Ver 1.5

17/03/29

22

ES166

LCR/DMM analog front

Freq. / Z

1 - 10

Ω

10 – 100

Ω

100 – 10k

Ω 10k – 100kΩ 100k – 20ΜΩ

Remark

100/120Hz

2.0%+3d

1.0%+2d

0.5%+1d

1.0%+2d

2.0%+3d

D < 0.1

1kHz

2.0%+3d

1.0%+2d

0.5%+1d

1.0%+2d

2.0%+3d

10kHz

3.0%+3d

1.0%+2d

0.5%+1d

1.0%+2d

3.0%+3d

Note:



All accuracy is guaranteed by proper ratio resistor calibration and open/short calibration. All

accuracy is guaranteed for 20cm distance from DTH/DTL pins of ES166.

If D > 0.1, the accuracy should be multiplied by

2

1 D

+

if D << 0.1 in capacitance mode

if D << 0.1 in inductance mode

Ae = impedance (Z) accuracy

Definition: Q =

D

1

Rp = ESR (or Rs)

× (1+

2

1

D

)

1.

D value accuracy De = + Ae

2.

fC

π

2

1

or 2πf L

3.

Phase angle

4-terminals measurement with guard shielding

The DUT test leads are implemented by four terminals measurement. If four wires

measurement is not possible, the accuracy of impedance less 10

Ω should be increased

properly. 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 longer extended cable or probe is used, the guard shielding is necessary. If

guard shielding is not possible, the accuracy of impedance larger than 100k

Ω should be

increased properly.