P
P
a
a
g
g
e
e
2
2
4
4
o
o
f
f
3
3
8
8
I
I
N
N
S
S
T
T
R
R
U
U
C
C
T
T
I
I
O
O
N
N
M
M
A
A
N
N
U
U
A
A
L
L
C
C
D
D
N
N
M
M
-
-
s
s
e
e
r
r
i
i
e
e
s
s
C
C
O
O
U
U
P
P
L
L
I
I
N
N
G
G
/
/
D
D
E
E
C
C
O
O
U
U
P
P
L
L
I
I
N
N
G
G
N
N
E
E
T
T
W
W
O
O
R
R
K
K
S
S
(
(
C
C
D
D
N
N
s
s
)
)
S
S
E
E
C
C
T
T
I
I
O
O
N
N
6
6
-
-
T
T
E
E
S
S
T
T
L
L
E
E
V
V
E
E
L
L
C
C
A
A
L
L
I
I
B
B
R
R
A
A
T
T
I
I
O
O
N
N
1
1
9
9
1
1
2
2
1
1
E
E
L
L
T
T
O
O
R
R
O
O
R
R
O
O
A
A
D
D
●
●
S
S
I
I
L
L
V
V
E
E
R
R
A
A
D
D
O
O
,
,
C
C
A
A
L
L
I
I
F
F
O
O
R
R
N
N
I
I
A
A
9
9
2
2
6
6
7
7
6
6
●
●
(
(
9
9
4
4
9
9
)
)
4
4
5
5
9
9
-
-
9
9
6
6
0
0
0
0
●
●
c
c
o
o
m
m
-
-
p
p
o
o
w
w
e
e
r
r
.
.
c
c
o
o
m
m
Rev072518
6
6
.
.
0
0
T
T
e
e
s
s
t
t
L
L
e
e
v
v
e
e
l
l
C
C
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
o
o
n
n
This following sections describe the calculations, measurement setups, as well as a step-
by-step procedure for performing test level calibration per the IEC 61000-4-6 standard.
Test level calibration is typically performed prior to the start of a test, for the purpose of
setting the specific level for the test to be performed (i.e.: 1 Vrms, 3 Vrms, 10 Vrms, etc.).
This calibration, as well as the actual test, is performed at a minimum of 633 discrete
frequencies. While it is possible to perform these processes manually (without software), it
is highly recommended that it be performed as an automated process, under software
control.
6
6
.
.
1
1
C
C
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
o
o
n
n
M
M
e
e
t
t
h
h
o
o
d
d
s
s
Per the IEC 61000-4-6 standard, there are two acceptable methods for
monitoring/recording the test generator output level when the appropriate test
level is obtained at any given frequency during the calibration, so that the same
respective level can be reproduced during the actual testing process. For the
purposes of this procedure, we will refer to these methods as
METHOD A (Signal
Generator Output Method)
and
METHOD B (Forward Power Method)
. Shown in
Figure 12 are examples of the Test Generator Equipment used for the two
respective methods.
F
F
i
i
g
g
u
u
r
r
e
e
1
1
2
2
-
-
E
E
x
x
a
a
m
m
p
p
l
l
e
e
s
s
o
o
f
f
T
T
e
e
s
s
t
t
G
G
e
e
n
n
e
e
r
r
a
a
t
t
o
o
r
r
E
E
q
q
u
u
i
i
p
p
m
m
e
e
n
n
t
t