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APPLICATIONS
16
F r e q u e n c y response of a m p l i f i e r
©
G a i n r e d u c e d at h i g h - f r e q u e n c y
G a i n rises at h i g h - f r e q u e n c y
(D
G a i n r e d u c e d at l o w - f r e q u e n c y
©
G a i n rises at l o w - f r e q u e n c y
©
W i t h l o u d n e s s c o n t r o l set O N .
©
G a i n having w a v i n g c h a r a c t e r i s t i c c u r v e
( c )
M e a s u r e m e n t s t h r o u g h t h e D i r e c t D e f l e c t i o n T e r m i n a l s
A l t h o u g h
f r e q u e n c i e s b e l o w
f r e q u e n c i e s m u s t be m e a s u r e d t h r o u g h t h e d i r e c t d e f l e c t i o n t e r m i n a l s .
D I R — N O R s w i t c h ( 2 2 ) t o D I R , a n d c o n n e c t t h e signal t o b e m e a s u r e d , t o D I R ( 2 1 ) a n d G N D
( 2 0 ) .
Fig. 8 Connected example of direct deflection terminals
R e m a r k :
T h e d u m m y load s h o u l d be of a n o n - i n d u c t i v e t y p e as this m a y a f f e c t h i g h - f r e q u e n c y c h a r a c t e r i s t i c s of t h e u n i t .
5
M H z
c a n b e
m e a s u r e d t h r o u g h t h e
S q u a r e w a v e
o u t p u t
100Hz
i n t e r n a l
a m p l i f i e r ,
F o r d i r e c t c o n n e c t i o n , s e t
CO-1303D
Rear Panel
50Q/75Q
D u m m y
L o a d
I KHz
h i g h e r
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