IFR FM/AM-1200A

IFR FM/AM-1200A

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If

the

UUT

uses

the

lower

band

of

trunking

frequencies

(806

MHz

to

866

MHz)

procede

to

the

desired

tests

from

this

point.

If

the

UUT

uses

the

upper

band

of

trunki[;]f;Je

uencies

l:l~

. 2

( 896

MHz

to

940 MHz).

press:

~

L:J

~

~

. The

following

screen

appears

on

the

VFD:

lllel

I

lei

I I

lei

I

lei

I I

lei

Ill

The

first

programming

location

on

the

screen:

m

flashes

on

and

off,

indicating

this

i s

the

cursor

position.

shows:

Press:

[i].

This

programming

location

now

m

Press:~.

The

desired

tests

Trunking

systems

using

the

upper

frequency

band

may

now

be

performed.

5-13-4

Simple

Encode/Simple

Decode

Modes

And

Repeater

Access

Test

This

mode

is

used

to

determine

if

a

transmitter/receiver

UUT

is

prop-

erly

receiving

and

utilizing

a

signal

from

the

FM/AM-12005,

which

simu-

lates

the

encoding

and

decoding

processes

of

either

a

mobile

unit

or

a

repeater

(both

can

be

tested

in

a

similar

fashion).

To

test

these

modes,

perform

the

following

steps:

STEP

1.

PROCEDURE

Set

the

FM/AM-12005

front

panel

controls

to

the

setting

as

listed

in

Table

5-11.

2.

Connect

the

UUT

to

the

FM/AM-12005

as

indicated:

5-48

08

For

testing

mobile

unit

Encode

or

Decode.

connect

UUT

to

T/R Con-

nector

(11).

For

testing

repeater

Encode,

connect

UUT

receiver

to

T/R

Connec-

tor

(11)

and

UUT

transmitter

to

50 n

load.

For

testing

repeater

Decode,

connect

UUT

receiver

to

DUPLEX

Con-

nector

(14)

and

UUT

transmitter

to

T/R

Connector

(11).

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