Wavetek 132 Dokumentacja Pobierz pdf (Strona 37)

3a)

Q:

What

are

the

measured

frequency

components

and

their

amplitudes

for

each

signal?

A:

Channel

Amp

(mv)

Freq(KHz)

A

(sine)

0.394

0.976

B

(square)

1st

harmonic

0.402

4.052

2nd

harmonic

0.171

12.10

3rd

harmonic

0.104

20.16

C

(A+B)

1st

harmonic

0.659

0.976

2nd

harmonic

0.171

4.052

3rd

harmonic

0.104

12.10

4th

harmonic

0.209

Q:

How

do

these

measurements

compare

to

the

theoretical

FT's

computed

in

part

2?

A:

The

sine

wave

amplitude

is

off,

but

the

frequency

is

quite

close

to

1

KHz.

The

square

and

summed

wave's

fundamental

amplitude

is

off

but

the

amplitude

of

the

additional

harmonics

are

correct

with

respect

to

the

fundamental.

Lab

1

Solutions

Page

3

27

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