Wavetek 132 Spezifikationen PDF herunterladen (Seite 102)

bands

as

you

saw

them

in

laboratory

3

on

the

RAPIDS

screen.

4)

Press

MKR

and

place

the

marker

on

the

zero

frequency

spike.

The

spike

represents

a

DC

component

within

the

machine

itself.

Note

that

the

frequency

reading

on

the

screen

will

not

read

zero.

This

is

due

to

the

±

5

MHz

accuracy

rating

on

the

system.

On

the

marker

menu,

located

on

the

screen

press

DELTA

Marker.

Rotate

the

knob

to

read

the

frequency

of

the

lower

and

upper

sidebands

in

relationship

to

the

center

frequency

spike.

Q:

What

are

the

frequencies

for

the

carrier

(fj)

and

its

upper

and

lower

sidebands.

Repeat

step

b

to

modulate

f^

onto

the

carrier

f

2

.

Q:

What

are

the

frequencies

for

the

carrier

(f

2

)

and

its

upper

and

lower

sidebands.

c)

Using

a

T-connector,

connect

both

of

the

AM

signals

from

the

Wavetek

186's

to

the

input

of

the

spectrum

analyzer.

This

will

add

the

signals

together.

Your

configuration

should

now

look

like

Figure

1.

WAVETEK

132

OUT

WAVETEKIK

OUT

VCA

IN

=3-

f

WAVETEK

132

HRSMBSpdraaAMlpir

OUT

WAVETEK

IK

VCA

IN

OUT

3~

Figure

1

Lab

4

Page

3

92

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