Datasheet

Page 05
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U1731C/U1732C/U1733C Electrical Specications
Inductance
2
Accuracy = AL + Offset
Range Resolution U1731C/U1732C/U1733C U1732C/U1733C U1733C
100 Hz 120 Hz 1 kHz 10 kHz 100 kHz
20 μH
1
0.001 μH NA NA NA 1.0% + 5 2.5% + 20
200 μH
1
0.01 μH NA NA 1.0% + 5 0.7% + 3 2.5% + 20
2000 μH
1
0.1 μH 0.7% + 10 0.7% + 10 0.5% + 3 0.5% + 3 0.8% + 20
20 mH 0.001 mH 0.5% + 3 0.5% + 3 0.2% + 3 0.3% + 3 0.8% + 10
200 mH 0.01 mH 0.5% + 3 0.5% + 3 0.2% + 3 0.2% + 3 1.0% + 10
2000 mH 0.1 mH 0.2% + 3 0.2% + 3 0.2% + 3 0.5% + 5 1.0% + 10
20 H 0.001 H 0.2% + 3 0.2% + 3 0.5% + 5 1.0% + 5 2.0% + 10
200 H 0.01 H 0.7% + 5 0.7% + 5 1.0% + 5 2.0% + 8 NA
2000 H 0.1 H 1.0% + 5 1.0% + 5 2.0% + 8 NA NA
Notes:
1. The accuracy for ranges 20 uH – 2000 uH is specified after Null function which is used to subtract the inductances of test leads.
2. Inductance is specified to Q > 0.1 and D < 10, otherwise the accuracy is (AL+Offset) x √
(1+D
2
)
Phase Angle of Impedance
Range Resolution Accuracy (θe) Condition
–180° ~180° 0.1°/1° (AZ + Offset/Zx) x180/π D < 1 or Q > 1
Example of calculation shown below is referring to Impedance function with Range of 2000 Ω at frequency of 100 Hz
Impedance Zx AZ Offset θe
1999.9 Ω 19999 0.2% 3 ± 0.12°
199.9 Ω 1999 0.2% 3 ± 0.20°
19.9 Ω 199 0.2% 3 ± 0.98°
1.9 Ω 19 0.2% 3 ± 9.16°
Notes:
1. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless otherwise specified.
2. The “AZ” and Offset are the accuracy specification for impedance measurement.
3. The “π” is approximately 3.14159.
4. The Zx is the display count of the reading.
Dissipation/Quality Factor
Function Range Accuracy (De) Condition
Z 0.001~999 AZ + Offset/Zx x 100% + 3 D < 1 or Q > 1
L 0.001~999 AL + Offset/Lx x 100% + 3 D < 1 or Q > 1
C 0.001~999 AC + Offset/Cx x 100% + 3 D < 1 or Q > 1
Example of calculation shown below is referring to Capacitance function with Range of 200 uF at frequency of 100 Hz.
Capacitance Cx AC Offset De
88.88 μF 8888 0.3% 3 0.334% + 3
Notes:
1. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless otherwise specified.
2. The “AZ, AL, AC” and Offset are the accuracy specifications for Impedance, Inductance, and Capacitance measurement, respectively.
3. The Zx, Lx, and Cx are the display count of the reading. For example, the Cx is 8888 as if the capacitance is 88.88 μF for the range of 200 μF.
4. The Quality Factor is the reciprocal of Dissipation Factor.