5 - 1 2
SECTION 5
COMMON PRACTICES
5-1-6
GENERATING RF SIGNAL USING EXTERNAL MODULATION
T h i s p r o c e d u r e c o n f i g u r e s t h e R F G e n e r a t e O p e r a t i o n S c r e e n t o t r a n s m i t a n R F S i g n a l
F M M o d u l a t e d w i t h 1 k H z E x t e r n a l M o d u l a t i o n S o u r c e .
T h e d e v i a t i o n i s s e t a t 5 k H z b y a d j u s t i n g t h e i n p u t l e v e l o f t h e M o d u l a t i o n
S i g n a l .
T h e O u t p u t L e v e l i s - 5 0 d B m .
P
R
E
P
o
S e t R F F i e l d t o
R c v r C e n t e r F re q u e n c y
.
o
S e t O u t p u t L e v e l t o
- 5 0 d B m
.
o
S e t O u t p u t t o
T / R
.
o
S e l e c t E x t e r n a l M o d u l a t i o n (
EXT
) f o r M o d u l a t i o n S o u r c e .
o
S e t M o d u l a t i o n T yp e t o
F M
.
o
S e t D e v i a t i o n R a n g e t o
N A R 3
.
o
C o n f i g u r e R F G e n e r a t e O p e r a t i o n S c r e e n f o r a c t i v e
SC O PE
.
o
S e t O s c i l l o s c o p e S w e e p f o r
1 m s / d i v
.
o
S e t O s c i l l o s c o p e S o u r c e f o r
Sco p e /D VM- A C
.
o
C o n n e c t E x t e r n a l M o d u l a t i o n S o u r c e t o S C O P E / D V M I N C o n n e c t o r .
o
S e t E x t e r n a l M o d u l a t i o n S o u r c e f o r 2 . 5 V p . T h i s s e t t i n g p r o d u c e s 5 k H z D e v i a t i o n
i n d e p e n d e n t o f s i g n a l s h a p e .
o
C o n n e c t E x t e r n a l M o d u l a t i o n S o u r c e t o E X T M O D I N C o n n e c t o r .
Содержание COM-120C
Страница 1: ...comMQRPc c š ƒ o ƒ mƒ šƒ QPPRMPVPQMRpP advancing wireless test s m ...
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Страница 41: ...1 24 SECTION 1 INTRODUCTION THIS PAGE INTENTIONALLY LEFT BLANK ...
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Страница 290: ...6 115 SECTION 6 OPTIONS 1 Monitor Filter Softkeys See Appendix D 2 Radio Monitor Softkeys See Appendix D ...
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Страница 318: ...USER REPLACEABLE BATTERY AND FUSES BATTERY VOLTAGE FUSE INSTRUCTIONS ...
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