IVIE IE-10A, Owner'S And Operator'S Manual

Page: 38 / 88

EXAMPLE
W i t h one o f t h e s e n s i t i v i t y switches s e t t o -10 dB and t h e o t h e r s e t
t o -30 dB, t h e
dB l i n e on the
d i s p l a y changes t o a r e f e r e n c e
o f -40 (- 10 dB p l u s -30 dB
=
-40 as i n F i g u r e 2 9 .
,
Scale
I
-
- -
-
. . .
. . .
REFERENCE
(center
1 1 1 1 1 1 1 1 1 1
F i g u r e 29
The d i s p l a y r e s o l u t i o n s w i t c h i s i n t h e 2 dB p e r s t e p mode and s i g n a l
r e a d i n g s a r e measured u s i n g t h e c e n t e r g r a t i c u l e s c a l e w h i c h i s marked
i n
2
dB steps.
A 250 Hz s i g n a l i s l o c a t e d -8 dB below t h e r e f e r e n c e
s e t t i n g o f -40 a t a l e v e l o f -48 (- 40 p l u s - 8 d B ) .
page 32