Accuracy (Ae) vs. Impedance (Z
DUT
) @ Ta =18 ~ 28
℃
Freq. / Z
DCR
100/120Hz
1kHz
10kHz
100kHz
0.1- 1Ω
1.0%+5d
1.0%+5d
1.0%+5d
1.0%+5d
2.0%+5d
1 – 10Ω
0.5%+3d
0.5%+3d
0.5%+3d
0.5%+3d
1.0%+5d
10 – 100kΩ
0.3%+2d
0.3%+2d
0.3%+2d
0.3%+2d
0.5%+3d
100k – 1MΩ
0.5%+3d
0.5%+3d
0.5%+3d
0.5%+3d
1.0%+5d
1M – 20ΜΩ 20Μ− 200MΩ
1.0%+5d
2.0%+5d
1.0%+5d
2.0%+5d
1.0%+5d
5.0%+5d
2.0%+5d
N/A
2.0%+5d (1M – 2MΩ)
Remark
D < 0.1
Note:
All accuracy is guaranteed by proper ratio resistor calibration and open/short
calibration. All accuracy is guaranteed for 10cm distance from VDUTH/VDUTL pins of
ES51920.
If D > 0.1, the accuracy should be multiplied by
Z
C
= 1/2πf C
Z
L
= 2πf L
if D << 0.1 in capacitance mode
if D << 0.1 in inductance mode
1
+
D
2
Sub-display parameters accuracy
Ae = impedance (Z) accuracy
Definition: Q = 1
D
D
2
Rp = ESR (or Rs)
×
(1+
1
1.
2.
)
D value accuracy De = + Ae
×
(1+D)
ESR accuracy Re= + Z
M
×
Ae (Ω)
ie., Z
M
= impedance calculated by
1
or 2πf L
2
π
fC
3.
Phase angle
θ
accuracy
θe=
+ (180/π)
×
Ae (deg)
4-terminals measurement with guard shielding
The DUT test leads are implemented by four terminals measurement. For achieve the
accuracy shown above, it is necessary to do open/short calibration process before
measurement. The test leads for DUT should be as short as possible. If long extended
cable is used, the guard shielding is necessary.
Ver 2.1
9
12/03/01
CYRUSTEK [ Cyrustek corporation ]
