description

1628

Mfr Mfr

Modei545A

Part

A1 A1C1

A1C2 0180-0197 A1C3 0180-2513

A1CR1

A1CR2 A1DS1 2140-0346 A1J1 1251-4259 A1MP1 00545-20202

A1Q1 A1Q2 A1Q3 1854-0699 A1Q4 1853-0412

A1R1 A1R2f

A1R2 Note 1 A1R3 A1S1 A1U1 A2

A2S1

NOTE

00545-60001

0160-4374

1902-0594 1990-0486

0340-0780

1855-0228

1853-0389

0683-1815 0761-0004 0761-0077 RESISTOR 24K, 0698-5075

3101-2039 1820-1610

00545-60102 00545-40002

3130-0384 1

1:

A1R2 MUST BE 0761-0077 (24K) WHEN A1U1 IS WITHOUT

THE

BOARD

CAPACITOR-FXD CAPACITOR-FXD CAPACITOR-FXD

DIODE-ZNR LED-VISIBLE

LAMP-INCAND CONNECTOR-SGL

STUB,

INSULATOR:

TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR

RESISTOR 180 RESISTOR 20K,

RESISTOR 130 SWITCH-SL TTL/CMOS SWITCH ASSEMBLY 28480 00545-60102

1

BUTTON,RESET(CLR)

2

CONTACT,

SUFFIX

ASSEMBLY,

18.2V

TIP

MISC; SPACER; .125 ID; .13

J-FET

PNP Sl NPN Sl PD=30W FT=3MHZ 28480 PNP Sl

SPDT-NS

PROBE IC 28480 1820-1610

PC, ROTARY

"T"

(1820-1610) A1R2

LOGIC

47PF +-10% 400WVDC CER 28480 0160-4374

2.2UF +-10% 20VDC 10UF +-20% 2WVDC

5%

D0-15

PD=1W TC=+.068%

T-1

BULB

5V 71744 7210(ANSI 7210)

CONT

.031-IN-BSC-SZ

N-CHAN

T0-92

5%

.25W FC TC=-400/+600 01121 CB1815

5%,

1W

5%

1W

5%

.125W

SUBMIN

D-MODE

PD=350MW

MO

TC=0+200

MO

TC=0+200 24546

CC

TC=0+882 01121

SWITCH

MARKED

MUST

BE 0761-0004 (20K).

TA

T0-92

FT=4MHZ

.3A 125VAC

WITH

Sl 28480 1855-0228

NCH

THE

SUFFIX

28480 00545-60001

56289 150D225X9020A2 28480 0180-2513

28480 1902-0594 28480 1990-0486

28480 1251-4259 28480 00545-20202

28480

28480 1853-0389 28480

24546

28480

28480 00545-40002 28480

"T"

(1820-1610T).

0340-0780

1854-0699 1853-0412

FP32-1-2002-J FP32-1BB1315

3101-2039

3130-0384

T00-2402-J

Model

545A

Reference

Designation Number

HP Part

Table

3.

Replaceable Parts List

Qty Description

(Continued)

All

Series

Page

Mfr

Code Number

Mfr Part

23

MP1 MP2 MP3 MP4 MP5

MP5 Note 2 MP6

MP7 P1

P2 P3

W1

W2

NOTE

00545-60104 TIP

1251-0013 CONNECTOR-BANANA 5060-0418 TIP STRAIGHT 5060-0419 5060-0420 SPRING

1400-0844 5060-0418

00545-20201 00545-20203 00545-20204 00545-40001 00546-40002

00545-40002 00547-40005

10230-62101

1

3 10230-62101 10230-62101

00545-60105

KIT

TIP

ANGLE

TIP

ADAPTER, TIP

ASSEMBLY

BODY,

UPPER

BODY,

BOTTOM

RING,

RETAINER WINDOW WINDOW

BUTTON, COVER,

TIP

GRABBER GRABBER GRABBER

CABLE

ASSEMBLY,

CONSISTS

OF:

PLUG

SINGLE

(HOOK)

ASSY

TEST

LEAD

HALF

RESET

SQUEEZE CONNECTOR

28480

83330 28480 28480 28480 5060-0420 42470 SAF-T-LEED

28480 28480 28480 00545-20203 28480 28480 28480

28480 28480

28480

00545-60104

100 5060-0418 5060-0419

5060-0418 00545-20201

00545-20204 00545-40001 00546-40002

00545-40002 00547-40005

10230-62101 SQUEEZE CONNECTOR 28480 10230-62101 SQUEEZE CONNECTOR

GROUND

28480

10230-62101

28480 00545-60105

00547-60100 CABLEASSEMBLY,PROBE 28480 00547-60100

7120-5000 7120-5001

LABEL,

LABEL, 9211-2088 CARTON-CORA RSEO 2.5-LG 2.125-WD 28480 9220-0008

2:

MP4

IS

00545-20204

NOT

USED

RING

BAG-PLSTC

WITH

AND

545A 545A

MP5

00546-40002

00545-40001

SERIAL

28480

PROBE 28480

POL

YETH

FLM

ENV

WINDOW

CAN

6-0PNG

(WHICH

BOTH

12-DP 28480

HAS

BE

PROTRUDING

REPLACED

WITH

STUD

ONE

7120-5000 7120-5001 9211-2088 9220-0008

AT

00546-40002

REAR)

WINDOW

Page

24

MFRNO.

Table

4.

MANUFACTURER

Manufacturers

NAME

Code

List

ADDRESS

Model

ZIP

CODE

545A

01121

24546 28480

42470

56289 71744 83330

ALLEN-BRADLEY

CORNING GLASS WORKS (BRADFORD) HEWLETT-PACKARD

NATIONAL CASH SPRAGUE CHICAGO SMITH

HERMAN H INC.

CO.

REGISTER

ELECTRIC

MINIATURE

CO

CORPORATE

CO

LAMP

CO

WORKS

HQ.

MILWAUKEE BRADFORD PALO

ALTO DAYTON NORTH CHICAGO BROOKLYN NY

WI PA CA

OH

ADAMS

IL

MA

53212 16701 94304 45409 01247 60640 11207

Model

TIP

VOLTAGE

NOT

CONNECTED

TO

OTHER

TTL=

I.SV

CMOS=2.5V PROBE

TIP

CIRCUIT

545A

I.

IF A lUI 20K. AIR2 =

IF

24K.

IS

MARKED

AIUI

NOTE

"1820-1620T",

MARKING

IS "1820-1610",

AIR2 =

AI

LOGIC

ftO~RD

ASSEMB_L'f(00545-60~0Jl..S~RI;sc...:.I,.62,_B

51

CMOS-.6

Ul

2 3

2.5V

C2

2.2U

tt!'-,

CR2

Page

25

__

_

Q3

I

+

C3

IOU

I

__

j

Figure

11.

Mode/545A

Schematic Diagram Series

1628

Page

26

Reference

Designation Number

HP

Part

Table

5.

Replaceable Parts

Qty Description

for

Series

1540

and

1544

Model

Mfr Mfr Part

Code Number

545A

A1 A1C1 0160-4374

A1C2 0180-0197 A1C3 0180-1701

A1CR1 1902-0594 A1CR2 1990-0486

A1DS1 2140-0346 A1J1 1251-4259 A1MP1 00545-20202

A1Q1 1855-0228 A1Q2 1853-0389 A1Q3 1854-0699

A1R1

A1R2~

A1R2 ote 1 A1R3 0698-5075 RESISTOR 130

A1S1 A1U1 1820-1610 A2 00545-60102 1

A2S1

NOTE

00545-60001

0340-0780

0683-1815 RESISTOR 180 0761-0004 RESISTOR 20K, 5%, 1W 0761-0077

3101-2039

00545-40002

3130-0384 1

1:

A1R2

MUST

WITHOUT

BE

THE

BOARD CAPACITOR-FXD

CAPACITOR-FXD CAPACITOR-FXD

DIODE-ZNR LED-VISIBLE

LAMP-INCAND CONNECTOR-SGL

STUB,

TIP

INSULATOR:

TRANSISTOR TRANSISTOR TRANSISTOR

RESISTOR 24K,

SWITCH-SL TTL/CMOS SWITCH

BUTTON,

2

CONTACT,

0761-0077 (24K)

SUFFIX

"T"

(1820-1610) A1R2

ASSEMBLY,

ASSEMBLY

RESET (CLR) 28480

WHEN

18.2V

SPDT-NS

PROBE IC

PC, ROTARY

LOGIC

47PF +-10% 400WVDC CER

2.2UF +-10% 20VDC

6.8UF +-20% 5%

D0-15

T-1

BULB

CONT

MISC; SPACER; .125 ID; .13

J-FET

N-CHAN

PNP Sl

T0-92

NPN Sl PD=30W

5%

.25W FC

5%

1W

5%

MO

.125W

SUBMIN

A1U1 IS

6VDC

PD=1W TC=+.068% 28480 1902-0594

5V 71744 7210(ANSI 7210)

.031-IN-BSC-SZ

D-MODE

PD=350MW FT=4MHZ 28480 1853-0389

FT=3MHZ

TC=-400/+600

MO

TC=0+200

CC

TC=0+882

SWITCH

MARKED

MUST

BE

TA

.3A 125VAC

WITH

0761-0004 (20K).

28480 00545-60001 28480 0160-4374

56289 150D225X9020A2 56289 150D685X006A2

28480 1990-0486

28480 1251-4259 28480 00545-20202

28480 0340-0780

T0-92

Sl 28480 1855-0228

28480 01121 CB1815

24546 24546 01121 BB1315

NCH

THE

SUFFIX

28480 28480 1820-1610 28480

28480

"T"

(1820-1610T).

1854-0699

FP32-1-2002-J FP32-1-

3101-2039

00545-60102 00545-40002

3130-0384

T00-2402-J

Model

545A

Page

27

AI

LOGIC

B_0£1RD

ASSEMB_L'fioo545-6ooou._s~RII::S

15408

1~44

PROBE TIP

I

IF

AIUI

20K

AIR2~

1

POWER

1

\J+

L

NOTE

IS

MARKED

IF

AIUI MARKING

24K

"1820-1620T",

IS

--~--~------

DSl

AIR2

"1820-1610",

~

6 5

4

8

-2_,_·--------------------------4-----------------4-6-.8-U------~--

(UNDER

03

+C3

Rl

03)

CR2

(UNDER

J

52)

Figure

12.

Model

545A Schematic Diagram

and

Component

Locator

Series

1540

and

1544

HEWLEn-PACKARD

To obtain servicing information and order replacement parts, contact the nearest Hewlett-Packard Sales and Service Office in

IN

THE

UNITED

CALIFORNIA

3939 Lankershim Blvd. North Hollywood

GEORGIA

P.O. Box 28234

450 Interstate North

Atlanta

ILLINOIS

5500 Howard Street Skokie 6007 6

NEW

W. Paramus 07652

IN

CANADA:

QUEBEC

Hewlett-Packard 275 Hymus Blvd. Pointe Claire

HP

STATES:

30328

JERSEY

120

Century Road

Catalog,

91604

(Canada) Ltd.

or

contact the nearest regional office.

SALES

IN

AND

SERVICE

OFFICES

EUROPE:

SWITZERLAND

Hewlett-Packard (Schweiz)

Rue

du

Bois-du-Lan 7 P.O. Box 85 CH-1217 Meyrin 2 Geneva

AFRICA,

Hewlett-Packard Intercontinental 3200 Hillview Ave. Palo Alto, California 94304

CENTRAL

Hewlett-Packard Intercontinental 3200 Hillview Ave. Palo Alto, California 94304

ASIA,

AND

AUSTRALIA:

SOUTH

AMERICA:

AG

Ff/n-

a!~

HEWLETT

PACKARD

MANUAL MICROFICHE

PART

NO.

00545-90004

PART

NO. 00545- 90005

PRINTED IN U.S.A .

HP 545A Service and user manual

Specifications and Main Features

Frequently Asked Questions

User Manual