IFR FM/AM-1200A

IFR FM/AM-1200A

294 pages

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

5-11-3

TRACK

ADJUST

While

using

the

3

kHz

or

300

Hz

resolution

band,

whenever

dispersion,

sweep

speed

or

bandwidth

is

changed

or

when

sweeping

an

external

narrow

band

filter,

the

signal

tracking

may

need

to

be

adjusted.

Press

the

+

or

+ key

to

set

the

FM/AM-1200S

to

the

Track

Adjust

mode.

The

following

display

will

appear

on

the

VFD:

This

display

will

be

followed

by

a number from

-

=::;:==:;:==;=::;==r==;=::;==;:j]

I

J-:-Jsl

Cl]

I I

II

I

to

I

1-lslDI

I I

Ill

By

continuing

to

press

or

hold

the+

or+

key,

the

waveform

trace

on

the

Spectrum

Analyzer

screen

may

be

adjusted

to

maximum

amplitude.

At

the

same

time,

the

relative

number

following

the

words

TRACK

ADJ

will

increment

or

decrement

accordingly.

Continue

to

press

or

hold

the+

or

+ key

until

the

trace

reaches

maximum

amplitude.

~

Press

~

This

will

set

the

TRACK

ADJ

relative

number

to

''0''.

Any

further

adjustment

to

the

trace

using

the

TRACK

ADJ

mode

will

then

be

incremented

from

this

"0''

setting.

To

leave

the

TRACK

ADJ

mode,

simply

press

any

other

key

on

the

Keyboard

(

18

) .

5-11-4

VARIABLE

SWEEP

SPEED

The

horizontal

sweep

speed

of

the

Tracking

Generator

may

be

varied

to

allow

better

resolution

of

frequency

and

amplitude

components

by

use

of

the

HORIZONTAL

Sweep

Vernier

Control

(25)

in

a manner

similar

to

that

used

to

vary

the

sweep

speed

of

the

Oscilloscope.

When

the

HORIZONTAL

Sweep

Vernier

Control

(25)

is

in

the

CAL

position

(fully

cw),

the

horizontal

sweep

speed

(see

Table

5-5)

is

divided

by

a

factor

of

one

(1).

As

the

control

is

turned

ccw,

the

horizontal

sweep

is

divided

by

a

factor

of

from one

(1)

to

ten

(10).

5-19

04

Table of Contents