EUCOL U2836 - Page 53

U2836 Operation Manual Chapter 5 Execute LCR operation and some examples
49
Figure B is the basic accuracy modification curve, where V
s
is the test signal
voltage.
10m 20m
50m
5m
100m
200m 500m
123
1
2
5
10
20
50
100
1.2150m
Ar
[Vrms]
Table A Impedance rate factors: K
a
, K
b
Speed Frequency K
a
K
b
Medium
Slow
f
m
<100Hz
)
100
1)(
200
1)(
101
(
3
msm
fVZ
++
×
−
)
100
1)(
70
1)(101(
9
ms
m
fV
Z ++×
−
100Hz≤fm
≤100kHz
)
200
1)(
101
(
3
sm
VZ
+
×
−
)
70
1)(101(
9
s
m
V
Z +×
−
100kHz<f
m
≤200kHz
)
200
2)(
101
(
3
sm
VZ
+
×
−
)
70
1)(103(
9
s
m
V
Z +×
−
Fast
f
m
<100Hz
)
100
1)(
400
1)(
105.2
(
3
msm
fVZ
++
×
−
)
100
1)(
100
1)(102(
9
ms
m
fV
Z ++×
−
100Hz≤fm
≤100kHz
)
400
1)(
105.2
(
3
sm
VZ
+
×
−
)
100
1)(102(
9
s
m
V
Z +×
−
100kHz<f
m
≤200kHz
)
400
2)(
105.2
(
3
sm
VZ
+
×
−
)
100
1)(106(
9
s
m
V
Z +×
−
Where, f
m
is the test frequency and the unit is [Hz].
The unit of the tested impedance is [Ω].
The unit of the test signal voltage is [mV
rms
].
When the impedance is smaller than 500Ω, K
a
, K
b
is unavailable.
When the impedance is larger than 500Ω, K
a
, K
b
is unavailable.