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H
52005-301D
TABLE
1
(cont.
)
Ratio down
Ratio
up
Voltage
Power
Decibels
Voltage
Power
·1585
·02512
16
6·310
39·81
·1413
·01995
17
7·079
50·12
·1259
·01585
18
7·943
63·10
·1122
·01259
19
8·913
79·43
·1000
·01000
20
10·000
100·00
·07943
6·310
X
10-
1
22
12·59
158·5
·06310
3·981
X
10-
1
24
15·65
251·2
·05012
2·512
X
10·
1
26
19·95
398·1
·03981
1·585
X
10·
3
28
25·12
631·0
·03162
1·000
X
10·
3
lO
31·62
1,000
·02512
6·310
X
10-~
32
39·81
1·585
X
10)
·01995
3·981
X
10·
4
34
50·12
2·512
X
10
3
·01585
2·512
X
10
4
36
63-10
3·981
X
10
3
·01259
1·585
X
10-t
38
79·43
6·310
X
10
3
·01000
1·000
X
10-4
~
100·00
1·000
X
10
4
7·943
X
10-
1
6·310
X
10-s
42
125·9
1·585
X
10
4
6·310
X
10·
1
3·981
x
1o-s
44
158·5
2·512
X
10 ..
5·012
X
10·
3
2·512
X
10-s
46
199·5
3·981
X
10
4
3·981
X
10·
3
1·585
X
10-s
48
251·2
6·310
X
10
4
3·162
X
10-
3
1·000
X
10-s
50
316·2
1·000
X
10
5
2·512
X
10·
3
6·310
X
10-{,
52
398·1
1·585
X
10
5
1·995
X
10·
1
3·981
X
1 0-{,
54
501·2
2·512
X
10
5
1·585
X
10·
1
2·512
X
10-{,
56
631·0
3·981
X
10
5
1·259
X
10·
3
1·585
X
10·'
58
794·3
6-310
X
10
5
1·000
X
10-
3
1·000
X
10-{,
60
1,000
1·000
X
10'
'
5·623
X
10-t
3·162
X
10-
7
65
1·778
X
10
3
3·162
X
10'
;
3·162
X
10
4
1-000
X
10-
7
70
3·162
X
10
3
1·000
X
10
7
1·778
X
10-t
3·162
X
10""'
75
5·623
X
10
3
3·162
X
10
7
1·000
X
10
4
1·000
X
10-e
80
1·000
X
10
4
1·000
X
10'
5·623
X
10-s
3·162
X
10-'
85
1·778
X
10
4
3·162
X
10'
3·162
X
10-s
1·000
X
10-'
90
3·162
X
10
4
1·000
X
10
9
1·000
X
10-s
1·000
X
10-
10
100
1·000
X
10
5
1·000
X
10
10
3·162
x
1o··'
1·000
X
10-
11
110
3·162
X
10
5
1·000
X
10
11
1·000
X
1 0-{,
1·000
X
10-
12
120
1·000
X
10
6
1·000
X
10n
3·162
X
10-
7
1·000
X
1 Q-
13
130
3·162
X
10
6
1·000
X
10u
1·000
X
10-
7
1·000
X
10'
14
140
1·000
X
10
7
1·000
X
10
14
49.
If
the
output
impedance is adjusted
to
any
of
the
other
possible
values
and the
load
matches
this
value,
then,
although
the
attenuation
of power is that read from the dials
as
described
abo,·e,
some
dB
correction must be added
to determine the output voltage.
This
correction
represents
the
voltage s
t
ep-down ratio of
the
output
matching
transformer.
The output \'oltage
across a
matched
load,
V
om -
(A
+
R)
dB
below
Vin
where A is the total attenuation indicated
by
the
dials
in
dB,
R is
the
voltage
step-down
ratio of the output matching
tra
nsformer
in
dB
(Table
2)
and
V in
is the input
voltage
read
on the
input
meter.
Chap.
3
Page
10
Nov.
79
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