Boonton Electronics 71A, 71AR - General Description

Boonton Electronics 71A, 71AR

40 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

SECTION

II

General

Description

2.1

Model

7~

The

Model

71A

provides

instant,

direct-reading,

three-terminal

capacitance

measurements

and

two-terminal

inductance

measure-

ments

at

1 MHz.

The

measuring

capabilities

of

0

to

1000

pF

and

0

to

1000

~

are

each

covered

in

7

ranges

in

a

1-3-10

sequence.

The

internally

supplied

1

MHz

test

signal

is

crystal

controlled.

The

instrument

operates

with

low

test

levels

as

required

for

many

semiconductor

measurements.

Terminals

at

a

rear

panel

permit

application

on.

an

externally

supplied

dc

bias

up

to

±200

volts

to

the

test

specimen

on

capacitance

measurements

only.

Bias

cannot

be

provided

for

inductance

measurements.

A

linear

dc

output

is

available

at

rear

panel

terminals

which

is

proportional

to

the

meter

reading.

This

output

extends

the

range

of

application

beyond

laboratory

measurements

to

include

production

testing

as

well

as

a

variety

of

control

functions.

2.2

Model

7lAR

The

Model

7lAR

provides

the

performance

characteristics

of

the

Model

7lA

in

rack-mounting

form.

In

every

respect

its

electrical

specifications

are

identical

to

those

of

the

bench

unit.

In

addition,

the

Model

7l-lA

Standard

Capacitor

is

incorporated

in

the

Model

7lAR

and

is

switched

into

service

by

a

front

panel

selector.

*

*

*

For

the

location

and

explanation

of

all

controls

and

adjust-

ments

of

the

Models

71A

and

71AR,

see

pages

2-2

through

2-7.

2-1

7lA

c