Wavetek 132 Spécifications télécharger pdf (Page 56)

2b)

Q:

Calculate

the

quantization

step

size

for

this

signal

(0

to

10

volt

analog

input

converted

to

an

eight

bit

digital

output).

A:

The

resolution

for

8

bit

quantizing

is

2

8

=

256.

00000000

=

Ov,

11111111

=

lOv,

V

Mlc-e

=9.97

v

Cstepsize

V

FS

/(2

n

-l)

=

9.97/(256-1)

=

.039

v

Q:

Measure

the

quantization

step

size

and

compare

with

your

calculations.

A:

By

measuring

the

voltage

required

to

change

one

bit

we

can

tell

the

quantization

step

size

is

.03

volts.

Q:

Draw

a

quantizing

characteristic

plot

for

the

first

3

bits.

.03

.06

.09

.12

.16

.20

23

26

Lab

2

Solutions

Page

4

46

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