IFR Systems FM/AM-1200S/A Operation Manual page 169

Communications service monitor
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STEP
PROCEDURE
5 .
S i m p l e H a n d s h a k e T e s t .
T o s i m u l a t e t h e F M / A M - 1 2 0 0 s m a k i n g a S i m p l e
H a n d s h a k e w i t h a m o b i l e u n i t ,
p e r f o r m t h e f o l l o w i n g s t e p s :
a .
P l a c e t h e M O D E S e l e c t o r C o n t r o l
( 3 9 )
t o DUP.
b .
P r e s s :
.
T h e f o l l o w i n g d i s p l a y a p p e a r s o n t h e " I D :
c .
P r e s s :
.
T h e f o l l o w i n g d i s p l a y a p p e a r s :
d .
P r e s s :
.
As t h e F W / A N - 1 2 D O S b e g i n s t r a n s m i t t i n g t h e
p r o g r a m m e d d a t a w o r d t o t h e U U T , t h e VFD d i s p l a y s :
T h e s i m u l a t e d r e p e a t e r u n i t ( t h e F M / A M - 1 2 0 0 s )
l o o k s f o r
d
v a l i d m o b i l e p u s h - t o - t a l k r e q u e s t .
e .
P r e s s t h e U U T ' s
" P u s h - t o - T a l k " s w i t c h .
I f t h e i n c o m i n g d a t a
w o r d i s v a l i d ,
t h e VFD d i s p l a y s :
V o i c e t r a n s m i s s i o n m a y n o w t a k e p l a c e .
f .
R e l e a s e t h e U U T ' s
" P u s h - t o - T a l k " s w i t c h .
T h e UUT t r a n s m i t s a
d a t a w o r d c o n t a i n i n g t h e e n d c o d e a n d t h e VFD d i s p l a y s :
T h e F M / A M - 1 2 0 0 s n o w s e n d s t h e l a s t h a n d s h a k e m e s s a g e o n c e
I f a n y o f
t h e a b o v e VFD d i s p l a y s f a i l
t o a p p e a r ,
t h e
t e s t h a s f a i l e d .

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