Tektronix 466, DM44, 464 Instruction Manual

466/464

OSCILLOSCOPES AND

DM44

DIGITAL MULTIMETER

'I

lektron~

COMMITTED

TO

EXCELLENCE

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Tektronix,
P.O.
Beaverton, Oregon

070-2037-00
Product Group 40

Box

Inc.

500

97077

PLEASE CHECK FOR CHANGE
INFORMATION
OF THIS MANUAL.

INSTRUCTION

Serial Number

______

AT

THE REAR

MANUAL

First Printing JUL 1976
Revised FEB 1982

Copyright
reserved. Contents of this publication may not be
reproduced in any form
permission of Tektronix, Inc.

Products of Tektronix, Inc. and its subsidiaries
are covered by

pending patents.

© 1976 Tektronix, Inc. All rights

without

U.S.

and foreign patents

the

written

and/

or

E

TEKTRONIX, TEK, SCOPE-MOBILE,
are registered trademarks of Tektronix, Inc.

PM

TELEOUI
Tektronix

Printed in U.S.A. Specification and price change
privileges are reserved.

ENT is a registered trademark of

U.K. Limited.

and~

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LIST OF ILLUSTRATIONS
LIST OF TABLES

BEFORE OPERATING

INTRODUCTION
SAFETY INFORMATION
OPERATING VOLTAGE

Line Voltage Selection
Regulating Range Selection

OPTIONS

TABLE

OF

CONTENTS

Page

YEO

iv DELA
v MIXED SWEEP DISPLAYS

X-Y
SINGLE SWEEP DISPLAY

1
2
2
2
3

STORAGE DISPLA

STORAGE
SAVE STORAGE
SAVE RANDOM EVENTS
REDUCED SCAN STORAGE (466 ONLY)

SWEEP DISPLA

DISPLAYS

VS

VS

Page
20
20
21
21

22

22
22
23
23

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CONTROLS, CONNECTORS, AND

INDICATORS
VERTICAL
DISPLAY AND STORAGE
DM44

TRIGGER

HORIZONTAL

REAR PANEL
RIGHT SIDE PANEL

LEFT SIDE PANEL

BASIC

REV FEB 1982

_L"'

OSCILLOSCOPE DISPLAYS
NORMAL
MAGNIFIED SWEEP DISPLAYS

___

L-

AND POWER

SWEEP DISPLAY

----

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DM44 DISPLAYS AND MEASUREMENTS
4
4 VOLTS
6
9
10 Low Temperature
13 High Temperature

15 TIME AND 1/TIME
16
16

18
18
19

466/464 DM44 Operators

..

----X_

RESISTANCE

TEMPERATURE
Accuracy Check

APPLICATIONS AND MEASUREMENTS

PRELIMINARY

Signal Ground
Input Coupling Capacitor Precharging

d--

LL.

ti-.-

24
24
26
28
28
28
31
31

32
32
32
32

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TABLE

APPLICATIONS AND MEASUREMENTS (cont)

OPERATOR'S ADJUSTMENTS AND CHECKS

Trace Rotation Adjustment
Probe Compensation
Vertical Gain Check
Basic 466/464

Line Only)
DM44 Timing Check (60 Hertz Line Only)
External Horizontal Gain Check

PEAK-TO-PEAK VOLTAGE

MEASUREMENTS-AC

INSTANTANEOUS VOLTAGE

MEASUREMENTS-DC

ALGEBRAIC ADDITION
COMMON-MODE
AMPLITUDE COMPARISON

MEASUREMENTS

TIME DURATION MEASUREMENTS

FREQUENCY MEASUREMENTS
RISETIME MEASUREMENTS

TIME-DIFFERENCE BETWEEN TWO

PULSES FROM DIFFERENT SOURCES

TIME COMPARISON MEASUREMENTS

PHASE DIFFERENCE MEASUREMENTS

Timing

Check (60 Hertz

REJECTION 39

OF

CONTENTS

Page
33

33
33
33

34
34
35

35

36
38

40
41
42
42

43
44
46

APPLICATIONS AND MEASUREMENTS

HIGH

RESOLUTION PHASE DIFFERENCE

MEASUREMENTS
PULSE JITTER MEASUREMENTS 48
DELA

YEO

OR MIXED SWEEP
MAGNIFICATION
Magnified Sweep Starts
Triggered Delay Sweep Magnification 50

BASIC

466/464 DELA YEO OR MIXED SWEEP
TIME MEASUREMENTS
TIME

DIFFERENCE BETWEEN REPETITIVE

PULSES (BASIC 466/464)

TIME

DURATION MEASUREMENTS

(BASIC 466/464)

FREQUENCY MEASUREMENTS

(BASIC 466/464)

TIME

DIFFERENCE BETWEEN TWO PULSES
FROM DIFFERENT SOURCES
(BASIC 466/464)

RISETIME (BASIC 466/464)
MIX (BASIC 466/464)

(cont)

After

Delay

(cont)

Page

47

48
48

51

51

52

53

54
55
57

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466/464 DM44 Operators

A AUG 1980

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TABLE OF CONTENTS (cont)

DM44 DELAYED OR MIXED SWEEP TIME

MEASUREMENTS

TIME

DIFFERENCE BETWEEN REPETITIVE

PULSES (DM44)

TIME

DURATION
FREQUENCY MEASUREMENTS (DM44)
TIME

DIFFERENCE BETWEEN TWO PULSES

FROM DIFFERENT SOURCES (DM44)
RISETIME {DM44)
MIX {DM44)

OPERATOR'S SPECIFICATIONS

466/464

OSCILLOSCOPE

STORAGE

Stored

Storage View
VERTICAL
TRIGGERING

Sensitivity

External

Level

Trigger
DIFFERENTIAL

{BASIC
DIFFERENTIAL

{DM44)

Writing

Control

View

466/464)

MEASUREMENTS (DM44)

Speed

Time

Trigger

Input

Range in Ext 67

TIME

MEASUREMENT

TIME

MEASUREMENT

Page
58

60
61
62

62
64
64

65
65
65
65
65
65

66
66
66

67

67

67

OPERATOR'S SPECIFICATIONS (cont)

HORIZONTAL

X-Y

CALIBRATOR
Z AXIS INPUT
OUTPUTS

Out

CH 1
A+

and

B+

Gates
AC POWER SOURCE
ENVIRONMENTAL

DM44

DIGITAL

RESISTANCE

TIME
1/TIME
TEMPERATURE
DC VOLTAGE

ACCESSORIES

STANDARD ACCESSORIES
OPTIONAL ACCESSORIES

OPTIONS

OPTION 1
OPTION 4
OPTION 7

MULTIMETER

INCLUDED

Page
67

67
68
68
68
68
68
68
68

69
69
69
69
69
69

70
70
70

71
71
71
71

@

$_

466/464 DM44 Operators

.

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,£.

LIST OF

Fig. 1

Fig. 2 Vertical controls, connectors, and

Fig. 3 Display and storage controls, Fig.

Fig. 4

Fig. 5

Fig. 6 Trigger, horizontal, and

Fig. 7 Horizontal and power controls,

Fig. 8 Rear panel controls, connectors, and Fig.

Fig. SA
Fig. 9

Fig. 10 Resistance.
Fig.
Fig. 12
Fig.

Fig. 14 Basic 466/464 timing check.
Fig. 15
Fig. 16

Regulating range selector and line

fuse.

indicators. 4

connectors, and indicators.

OM

44 controls, connectors, and

indicators. 8

Trigger controls, connectors, and

indicators. 10

controls, connectors, and indicators.

connectors, and indicators.

indicators.

Left

side panel controls 17

Tilted operation.

11

Volts.
Temperature
Probe compensation.

13

DM44 timing
Peak-to-peak voltage

check

of

power

a waveform.

ILLUSTRATIONS

Page

Fig. 17

3

6 Fig.

12

14

16

18
25
27
29

33

34
34

36

Fig. 18 Algebraic addition.
Fig. 19
Fig.

Fig.
Fig. 24 High-resolution phase difference.

Fig.
Fig.
Fig.

Fig.

Fig. 30 Risetime.
Fig.

Fig. 32

Fig. 33

Fig. 34

Instantaneous voltage measurement.

Common-mode rejection.
Time duration.

20
21

Risetime.
Time difference between

22

from different sources.

Phase difference.

23

Pulse jitter.

25
26

Delayed sweep magnification.

27

Time difference between repetitive

pulses.

28

Time duration.

29

Time difference between

from different sources.

31

Time difference between repetitive

pulses.

Time duration and frequency

measurements.

Time difference between

from different sources.

Risetime.

two

two

two

pulses

pulses

pulses

Page
37
38

39
41
43

44
46
47
48
49

52

53

54
56

60

61

63

64

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REV FEB

1982

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TABLE
TABLE
TABLE

1 Regulating Ranges.
2 Resistance Ranges.
3 Volts Ranges.

LIST OF TABLES

Page

3 TABLE 4 Centigrade to Fahrenheit Conversion
24

26

TABLE 5 DM44 Delayed Sweep Displays

Page

30

58

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THE ACCESSORY POUCH
MAIN

ATTACHED
SIGNED
AND
TION

THE

TO

TO

AFFORD

IN

TRANSIT.

ADJUSTABLE
TO OFFER
TIONS, SUCH AS THOSE

TO THE OSCILLOSCOPE.

KEEP ACCESSORIES

THE OSCILLOSCOPE SOME PROTEC-

CARRYING

CONVENIENT

ILLUSTRATED.

ILLUSTRATED

READILY

HANDLE

STABLE,

OPERATING

SHOULD RE-

IT

IS

DE-

AVAILABLE

IS

DESIGNED

POSI

2037-16

STORAGE OR OPERATION OF THE OSCILLOSCOPE ON

NOT

-

,

ITS FOUR

STABLE

REAR FEET IS

OPERATING POSITIONS

DESIRABLE

ARE

. THE MOST

ILLUSTRATED.

2037-18

466/464 DM44

Operators

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INTRODUCTION

The

Tektronix
oscilloscopes.
for

displays
divisions/microsecond
The

464

storage

mode

and

the

cond

in

the
identical.
full-stored
minutes

provides
volts/division.
stable
vertical
system

0.05
features
magnifier
nanoseconds/division.
wide
power

Storage

using

The

dual-channel

calibrated

triggering

deflection

provides

microsecond/division

for

variation

consumption

466 and 464 are

The

466

with

system does

writing

Fast mode.

viewtime is

display

accurate

extends the

intensity-extending

reduced

deflection

The

sweep

over

system.

calibrated sweep rates

of

line voltages and frequencies.

BEFORE OPERATING

dual-channel

storage

a

(in the Fast-Reduced Scan mode).

speed is

intensity

dc-to-100

the

full

relative-time measurements. A X10

The

is

about

system

writing

not

up

to

The

remaining

greater

in the Save mode.

factors

trigger

bandwidth

The

along

calibrated

instrument

100 watts.

provides

speed

have the reduced scan

110

divisions/microse-

than

to

MHz

vertical system

from 5 millivolts

circuits

capabilities

horizontal

from

with

delayed sweep

sweep rate

operates over a

portable

storage

up

to

3000

features are

15 seconds at

more than 6

to

are capable

of

deflection

0.5

second

to

Maximum

of

the

to

The

Tektronix

ohm

to 20 megohms, 0 de
(using the temperature probe)
measurement is displayed
the

oscilloscope operates

The digital
provide a digital readout
points
ment
1/TIME
frequency.

5

phase power source with
conductors
potential. Operation from
current-carrying

5

ground
is
over-current

on the oscilloscope display.

points are displayed on the

The instrument is designed

(such as phase-to-phase on a

not

recommended, since

multimeter

function

SAFETY INFORMATION

(the Neutral

(fuse)

DM44

Digital

volt

on a 3-1/2
normally.

and
of

can

provide

Conductor)

conductors

protection

Multimeter

to

1200

-55°C

oscilloscope

the

time

crt
direct

to

operate

one

of

power

are live

only

the

within

measures 0

de

volts(+
to

digital

between any

Both

at

the

measurement

the

current-carrying

at

sources where both

with

three-wire

Line

the

or-),

+150°C.

display

time

same time.

from a single-

ground

Conductor

instrument.

while

combine

measure-

(earth)

respect

system)

or

The

to

two

The

of

to

has

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1

The

instrument
three-terminal polarized plug
source and safety-earth. The
the plug
electric-shock protection, insert this plug
outlet

is

directly

with a safety-earth

has a

three-wire

connected

contact.

power

for

connection

ground

to

(earth) terminal

the

instrument frame. For

cord with a

to the power

only

in a mating

panel)

to

indicate the
230 volt adapter may be required
sure to use the

of

selected (see Table 1).

correct

correct

line fuse

nominal

for

the

for

voltage. A 115-to-

line-cord

the line voltage

plug. Be

I
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.

OPERATING VOLTAGE

This

instrument

the line voltage

selector

range
or

if

the

wrong

Line Voltage Selection

This

instrument operates
230-volt nominal line voltage source, 48 to 440 hertz. To
convert
move the Line Voltage Selector

2

from one nominal line voltage range

may

selector

set

for

line fuse

be

damaged

the

wrong

is

switch

used.

from

switch

if

operated with

or

the regulating

applied

either

line voltage

a 115-volt

(located on side

or

to

the other,

466/464 DM44 Operators

Regulating Range Selection

The

Regulating Range
the rear panel) is set
shown

in Table

protection.

To

change

1.

Disconnect

2.

Loosen

on

the

selector assembly; then

a

3.

Pull
Select a range
average line voltage. Slide the bar
and plug it in. Push the

the

the

out

the range

1.

It also

regulating range:

the

two

from

Selector

for

one

contains

instrument

captive screws that

selector

Table 1

cover

assembly (located on

of

the line voltage ranges

the line fuse

from the

pull

to

switch

which

is centered

to

the desired

on and

tighten

for

overload

power

source.

hold

the cover

remove the cover.

bar (see Fig. 1

about

the

position

the screws.

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TABLE 1

Regulating Ranges

Regulating Range

Range Selector 115-Volts 230-Volts

Switch Position

LO

(Switch bar in
lower holes)

Nominal Nominal

99 to

121

volts

198 to 242 volts

@

Fig. 1. Regulating range selector & line fuse.

466/464

1737·01

M (Switch bar in

HI (Switch bar in

to meet particu lar
slot
indicates a

DM44

Operators

middle holes)

upper holes)

Fuse Size

Options

are available to

(see Item 60, C

modified

104 to 126

108 to 132

1.5

A

3AG

Fast-blow

OPTIONS

alter

applications

ontrol

s,

Connectors

oscilloscope

volts

volts

207 to 253 volts

216 to 264 volts

0.75 A 3AG
Fast-blow

oscilloscope

. A

number

, and Indi

.

performance

in

either MOD

cator

s)

3

CONTROLS, CONNECTORS AND

1.

CH 1 and

deflection

the

calibrated detent

in

2.

VOL

for

each channel, located beneath

VOL

TS/DIV

indicate the
scale-switching
connector

3.

VAR-Provides
deflection
VOL

TS/DIV
deflection
position).

CH 2 VOLTS/DIV-Selects

factor

in a 1-2-5 sequence (VAR

TS/DIV

knob. One

correct

connector

lights

the

factors between the calibrated settings

switch, and extends the

to

at least 12.5 volts per

INDICATORS

VERTICAL

control

for

the indicated

Readout-Consists

or

the

other

deflection

X1

continuously

is

lamp.

factor

used. A

deflection

of

two

the

lamp

will

when a

probe

variable

maximum

division

the vertical

must
factor).

small lamps

skirt

of

each

light

up

probe

with

without

uncalibrated

this

of

vertical

(5 volt

be

to

the

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Fig.

2.

Vertical controls, connectors, and indicators.

4

4.

UNCAL

VOL

TS/DIV
vertical

X-Y mode, the CH 2 POSITION
axis (vertically) and the
positions on

466/464 DM44 Operators

deflection

5.

POSITION-Positions

Lamp-Indicates

control

is

out

of

factor

is uncalibrated.

Horizontal

the

X-axis (horizontally).

when

the calibrated

the

display

control

positions

POSITION

the

VAR

detent

and the

vertically. In the

on the Y

control

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6.

CH

1 OR X
application
amplifier.
connected
tal

deflection

connector

7.
signal
position,
amplifier.

the

In
disconnected
allow
position,
the

input

8.

tical

CH

of
In
to

provides vertical deflection.

AC-GND-DC-Selects

to

the
signals are capacitively
The

GND

position,

the

input

all

components

amplifier.

VERT

MODE-Selects

amplifier

1:

Channel 1 only

and

CH

2 OR

Y-lnput
external signals to the inputs
the

X-Y

mode

of

operation, the signal

the

CH 1 OR X

and the signal connected

input

of

de

component

the

from

the

coupling

system.

connector

the method used

the vertical amplifier. In the

of

the

input

of

input

connector

capacitor

of

the

input

mode

is displayed.

provides
to

coupled

input

signal is blocked.

the vertical

and

to

precharge. In the DC

signal are passed to

of

operation

connectors

of

the vertical

the CH 2 OR Y

to

to the vertical

amplifier

grounded

for

horizon-

couple

AC

for

ver-

is

to

ALT: Provides dual-trace display

is

channels. Display
of

each sweep. Useful at sweep rates faster than

microseconds/division.

ADD: Signals applied to the
connectors are algebraically added, and the algebraic
sum

is

displayed on the crt.
2 allows the display to be CH 1 plus CH 2
CH

2.

a

Useful
undesired signal

CHOP: Provides dual-trace
both channels. Display is switched between channels
repetition rate
rates slower than about 50
when a dual-trace, single-sweep

2:

Channel 2

CH

in X-Y operation.

9.

20

MHz BW/TRIG
limits the bandwidth
approximately
causes the signal applied to A
displayed on the crt.

10.

INVERT-Channel 2 display

INVERT (button in) position.

switched between channels at the end

The

for

common-mode

or

for

de offset.

of

approximately 250 kHz. Useful at sweep

only

is

displayed.

VIEW-Dual-purpose

of

the vertical

20

MHz when pulled,

of

the signals

CH

1 and CH 2

INVERT switch in Channel

or

rejection

display

microseconds/division,

display

Trigger

to

of

the

is required.

It

must be selected

amplifier

or

when pressed,

Generator

is

inverted in the

of

both

about

input

CH 1

minus

remove an

signals

switch

system

to

50

of

at

or

that

to

be

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3.

Display and storage controls,

6

466/464 DM44 Operators

connectors,

and

indicators.

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11a.

Internal
amplitude
left-hand

11b. Reduced Scan Graticule (466
operating
set

by

the VOL
referenced
measurements should be made

operating

BEAM

12.

the

graticule

applied

signals and provides a visible viewing level.

Graticule-Eliminates

and measurement points are indicated at the

graticule

in the reduced scan

to

in the reduced scan mode.

edge.

mode

TS/DIV

the smaller divisions

FINDER-Compresses

area independently

and

TIME/DIV
within

parallax. Risetime,

Only)-When

the deflection factors,

switches, are

of

this

graticule. All

this

graticule

the display

of

display position

to

within

when

19. REDUCED SCAN

reduced scan mode

20. STORAGE

crt

in the FAST and

21.

accidental erasure

22. SAVE

mode.

or

23.

as

a conventional oscilloscope in the NON STORE mode.

is

LEVEL-Varies

VAR

SAVE-Provides

of

INTEN-Varies

NON

STORE-Allows

LAMP-Indicates

in operation. 466 only.

the

writing

PERS storage modes.

longer viewing time. It prevents

the stored display.

the intensity

operation

of

that the

rate

of

the SAVE

the instrument

of

the

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13.

INTEN-Controls
FOCUS-Adjusts

14.

15.

SCALE

16.

ASTIG-Used
control
readjustment

the

Reduces display

an increase in

@

to

TRACE

17.
horizontal

18. REDUCED SCAN

ILLUM-Controls

obtain a well-defined display. It does

in normal use.

ROTATION-Adjusts

graticule

to

writing

brightness

for

optimum

in

conjunction

lines.

(PULL

the small reduced scan graticule with

rate. 466

of

the

display definition.

graticule

with the FOCUS

trace

- INTEN

only.

crt

display.

illumination.

not

require

to

align with

knob)-

466/464 DM44 Operators 7

24. VAR

stored display.

25.
disables the TRIG MODE switch. It automatically se­quences

in the full clockwise detent (manual).
determined by the VIEW TIME
sweep in a single-sweep mode.

26. VIEW
sistence)
varies the time between erase cycles in FAST mode.

27.
SAVE

PERS-Permits

FAST-Used

an

erase cycle, unless the VIEW TIME

of

the stored display in the VAR PERS mode. It

ERASE-Erases

mode when ERASE

for fast-writing displays. FAST mode

TIME-Varies

variable retention of. the

It waits a time period

control;

the retention time (per-

the stored display, except in

is

disabled.

then resets the

control

is

Fig.

4.

DM44 controls, connectors, and indicators.

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DM44

28.

Input

Connectors­(red) and
only.

29.

temperature

30.
matic
polarity
display
ed

by
operation
the

31.
(1200 volts is the maximum safe
mode);

32.
1/TIME,

COM

(black) inputs

Probe

Readout-Negative

for

indicates overrange. The decimal

the

TIME

RANGE-Selects

from

FUNCTION-Selects

Connector-Input

probe.

negative de voltage and temperature with

indication

FUNCTION

and

or

or

TIME

for

by

the oscilloscope A

1/TIME

200 ohms

functions

Two

for

polarity

positive measurement. A

and RANGE

modes.

from

.2 V to

to

20 megohms in 6 ranges.

VOL TS, OHMS, TEMP (° C),

of

the DM44.

banana jacks provide +

voltage and resistance

connector

indication

point

controls

TIME/DIV

1.2 kV de in 5 ranges

input

in the 1.2 kV de

for

is

blinking

is

position-

for

multimeter

switch in

the

auto-

no

In the 1 /TIME function the Readout and Scale Factor

of

Lamps indicate the number
of

time. One lamp

per

ms

(1/ms lamp)
lamp lit indicates intervals per second. If the duration
one event
Factor Lamps indicate frequency. The

dicates kHz, the 1/µs lamp indicates MHz, and

indicates Hz.

34. ll.

TIME-Used

TIME

POSITION control in the

tions. The ll. TIME

measurement point. The DELAY
moves both the reference
measurement point. With the time-measurement

the left

negative time difference.

of

or

the other will

or

is

being measured, the Readout and Scale

the reference

measured intervals per unit

light

to

indicate intervals

intervals

in

conjunction

control

point

per

µs

(1/µs lamp). No

1/ms

with the DELAY

TIME

and

moves

TIME

point

the Readout indicates a

only

POSITION

and the time-

lamp in-

no

1/TIME

the time-

point

lamp lit

func-

control

of

to

l

33. Scale Factor
the

indicate

light

TIME

zones on the

to

In
Lamps
intensified
will
seconds.

@

Lamps-

function,

the time difference between the

indicate ms

Two

lamps.

the

Readout and Scale Factor

crt

display. One lamp
or

µs.

No

lamp lit indicates

..

t

You

two

or

the

other

466/464 DM44 Operators

TIME POSITION

point.

located in the Maintenance section

Service manual.

NOTE

can

modify

The

your

instrument

control

procedure for making this

to make the DELAY

move

only

modification

the reference

is

of

the DM44

9

TRIGGER I

Fig.

5.

Trigger

controls,

connectors,

and indicators.

35. TRIG

operation

AUTO: Sweep

In

the absence
trigger
sweep free runs and provides a

NORM: Sweep

In the absence

trace. When the

NORM.

SINGL
Sweep operates in the single sweep mode.
sweep
until

the SINGL SWP
when the signal to
amplitude, shape
tional display. It can also
nonrepetitive signal.

36. READY
upon receipt
single-sweep display.

MODE-Determines

for

A Sweep. I

is

initiated by the applied

of

an adequate

repetition rate

of

SWP: When this

is

displayed,

Lamp-Indicates

of

an adequate

is

less than

is

initiated by the applied

an

adequate

trigger

be

rate is

pushbutton

further

or

sweeps cannot be presented

button

displayed is

time causing an unstable conven-

the mode of

trigger

bright

trigger

too

is

again pushed. It

not

be

used

A Sweep is

trigger

signal,

about

reference trace.

signal, there is

low

is

repetitive

to

signal, will present a

trigger

trigger

signal.

or

if the

20 hertz, the

trigger

for

pushed, the A

photograph

signal.

AUTO use

After

a single

is

or

varies in

"armed"

useful

and,

I

no

I

a

I

I

10

466/464 DM44 Operators

@

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37.

TRIG

Lamp-Indicates

and

will

produce

the

trigger
without a display
external triggers).

TRIG

38. A

of

time

between sweeps.
signals (such as
clockwise
of

B sweep

rate

for

delayed-sweep presentations and
rate signals. Use the A
possible
control.

signals

trigger
30 Hz are attenuated.

of
about
stable
complex

display

39.

COUPLING-Determines

to

AC: Signals are capacitively

generator. De is rejected and signals

LF REJ: Signals are capacitively coupled

the

trigger

50 kHz are attenuated. It

display

waveform.

a stable display. It is useful

circuits

position

to

provide the fastest possible sweep repetition

the

when a

on

the

HOLDOFF-Provides

complex
(BENDS

before using the A TRIG

trigger

circuit.

of

the

generator

De is rejected and signals

high-frequency

that

A Sweep is

trigger

crt

(for

example, when using

Allows

triggering

digital

A), A sweep is reset at the end

trigger

words). In the

controls

method used

circuit.

coupled

is

useful

triggered

for

setting up

signal is available

continuous

to

the

for

components

control

on

aperiodic

fully

low-repetition

for

the best

HOLDOFF

to

couple

input

of

the

below

about

to

the

input

below

providing

of

REJ:

HF

of

the trigger circuit. De is rejected and signals below
about
useful for providing a stable
components of a complex waveform.

DC: All components
the input
stable display
signals, except the
mode

40.

starts the sweep.

+:

portion

-:

portion

Correct SLOPE setting
display when

41.

signal at which the sweep

a

adjusted

a

COUPLING and SLOPE have been selected.

Signals are capacitively coupled

30

Hz and above

of

the trigger

of

with the trigger SOURCE

SLOPE-Selects

Sweep can be triggered

of

a trigger signal.

Sweep can

of

a trigger signal.

only a portion

LEVEL-Selects

for

the desired display after

about

50 kHz are attenuated. It

display

of a trigger

circuit.

low-frequency

combination

the slope

be

triggered

the

It is useful

is

important

of a cycle

amplitude

is

to

the

input

of

the

low-frequency

signal are coupled to

for

providing a

or

low-repetition rate

of

the

ALT

(dual trace)

switch

from

from

in NORM.

of

the

trigger

the positive-going

the negative-going

is being displayed.

point

triggered. It is usually

trigger

signal that

in obtaining a

on the

trigger

SOURCE,

is

l

@

466/464 DM44 Operators

11

42.

SOURCE-Determines

to

the

signal coupled

NORM:

not

indicate time relationship between CH 1 and CH 2
signals. However, stable
signals usually can be obtained
ALT, SOURCE
Carefully

CH
used as a
time-related.

CH
used as a
time-related.

Trigger

adjust LEVEL

1: A sample

trigger

2:

A sample
trigger

input

source is displayed signal(s). It does

to

NORM and

for

of

the signal available in Channel 1

signal. CH 2 signal

of

the signal available in Channel 2

signal. CH 1 signal

the source

of

the

trigger

triggering

a stable display.

of

by

setting VERT MODE to

COUPLING

is

unstable if it

is

unstable if it

of

the trigger

circuit.

non-time-related

to

LF REJ.

is

not

is

not

I

I

is

is

I

LINE (A

line

frequency

the

input
the line frequency
stable display
waveform.

EXT: Signals connected
connectors
be time-related
It is useful when the internal signal
undesired signals that
is useful when operating in

Trigger

signal is time-related

are used

circuit

only): A sample

is used

of a line-frequency

as a trigger

(multiple

or

when it

to

the External

for

triggering. External signals must

to

the displayed signal

could

cause unstable triggering. It

CHOP

is

12

of

the power-

signal. It is useful when

or

submultiple) to

desirable to provide a

component

is

too

mode.

in a complex

Trigger

for

a stable display.

small

or

contains

466/464 DM44 Operators

Input

Fig.

6.

Trigger,

indicators.

horizontal, and

power

controls,

connectors

and

@

I

I

I

J

l

J

J
J

l

EXT

-;-

10 (A

Trigger

signal is attenuated

STARTS
Sweep
the

DELAY-TIME
differential
obtain
with

a DM44

measurements

43. External Trigger

ternal

AFTER DELAY

runs

immediately

time

measurements

valid measurements. On

you

when using the

trigger

signals.

HORIZONTAL

44a. A AND B

TIME/DIV

rate

selects
TIME
TIME/DIV

sweep rate

operation

detent

switches

the

horizontal

switch

of

the

A Sweep

the

POSITION

switch

only. A VAR

for

calibrated A Sweep rates. When

are

.(clear plastic skirt) selects the sweep

basic delay

control}
(pull

for

the

fully

(X-axis}

circuit

by a factor

after the delay

POSITION

must use this mode

Inputs-Input

only}: External

of

10.

(8

Trigger

control.

you

must use this

instruments

TIME

or

AND POWER

TIME/DIV

circuit

time

out

B Sweep

control

counterclockwise

display

AND DELAY

for

A sweep

(to be used

for

delayed sweep operation. B

and rotate

to

circuit

must be in

to

is the

CH 1 input.

trigger

circuit

time

1/TIME
connectors

only

unlock}

for

the X-Y position,

only}: B

selected

When making

mode

equipped

to

obtain valid

functions.

for

TIME-A

operation and

by

the

DELAY-

selects the

delayed sweep

the

calibrated

both

TIME/DIV

by

to

ex-

44b. DM44 A AND B

The controls operate in the same manner
The A TIME/DIV switch also

point

decimal
or

1/TIME MODE.

45.

FINE/POSITION-Positions

ly

for

A sweep and B Sweep

mode.

46. X10

factor
nanosecond/division. The magnified sweep

division

of

the center graticule line}.

47.

VAR-Provides
between the calibrated settings
It extends the slowest A Sweep rate
seconds/division. The A Sweep rate is calibrated when the
control
be in the detent position
measurements. On instruments equipped
VAR control must
accurate measurements in the
tions.

48. UNCAL

uncalibrated (VAR

location when the DM44 is in the

MAG-Increases

of

10.

It extends fastest sweep rate

of

the unmagnified

is

set

fully

Lamp-Indicates

TIME/DIV

continuously

clockwise

to

make accurate differential

be

in the detent

control

AND DELAY

as

controls

or

displayed sweep rate

display

to

out

the

TIME

the display

on

the

X-axis in the X-Y

(0.5 division

variable sweep rates

of

the A TIME/DIV

to

at least 1.25

the calibrated detent.

with

position

TIME

and

1/TIME

the A Sweep rate

of

the calibrated detent}.

TIME-

37a above.

lamps and

TIME

horizontal-

by

to

is

the

center

either

side

switch.

Must

time

a DM44 the

to

make

func-

a
1

is

J

@

J . .

....

& .

!1

L .

466/464 DM44 Operators

..

!LA

l&JJL

Xi!S!.~M!Jl

......

L.J1!kJL.U3

J.L3i

LJ

,.<JJ

.a

SL

.JJL!

LLB

13

a·;

49. X10

is

on.

MAG

Lamp-Indicates

that the X10

magnifier

I

Fig.

7.

Horizontal and

indicators.

power

controls, connectors, and

50a. DELAY
sweep delay
by the A

same manner as 41a. Also, when the DM44 is in the
or
with the a TIME control. The DELAY TIME POSITION
control
measurement point. The a TIME
time-measurement point. With the time-measurement
point
indicates a negative time difference.

TIME/DIV

SOb. DM44 DELAY TIME

1/TIME

moves

to the left

You can

TIME

POSITION

point. The

located in the
DM44 Service manual.

TIME

to

more than 10 times the delay time indicated

function, this

both

modify

procedure

Operating

POSITION-Provides

switch.

POSITION-Operates

control

the reference

of

the re.terence

NOTE

your

instrument

control

move

for

making

Information

operates in

point

control

moves

point

to make the
only

the reference

this

modification

section

variable

in the

TIME

conjunction

and the

the Readout

time-

only

DELAY

is

of

the

the

I
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466/464 DM44 Operators

@

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51.

POWER-Turns

52.

HORIZ

tion

for

A: Horizontal deflection provided

sweep rate determined

switch. B sweep is inoperative.

MIX:
at a rate set
the sweep at a rate set
amounts

rates are determined
POSITION

DISPLAY-Determines

the horizontal deflection system.

The

first part

by

the A

of

the display allocated

control.

instrument

by

the setting

of

the horizontal sweep is displayed

TIME/DIV

by

the B

by

the setting

power

the

by

of

switch

and the latter part

TIME/DIV

to

each

of

the DELAY-TIME

on

and off.

mode

of

opera-

A Sweep at a

the A

TIME/DIV

switch. Relative

of

the

two

sweep

REAR PANEL

53. A

+GATE-Provides
pulse coincident with the A Sweep time, which can be
used to trigger the signal source (with TRIG MODE switch
set to AUTO).

54. B

+GATE-Provides
pulse coincident with the B Sweep time,
used to trigger the signal source after a selected delay

of

time, providing that A Sweep is triggered internally.

55.

CH

1 VERT SIGNAL

the signal applied to the CH 1

a positive-going rectangular

a positive-going rectangular

OUT-Provides

input

connector.

which

a sample

can

be

of

l

J

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J

l

A INTEN: The sweep rate is determined by the A
TIME/DIV
display
the B
provides a check
Sweep (delayed sweep) with respect

(delaying sweep).

B DL YD: The sweep rate is determined by the B
TIME/DIV
setting

DELAY-TIME

REV FEB 1982

switch. An intensified

during

TIME/DIV

of

the

B Sweep time,

switch setting.

of

the

switch

the DELAY

with the delay time determined

TIME

POSITION control.

duration

(A

TIME/DIV)

portion
which

appears

is

about

This

switch

and position

to

the A Sweep

switch and the

10 times

position

of

466/464 DM44 Operators

on

the B

by

the

the

56. EXT

crt

display. Does not affect display waveshape. Signals
with fast rise and fall provide the most
change. Signals must be time-related
stable display. Useful

calibrated modes

57.

square-wave voltage
compensate voltage probes and check vertical gain,
current probes and oscilloscope operation.

intended to verify time-base calibration.

Z-AXIS-Permits

of

operation.

CALIBRATOR-A

output

intensity modulation

abrupt

to

the

for

adding time markers in

combination

that permits the operator

current

intensity

display

It

of

the

for

un-

loop/

is

not

15

a

to

58. Line Fuse

Holder-Contains
regulating range selector. See Table
tion .

the line fuse and the

1

for

change

informa-

Fig.

8.

Rear panel controls,

connectors,

1737·08

and indicators.

59. Regulating Range

regulating range. See Table 1

60.

Line

Cord-Makes

Selector-Shown

for

change information .

the

connection

in Medium

between the
oscilloscope and the power source. The cord may
conveniently stored by

wrapping

it around the feet on the

rear panel.

61. MOD

the instrument contains an

SLOTS-A

number

option

in either slot indicates

or

other modifications.

RIGHT SIDE PANEL

62. LINE VOLTAGE SELECTOR

either 115 V

or

230 V nominal line voltage.

SWITCH-Selects

LEFT SIDE PANEL

63. Vertical Gain Controls

side

panel)-Screwdriver

each vertical channel.

64. Variable Balance Controls

left

side

panel)-Screwdriver

of

each vertical channel.

(accessible

through

adjustments to set the gain

(accessible

through

adjustments to set balance

be

left

of

16

466/464 DM44 Operators

REV FEB 1982

I

J
J

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J
J

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l

Figure

BA.

Left

side panel controls.

(2906)2037-01

:I

REV FEB 1982

466/464 DM44 Operators

17

BASIC OSCILLOSCOPE

DISPLAYS

These

most

instructions

commonly

NORMAL SWEEP DISPLAY

1. Set the

VERT MODE
VOLTS

VOL TS/DIV VAR
AC-GND-DC
Vertical POSITION

20

MHz

INVERT

TIME
A

TIME
HORIZ
X10

POSITION

controls

/DIV

BW

/DIV Switches

/DIV VAR

DISPLAY A

MAG

permit

used basic

as

follows

Vertical

Horizontal

the

operator

displays

:

CH

1

Positi

amplitude

be applied
Calibrated
AC
Midrange
Not

not
Button

Locked
Calibrated

Off

(button

Midrange

to obtain the

.

on

determined by

detent

limited

(yellow band

visible)

out

together

detent

out)

of

signal to

at 1

ms

THE

ADJUSTABLE

TO

OFFER

SITIONS. THE

HANDLE

OPERATING

PROVIDES

CARRYING

CONVENIENT,

NEXT-TO-LAST

THE

MOST

POSITION.

Fig. 9. Tilted operation.

HANDLE

STABLE

LOCKING

STABLE, NEAR-UPRIGHT,

IS

DESIGNED

OPERATING

POSITION

OF

1737·15

PO-

THE

18

466/464 DM44 Operators

@

]

l

Storage

REDUCED SCAN (PULL)
STORAGE
SAVEINTEN
SAVE
NON
VIEW

INTENSITY

LEVEL

STORE

TIME

Display

Trigger

(Both A and B if applicable)

Pushed in (466 only)
NORM

ccw

Button
Button
NORM

Fully

out

in

counterclockwise

pushbutton and adjust the CH 1 VOL
reduce the vertical display size.
display with the vertical and
trols; release the BEAM FINDER pushbutton.

4.

Set the CH 1 VOL
POSITION
area.

5.

display.

6.
POSITION control to locate the
area. Then adjust the FOCUS

control

Adjust the A

Set the A

to locate the

Trigger

TIME/DIV

horizontal

TS/DIV

display

LEVEL

switch and the horizontal

display

control

TS/DIV

Center

the compressed

POSITION

switch and vertical

within

control

within

as

needed.

switch

con-

the

display

for

a stable

the display

to

J
J

J

J

SLOPE
LEVEL
SOURCE
COUPLING
TRIG

MODE

A

TRIG

2.

Pull the POWER

the CH 1

display
INTENSITY

@

3.

Adjust

brightness. If

input

(A only)

HOLDOFF

connector.

the

INTENSITY

control

at midrange, press the BEAM FINDER

switch

the

display is

+

0

NORM
AC
AUTO
NORM

(on).

control

Connect

for

not

visible with the

1.

2.
area to

(0.5 division on each side

the signal

the desired

466/464 DM44 Operators

to

line).
setting.

3.
horizontal POSITION

the

magnified display. Divide the

to

determine the magnified sweep rate.

MAGNIFIED SWEEP DISPLAYS

Obtain a Normal Sweep Display.

Adjust the horizontal POSITION

be

magnified to

It may

be

Push the

necessary

X10

within

the center graticule division

of

the

to

change the

MAG

switch (on) and adjust the

control

for

control

center

vertical graticule

TIME/DIV

precise

TIME/DIV

to move the

positioning

setting

switch

of

by

10

19

DELAYED SWEEP DISPLAY

1.

Obtain a Normal Sweep Display.

2.

Set the

B

Trigger

3.

Pull

the intensified zone

INTENSITY

zone

distinguishable

instrument
switch
delayed sweep. Dual delayed

6.

step

HORIZ

SOURCE switch

out

on the B

control

is equipped

to a function

DISPLAY switch

to

TIME/DIV

is

the

as

needed

from the rest

with

a DM44, set the FUNCTION

other

than

to

A INTEN and the

STARTS AFTER DELAY.

knob

and turn cw until

desired length. Adjust the

to

make the intensified

of

TIME

or

displays

the display. If

1/TIME

are discussed in

for

your

a single

displays set

MODE
control
control

Trigger
Trigger
for

switch

positions

positions

7.

For

a delayed

SOURCE

SOURCE switch and

a stable display.

Differential
using

the TIME

invalid

when the B

to

STARTS

the

FUNCTION

to ALT. The DELAY

both delayed displays.
only

switch

time

measurements

or 1 /TIME

AFTER DELAY.

switch

the CH 2 delayed display.

display

to

NOTE

functions

Trigger

SOURCE

to

with

less jitter, set

the same

adjust

the B LEVEL

and

TIME

and the VERT

TIME

POSITION

The

ALT

position

measurements

of

the DM44 are

switch

is

as

not

DELAY

the

B

the A

control

set

I

I
I

4.

Adjust

the DELAY
the intensified zone to cover the
be displayed in delayed form.

5.

Set the
intensified zone noted in steps 3 and 4 is
delayed form. The delayed sweep rate is indicated by the
dot

on the B

6.

If
displays
The DM44 will indicate the time
beginning

20

HORIZ

TIME/DIV

your

instrument is

of

two

signals can be obtained at the same time.

of

the delayed displays.

TIME

DISPLAY

knob.

equipped

POSITION

portion

switch

to

with

difference

To

obtain

control

of

now

a DM44 delayed

to

move

the display to

B DLY'D. The

displayed in

between the

two

delayed

466/464 DM44 Operators

MIXED SWEEP DISPLAYS

1.

Obtain

2.

Pullout
desired sweep rate. If
DM44 set the
TIME
displays are discussed in step

3.

Set the
now

contains

display

a normal sweep display.

on the B

your

FUNCTION

or

1/TIME

is

at

for a single

HORIZ

two

sweep rates.

the

A sweep rate

DISPLAY

TIME/DIV

instrument

switch to a

while

knob

and

turn

cw

is

equipped

function

mixed display. Dual

4.

switch

to

The

first

the latter

other

MIX. The

portion

portion

to the

with

than

mixed

display

of

the

of

the

@

I

a

I

I

l

l

J

J

display

portion
POSITION

sweep
time.
the
To
switch

DELAY

displays.

mixed

Normal
on.

MODE
CH
the

visible. If

is at the B sweep rate. The start

can be changed

4.

If

your

displays

The

beginning

obtain

to

TIME

display.

1.

Preset the

Sweep Display, then turn the

Allow

2.

Set the

switch
2 OR Y
CH

1 OR X

3.

Advance

by

control.

instrument

of

DM44

will

of

the

two

mixed sweep displays set

TIME

and the VERT

POSITION

The

fl.

TIME

is equipped with a DM44, mixed

two

signals can be obtained at the same

indicate the time difference between

B sweep

control

control

X-Y DISPLAY

instrument

several minutes

TIME/DIV

to

CH

input

connector

input

the

INTENSITY

the

display

controls

for

switches

2.

Apply

connector.

is

not visible

of

the B sweep rate

adjusting the DELAY

portions

MODE

instrument

and the horizontal signal to

of

the

two

the

switch

positions

positions

to

the vertical signal to the

control

only

as

given in step 1

instrument

warm-up.

X-Y and

until

the

with

the INTENSITY

TIME

displays.

FUNCTION

to

ALT.

The

both

mixed

the CH 2

of

power

the

VERT

display

is

control
and adjust the CH 1 and CH 2 VOL
the display
tally. Center the compressed

controls (CH 2 POSITION vertically, Horizontal ·
POSITION horizontally); release the BEAM FINDER
pushbutton. Adjust the FOCUS
display.

at midrange, press the BEAM FINDER pushbutton

TS/DIV

is

reduced in size, both vertically and

display

control

switches until

with

the POSITION

for

a well-defined

horizon-

SINGLE SWEEP DISPLAY

1.

Obtain a Normal Sweep Display. For random
signals, set the
approximately the same
random signal.

2.

Push the SINGL SWP
switch. The next trigger pulse starts the sweep and
displays a single trace. If
READY lamp lights, indicating the A Sweep Generator
circuit

is

3.

After the sweep
out"

and the READY lamp is out. Press the
button
display.

to prepare the

trigger

set and waiting

circuit

is

to

trigger

amplitude

button

no

triggers are present, the

to

be triggered.

complete, the

circuit

for

on a signal that

and

frequency

on the A TRIG

circuit

is

SINGL

another

single-sweep

is

as

the

MODE

"locked

SWP

@

466/464 DM44 Operators

21

STORAGE DISPLAYS

STORAGE

1.

Obtain a normal display

(see Normal Sweep Display

of

Displays section

2.

Set the STORAGE LEVEL and VIEW TIME controls
NORM. Set the SAVE switch button out. Select either
PERS

or

FAST mode.

this manual).

of

the signal to

in

the Basic Oscilloscope

be

measured

to

VAR

4.

Set the INTENSITY control
brightness. Set
display (depends on the amplitude and speed of the signal
to be viewed). Set the VIEW TIME
display retention (persistence) in the VAR PERS mode
for

the time between erase cycles in the FAST mode.

5.

Push the ERASE button. The display is erased,
except in the SAVE mode, and the storage and
circuits are reset.

the

STORAGE LEVEL

for

adequate

control

control

for

optimum

for

the desired

display

or

trigger

SAVE STORAGE

1.

Obtain a Storage Display using steps 1

through

4.

I

I

a.

In general,

VAR

PERS

100 µs/division.
b.

When using the
B DL Y'D
control
rate.

3.

Push the ERASE button.
storage and
display.

22

better

mode

horizontal

to

BENDS A for

trigger

NOTE

results are

for sweep speeds slower than

combination

display, set A TRIG HOLDOFF

maximum

circuits

obtained

of

FAST storage

display repetition

Allow

a few seconds for the

to

automatically provide a

using the

466/464 DM44 Operators

and

2.

Immediately after the event is ·stored, push in the

SAVE button, providing a longer viewing time. The SAVE

INTENS

the display brightness decreases the viewing time.

be
TIME setting), this reduces maximum viewing time.

control
control

control

Pushing the SAVE button, after the event is stored, can
delayed

Maximum viewing time occurs when the SAVE INTENS

is

only

3.

Erase

adjusts the display brightness. Increasing

up

to

several seconds (depending on the VIEW

set

fully

counterclockwise, advancing the

long enough

is

disabled in the SAVE mode.

to

view the display.

@

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SAVE RANDOM EVENTS

1.

Obtain a Storage Display using steps 1 through

with a test signal similar

not

mode,

2.

3.

4.

5.

random event occurs, push the SAVE button.

VAR PERS.

Set

the

SAVE INTEN control
Replace the test signal with the random event.
Push the ERASE button.

When the READY lamp comes on,

to

a random event. Use the FAST

fully

ccw.

but

4,

before the

6.

After the random event
storage
mode.

circuitry

will automatically

occurs

and is stored, the

switch

to

the SAVE

REDUCED SCAN STORAGE (466 ONLY)

To

obtain a greatly increased
the INTEN control to operate the 466 in the reduced scan
mode. In the reduced scan mode the instructions
obtaining storage displays are unchanged. The
difference in operation
referenced to the smaller graticule in the center
(see item
section
within this smaller graticule when operating in the reduc­ed scan mode.

11

b in the Controls, Connectors, and Indicators

of

this manual). All measurements should be made

is

writing

that the deflection factors are

rate, pull

of

out

the

on

for

only

crt

J

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@

466/464 DM44 Operators

23

Except
TIME
under

for

and

1/TIME

Delayed

DM44 DISPLAYS AND MEASUREMENTS

the

TIME

and

1/TIME

functions

or

Mixed Sweep Measurements.

RESISTANCE

functions,

are discussed in the Oscilloscope

the DM44 is

independently

usable

Applications

anytime

and Measurements section

the

oscilloscope

TABLE

Resistance Ranges

is

turned

of

this

on.

The

manual

E

2

The

meter
measure voltage
mode

of

operation

ed

in)

and

rms.

1.

Push in the

20

MO RANGE

2.

Connect

resistance.

3.

Reduce

proper

readout is obtained.

24

may

if

the

applied

OHMS

button.
the + and

the

range,

be

damaged

the

meter

(OHMS

voltage

FUNCTION

See Fig. 10.

COM

using

by

attempting

is in the resistance

FUNCTION

is

the

button

in excess

button and the

leads

to

following

to

push-

of

120 V

A

the

unknown

table, until a

466/464 DM44 Operators

any

tion

A

is normal.

RANGE

20

MO

2 MO

200 kO

20

kO

2 kO

200 0

blinking
unknown
and a need

blinking

.

READOUT

20.00-02.00

2.000-0.200

200.0-20.00

20.00-02.00

2.000-0.200

200.0-000.0

readout on

resistance, indicates an overrange

to

readout, when meter leads are

select a

any

higher

MEASUREMENT

20

M0-2

2

M0-200

200

k0-20

20

k0-2

2

k0-200

200

0-0

range, when connected

range.

disconnected

MO

kO
kO

kO

0

0

condi-

to

@

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RANGE

Fig. 10. Resistance.

466/464 DM44 Operators

SELECTION

(465/DM-0-2)2039-9

25

I

VOLTS

The

maximum

peak

ac)

+

input

the

maximum

The
peak

ac) to chassis.
meter

The
measure voltage
mode

of

excess

If

(indicating
to

of

the reading exceeds 1200 V

prevent

safe

between

and

COM

may

operation

120 V rms.

overrange)

possible

input

the+

chassis.

floating

be

damaged

if

the

and

disconnect

meter

and

voltage

COM

voltage

meter

the

damage.

is

±1200 V (de+

inputs

or

between

is

±500 V (de+

by

attempting

is

in the resistance

applied

or

voltage

the readout blinks

the+

lead at once

3.

Reduce the range, using Table

readout is obtained.

NOTE

When

no

voltage
ranges, the
elements

meter

2 V ranges.

to

is

in

A
overrange
range.

may

leads

blinking

condition

readout

blink. Also,

may

increase the

readout

is

applied

is

0000

and

noise

readout

on

any

and a need

TABLE

Volts Ranges

3

3,

until a proper

in the 20 V to 1.2

individual

picked

range indicates an

to select a

readout

up

by

in the .2 V

higher

kV

the

and

1.

Push in the VOL TS

1.2 kV RANGE button. See Fig.

2.

Connect the
{usually a
unknown

ground

voltage

COMMON

or

to

be measured and observe the reading.

FUNCTION

test point) and the HIGH lead to the

26

11.

lead

button and the

to

the reference point

466/464 DM44 Operators

RANGE

1.2 kV
200 v

20 v

2V

200 mV

READOUT

1.200-0.200

200.0-020.0

20.000-02.00

2.000-0.200

0.200-0.000

MEASUREMENT

1.2

kV-200

200

20

2
.2

V-20
V-2

v-.2

V-0

V

V

V
v
V

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466/464

Fig. 11. Volts.

DM44

Operators

(465/DM-0-3)2039-10

27

TEMPERATURE

the device
removed

These items

probe

from

manual,

to

be measured, a

the

device

and

other

which

should

by

probe

thermal

the

information

be reviewed.

gradient,

probe,

etc.

heat

I

are in the

The

maximum

surface

ground.
The

sensor
subjected
sensor

If
the

the

probe

tip

reading

safe voltage

is

±400

V (de +

tip

is fragile

to excessive stress.

should

exceeds

at

once

not

to

prevent

and

exceed

-55°

on

peak

may

20

C

probe

the

ac)

above chassis

break

Force

exerted

pounds.

or

+150°

damage.

measurement

if

dropped

C,

or

on

the

remove

The DM44 is calibrated to its
accurate readings
The DM44
probe.

In

the

following

to

verify water temperature.

the

melting

by

changes in

Accuracy Check

within

2°C

for

should

temperature and the

be recalibrated

checks, use an accurate

Anything

altitude

and

barometric

original

examples that

boiling

probe,

to

any replacement

thermometer

in

solution

point

pressure.

giving

follow.

affects

is affected

Low Temperature

1.

Push in the TEMP

Fig. 12.

2.

Apply

the temperature

measured so the
the device
Table 4 to convert the reading
fahrenheit.

Temperature

such

as the

flat

to

be measured and observe the reading. See

accuracy

angle

28

l __________________________________________________________________________

I

surface

NOTE

is

of

contact

(°

C)

FUNCTION

probe

of

the

affected

between

to

the device to

probe

tip mates against

from

by

several factors

the

button. See

to

be

centigrate to

bottom

probe

and

466/464 DM44 Operators

indicating

Allow a container

melt

until

there are

To

prevent

sealed

Put the

possible

portion

of

of

probe

tip
the container. Wait
the probe has reached the water temperature.

(preferably insulated)

only

a few pieces

of

crushed ice

of

ice remaining.

~

probe

damage,

the

probe

is

into the water, avoiding the side

for

be

immersed

the readout

sure

only

(see Fig. 12).

to

stabilize,

the

or

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APPLY

SILi

TO

THE

MEASURED

su~~~E

(W

GREASE

CE

TO

HEN

BE

POSSIBLE).

J

SLM

@

~

JXJ

F"

ig. 12. Tempe rature.

466/464 DM44

Operators

29

CENTIGRADE

FAHRENHEIT

-

50

I I

11111111111

l1111l'l'

-

50

CENTIGRADE

-

40

liiljilill"'ll'"

'I''''''''

-40

-30

TABLE

TO

FAHRENHEIT

-

30

'II'

-20

4

liilll'l'liljlii

'II''''''

-10

CONVERSION

-

20

111111111111 111111111 I

I'

0

-10

'I' '11j11111

10

20

11

0

"I'

11I

30

I
I

CENTIGRADE

FAHRENHEIT

CENTIGRADE

FAHRENHEIT

CENTIGRADE

FAHRENHEIT

1738-35

30

0

1

,,,,

,

1

1

""

1

40

50

1·1111· '''I'''''''''

130

100

I··

1·11

11r111

'I

220

10

••

,,,,,

11111111111

50

•

,,,

1111

60

1'"'1" 11

60

l""I

140

150

110

•1·1··1•11•111111111· 1·I·1111111111111111111

11

11

t

11

n

1111

n I

Iii

230

240

466/464 DM44 Operators @

20

,,

,1,,

,

11111

1

70

70

,,,.

1111H111111111q 111111111111111111111r11111111

,,,,

1

160

120

11111111

1 1 T 1 1 n

250

30

1,

,·11111111111!•

11

1"'

80

I

"'1

90

1111

1111

100

80

.,,

1.,1''

170 180

190

130

11

11

11

1 1

260

270

280 290

40

111

1

1

11

90

''I''

200

140

111

1111 1111Ir11

1·11

"1"

110

''II''

1

11

"'I'

120

210

11

n I '

300

50

,

,1

100

'I 1111111111q1111111r111

150

I:

E

E

I:

I:

I

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The

readout should be
ice remaining after the test to verify that inserting the
probe

did

not

raise the water temperature.

High Temperature

Bring

water

to

a slow boil (to prevent splattering). Put

the

probe

tip

into the water, avoiding the side

the

container. Wait

the

probe

has reached the water temperature.

for

-2°

C to 2° C. There should

the readout

or

bottom

to

stabilize, indicating

be

The readout should be between

clean water at sea level.

TIME AND

of

See

DM44

MEASUREMENTS in this manual.

DELAYED

98°C

1/TIME

OR

MIXED

and 102°C

SWEEP

for

J
J

@

466/464 DM44 Operators

31

APPLICATIONS AND MEASUREMENTS

Refer

to

Basic Oscilloscope Displays

as

needed

to

obtain

correct

displays.

I

PRELIMINARY

Signal Ground

~

Avoid

cross-grounding

may occur.

The most reliable measurements are made when the
oscilloscope
under
ground
on the
with

the

ground

test by the

lead can be connected to the

oscilloscope

unit

ground

under

Input Coupling Capacitor Precharging

In the

GND

position,
ground
precharging network.
Coupling
level
voltage transients
applied

through

capacitor

of

the signal applied

to

the

a one-megohm resistor

amplifier

because instrument damage

is

connected

strap on the signal probe. Also a

chassis

test.

the

This

to

charge to the average de voltage

accidentally

input. The precharge network also

to

the

ground

ground

to

establish a common

input

signal

network

to

the probe. Thus, any large

allows the Input

generated will not be

of

banana jack

is

connected to

to

the

ground

form a

unit

of

provides a measure
by

reducing the

external

probe
de level than that previously applied, especially
level difference is more than 10 times the VOL
setting.

set the

Wait several seconds
discharge.

capacitor

remain on the screen so the ac

can be measured in the

circuitry

The

following

tip

is connected

1.

Before

connecting

Input

Coupling

2.

Touch

the probe

3.

Connect

4.

Wait several seconds

5.

Set the

the probe

to charge.

Input

protection

current

levels that can be

during

procedure

to

switch to GND.

tip

for

Coupling

normal

capacitor

a signal source having a

the probe

to

the

tip

to the external

drawn

charging.

should be used whenever

tip

to

a signal source,

oscilloscope

Input

to the signal source.

for

switch

component

manner.

chassis

Coupling

the

Input

to

AC.

The

capacitor

Coupling

display

of

the

circuitry
from the

the

different

if

the de

TS/DIV

ground.

to

will

signal

I
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I
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32

466/464 DM44 Operators

@

I

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J

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OPERATOR'S

ADJUSTMENTS

AND CHECKS

To

verify

measurement accuracy, perform the

ing

checks
ment. See the
for

calibration

Trace Rotation Adjustment

Normally
using
switch
vertical deflection. Adjust
driver
the trace

and adjustments before

Calibration
information.

not required. Obtain a

only

steps 1

to

GND

adjustment

with

through

to display a

located below the

the center horizontal

section

3.

the

making

of

the Service manual

Normal

Set the CH 1

free-running
TRACE

ROTATION

crt

graticule)

graticule

follow-

a measure-

Sweep Display

input

Coupling

trace with no

(screw­to

align

line.

--

I~-+--+--+-~--+--+--+---+--+----,

100... . ..

I

--

~~-+---+--~,___,.-+-~-+-..,--+-.--+--.--+--+-~

'--

• I

10~...j_-+..-L....j.___J_-+---L--+--L-........,-+---'--+---+-~

r ·

r.~

IL__--+--+--+-----1--+---+--+---t--t-___J

· ·

'--

--

r.-

_.,_

,_

.C'~

'--

--

....

'

· ·

--

,

__

---

.c-.

· · · . C UNDER COM-

CORRECT

FLAT

OVER COM-

PENSATED

(OVERSHOOT)

PENSATED

(ROLLOFF)

1737·17

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L.

Probe Compensation

Miscompensation
operator
adjustments
Probe

calibrator
VOL
to
rolloff,

@

-

error. Most attenuator probes are equipped

to ensure

compensation

Obtain

DC.

a Normal Sweep Display presentation of the

square-wave voltage. Set the appropriate

TS/DIV

switch to

Check

the waveform presentation

and if necessary, readjust

is

one

of

the greatest sources of

optimum

is

accomplished

.1 V position

with

measurement accuracy.

as

follows:

and the

compensation

Input

coupling

for

overshoot

466/464 DM44 Operators

for

or

flat

Fig. 13. Probe

tops

on

the waveforms.

for

method

Vertical Gain Check

Obtain a Normal Sweep Display presentation
calibrator square-wave voltage. Set· the appropriate
VOL TS/DIV switch to the 50 mV
Coupling
control
deflection

of

compensating the probe being used.

switch to DC. Make sure

is

in the calibrated detent.

is

5.8

to

6.2 divisions.

compensation.

See

Fig.

13.

Refer to probe manual

position

the

Check

and the

VAR VOL

that the vertical

of

the

Input

TS/DIV

33

Basic 466/464

Obtain a Normal
5 ms position. Set the A
Push the TRIG VIEW
sample
control
the
position

14). Verify the

1

of

to

display

the left peak

~-------

._,.-+-~

O<?

...•

Timing

Display. Set

switch

the line voltage. Use

vertically

area. Use

position

horizontal

I I

6.53

TO

\

\

10------~--_,_

I

~..

. . . . . .

..........

..__..__'"""--l,__..

...

Fig. 14. Basic 466/464

Check

Trigger

and

the

the

horizontal

to

the

distance

9.8

TO 10.2

6.79

~--+-._..

..

...

,

...

..

...

...

..

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

...

..

(60 Hertz Line Only)

the A TIME/DIV
SOURCE

hold

top

left

graticule

_____

timing

switch

it in. This displays a

the A Trigger

of

the

display to

position

edge (see Fig.

between the first and

_____

---+-+-'--+-~+--+-1

(

1738-14)2037-14

check.

switch

to

LINE.

LEVEL

within

control

...,.

to

to

the

fourth

peaks is 9.8

not

visible, verify the

is

first

and

the

third

peaks is 6.53

DM44

accuracy

Check

Timing

Perform the Basic 466/464

Leave

except

TIME/DIV

B

HORIZ

B SOURCE
FUNCTION

6.

TIME

Push the TRIG VIEW
DELAY
point
Point
measurement
on
is 16.49

to
A). Use

the

TIME

next

to

Check (60 Hertz Line

of

the

horizontal

controls

DISPLAY

the

16.84 and

set

as

follows:

POSITION

center

the

ALT

point

cycle

(see Fig. 15,

horizontal

to

the

to

10.2 divisions. If

horizontal

to

Timing

deflection

as

for

the

Basic 466/464

5µs

AINT
STARTS
TIME
To

move
measurement
right
point.

button

DELAY

the

ms lamp is I it.

control

graticule

control

center

Point

and

to

horizontal

the

fourth

distance

6.79 divisions.

between

Only)

Check
system.

of

move the reference

B). Verify

to

verify

Timing

AFTER DELAY

the

time-

point

to

the

reference

hold

it in. Use

line (see Fig. 15,

to

move the

graticule

the

readout

peak

the

the

the

the

time-

line

I
I

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34

466/464 DM44

Operators

@

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100····

External Horizontal Gain Check

the Basic Oscilloscope Displays procedure
Normal
voltage waveform; then, set the
With the

...

~-··

9a-\-+-

(If

X-Y

A__)

't..

operation

Sweep Display

calibrator

....

····~

\

\ :: I\:

....

Fig. 15. DM44

is

to

be used.) Use

of

signal connected to the CH 1

....

~

.._~,......_-+-~---11

•

1

..

..
..

,_·

...

..

..

timing

check.

~teps

the

calibrator

TIME/DIV

(1738-15)

2037-15

1through3

for

obtaining a

square-wave

switch

to

OR

of

X-Y.

input

connector and the

50

mV,

the crt display

horizontally by 5.75 to 6.25 divisions.

CH

1 VOL

should

TS/DIV

be

two

dots separated

PEAK-TO-PEAK VOLTAGE

MEASUREMENTS-AC

Obtain a Normal Display. Make sure the VAR

VOL TS/DIV

position the display so the

horizontal graticule line (see Fig. 16,
position the display so one
with

the center vertical

Measure the vertical deflection from peak-to-peak (Point
A

to

Point B).

If

trace
signal.

tained

of

X

the measurement.

control

the amplitude measurement

is

thick

a more accurate

by

measuring from the

a valley. This

as

a result

will

is

in

the

graticule

NOTE

subtract

calibrated detent. Vertically

lower

portion

of

the

line (see Fig.

of

hum

measurement

top

the trace thickness from

coincides

Point

A).

upper

peaks coincides

is

critical

and/or

noise on the

can be

of

a peak to the top

switch set to

with

a

Horizontally

16,

Point B).

or

if

the

ob-

l

@

466/464 DM44 Operators

35

POSITION
CENTERLINE

TO

Example: The peak-to-peak vertical

measured is 4.6 divisions (see Fig. 16)

switch

setting

Using

the

Volts

Peak-to-peak

of

.5.

formula:

vertical
deflection
(divisions)

X

deflection

with

a VOL

VOLTS/DIV

setting

TS/DIV

I
I

I

•

10-

I

0

•...

Multiply

TS/DIV

VOL
factor
factor

36

........

~-.....--~------""-------~--

MEASURE

Fig. 16. Peak-to-peak voltage

the vertical

switch

of

the

switching

setting. Also

probe

connector.

FROM A

deflection

if the

AMPLITUDE

TO

probe

..........

-..+~-+

B (1738-16)2037-16

of

a waveform.

just

measured by the
include
does

the attenuation

not

have a scale-

466/464 DM44

Substituting

Volts Peak-to-Peak

the given values:

INSTANTANEOUS

MEASUREMENTS-DC

Obtain a Normal

TS/DIV

VOL

To

measured, set the

vertically

input

the
above
waveform moves
is negative.

Operators

control

determine

position

coupling

the

center

= 4.6 X 0.5 V = 2.3 volts.

VOLTAGE

Display. Make sure the VAR

is in the calibrated detent.

the

polarity

input
the baseline to
switch

to

of

the crt, the

to

below

the

of

coupling

the

DC. If

voltage

center

the

switch

center

the

waveform moves

is positive. If

of

the

voltage

crt, the voltage

to

of

GND

the

to

be

and

crt. Set

the

to

@

I

I

I

J

l

J

]

l
l

Set

the

input

coupling
baseline
voltage
baseline

divisions
and
Multiply
setting.
probe

4.6
reference line, and the

to a convenient

to

be measured is positive, then

to

the

Switch

EXAMPLE:

Using

the

of

the

desired

the

Include

does

divisions

the

Instan-

taneous

Voltage

vertical

not

bottom

Input Coupling

deflection

point

veritcal

formula:

deflection

the

attenuation

have a

The

(see Fig. 17), the waveform is above the

vertical

distance

(divisions)

switch

to

GND

and

position

reference line. For

graticule

on the waveform (see Fig. 17).

scale-factor

vertical

VOL

line.

Switch

between the reference line

by

the VOL

factor

switching

distance

TS/DIV

X

polarity

examplE:l,

position

to

DC. Measure the

TS/DIV

of

the

probe
connector.

measured is

switch

is set

VOLTS/

X DIV

switch

to

setting

the

if

the
the

if the

2.

£._

:~GATIVE

REFERENCE

LINE

©--/

I

100

..

I

90-+----+-...---+®

--+--+--t--+-+-+--r+--f+11r-t--+-t--+--+-++-,-t--

T----

VERTICAL C

DE

FjLECTI

---

---

:r_+----+-.........,__._-+--"""---+~-+--'--+-~+----l

-~

=~"-~·

Fig. 17. Instantaneous voltage measurement.

B I MEASURE

,__

..,.\,-t--t-t-+-1-+--t--+-t

l

f-----t-

·-·~~~-~~-~~~

1737·05

AMPLITUDE

A TO B

A~~ti~~v~E

TO

B

J
J

l

Substituting:=

If a negative voltage is

trace

to

the top

graticule

Fig. 17).

The

by

switching

@

ground

reference

to

the

4.6 X

(+1)

X 2 V = 9.2 volts.

to

be measured,

line and measure from C

line

can be checked at

GND

position.

position

466/464 DM44 Operators

to

any

the

B (see

time

This method can also be used

with

to

a convenient reference line. Measure the
vertical deflection between the reference line and
other
given.

respect

to

another. Position one

voltage level.

Substitute

to

measure one voltage

of

the voltage levels

this value in the

divisions

formula

of

the

just

37

ALGEBRAIC

In the

ADD

position

waveform displayed

to

applied

CH 2 INVERT switch is pushed, the waveform displayed

the difference
inputs (CH 1 - CH 2).
ADD
either
switches are set to-the same position).

the CH 1 and CH 2 inputs (CH 1 +

mode

is equal

VOL

TS/QIV switch (when both VOL TS/DIV

is

of

the signals applied

to

ADDITION

of

the VERT MODE switch, the

the algebraic sum

The

total

deflection

the

deflection

of

the signals

C~

to

the CH 1 and CH 2

factor in the

factor

indicated

2). If

th.e

1s

by

The

following

when using the

1.

Do

oscilloscope.

2.

Do

not

about

eight

example,
voltage applied
four

with

volts. Large voltages may

general precautions

ADD

not

exceed the

apply

times the VOL

a VOL

to

that

mode.

signals

TS/DIV

channel

should

input

voltage rating

that

exceed an equivalent

TS/DIV

switch

switch setting

should

distort

not

exceed

the display.

be observed

of

the

of

settings. For

of

0.5, the

about

I

I

I

38

ov

100

90

1?

0

I

r

I

L

·~

t

I

I I I

POSITIVE

LEVEL

(A)

CHANNEL 1 SIGNAL

WITH 3
POSITIVE

v

DIVISIONS

DC

I

LEVEL.

OF

/'

i

I

100

I

90

OV

l

I

'

I

1?

0

I

Fig.

466/464 DM44

NEGATIVE

OFFSET -

I

I

(B)

CHANNEL 2 DISPLAY

WITH 3
NEGATIVE

18.

Algebraic addition.

'--1--->--

I

I

DIVISIONS

OFFSET.

Operators

OF

I

100

I

90

I

I

10

I

0

I

I

I

L_i

)

/'

/

I

(C)

)

.

j

RESULTANT

I/

.

I/

DISPLAY

I

j

I

I

I

---

I

I

@

I

J

J

J

]

J

l

l

l

l

common

A

for

offset

EXAMPLE: The Channel 1 signal is on a 3 division,
positive
Fig. 18A.

setting
de level
of
The
operating

to

the

value determined, to Channel 2 input. See Fig. 188.

ADD

COMMON-MODE

The

ADD
contain
components
rejection.
should

contains
19A).
following

INVERT

be observed.

EXAMPLE: The signal applied

To

1.

Connect

2.

Set

@

use

of

the

ADD

mode is

a signal riding on a de level.

de

level (using the center line
Multiply
determine

(or

a positive level using the CH 2

mode

range

3 divisions by the VOL

the de-level value.

puts the resultant

of

the POSITION controls.

to

provide a de

as

zero volts). See

TS/DIV

Apply

a negative

INVERTswitch),

display

within

REJECTION

mode can be used to display signals that

undesirable components. These undesirable

can be eliminated

The

precautions given

unwanted

remove the undesired

procedure.

the

switch

line frequency

a line

frequency

VERT MODE switch

to on (button in).

through

under

algebraic

to

components

components

signal

to

to

ALT

Adjust

common

addition

the

CH 1 input

(see Fig.

use the

the

CH

2 input.

and the CH 2

the CH 2

466/464 DM44 Operators

switch

the

mode

10

CH 2

SIGNAL

FROM

LINE

FREQUENCY

SOURCE

(INVERTED)

SIGNAL

LI

WITH

~~~~6~~~~CY

CANCELED

OUT

//

0...

I

"

(A) CH 1

I

10<?····

~--+---+-+---+-+--+-+----+--~--1

----··-··--

l+H++++++l'++-++4+-~++++l+l+H+++~l++++++~"++-i

--

._

_____

10--+----+--+----+--+---+--+---+--+----I

I

~

...

(B)

RESULTANT

Fig. 19. Common-mode rejection.

'-;'-

. . . . . . . . . .

AND

CH

2 SIGNALS.

-

...

-------

-------- ------·

SIGNAL.

--

1738-19

39

meas.

ll.

,_ 2 ...

L

L.il. . L

.L

C.£$4

LJ

..

J.

.•

J

VOL

TS/DIV
display
portion

3.

readjust the CH
cancellation

198).

and VAR VOL

is

about

of

the CH 1 display (see Fig. 19A).

Set the VERT

of

AMPLITUDE COMPARISON

TS/DIV

the

same

MODE

2 VAR VOL

the undesired signal

TS/DIV

controls

amplitude

switch

control

component

MEASUREMENTS

so the CH 2

as

the undesired

to

ADD. Slightly

for

maximum

(see Fig.

Determine the vertical conversion factor using this

formula:

reference signal amplitude (volt)

Vertical

Conversion

Factor

Determine the

formula:

vertical

deflection

(divisions)

arbitrary

VOLTS/DIV

X switch

setting

deflection factor using the

I

I

I

If comparisons
signal are repetitious (e.g., on an assembly line test) it
possible to obtain more accurate easily read
measurements if

to

set the reference signal

unknown

The
compared with
divisions.

Other
disturbing
establishing a vertical conversion
deflection factor. The
must
established.

40

be

known

unknown

the setting

of

an

unknown

the

VAR VOL

to

signal can then be

or

adjusted to an exact

signals may be measured

of

the VAR VOL

amplitude

before a vertical conversion factor can be

signal with a reference

TS/DIV

an exact

control is adjusted

number

quickly

TS/DIV

factor

and

of

the reference signal

of

divisions.

and easily

number

without

control

an

466/464 DM44 Operators

by

arbitrary

is

of

Arbitrary

Deflection

Factor

To

measure the

VOL

TS/DIV
vertical
not

readjust the VAR VOL
vertical
of

the

switch to a setting that provides

deflection

deflection

unknown

Signal

Amplitude

signal using the

Vertical

Conversion X

Factor

amplitude

to

make an accurate measurement.

in divisions and calculate the

of

an

TS/DIV

Arbitrary

deflection

factor

VOLTS/DIV

switch

setting

unknown

control. Measure

following

X deflection

signal, set

formula:

Vertical

(divisions)

the

sufficient

Do

the

amplitude

@

I

I

I

I

J
J

Signal

Amplitude

EXAMPLE:

volts

30
VOL

TS/DIV

tion

of

4 divisions.

=

with

Vertical

Conversion

Factor

The

reference signal

a VOL

TS/DIV

control

adjusted

or

VOL

TS/DIV

X

switch

setting (divisions)

switch

to

provide

X

amplitude

setting

of

a vertical deflec-

deflection

5 and the VAR

Vertical

measured is

TIME/DIV
display
horizontal graticule line (see Fig. 20).

Measure the horizontal distance between the time
measurement points.
the

setting

is used, divide this answer

switch

to place the time measurement

of

the

TIME/DIV

for a single

Multiply

switch. If sweep
by

event and

the

distance

10.

position

points

to

measured

magnification

the

the

center

by

J

l

l

l

l

J

..

Jl

X

Substituting

factor

formula:

Vertical

Conversion

Then

with

to-peak

can be

amplitude

determined

Signal

Amplitude:

TIME-DURATION

Obtain a Normal

TIME/DIV

@

kJ,,

...

control

,.JUJLL"'hbLJ

these values in the vertical conversion

Factor

a VOL

TS/DIV

of

an

by using the signal

30

4XS

switch

unknown

setting of

signal, 5

1.5

1,

divisions

amplitude

the peak-

= 1 V X 1.5 X 5 = 7.5 volts.

MEASUREMENTS

Sweep display. Be sure the VAR

is set to the

k.

JU

calibrated

L.." , ..

.EL.

detent. Set the

466/464

..

l

high

formula:

DM44

.&!Z

I

100

I

90

I

I

®""

/

,V

I

0

I

I

Operators

I

1/·

-

~.-

..

~

r\'

\

\

\

HORIZONTAL

DISTANCE

Fig.

20.

~

\

~

\

\

"-

-I

Time duration.

. '

®~

ti

V!

j I

I

v

I/

MEASURE

TIME FROM

ATO

1737-18

B

41

EXAMPLE: The distance between the time measure-

ment

points

is

8.3 divisions (see Fig. 20) and the TIME/DIV

switch is set to 2 ms

with

the

magnifier

off.

Frequency

= time

duration

16

.6 ms

= 60 hertz

I

Using the formula:

Time

Duration

Substitute the given values:

Time

Duration

horizontal

distance X

(divisions)

magnification

= 8.3 X 2 ms = 16.6 milliseconds

FREQUENCY MEASUREMENTS

Time

Duration measurements can be used to determine

the

frequency

1.

Measure one cycle

Time-Duration

2.

Take the reciprocal

mine the frequency.

EXAMPLE: The

which

has a time

of

a recurrent signal

of

the

Measurements.

of

frequency

duration

of

waveform

the

time

of

the signal shown in Fig. 20

16.6 milliseconds is:

Time/Div

setting

as

follows:

as

described in

duration to deter-

RISETIME MEASUREMENTS

Risetime measurements use the same methods
duration
made between the 10% and 90%
Falltime is measured between
the

a sweep speed setting
events (if possible) and be sure the VAR
is in the calibrated detent. Set the VOL
VAR
division display. Set vertical

bottom

touches

the risetime spread
Horizontally

waveform intersects the second vertical graticule line (see

Fig.21).

measurements,

trailing

Obtain a Normal Sweep Display. Set A SLOPE

Set the

edge

control

(or signal

touches the

the 100%

TIME/DIV

position the

of

graticule

except

the

the waveform.

that

displays several cycles

amplitude)

positioning

0%

graticule

line (see Fig.

switch

for

a single-event display

horizontally

display

the measurements are

points

of

90% and 10% points on

TIME/DIV

TS/DIV

for

line and the

as

much

so the

10%

as

time-

the waveform.

to+.

Use

control

switch and

exactly

so the

21

display

).

as

possible.

point

a five-

display

top

with

on the

or

I
I

I

I

42

466/464 DM44 Operators

@

I

Using the time

duration

formula

to

find

risetime:

l

J

l

l

l

J
J

I

...

I

w

..Jo

<{

::::>

z!::::

(.!)...J

-

Q.

c:n::!:

<{

~@,

0

I

L

90%
setting

and
TIME/DIV

lJ

~-

Measure the

points

of

the

EXAMPLE: The

90%

points
switch

..

)'

,,

/

horizontal

and

multiply

TIME/DIV

is 5

is set

I

--··

···®~

~

~,,,,,.

V:

~""

)""

..

HORIZONTAL

DISTANCE -

Fig. 21. Risetime.

distance

the

distance measured

switch.

horizontal

distance

divisions

to

1

µs.

/

....

MEASURE

TIME

....

1737•14

between

(see Fig. 21) and

the

between

10% and

the

ATO

by

FROM

B

the

10%

the

Time

Duration

(risetime)

Substituting the given values:

Risetime

= 5 X 1

horizontal

distance

(divisions)

µs

= 5

TIME/DIV

X

microseconds.

setting

TIME-DIFFERENCE BETWEEN

TWO PULSES FROM

DIFFERENT SOURCES

Obtain a Normal Sweep Display. Make sure the VAR
TIME/DIV
Trigger
signal to CH 1 and the
the
with

control

SOURCE switch

signals

to

the

input

equal time delay.

is

in the

to

comparison

connectors

calibrated

CH

1.

Connect

signal

using

detent. Set the A

the reference

to

CH

2.

Connect

probes

or

cables

l

@

466/464 DM44 Operators

43

Set the VERT
general,
and the
signals.

signals.

the

divide

CHOP

ALT

Center

Measure the

Multiply

TIME/DIV

this answer by 10.

CHANNEL

I

....

I

0

9

I

LEVEL

. . . .

50%

100

A MPLITUDE

\

0

I

0

....

I

Fig. 22.
sources.

Time

MODE

is more

position

each

of

horizontal

the

measured

switch; if sweep

1 (REFERENCE)

\

. . . .

·\

\

~@

F:.

I I

. . .

. . . .

.

...

HORIZONTAL

~

-

difference

DIFFERENCE -

switch

suitable

is

more

the

displays

....

-

-

-

-

. . . .

,

between

to

either

for

low-frequency

suitable

vertically

difference

difference

magnification

. . . .

. .

,......-

)

®

.

...

. . . .

I

I

r-t

I

two

CHOP

or

ALT. In

signals

for

high-frequency

(see Fig. 22).

between the two

by the setting

CHANNEL2

/

of

is used,

I

L

. . . . .

...

MEASURE

TIME FROM

ATO

B

. . . .

1737

15

pulses from different

EXAMPLE:

MAG

switch

waveforms

Using

Difference

Substituting

Difference

TIME

If

comparisons
signal are
possible
measurements if the VAR
set the reference signal to an

unknown

The

compared
divisi_ons.

The

TIME/DIV

to

is 4.5

the

Time

Time

X10 and

formula:

the

given values:

the

divisions

Time/Div

60 µs X 4.5

horizontal
(see Fig. 22).

setting

10

COMPARISON MEASUREMENTS

of

an

unknown

repetitious

to

otbain

signal can then be

with,

(e.g., on assembly line test) it is

more

TIME/DIV

or

adjusted to, an

switch

magnification

exact

is set

to

50

µs,

difference

horizontal

x

difference
(divisions)

22.5

signal

with

accurate, easily read

control

number

quickly

exact

between

microseconds

a reference

is adjusted

of

divisions.

and easily

number

the

I

I

I

I

'

I

to

I

of

44

466/464 DM44 Operators

@

I

J

J

Other
disturbing
establishing a horizontal
bitrary
reference signal
conversion

unknown

the setting

deflection

factor

signals may be measured

of

factor. The time
must
can

ba

the VAR

conversion

be

known

established.

TIME/DIV

factor

duration

before a

without

control

and an ar-

horizontal

of

by

the

horizontal deflection in
duration

using the formula:

Time

Duration

divisions

arbitrary

deflection

factor

and calculate the

horizontal

X

deflection
(divisions)

time

J

J

J

l

J

J

l

Determine

formula:

Horizontal

Conversion

Factor

Determine

formula:

Arbitrary

Deflection

Factor

To

measure the

the

TIME/DIV
horizontal
Do

not

readjust the VAR

@

the

horizontal

the

arbitrary

time

switch

deflection

conversion

reference

(seconds)

Horizontal

deflection

(divisions)

deflection

horizontal

conversion

factor

duration

to

a setting that provides

to

make an accurate measurement.

of

TIME/DIV

X

X

an

unknown

control.

factor

using the

TIME/DIV

switch

setting

factor

using this

TIME/DIV

switch

setting

signal, set

sufficient

Measure the

466/464 DM44 Operators

or

Time

Duration

EXAMPLE: The reference signal

455 hertz (time duration: 2.19

TIME/DIV
control
divisions. Substituting these values in the
conversion factor formula:

duration

adjusted

Horizontal

Conversion

Factor

Then

with a TIME/DIV

of

horizontal

= conversion X

factor

switch setting

to

provide a

8 X 0.2 ms

an

unknown

2.19 ms

signal

of

.2 ms, and

horizontal

switch

that

TIME/DIV

switch

setting

frequency

milliseconds)

the

deflection

setting

of

completes

X

VAR

1.37

50 µs,

horizontal
deflection

(divisions)

measured is

with

TIME/DIV

of

eight

horizontal

the

time

one

cycle

in

45

a

seven

horizontal

time

duration

Time

Duration = 1.37 X 50 µs X 7 = 480 µs

This answer can be converted to
the reciprocal
Determining

divisions, can be determined

formula:

frequency

of

the time

Frequency). ·

duration

(see applications on

by

using the

by taking

PHASE DIFFERENCE

MEASUREMENTS

Use

either

the CHOP

SOURCE switch

precede the comparison signal in time. Use coaxial cables

or

probes

to

pushbutton

of
take this into
and CH 2 VOL

VAR

that

have equal

the

input

connectors.

If the signals are

to invert the Channel 2

opposite

controls

polarity due to 180° phase difference; if so,

account

TS/DIV

so the displays are equal in amplitude.

or

ALT

mode. Set the A TRIGGER

to

CH

1.

The reference signal should

time

delay

to

connect the signals

of

opposite

in the final calculation). Set the CH 1

switches and

polarity, set the INVERT

display

(signals may be

the

CH 1 and CH 2

CHANNELl

(REFERENCE)

r

100

..

I

7

....

··I\···

)/

V1

v

..

.......

V'"

,

/

v

-

--0-~

I

HORIZONTAL 1

DIFFERENCE-~

90

/'i

~

~

1.

Fig.

represents 45°
45° /division). The sweep rate can be stated in terms
degrees

as

of

45° /division.

CHANNEL 2

(LAGGING)

.

. .

··V

~

K

"\

r\

8 DIVISIONS

(360)

23.

the cycle (360°

...

..

'I\.

,@

\

\.

N

'!\

~

iN

'\

I

i'\.

'\

I

0

Phase difference.

: "

I

·!--··

.....

"'-.......

.

. .

/

..

..

I

v

. . .

...;-

..

..

.

...

ii

J

MEASURE

v/

TIME FROM

v

8 divisions =

ATOB

. .

..

1737·20

I

I

I

I

of

I

Set the

waveform. Position the

TIME/DIV
eight

46

TIME/DIV

control

divisions (see Fig. 23). Each

for

1 reference signal cycle in exactly

switch

display

for

about

and turn the A VAR

division

a one-cycle

of

the graticule

466/464 DM44 Operators

Measure the horizontal difference between

ding

points on the waveforms and
measured (in divisions) by 45°
obtain the

amount

of

phase difference.

multiply

/division

correspon-

the distance

(sweep rate) to

@

I

l

J

l

EXAMPLE:

a sweep rate

Using the formula:

Substituting

Phase Difference

of

Phase

Difference

The

horizontal

45°

/division

horizontal

difference

divisions

the given values:

= 0.6 X 45° = 27°.

difference

as

shown

X sweep

is 0.6

division

in Fig.

23.

(degrees/div)

with

I

CHANNELl

100

(REFERENCE)

I

90

,..._,_

-

'

----©)

0

I

....

0

..

I

I

J

I I

I

· · · ·

CHANNEL

2 · · · ·

I

I

I

®-

...

J

.

...

.

...

~

-

-

....

MEASURE

TIME

FROM

ATOB

l

l

l

J

l

HIGH

RESOLUTION PHASE

DIFFERENCE MEASUREMENTS

Make more accurate phase measurements

the

creasing
TIME/DIV

sweep

EXAMPLE: If the sweep rate were increased

with

the magnifier, the magnified sweep rate

-;-

10 = 4.5°

used in Fig. 23

@

sweep rate

control)

magnification

/division.

but

by

using

may also

Fig.

with

(without

the

24

the X10

changing

X10

MAG

be

used (see Fig. 24).

shows the same signals

MAG

switch

by

in-

the A VAR

mode. Delayed

10

times

would

be 45°

as

set

to

X10.

466/464 DM44 Operators

----

Fig.

With a horizontal difference
difference is:

Phase

Difference

Substituting the given values:

Phase Difference

HORIZONTAL

DIFFERENCE

24.

High-resolution phase difference.

horizontal
difference
(divisions)

= 6 X 4.5° = 27°.

----

of

6 divisions, the phase

magnified

X sweep rate

(degrees/div)

1737-21

47

MEASUREMENTS

Be sure the VAR
detent. Set the B
rising
toB

portion

DLY'D.

100

of

the

i

I

0

I

I

0

I

0-

L

PULSE JITTER

TIME/DIV

TIME/DIV

pulse. Set

JITTER

l

i

@

switch

switch

the

MEASURE

TIME

TO B

A

·,

!'--

. I

--i

to

HOR IZ DISPLAY switch

FROM

,~

©

I

_,

I

I

I

I

I

I

I

I

I

I

,,

I

!---

is in the calibrated

intensify the full

r-

1737•23

Pulse

jitter

is

shown
pulse and includes
Sweep (see Fig. 25).
TIME/DIV

switch

the

setting

by

inherent

Multiple

to

obtain

DELAYED OR MIXED

SWEEP

The

delayed sweep features

provide

the

(B sweep) is
magnification

amount

DELAY-TIME
presented at the sweep rate selected

switch. The

DELAY
the
TIME
delayed display, use
operation.

Magnified Sweep Starts After Delay

VERT

I

about

higher

X1 O MAG

of

time selected

position

delayed

POSITION

1.

Connect

MODE

2.

Set the VOL

four

divisions

switch.

POSITION

following

portion

switch

MAGNIFICATION

apparent

not

is the result

of

the signal

magnification

The

sweep

actually

by

the A TIME/DIV

control

method

the B Trigger

to

be

positioned

control.

the

to

to

display

TS/DIV

in

amplitude.

If

there

Triggered

either

switch

horizontal

jitter

the distance by

pulse

of

the

475 can be used

than is

rate

of

the

increased;

of

delaying

before

by

uses

the

SOURCE

is

too

B Sweep

input

the

channel

to

produce a display

movement

of

jitter

delayed sweep

the

the

switch

the

the B

STARTS AFTER

switch

with

much

connector.

of

the

Delayed

the

time.

provided

apparent

B sweep an

and
display
TIME/DIV

to

allow

the

DELAY-

jitter

in

mode

Set

used.

the

B

to

by

the

is

the

of

the

I
I

I

E

I
I
I

48

Fig. 25. Pulse jitter.

466/464 DM44 Operators

@

I

J

J

J

l

3.

Set

the A TIME/DIV

displays

Trigger

Instrument

TION

DELAY-TIME
to

intensifies
intensified

magnify

26).

the

4.

Set

the

SOURCE switch

equipped

switch

5.

Position the start

be magnified.

6.

Set the B

the
zone remains

7.

Set the

the

switch

complete waveform.

HORIZ

is

POSITION

portion

DISPLAY switch

with

not

set

TIME/DIV

full

portion

HORIZ

of

to
DM44. Verify that the FUNC-

to

TIME

of

the intensified zone with the

control

switch to a setting which

to

be magnified. The start

as

positioned

DISPLAY switch to B DLY'D

A sweep

to

a sweep rate which

to A INT

STARTS AFTER DELAY.

or

1/TIME.

to the part

above (see Fig. 26).

that

is intensified (see Fig.

and the B

of

the display

of

the

to

INTENSIFIED

TO

101~-+1--+---+--+--+--+._+..-J

I

~

....

(Al A INTENSIFIED

1~

••.

90

BE

MA,9NIFIED

DISPLAY

ZONE

'

·\

'

.....

-+~

l

J

J

l

8.

Time

measurements can
in the conventional manner. The sweep rate is determined
by

the

setting

9.

The
calculated
the B TIME/DIV

@

of

the B

TIME/DIV

apparent sweep magnification can be

by

dividing

the A

switch setting.

be

made from the display

switch.

TIME/DIV

switch setting by

46~/464

DM44 Operators

1~

0

..

I

(Bl B

Fig.

7

,/

""'

DELAYED

DISPLAY

26.

Delayed sweep

v

1738-31

magnification.

49

EXAMPLE:

with

an A

TIME/DIV

Substituting

The

apparent

The

apparent

TIME/DIV

switch

setting

Apparent

Magnification

(Delayed - B

Sweep)

the

given values:

Apparent

Magnification

magnification

switch

of

_ A

magnification

setting

1

µs

is:

TIME/DIV
TIME/DIV

1 x 10-

1 x 10-6

is 100 times.

of

.1

setting
setting

4

Triggered Delayed Sweep Magnification

The

delayed sweep

ed

may

produce
magnification
triggered
delayed

under

display

1.

Set

"Magnified

mode

up

the

magnification

too

much

ranges.

provides a
is

Operating

triggered

display

Sweep Starts

method

jitter

at high apparent

the

B Sweep

more

stable

display

at

the

same

point

as given in steps 1

After

Delay."

of a display

ms and a B

just

describ-

in

since the

each time.

through

a

6

2.

Set

the B Trigger

position

on
obtained,

that
If

controls

VOL

HORIZ
of
display.

are
previously

as

the A

Trigger

3.

Adjust

the

B LEVEL

the

trace is stable.

see step 4.)

4.

Inability

the

the

condition

TS/DIV

5.

When

DISPLAY

the

B LEVEL

6.

Measurements are made and

calculated

to

signal does

cannot

or

by

increasing

setting),

the

correct

switch

control

as

given.

intensify

not

in the

SOURCE

SOURCE

control

(If

an

meet

be remedied

trigger

portion

to B DLY'D.

may be necessary

STARTS

intensified

the

desired

the

triggering

the

display

B Sweep

so

is intensified, set

switch

switch.

the

with

Slight

magnification

AFTER DELAY

to

the

intensified

zone

cannot

portion

the B Triggering

amplitude

externally.

indicates

requirements.

readjustment

for

a stable

same

I

zone

be

I
I

(lower

the

factors

mode

I

I

50

466/464 DM44 Operators

@

I

l]

J.

J

l

l
l

J

BASIC 466/464 DELAYED OR MIXED SWEEP TIME MEASUREMENTS

The

delayed

TIME

DIFFERENCE BETWEEN

REPETITIVE PULSES (BASIC 466/464)

Obtain

a Delayed Sweep Display. For
measurement,
sweep

speed

With

the

DELAY

zone

to

the

Set

DELAY

portion)

Note

the
second

pulses

correct
tal

DELAY

formula:

TIME

the

DELAY

pulse

are

pulse).

POSITION

TIME

Determine

set

the B TIME/DIV

that

gives

the

HORIZ
TIME

the

first

HORIZ

to

some vertical reference line (see Fig.

setting

TIME

displayed,

DISPLAY

POSITION

pulse

DISPLAY

POSITION

of

the

DELAY

POSITION

to

the same vertical reference line (if several

Do

not

change

and FINE

POSITION

the

time

sweep

switch

usable

(see Fig. 27 A).

return

(visable)

switch

dial

switch

dial

to

move

TIME

dial

to A INTEN

the

controls.

dial.

difference

to

to B DL

POSITION

clockwise

settings

Note

modes

the

intensified

set

to

move

Y'D.

the

pulse

of

the

using

can be used

most

accurate

to

the

fastest
zones.

A INTEN, use

the

intensified

Adjust

the

(or

rising

278).

dial.

Turn

to

move

the

to locate

the

setting

the

the

horizon-

of

the

following

to

make more accurate time measurements.

Time Difference =

second

dial

[

setting

EXAMPLE: Assume the
second dial setting is
to

0.2

µs

(see Fig. 27).

Using the formula:

Time Difference

second

[

Substituting the given values:

Time Difference

The

time

dial_

setting

difference

first

l

dial

setting

8.81

with

X A

first

dial

the A TIME/DIV

=

first

dial

X (A

setting

= (8.81 - 1.31) X 0.2 µs.

is

]

1.5

microseconds.

delay

TIME/DIV

setting

setting

delay

TIME/DIV

setting)

time

is

1.31

time

and

switch

the

set

l

@

466/464

DM44

Operators

51

DELAY-TIME

POSITION

1:31

DIAL:

DELAY-TIME

POSITION

8:81

DIAL:

TIME

DURATION MEASUREMENTS

(BASIC 466/464)

I

Fig.

(A) A

100

DISPLAY

I

90

I

?

VERTICAL

(REFERENCE

I I

@oR®

'

LINE

I

l

I

I

I

I

MEASURE TIME FROM A TO B

(B)

B

DL

Y'D

DISPLAY

27.

Time difference between repetitive pulses.

Obtain a Delayed Sweep Display. Set the A
switch

TIME/DIV

accurate measurement, set the B

to

display a single event. Be sure the VAR

control

is in the calibrated detent. For the most

TIME/DIV

TIME/DIV

switch

I

to the

fastest sweep speed that gives a usable (visible) inten-

sified zone. Vertically position the
measurement points to the

center

display

to

horizontal

place the time

graticule

line

(see Fig. 28).

Use the DELAY
(left-hand edge)
intersection
graticule

of

line (see Fig.

POSITION dial

of

the intensified zone to just

the signal and the center horizontal

28,

Point A).

Note

to

move the start

touch

the DELAY

the

TIME

TIME

POSITION dial setting.

Use the DELAY TIME POSITION dial
of the intensified zone to the second
point

I

j

··-

~

(see Fig. 28, Point B). Note the DELAY

POSITION dial setting.

Substitute
into the time difference

the DELAY

TIME

POSITION dial settings

formula

to

move the start

time

measurement

TIME

to obtain the time

I

duration.

1737·10

EXAMPLE: The A
the B

TIME/DIV

TIME/DIV

switch

is

set to

switch is set

.1

ms.

to

2 ms and

I

52

466/464 DM44 Operators

@

I

]

J
J

]

l

l

l

l

I

. . . .

100.

I

90

I

I

@"

(Fig. 28) is 1.20.
B (Fig. 28) is 9.53.

formula:

/,

'~

I

INTENSIFIED

lv

I

O·

I

I

I .

The

DELAY

Time

Difference

[second

setting

ir·

dial

. .

I\.

"

I I

TIME
The

. .,.,

---·

Fig.

. . . .

,

...

~

'

\

\

~'\

i.-

'

\

ZONE

HORIZONTAL

DISTANCE

28.

POSITION

DELAY

To

~

I I

Time duration.

TIME

find

Time

Duration

l

first

dial

setting

....

L,.....-

_L,.....-

+---

'

dial
POSITION

the

time

x

. .

@~

~

I

V.

setting

duration

delay

(A

TIME/DIV

setting)

....

1

~

J :

I
I

I

..

.1.

I

I

I

I
I

dial

time

I

MEASURE

TIME FROM

ATO

1737·11

at

Point
at

use

B

A

Point

the

Substituting the given values:

Time

Duration=

(9.53 - 1.20) X 2

FREQUENCY MEASUREMENTS

(BASIC 466/464)

The

frequency

by

taking the reciprocal

EXAMPLE: The

Point

B,

Fig. 28)

Using the formula:

Substituting

of a recurrent

time

is

16.66

Frequency

the given values:

Frequency

signal can be

of

the

time

duration

duration

milliseconds.

= . .

=

time

16.66

of

one

1

duration

ms

ms

of

event

60 hertz

=16.66

one

(Point A to

ms

calculated

event.

l

@

466/464 DM44 Operators

53

TIME DIFFERENCE BETWEEN TWO

PULSES FROM DIFFERENT SOURCES

(BASIC 466/464)

Make sure

calibrated detent. Set the A

1.

Connect
parison signal
connectors

CHANNEL 1 (REFERENCE)

I

....

100

I

90

I

50%

A MPLITUDE

LEVEL

0

I

0

....

I

(A)

the

VAR

the reference signal

to

CH

2.

Connect

using probes

or

INTENSIFIED

\

....

\

. . . .

....

~\

/ -

/

v

,

~

F:::::

-0

I

. . . . . . . .

. . . .

HORIZONTAL

~

- DIFFERENCE -

TIME/DIV

Trigger

cables

I I I

ZONE

control

SOURCE

to

CH

1 and the

the signals

with

equal time delay.

/~i...

:@

I

. . . .

'

--i

')

. .

-I

I

-

-

-

-

'

is in the

switch to CH

to

the

CHANNEL2

v

I

/_

.

...

MEASURE

TIME FROM

.

...

com­input

. . . .

ATO

Set the VERT
general,
and
signals.

29A).

Trigger
TIME/DIV
switch

CHOP

the

ALT

Center

Set the

SOURCE

(when possible).

VERTICAL

r

.

...

100

9

~

MODE

is

more

position

HORIZ

switch

is

each

DISPLAY

to

STARTS AFTER DELAY. Set the B

20

times faster than the A

REFERENCE

-

"""

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

switch

suitable

more

suitable

of

the displays

switch

LINE

~

-

.

...

. .. .

to

either

CHOP

for

low-frequency

for
vertically

to A INT

CH

2

Sl~~AL

CH 1 SIGNAL

or

ALT. In

signals

high-frequency

(see Fig.

and the B

TIME/DIV

I

I

I

E

E

B

CH 1 SIGNAL

10

I

~

)

(B

.....

.....

-

-

--

-

-

~It.

....,i'....:A

FOR

B

FOR

. . . . . . . .

CH
CH

.....

1

2

. . . .

1737·12

I

I

54

Fig.

29.

Time difference between two pulses

466/464 DM44

from

Operators

different

sources.

@

I

J

Use

the

DELAY
intensified
DISPLAY

POSITION
some

DELAY

zone

switch

dial

vertical reference line (see Fig. 298).

TIME

TIME

POSITION dial

to

the CH 1 pulse. Set the

to B DL

to

move the CH 1 pulse

POSITION

Y'D. Readjust the DELAY

dial setting.

or

to

rising

move the

HORIZ

TIME

portion

Note

to

the

To

find the time difference use

T tsecond

ime = dial

difference tt·

Substituting the given values:

se

mg

the

first

dial

setting

formula:

J

X (A

delay time

TIME/DIV

setting)

J

]

l
l

l
l

l

Use

the

DELAY

pulse

or

rising

note

the

DELAY

Substitute

the

time

difference

EXAMPLE: The A

the B TIME/DIV

POSITION
line.

Use
pulse
dial

setting

@

The

the

to

dial

DELAY

DELAY

the

reference line.

is 7.10.

TIME

POSITION dial

portion

the DELAY

switch
to

to the same reference line. Again

TIME

POSITION dial setting.

TIME

formula

move the CH 1 pulse

TIME

TIME

to

TIME/DIV

is set

POSITION dial setting is 2.60.

POSITION dial

The

POSITION

find the

switch

to

2 µs. Use

DELAY

to

move

dial settings in

time

difference.

is set

to

50

the

DELAY

to

the

reference

to

move

TIME

POSITION

466/464 DM44 Operators

the

µsand

the

CH 2

TIME

CH 2

Time

Difference=

(7.10 - 2.60) X 50

RISETIME (BASIC 466/464)

R isetime measurements use the same
d u ration measurements,
made between the
Falltime
the

or
control
switch

is

measured between the 90% and 10%

trailing edge

Use a sweep speed setting

events (if possible) and be sure the VAR

is

and the VAR

of

in the calibrated detent. Set the VOL

except

10%

and 90%

the waveform.

control

the

points

that

displays several

(or

signal

µs

= 225

µs

methods

measurements are

of

as

the

waveform.

points

cycles

TIME/DIV

TS/DIV

amplitude)

time-

on

for

55

I

I

INTENSIFIED

..

.

I

r=

w

....10

<{

::>

z

t:

(!)...I

-

4.

I/):!:

<{

~@"

0

L

f-J

exactly a five-division display. Set vertical positioning so
the display bottom touches the
display

ZONE

~

top

touches the 100% graticule line (see Fig. 30).

_C

.........,;,.;.

~""

J,

~,

~'

,.

....

HORIZONTAL

DISTANCE

Fig. 30. Risetime.

I

~®~'\.

~-

~"

/

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

i...,..o""

...

. '

---

0% graticule line and the

MEASURE

TIME FROM

ATO

B

1737·13

Use the DELAY

of

the intensified zone (left-hand edge)
intersection
Fig.

30,

Point

setting.

Use the DELAY

of

the intensified zone
signal and the

Note the DELAY

Substitute the DELAY

the time difference

EXAMPLE: The A

DELAY

2.50 The DELAY

(Fig.

30)

TIME

is

7.50.

TIME

POSITION dial

of

the signal and the 10%

A).

Note

the DELAY

TIME

POSITION dial

to

just

touch

190%

graticule

TIME

formula

TIME/DIV

POSITION dial setting at

TIME

POSITION dial setting at

To

find the risetime use the formula:

line (see Fig. 30,

POSITION dial setting.

TIME

POSITION dial settings in

to

find the risetime.

switch is set

to

move

the

to

just

touch

graticule

TIME

to

the intersection

point

line (see

POSITION

move

the

Point

to

1 µs. The

A (Fig. 30) is

start

dial

start

of

point

the

the

B).

B

I
I

E

E

Set the A

with

the risetime spread
Horizontally
waveform intersects the second vertical graticule line (see
Fig.

30). Set the B

speed that provides a usable (visible) intensified zone.

56

TIME/DIV

position the

TIME/DIV

switch
horizontally

for

display

switch

so the 10%

a single-event display

as

much

as

possible.

point

of

the

to

the fastest sweep

466/464 DM44 Operators

Time

.ff =

1 erence

D

second first ]

dial dial X

[

setting setting

. .

R1set1me

=

delay time

(A

TIME/DIV

setting)

@

I
I
I

]

Substituting

Risetime

= (7.50 - 2.50) X 1

the given values:

µs

= 5 ms.

switch, it is
ensure location

not

necessary

of

the

correct

to

pulse.

switch

display

modes

to

l

]

]

l
l

]

J

MIX {BASIC 466/464)

For

the

MIX
procedures
a sweep rate set
part

of

can be used. With

the

display

mode

of

operation,

the

by

the A TIME/DIV

at a sweep rate set

first

switch

the

same general

part

of

the

and

by

the B Tl

display

the

second

ME/DIV

However, inaccuracies are
measurement
DL

at

Y'D
recommended mode
measurements.

mode

by

the transition from A

is the

most

of

making

introduced

to

accurate

into

B sweeps. The B

and therefore

differential

time

the

J

@

466/464 DM44 Operators

.£

..

.. : a

LU,

57

.t

JU

DM44 DELAYED OR MIXED SWEEP TIME MEASUREMENTS

Most measurements

TIME

the
operating modes and the

function

of

the DM44 and the delayed-sweep mode of the oscilloscope. Table 5 lists the DM44 and

of

time, time-duration, frequency, time difference and risetime are

crt

display

obtained in these modes.

TABLE 5

DM44 Delayed Sweep Displays

more

easily performed using

oscilloscope

I

I

DM44

FUNCTION

VOLTS
OHMS,

OR

TEMP

1

1n

the B DLY'D mode, the

58

HORIZ

DISPLAY

1

A

INT

MIX

intensified

CH

OR

CH

OR

ALT

VERT

MODE

1,

CH

ADD

ALT

or

CHOP

1,

CH

ADD

OR

CHOP

zones

DISPLAY

2,

One intensified zone, DELAY

Two

intensified zones, one on each channel display. Intensified zones
are coincident in time. DELAY
zones.

2,

One mixed display. Position
TIME POSITION.

Two mixed displays, one on each channel display. Transition points are
coincident

TIME POSITION.

(that

are displayed in the A

466/464 DM44 Operators

in

time. Position

INTEN

of

mode)

OBTAINED

TIME

POSITION moves intensified zone.

TIME

POSITION moves both intensified

of

transition

transition points determined by DELAY

will

point

determined by DELAY

be displayed at the B sweep rate.

@

E

E

I

I
I

I

]

]

DM44

FUNCTION

HORIZ

DISPLAY

TABLE 5

DM44 Delayed Sweep Displays

VERT

MODE DISPLAY OBTAINED

Two

CH

OR

1,

ADD

CH 2

intensified zones. DELAY TIME POSITION moves both intensified

zones. A TIME moves

(cont)

only

one intensified zone.

]

]

J
J

l

J

J

2

INT

A

TIME

OR

1/TIME

MIX

2

Your

instrument

instructions

@ 466/464 DM44 Operators 59

.!

for

may

making

l .! LJU

be

CH

OR

modified

this

modification

@ts!,.,

ALT

CHOP

1,

CH

ADD

ALT

CHOP

to

j .. ,

..

Two

intensified zones. Reference
Measurement
moves both intensified zones. A TIME moves
(on the CH 2 display).

Two

pairs

are

coincident

four

intensified zones.

Two

2,

make

,~

.... au

are

mixed displays on the same trace.
displays overlap.

Two

mixed displays, one on each channel display. DELAY TIME POSITION
moves transition
CH 2 display only.

Four mixed displays,
since mixed displays overlap.

the

DELAY

located

..

,

jJ)LL

point

appears on CH 2 display. DELAY

of

intensified zones, one pair on each channel display. The pairs

in time with each other. DELAY

!::i.

TIME moves two intensified zones.

point

of

both displays. A

two

on each channel display.

TIME

in

POSITION

the Maintenance section

and ll.

point

appears on CH 1 display.

only

the measurement

TIME

Not

generally used since mixed

TIME

moves transition

Not

TIME

controls

of

the DM44 Service manual.

operate

a

..

TIME

POSITION

point

POSITION moves all

point

of

generally used

independently. The

j

,.

it"

TIME

DIFFERENCE BETWEEN

REPETITIVE PULSES (DM44)

Set the

31A. Use the DELAY

adjusted. Use the

control

controls

FUNCTION
HORIZ
B SOURCE

TIME/DIV

A
B

TIME/DIV

fl

TIME

as

follows:

DISPLAY

TIME
AINTEN
ST ARTS AFTER DELAY
To

display

3

or

cw

To

move the time­measurement
the

2 pulses

4 positions more

than A TIME/DIV

point

right

of

the ref-

to

erence point

VAR

TIME/DIV

Position the display

approximately

TIME

point

to

reference

the first pulse.

will move when the DELAY

fl

TIME

measurement

Set the
readjust the
waveforms (see Fig.

point

HORIZ

fl

to the second pulse.

DISPLAY switch to B DLY'D. Slightly

TIME

31

B). The DELAY TIME POSITION

may need to be

Detent position

POSITION

TIME
control

control

slightly

readjusted to keep the

as

shown in Fig.

control

Both

POSITION

to move the

intensified zones

control

to move the time-

to

superimpose the

display on screen. The Readout and Scale Factor Lamps
now

indicate

the time

difference

between the pulses.

I

100

I

-~----+-----+---+--+----+-~~

(A) A

DISPLAY

I i

100

90

is

(8) B

Fig.

31.

!

I

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i

i

I

i I

I

!

I

I

I

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0
0

:

i

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DL

Y'D

DISPLAY

Time difference between repetitive pulses.

I I

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'-0

AND©~

SUPERIMPOSED

i

I

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1

I

i

I

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i I

(1737-10)2037-31

I

I

I

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I

60 466/464 DM44 Operators

@

]

To

find

waveforms

1/TIME.

indicate

The Readout and Scale Factor Lamps

the

the

pulse repetition rate,

as

above and set the

repetition rate.

superimpose

FUNCTION

switch

the

to

now

J

J

]

l

J

l

l

TIME

Set

controls

FUNCTION
HORIZ

SOURCE

B
A

TIME/DIV

B

TIME/DIV

!),.

VAR

Use the DELAY
reference
Point
measurement
line

on

B}.

@

DURATION

DISPLAY

TIME

TIME/DIV

point

A}. Use

the

next

as

follows:

TIME
to a horizontal
the

!),.

point

to

cycle

of

MEASUREMENTS

(DM44)

TIME
AINTEN
STARTS AFTER DELAY
To

display
event.
or 4 positions

3

cw than A

To

move the
measurement
the
erence point.

Detent

POSITION

graticule

TIME

control

near

the

same

the waveform (see Fig. 32A,

a single

TIME/DIV

time-

right

of

the ref-

position

control

horizontal

to

line (see Fig. 32A,

to

move

the

466/464 DM44 Operators

more

point

to

move the

time-

graticule

Point

(A) A SWEEP

(B) B

Fig.

32. Time duration and frequency measurements.

DLY'D

DISPLAY

SUPERIMPOSE

PORTIONS OF

DISPLAY

L

WAVEFORM

2039-31

61

Set the
readjust
waveform
POSITION
keep the
Lamps

the

display

indicate

HORIZ

fl.

TIME

portions

control

on screen.

the

DISPLAY

control

(see Fig.

may need

time

duration.

switch

to

The

to

8 DLY'D.

superimpose

328).

to

be

slightly

Readout and Scale Factor

the displayed

The

DELAY TIME

readjusted

Slightly

to

A Time/Div Set

Multiples of Zones

2

5

To

Decade Spacing Between Intensified

Less

Than

0.25 DIV

0.5 DIV

1.0 DIV

I

I

FREQUENCY MEASUREMENTS (DM44}

To

measure frequency, use the same procedure

Time

Duration
switch
Readout and Scale Factor Lamps

The Scale Factor Lamps
follows:

This

62

to

1/ms Lamp

OFF

ON

OFF ON

A

blinking
occurs

Measurements

1/TIME. With the

1/µs Lamp

display

on measurements as follows:

indicates an over-range condition.

except

display

indicate

indicate

OFF
OFF

set the FUNCTION

superimposed the

the frequency.

the scale

Multiplier

as

factor

Hz

kHz

MHz

466/464 DM44 Operators

for

as

TIME DIFFERENCE BETWEEN

DIFFERENT SOURCES (DM44}

Set

controls

A SOURCE

MODE

VERT
HORIZ

SOURCE

8
8

TIME/DIV

VAR

TIME/DIV

Connect
comparison
to

the

inputs

delays.

TWO PULSES FROM

as

follows:

CH 1
ALT

DISPLAY

the

reference signal

signal

to

with

the CH 2 input.

cables

AINT
STARTS AFTER DELAY
3

or 4 positions

cw than A

Detent

to

or

probes having equal time

position

the CH 1

Connect

more

TIME/DIV

input

and the

the signals

@

I

I

I

I

]

]
]

Adjust

the

DELAY

point

the

to

point

/:::,,.

point

Point

reference
display
the
time-measurement

measurement
(see Fig. 33A,

(see Fig. 33A,

reference

Adjust

TIME

POSITION

the desired

Point
appears
point

appears on

TIME

control

to

the desired

B).

control

spot

on the reference (CH

A). In the

on

the CH 1

ALT

the

to

spot

on the CH 2

display

CH 2 display.

move

to

move the

1)

vertical mode

while the

the

time-

display

Set the
readjust the DELAY
to

superimpose the waveforms (see Fig.
Readout and Scale
difference.

HORIZ

DISPLAY

TIME

POSITION

Factor

switch

Lamps

to

B DLY'D.

and/:::,,.

indicate

TIME

338).

Slightly

controls

The

the

time

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CHANNEL

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TIME

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.........

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Time difference between

..

J,J,,Jl~

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FROM

ATOB

466/464 DM44 Operators

Jfa#~t.~,.,ua

....

two

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CH 1 SIGNAL

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(1737

12)2037-33

63

Set

controls

FUNCTION
HORIZ
B SOURCE

TIME/DIV

B

!:::..

TIME

RISETIME (DM44}

as

follows:

DISPLAY

TIME
AINTEN

ST ARTS AFTER DELAY

or

4 positions more

3

cw

than A

To

move the time­measurement
the

erence

right

TIME/DIV

of

the ref-

point

point

to

Set the A
several events. Set the VOL
so

the
Vertically
0%

graticule
line.

Adjust

reference

A).

Adjust

ment

point

The

Readout and Scale

risetime.

TIME/DIV

amplitude

position

line and the

the DELAY

point

to

the!:::..

to

the 90%

of

the

the

TIME

the 10%

TIME

switch

display

display

top

control

graticule

to

a setting that

TS/DIV

POSITION

graticule

and VAR

is

so the

touches

to

move the

line (see Fig. 34,

Factor

displays

VOL

TS/DIV

exactly

bottom

line (see Fig. 34

Lamps

the

100%

control

time

5 divisions.

touches

graticule

to

move the

measure-

Point

indicate

the

Point

B).

the

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Fig. 34. Risetime.

-

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(1737-13)2037-34

For the MIX

MEASURE

TIME

FROM

ATOB

....

466/464 DM44 Operators

procedures
a sweep rate set by
part
switch, it is
ensure location

However, inaccuracies are
measurement by
DL Y'D
recommended
measurements.

of

mode

can be used. With

the

display

not

necessary

of

the

mode

is the

mode

MIX (DM44)

of

operation,

the

first part
the A TIME/DIV
at a sweep rate set

the

correct

transition

most

accurate and

of

switch, and

to

switch

pulse.

introduced

from A

making differential

the

same general

of

the

by

the B

display

to

B sweeps.

therefore

display

the

second

TIME/DIV

modes

into

the

The

the

time

at

to

B

@

I

I

I

I

]

]

+40°C

Refer

unless

to

the

otherwise

service

OPERATOR'S SPECIFICATIONS

manual

stated.

for

complete

specifications.

Specifications

given are

for

an

operating

range

of

0° C

to

]
]

J

l
l

J

J

STORAGE

Stored Writing Speed

VAR PERS Full Scan Speed: 0.5

X 8

divisions.
control
time.

466 and 464.

FAST

divisions

FAST Full Scan Speed: 150

divisions

FAST Reduced Scan Speed: 3,000

center

VAR PERS Reduced Scan Speed: 3

center

@

It

is necessary

to

compromise

Full Scan Speed:

(0.9

cm/div).

(0.9

cm/div).

8 X 10

divisions

8 X 10

divisions.

to

use

between

11 O div/µs

464

only.

div/µs

466

only.

(0.45

cm/div).

It is necessary

writing

466/464 OSCILLOSCOPE

STORAGE
speed and view time. 466

div/µs

over

the

the

STORAGE

speed and view

over

the

over

the

div/µs

466

only.

div/µs

center6

LEVEL

center

center

over

over the

to

use the

466/464

6 X 8

6 X 8

the

Storage View Time

FAST and VAR PERS View Times:

These times are at full stored
extended at least
the

SAVE Display mode.

Deflection Factor Accuracy:

position.

Frequency Response: De

and

CH

or

less. Use

1 Hz.

DM44

Operators

LEVEL

2.

Ac-coupled,

of

a 10X

control

25

to

times

compromise

only.

by

VERTICAL

to

low-frequency

probe

extends

between

At

least 15 seconds.

display

using

Within

at least 100 MHz

intensity.

reduced

3% in

the

response is 10 Hz

frequency

response

writing

They

intensity

calibrated

for

CH 1

are

in

to

65

..

J

,£

Risetime: 3.5 nanoseconds

-:-

bandwidth in MHz).

0.35

Maximum Input Voltage:

or

500 V p-p ac at 1 kHz

ac)
+ peak ac)

or

500 V

p-p

or

less (calculated from

De-coupled

or

less; ac-coupled, 500 V (de

ac 1 kHz

or

250 V

less.

(de+

peak

TRIGGERING

Sensitivity

Ac Coupled Signal: 0.3 div internal

to

25

from 30 Hz

150 mV external at 100 MHz.

MHz; increasing

or

50 mV external,

to

1.5 div, internal

I

or

I

Positive-Going Step Aberrations: Less than +3%,

not

to

exceed

Common-Mode Rejection Ratio

Inverted): At least

signals
CMRR at

Input Gate Current: 0.5

5 mV/DIV), from

Channel Isolation: At least 100:1 at

CHOP

Cascaded Operation

Approximately
50

MHz,
coupled, using a 50
50

n at CH 2 Input.

66

3%

peak-to-peak,

10:1

of

6 divisions

50

kHz.

Mode Repetition Rate: Approximately 250 kHz.

with

CH 2

or

-15°C

1 mV/DIV.

OUT

0,

42-inch

excluding

at 20 MHz

less

with

nA

to

+30°C.

(CH 1 OUT

Bandwidth

connected

BNC

the ADD mode.

(ADD

Mode with CH 2

for

common mode

GAIN adjusted

or

less

25

MHz.

int.o

CH

is de to at least

to

CH 1 input. AC-

cable, terminated in

-3%,

for

best

(0.1

div at

2)

sensitivity:

466/464 DM44 Operators

LF

external, from

internal

signals below about 50 kHz.

HF

external, from 30 Hz to 50 kHz. Attenuates signals below
about

DC Coupled Signal: 0.3 div internal
from de to
external at 100 MHz.

EXT

tiplied

External Trigger Input

Maximum Input Voltage: 250 V

p-p ac

REJ

Coupled Signal: 0.5 div internal

50

kHz to

or

300 mV external at 100 MHz. Attenuates

REJ

Coupled Signal: 0.5 div internal

50 Hz and above

25

MHz; increasing

-:-

10 Signal:

by

10.

(1

kHz

or

less).

25

MHz; increasing to 1.5 div

about

50

to

Amplitude

kHz.

or

50 mV external,

1.5 div internal

requirements are

(de+

peak ac)

or

or

or

or

100 mV

50 mV

150 mV

mul-

250 V

@

I

I

I
I

I

I

I

J

]

]

J

l
l

J

J

Level

Control

At

least+

-20

V,

40

Trigger

Deflection Factor:

500 mV/div in EXT-:-

Risetime: 5 ns
Trigger

center.

Range in Ext

and

-2

V p-p.

View

or

Centering Point: Within 1.0 division of screen

DIFFERENTIAL

MEASUREMENT

Accuracy
Dial Division: Within
±2.5% from

Accuracy

Division: Within ±0.01

+35°

C.

+55°C.

for

Measurements Greater than One

-15°C
for

Measurements Less than One Major Dial

Within ±0.03

to

DIFFERENTIAL TIME

MEASUREMENT (DM44)

Refer to TIME

MULTIMETER.

AND

V,

4 V p-p; EXT-:- 10

About

50 mV/div in EXT and about

10.

less.

(BASIC

±1%

from

+15°C

+55°C.

major

dial divisions from

major

dial divisions from

1/TIME

is

at

TIME

466/464)

to

+35°C.

under DM44

least+

Major

Within

+15°

-15°

DIGITAL

and

C to
C to

HORIZONTAL

Sweep Rate Accuracy:

magnified, from

Mixed Sweep Accuracy: With in
Sweep inaccuracy, when viewing the A
Sweep portion remains the same

Trigger
time

by at least a factor

Delay Time Jitter: 1 part,

10 times the A TIME/DIV switch setting.

Calibrated Delay
Continuous
of

A (delaying) sweep.

X-Axis Sensitivity (X10

vertical system.

X-Axis Bandwidth:

10 division reference signal.

Phase Difference Between X-

Within 3° from de to 50 kHz.

Deflection Accuracy: Within

+20°

Holdoff

from

0.2

Within

2%,

unmagnified, and

C to

+30° C for

Variable: Increases A Sweep

of

10.

or

Time

µstoat

(VAR

least 5 seconds after the start

A and B Sweeps.

2%

plus the measured A

as

above.

less, in 50,000 (0.002%)

control

X-V

MAG

turned

De

to at least 4 MHz,

and

4%.

3%

portion

off):

Y-Axis Amplifiers:

only. B

to

Same

holdoff

of

CAL):

as

the

with

a

l

@

466/464 DM44 Operators

67

CALIBRATOR

Output Voltage: 0.3 V

+20° C to

Output Current: 30

+30°C.

Repetition Rate:

+30°

C.

mA

About

within

1 kHz.

Z AXIS

Sensitivity:

intensity
signal decreases intensity.

Frequency Range (Usable): De

Noticeable

settings,

by

intensity

a 5 V

1%

and

within

0.3% from

within

2%

from

+20°C

INPUT

modulation,

p-p

signal. A positive-going

to

50 MHz.

to

at normal

AC POWER SOURCE

Regulating Ranges:

115

v 230 v

Low
Medium
High

Line Frequency: From 48 Hz

Maximum Power Consumption: 100 watts at 115

60 Hz, medium range.

99 V
104 V
108 V

to

121

V

to

126 V 207 V

to

132 V 216 V

to

440 Hz.

198 V

to
to
to

242 V
253 V
264 V

V,

I

I

I

E

Maximum Input Voltage: 100 V (de plus peak ac)

100 V p-p ac at 1 kHz

or

less.

OUTPUTS

CH

1 Out

Output Voltage:

25

mV/div

Bandwidth: De
DC

A+

Output Voltage:

Output Resistance:

68

Level:

and

into

B+

50

About

Gates

At

least 50

ohms.

to

at least

0 volts.

About

5.5 V

About

mV/div

50

500 ohms.

into

1 MO;

MHz

into

50

of

positive-going pulse.

ohms.

466/464 DM44 Operators

to

at least

or

ENVIRONMENTAL

Operating Temperature:

Operating Altitude:

temperature decreases 1° C/1,000 feet, above 5,000 feet.

Humidity (Operating and Storage): 5 cycles (120 hours)

to

referenced

MIL-E-16400F.

-15°C

To

15,000 feet.

to

+55°C.

Maximum

operating

@

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DM44

DIGITAL

MULTIMETER

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RESISTANCE

Maximum Safe Input Voltage: 120 V rms

COM inputs.

Resistance Accuracy: 200 0

count, plus probe resistance; 2 kO,
MO

ranges-within

0.3%

±1 count.

Temperature Dependence:

ranges-250
350

ppm/°C.

Resolution:
Recycle Time: At least 3 measurements/second.
Response Time: All ranges within 1 second except 2

MO and

20

MO

0.25%

ppm/°C;

0.1

200

0.

(within 5 seconds).

range-within

±1count;20

20

kO,

0,

2

kO

20

and

kO,

MO

200

between+

0.25% ±1

200

kO,

range-within

kO

and 2

20

MO

ranges-

TIME

Accuracy:

count.

-15°C

+15°C

to

+35°C;

to 55°C; within

within

2.5%

1%

of

reading ±1

of

reading ±1 count.

1/TIME

Accuracy:

count.-15°C

+15°C

to

+55°C;

to

+35°C;

within

within

3.5%

2%

of

reading ±1

of

reading ±1 count.

and

and 2

MO

TEMPERATURE

Range:

Accuracy: Original

+125°C.

Replacement Probe: Accuracy will equal original probe

accuracy after DM44 is compensated.

Maximum Safe Voltage on Measurement Surfaces:

±100

Temperature (Storage and Operating): Probe Body and

Cable,

+150°C.

-55°C

Within 3°C,

V (de + peak ac) above chassis ground.

-55°

to

+150°C

+125°C

C to +105°

in 1 range.

Probe-Within

to

+150°C.

C.

Probe Sensor Tip,

2°

C,

-55°

-55°

DC VOLTAGE

Maximum Safe Input Voltage:

between + and chassis.

Common Floating Voltage:

chassis.

DC Voltage Accuracy: Within 0.1%

count.

±1200 V (de+

±500 V (de+

of

peak ac)

peak ac) to

reading,

C to

C to

±1.

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DEC. 1977

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Temperature Dependence:

Resolution: 100 µV.
Recycle Time: At least 3 measurements/second.
Response Time: Within 0.5 second.
Normal/Common Mode Rejection Ratio:

Normal
Common

50

Hz and 60 Hz.

Input

Mode-At

Mode-At

Impedance: 1 O MO.

44

least 60

least 100

ppm/°

dB

at

dB

C.

50

at de;

Hz and

60

80

ACCESSORIES

Hz.

dB at

Service Manual (466) 070-1753-01

1 Service Manual (464) 070-1653-01

2 Fuses, 1.5 A 3AG fast-blow

0.

75

2 Fuses,

Filter, Blue Plastic (installed)
CRT Filter, Clear Plastic 337-1674-01
Adapter, Ground Wire 134-0016-01
Pair, Test Leads (DM) 003-0120-00
Service Manual (DM44)
P6430 Temperature Probe(DM44)

A 3AG fast-blow 159-0042-00

159-0016-00

337-1674-00

070-2036-00
010-6430-00

OPTIONAL ACCESSORIES

I

I

I

STANDARD ACCESSORIES

INCLUDED

2 P6062B Probe Packages 010-6062-13

Accessory Pouch, Snap (w/o DM) 016-0535-02
Accessory Pouch (DM) 016-0594-00
Accessory Pouch,
Operator's Manual 070-2037-00

70

Zipper

016-0537-00

466/464 DM44 Operators

C-5A Option 2 low cost fixed focus

C-5A Option

Protective

0365-00.

Folding Polarized Viewing

Folding Viewing Hood,

0592-00.

2.
Cover-Waterproof,

Hood-Order

light-shielding-Order

Camera.-Order

blue

vinyl-Order

016-

I

016-0180-00.

016-

REV FEB 1982

tttmrre

T·trnrtrmrtttrtr

twY····r··

r r

·:··

•

[
[

[
[
[
[
[
[

Folding Viewing Hood,

0566-00.

Mesh

Filter-Improves

378-0726-01.

SCOPE-MOBILE

aisle space, has storage area in

Cart-Occupies

light-occluding-Order

contrast and

EMI

less than

base-Order

filter-Order

18

200.

016-

inches

OPTIONS

Your instrument may contain the following options:

OPTION 1

Deletes DM44 temperature probe from the DM44.

.OPTION 4

The instrument
specifications on radiated interference requirements.
There

is

no change

is

modified to meet certain

in

operating instructions.

Test Lead

grounding

Includes retractable hook tip and Cl tester probe cover
May be used with other miniature probe

Order 012-0427-00.

Set-1

clip, 1 red lead with banana

black lead with banana plug and

plug

and probe.

tip

accessories.

OPTION 7

At

the time

do

not have the Option 7 available.

Option 7 permits operation on
performance deterioration.
against damage due to connection
mode

of

with conventional de power (marine and aircraft).

of

this writing, instruments having the DM44

12

Circuitry

operation. The 24-voltexternal

of

is
24

provided

or

24 Vdc with no

to

protect

V when in the 12 V

input

permits use

..

@

466/464 DM44 Operators

71