DATA PRECISION 5740 User Manual

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72-1002

Model

5740

COUNTER

1

INTRODUCTION

1.1

GENERAL

Data

PrecisionModel

5740

Multi-Function

Counter

is

a

medium-frequency,

seven

deci

mal-digit

display

unit,

capable

of

opera

ting

in

any

one

of

four

measurement

modes.

The

Model

5740:

1)

Measures

frequencies

of

repetitive

signals

from

5Hz

to

lOOMHz.

2)

Measures

periods

from

0.5usec

to

0

.

2

sec.

3)

Measures

time

intervals

from

0.01

sec

to

99

,

999.99sec,

and

displays

five

integral

decades

and

two

decimals

of

the

total.

9)

Provides

a

front-panel

trigger

level

control

to

adjust

threshold

of

axis

cross

ings

for

low

duty-cycle,

offset,

and

AM-

modulated

inputs.

10)

Incorporates

a

built-in

hysteresis

so

that

noisy

input

signals

may

be

mea

sured

accurately.

11)

With

BCD

option

installed,

provides

four-line

BCD

(1-2-4-8)

output

data

for

each

of

the

seven

digits,

decimal

point

location,

and

counter

status

signals

for

remote

display,

recording,

or

data

pro

cessing

applications.

Also

includes

re

mote

START-STOP

control

for

Time

measure

ments

.

4)

Totalizes

events

from

one

to

9,999,999

and

displays

seven

full

decades

of

that

total.

5)

Provides

four

selectable

time

in

tervals

from

O.Olsec

to

lOsec

over

which

to

average

the

measured

frequency.

6)

Provides

four

selectable

multiples

from

1

to

1000

of

the

number

of

cycles

over

which

to

average

the

measured

period,

7)

Automatically

positions

the

display

ed

decimal

point

to

obtain

direct

readout

of

kilohertz

(Frequency

measurement),

microseconds

(Period

measurement),

hun-

dredths

of

seconds

(Time

interval

measure

ment),

or

units

(Events

measurement).

8)

Makes

its

measurements

with

signal

inputs

as

low

as

lOmV

RMS

(sine

wave)

or

30mV

peak

(pulse),

with

duty

cycles

as

low

as

10%

of

CW

or

AM

modulated

signals.

12)

Has

optional

provision

for

intro

ducing

high

precision

external

crystal-

controlled

time

base

in

addition

to

the

internal,

aged-crystal

controlled

time

base

circuit.

The

instrument

is

self-contained

in

one

portable

case

only

3-1/2"

high

by

8-1/2"

wide

by

7-1/4"

deep,

with

a

car

rying

handle

that

doubles

as

a

tilt

stand.

A

three-wire

line

power

cord

is

integral

with

the

unit,

and

the

power

line

is

protected

with

a

rear-panel

ac

cessible

line

fuse.

All

operating

con

trols,

indicators,

and

input

connec

tions

are

front-panel

mounted.

Each

instrument

is

designed

for

one

of

the

standard

115

or

230V,

47

to

430

Hz

power

mains,

and

the

particular

source

for

which

the

instrument

is

wired as

it

leaves

the

factory

is

shown

on

the

rear

panel

label.

COPYRIGHT

1976

DATA

PRECISION

CORPORATION.

PRINTED

IN

THE

US.A.

11

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DATA PRECISION 5740 Specifications

General

Brand	DATA PRECISION
Model	5740
Category	Cash Counter
Language	English