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4-2-10 AUDIO FREQUENCY COUNTER
Th e A ud i o Fr e q ue n c y C ou n ter f or t he R F Re ce i v e r c ou n t s th e a ud i o f r eq u en c y w h en
th e r e c e i ve d RF Si g nal i s m od u la t in g .
Fr e qu e n c y Co u nt er i s p r o v i de d b y t h e A ud i o/D a t a F i l ter s .
C o n f i g u r e a n d o p e r a t e t h e A u d i o F r e q u e n c y C o u n t e r
f o l l o w s :
ZOOM
D i sp l a y s f u l l s c r e e n A u d i o F r e q u e n c y C o u n t e r .
S e l e ct R a n g e a s f o l l o w s :
200 Hz
S e l e ct s 2 0 0 H z r a n g e .
2000 Hz
S e l e ct s 2 0 0 0 H z r a n g e .
20 kHz
S e l e c t s 2 0 k H z r a n g e .
AUTO
S e l e c t s A u t o r a n g e .
I f P e a k H o l d F u n ct i o n i s d e s i r e d , t a ke
m e t e r o u t o f A u t o r a n g e a n d co n f i g u r e a s
f o l l o w s :
OFF/ON
T o g g l e s P e a k H o l d F u n ct i o n O N o r O F F .
RST PK
R e se t s P e a k H o l d F u n c t i o n .
F i lt er in g f or th e si g na l p a s s ed t o t he A ud i o
Source:
Range:
Peak Hold:
Average:
Upper Limit:
Lower Limit:
Alarm:
Gate Time:
Peak Hold:
Average:
4-51
SECTION 4
OPERATION
DEMOD
2000 Hz
ON
2
ON
ON
1900 Hz
ON
100 Hz
OFF
1 S
ON
ON
2
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