dB 0,0
0,1
0,2 0,3
0,4
0,5
0,6
0,7 0,8
0,9
0 1,000 1,012 1,023 1,035 1,047 1,059 1,072 1,084 1,096
1,109
1
1,122
1,135 1,148 1,161 1,175 1,189 1,202 1,216 1,230 1,245
2
1,259 1,274 1,288
1,303 1,318
1,334
1,349 1,365 1,380
1,396
3
1,413
1,429 1,445 1,462 1,479 1,496 1,514 1,531 1,549 1,567
4 1,585 1,603 1,622 1,641
1,660
1,679
1,698
1,718 1,738 1,758
5
1,778 1,799
1,820
1,841
1,862
1,884 1,905 1,928 1,950
1,972
6
1,995 2,018 2,042 2,065 2,089 2,113 2,138 2,163 2,188
2,213
7 2,239 2,265 2,291 2,317 2,344 2,371 2,399 2,427 2,455 2,483
8
2,512 2,541 2,570 2,600 2,630 2,661 2,692 2,723 2,754 2,786
9
2,818 2,851 2,884 2,917 2,951 2,985 3,020 3,055 3,090 3,126
10
3,162 3,199 3,236
3,273
3,311 3,350 3,388 3,428 3,467 3,508
11
3,548 3,589
3,631 3,673
3,715
3,758 3,802 3,846 3,890 3,936
12
3,981 4,027 4,
074
4,121 4,169 4,217 4,266 4,315 4,365 4,416
13 4,467
4,519 4,571 4,624 4,677 4,732
4,786
4,842 4,898 4,955
14 5,012 5,070 5,129 5,188
5,248 5,309
5,370 5,433 5,495 5,559
15 5,623
5,689
5,754 5,821 5,888
5,957 6,026
6,095
6,166
6,237
16 6,310 6,383 6,457
6,531
6,607 6,683 6,761 6,839 6,918 6,998
17
7,079
7,161 7,244 7,328 7,413 7,499 7,586 7,674 7,762 7,852
18
7,943 8,035 8,128 8,222
8,318 8,414 8,511
8,610
8,710
8,810
19 8,913 9,016
9,120
9,226
9,333
9,441 9,550 9,661 9,772 9,886
073010
Table 3. 2.
Conversion
of
dB
to
ratio.
Subtract
a
multiple
of
20
(n x
20
where
n
is
a
positive
or
negative
integer
or
0)
from
the
dB
value
to
be
converted
such
that
the
remainder
is
a
positive
number
between
0
and
1 9, 9.
Look
up
the
ratio
of
that
re-
mainder
in
the
table. The
desired
ratio
then
is
1
on
times
the
value
from
the
table.
Example:
-12,6
dB
must
be
converted
to a ratio.
To
get
a
positive
number
between
0
and
1
9,
9
subtract
-20
(=
20
x
(-1
))
from
-12,
6,
giving
+ 7, 4. The
ratio
of
7,4
is
found
in
the
table
to
be
2,344.
Hence
the
ra-
tio
of
-12,6
dB=
2,344
x
ton=
2,344
x
10-1
=
0,2344
3.6.2.
With
4291
Calibration,
With
Integrator
The
vibration
amplitude
can
only
be
calculated
in
the
same
parameter
as set
on
the
Integrator.
To
determine
another
parameter
the
Integrator
must
be
set
and
calibrated
to
that
parameter
and
new
measurements
must
be made.
Slide
Rule QH
0001
provided
with
the
Integrator
is used
to
make
the
calculation
as
follows:
22
To Next Page
Loading...
Need help?
General
