IFR Systems FM/AM-1200S/A Operation Manual page 194

Communications service monitor
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STEP
PROCEDURE
- 1
A A , A A
W a t t s Peak (WP)
S i g n a l L e v e l
D i s t o r t i o n L e v e l ( D I
)
SINAD ( S I )
T h e S I N A D d i s p l a y e d o n t h e VFD u s i n g t h e a b o v e
m e t h o d w i l l
a l w a y s b e " 0 1 . 0 0 " .
T o p e r f o r m a S I N A D
t e s t i n t h e M a n u a l M o d e .
c o m p l e t e p r o c e d u r e 5 - 1 4 - 5 .
6 .
T o r e t u r n t o t h e C e l l u l a r t e s t p r o c e d u r e s , p r e s s :
p j
5 - 1 4 - 5
M a n u a l
C e l l u l a r T e s t S I N A D M e a s u r e m e n t
T o m e a s u r e t h e S I N A D o f t h e UUT w h i l e i n t h e m a n u a l C e l l u l a r T e s t ,
c o m -
-
p l e t e t h e f o l l o w i n g s t e p s :
d
STEP
PROCEDURE
1.
C o m p l e t e P r o c e d u r e s 5 - 1 4 - 2 t h r u 5 - 1 4 - 4 a s a p p l i c a b l e .
=
2 .
C o n n e c t t h e A u d i o S i g n a l
O u t p u t o f
t h e UUT t o t h e EXT M O D I S I N A D
C o n n e c t o r
( 1 5 ) o f t h e F M I A M - 1 2 0 0 s .
T h e S I N A D M e t e r h a s a r a n g e o f 3 d B t o 2 0 d B a t
1 k H z ,
a n a c c u r a c y o f +1 dB a t 1 2 d B S I N A D a n d a n
I n p u t L e v e l o f
0 . 2 5
VRMS t o 2 VRMS ( 1 0 VRMS M a x i -
m u m ) .
3 .
P l a c e M o d u l a t i o n METER C o n t r o l
( 4 ) t o S I N A D .
T h e MODULATION
M e t e r ( 1 ) w i l l
g o t o f u l l d e f l e c t i o n .

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