Operation Of Frequency Counter - Kenwood FL-180A Instruction Manual

Wow flutter meter
Hide thumbs Also See for FL-180A:
Table of Contents

Advertisement

Operation of frequency counter

1. S e t t h e M O D E s w i t c h @>to F R E Q • C O U N T E R
m e a s u r e d t o t h e i n p u t t e r m i n a l @ .
if t h e i n p u t s i g n a l is m o r e t h a n 1 0 0 m V , i n d i c a t i n g
a s a f r e q u e n c y c o u n t e r .
N o t e :
I f i n p u t f r e q u e n c y e x c e e d s 9.999 k H z w i t h t h e G A T E
( g a t e t i m e : 1 s e c o n d ) , t h e O V E R F L O W
N o t e t h a t 10 k H z a n d o v e r d i g i t s a r e n o t d i s p l a y e d .
i s i n p u t , " 3 . 2 5 6 " i s d i s p l a y e d . )
I f i n p u t f r e q u e n c y e x c e e d s 55.00 k H z w i t h t h e G A T E
( g a t e t i m e : 0.1 s e c o n d ) , t h e O V E R F L O W
f r e q u e n c y i s o u t of t h e m e a s u r e m e n t
2. S e l e c t t h e p o s i t i o n t h e R E F E R E N C E
s e t t h e r e f e r e n c e t i m e ( t i m e g a t e ) f o r c r y s t a l c o n t r o l o r A C p o w e r
s y n c h r o n i z a t i o n .
F i g . 6 s h o w s t h e c o n n e c t i o n s o f t h e F L - 1 8 0 A a n d t h e
F i g . 6
T h e L E V E L
T h e f r e q u e n c y
i s i n d i c a t e d
l a m p ®
r a n g e .
F R E Q U E N C Y s w i t c h o n t h e r e a r p a n e l t o
FL-180A
Oscillator
5
C o n n e c t i o n o f t h e F L - 1 8 0 A a n d t h e
a n d c o n n e c t a s i g n a l t o
M O N I T O R
l a m p ©
t h a t t h e F L - 1 8 0 A
in
" H z " .
T I M E
b u t t o n r e l e a e d
f l i c k e r s , i n d i c a t i n g
( E x a m p l e : I f 1 3 . 2 5 6 k H z
T I M E
b u t t o n d e p r e s s e d
l a m p ®
g o e s o u t , i n d i c a t i n g
o s c i l l a t o r .
o s c i l l a t o r
be
w i l l l i g h t
is
o p e r a t i n g
o v e r f l o w .
t h e
f r e q u e n c y
13

Advertisement

Table of Contents
loading

Table of Contents