IFR FM/AM-1200A

IFR FM/AM-1200A

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STEP

PROCEDURE

8.

Repeater

Access

Test.

This

test

measures

a

mobile

unit's

performance

by

simulating

a

repeater's

sequence

of

idle

and

Push-to-Talk

acknowledgement.

To

perform

a

Trunking

equipment

test,

the

FM/AM-1200S

(acting

as

a

repeater)

must

be

informed

of

the

offset

used

between

the

Trunking

Receive

and

Transmit

frequencies.

a.

b.

c.

Press:

Iii.

The

following

appears

on

the

VFD:

If

the

UUT

operates

in

the

lower

(806

MHz

to

866 MHz),

press:

~~~

band

of

~r;:l

~

L"J

Trunking

frequencies

If

the

UUT

operates

in

the

hi~band

of

Trunking

J

[i]

~TER

---

(896

MHz

to

940 MHzl.

press:

on

'"

.

frequencies

RF

#0

must

be

set

to

the

UUT's

transmit

frequency.

d.

Place

the

MODE

Selector

C39l

to

DUP.

e.

Program

the

Trunking

parameters

of

the

UUT

as

described

for

the

"Simple

Encode

Test•.

Section

5-13-4.

Step

6-d.

f.

f!!r1

Press:

LmJ

parameters

!ill~!

entered

. The

VFD

displays

in

step

"e.•

above.

the

programmed

g.

Press

the

Push-to-Talk

switch

CPTT)

on

the

UUT.

When

the

FM/AM-1200S

detects

a

transmission,

it

continuously

transmits

a

Push-to-Talk

acknowledge

message,

causing

the

UUT

to

lock

on

Cunsquelch)

its

transmitter

and

allow

voice

transmission.

Transmitted

sound

deflects

the

MODULATION

Meter

(1).

The FM/AM-1200S

only

allows

one

repeater

access.

The

test

will

end

with

the

release

of

the

PTT.

To

repeat

~~~1;1;1

.

the

test.

press

UiiLJ

l;J

~ ~

aga1n.

5-5

3

08

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