D I R E C T Dtmf A N D I M T S E N T R I E S - IFR Systems FM/AM-1200S/A Operation Manual

Communications service monitor
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A1 t e r n a t e M e t h o d F o r
C h a n g i n g Wave S h a p e :
ENTER
@
f o r S i n e Wave
1 f o r S q u a r e Wave
2 f o r Ramp Wave
3 f o r T r i a n g l e
Wave
D e p r e s s
K e y .
S I N E WAVE
-
~
SQUARE WAVE
-mi
RAMP WAVE
. .
T R I A N G L E WAVE
DTMF m a y b e u s e d s i m u l t a n e o u s l y w i t h t h e
v a r i a b l e t o n e g e n e r a t o r f o r a u d i o t o n e
e n c o d i n g .
4 - 2 - 3
D i r e c t DTMF a n d I M T S E n t r i e s
KEY ENTRY
A C T I O N
DTMF o r I M T S
S e l e c t e d f u n c t i o n a p p e a r s o n l e f t s i d e o f VFD
( 3 7 ) a n d VFD c u r s o r i s p o s i t i o n e d o n f i r s t
c h a r a c t e r .
I f n o k e y i s d e p r e s s e d a f t e r a p p r o x i m a t e l y 6
s e c o n d s ,
s e l e c t i o n w i l l
d e f a u l t t o RF f u n c t i o n .
T h e DTMF t o n e i s s e t a t a f i x e d 1 e v e 1 t o
m o d u l a t e t h e g e n e r a t o r a t a p p r o x i m a t e l y
3 . 5
k H z .
O p e r a t o r ' s C h o i c e :
S e l e c t e d c h a r a c t e r
( n u m b e r ,
l e t t e r o r s y m b o l
)
0
t h r u 9 ,
A t h r u
w i l l
b e d i s p l a y e d ,
i n p r o g r e s s i o n ,
o n VFD ( 3 7 ) .
D ,
#
a n d / o r
*

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