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I
NTRODUCT
I
ON
I n t h e past, r e a l - t i m e a n a l y s i s o f the a u d i o spectrum has been an expensive
process r e q u i r i n g a s u b s t a n t i a l
i n t e s t equi pment.
The
b e n e f i t s o f such a n a l y s i s have l o n g been appreciated, b u t t h e process
has been so c o s t l y t h a t o n l y those w i t h s u f f i c i e n t l y l a r g e o p e r a t i n g
budgets have been a b l e t o a f f o r d
i t .
The
Spectrum Analyzer i s a v e r s a t i l e p i e c e o f t e s t equipment t h a t
i s capable o f making b o t h r e l a t i v e and a b s o l u t e measurements i n the
a u d i o spectrum.
Frequency response,
f i e r gain, i n s e r t i o n l o s s ,
sound pressure l e v e l s ,
and v o l t a g e t e s t i n g r e p r e s e n t a few o f t h e
measurement appl i c a t i o n s . U n l i k e a t y p i c a l v o l tmeter, t h e
s i m u l t a n e o u s l y d i s p l a y s the octave frequencies o f the s i g n a l s being
measured.
The user can s e l e c t a d e t e c t o r response f o r p i n k n o i s e
a v e r a g i n g o r a f a s t response f o r r e a l t i m e s i g n a l m o n i t o r i n g .
Many
v a l u a b l e uses can a l s o be made o f the b u i l t - i n p r e c i s i o n p r e a m p l i f i e r .
Every
i s b u i l t t o l a s t .
The case i s aluminum, f u s i o n bonded w i t h
n y l o n , and i n t e r n a l c o n s t r u c t i o n i s 100% modular.
Every
i s
t h o r o u g h l y and p a i n s t a k i n g l y t e s t e d t o assure complete
Each u n i t i s then heat t e s t e d i n an oven f o r
72 hours a t
125 F t o assure
r e l i a b i l i t y . Any u n i t t h a t doesn't measure up d o e s n ' t l e a v e t h e factory.
The f o l l o w i n g pages i n t h i s manual e x p l a i n t h e many f e a t u r e s and uses of
t h e
We suggest t h a t
i t be read t h o r o u g h l y .
With
y o u r
you s h o u l d have r e c e i v e d t h e f o l owing standard accessories
p i c t u r e d below:
Audio Spectrum Analyzer.
" Fast Charge" n i c k e l cadmium b a t t e r i e s
(mounted i n s i d e t h e
AC
t h a t p r o v i d e s
continuous i n e
on.
V i n y l c a r r y i n g case w i t h
t
loop.
Standard phono p l u g patch cord.
(Not
p i c t u r e d
)
O p e r a t o r ' s Manual w i t h
i l u s t r a t i o n s
and
es
.
F i g u r e
1
I t
i s recommended t h a t y o u r
be charged f o r two t o t h r e e hours
a f t e r
i t
i s unpackaged.
T h i s
w i l l assure a f u l l two hours o f o p e r a t i n g
t i m e before recharging i s again necessary.
Make s u r e t h e v o l t a g e s e l e c t i o n s w i t c h on t h e IE-165A
i s
i n t h e c o r r e c t p o s i t i o n f o r t h e l i n e v o l t a g e b e i n g used ( e i t h e r
o r
230 v. AC a t 50-60
H z ) .
Summary of Contents for IE-10A
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