125
Accuracy
10m
20m
50m
5m
100m
200m
500m
1
2
3
1
2
5
10
20
50
100
1.2
150m
Ar
[Vrms]
Table 13-1
Impedance scale factor Ka, Kb
Speed
Frequ
ency
K
a
K
b
Medium 1
Medium 2
Slow
f
m
<
10
0Hz
)
100
1
)(
200
1
)(
10
1
(
3
m
s
m
f
V
Z
+
+
×
−
)
100
1
)(
70
1
)(
10
1
(
9
m
s
m
f
V
Z
+
+
×
−
100H
z
≤
fm
≤100
kHz
)
200
1
)(
10
1
(
3
s
m
V
Z
+
×
−
)
70
1
)(
10
1
(
9
s
m
V
Z
+
×
−
fm
>
1
00kH
z
)
200
2
)(
10
1
(
3
s
m
V
Z
+
×
−
)
70
1
)(
10
3
(
9
s
m
V
Z
+
×
−
Fast
f
m
<
10
0Hz
)
100
1
)(
400
1
)(
10
5
.
2
(
3
m
s
m
f
V
Z
+
+
×
−
)
100
1
)(
100
1
)(
10
2
(
9
m
s
m
f
V
Z
+
+
×
−
100H
z
≤
fm
≤100
kHz
)
400
1
)(
10
5
.
2
(
3
s
m
V
Z
+
×
−
)
100
1
)(
10
2
(
9
s
m
V
Z
+
×
−
fm
>
1
00kH
z
)
400
2
)(
10
5
.
2
(
3
s
m
V
Z
+
×
−
)
100
1
)(
10
6
(
9
s
m
V
Z
+
×
−
In this table,
fm: test frequency [Hz]
Zm: impedance of the device under test [
]
Vs: test signal voltage [mVrms]
When the impedance is
＜
500Ω,
K
a
is used, K
b
is invalid.
When the impedance is
＞
500
Ω,
K
b
is used, and K
a
is invalid.
Table 13-2
Temperature factor Kc
Temperature
（℃）
5 8 18 28 38
Kc
6 4
2
1
2
4
Table 13-3
Calibration interpolation factor Kf