U1731C/U1732C/U1733C Electrical Specifications |
Accuracy is given as ±(% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than 80%. Please refer to
the User Guide about the measuring mode specified for each range of L/C/R, series or parallel mode. Measurements performed at the test
socket and necessary Open and Short corrections must prior be done. The accuracy is verified by design and specified type tests. |
|
Accuracy = AZ + Offset |
Range |
Resolution |
|
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
DCR |
2 Ω 1 |
0.0001 Ω |
0.7% + 50 |
0.7% + 50 |
0.7% + 50 |
0.7% + 50 |
1.0% + 50 |
0.7% + 50 |
20 Ω 1 |
0.001 Ω |
0.7% + 8 |
0.7% + 8 |
0.7% + 8 |
0.7% + 8 |
0.7% + 8 |
0.7% + 8 |
200 Ω 1 |
0.01 Ω |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.5% + 5 |
0.2% + 3 |
2000 Ω |
0.1 Ω |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.5% + 5 |
0.2% + 3 |
20 kΩ |
0.001 kΩ |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.5% + 5 |
0.2% + 3 |
200 kΩ |
0.01 kΩ |
0.5% + 5 |
0.5% + 5 |
0.5% + 5 |
0.5% + 5 |
0.7% + 8 |
0.5% + 5 |
2000 kΩ |
0.1 kΩ |
0.5% + 5 |
0.5% + 5 |
0.5% + 5 |
0.7% + 5 |
NA |
0.5% + 5 |
20 MΩ |
0.001 MΩ |
2.0% + 8 |
2.0% + 8 |
2.0% + 8 |
5.0% + 8 |
NA |
2.0% + 8 |
200 MΩ |
0.01 MΩ |
6.0% + 80 |
6.0% + 80 |
6.0% + 80 |
NA |
NA |
6.0% + 80 |
The accuracy for ranges 2 Ω to 200 Ω is specified after Null function is used to subtract the resistance of test leads and the contact resistance. |
Notes:
a. For the ranges of 20 MΩ and 200 MΩ, the R.H. is specified for < 60%
b. Resistance is specified to Q < 10 and D > 0.1, otherwise the accuracy is (AZ + Offset) x √ 1 + Q 2
c. Equivalence Series Resistance (ESR) measurement is determined by impedance measurement and range. The maximum
display is up to 199.99 kΩ and the accuracy is (AZ + Offset) x √ 1 + Q 2 |
|
Accuracy = AC + Offset |
Range |
Resolution |
|
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
20 mF |
0.001 mF |
0.5% + 8 |
0.5% + 8 |
NA |
NA |
NA |
2000 μF |
0.1 μF |
0.5% + 5 |
0.5% + 5 |
0.5% + 8 |
NA |
NA |
200 μF |
0.01 μF |
0.3% + 3 |
0.3% + 3 |
0.5% + 5 |
0.5% + 8 |
NA |
20 μF |
0.001 μF |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.5% + 5 |
5.0% + 10 |
2000 nF |
0.1 nF |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.7% + 10 |
200 nF |
0.01 nF |
0.2% + 3 |
0.2% + 3 |
0.2% + 3 |
0.5% + 3 |
0.7% + 10 |
20 nF |
0.001 nF |
0.5% + 5 |
0.5% + 5 |
0.2% + 3 |
0.5% + 3 |
0.7% + 10 |
2000 pF 1 |
0.1 pF |
0.5% + 10 |
0.5% + 10 |
0.5% + 5 |
0.5% + 3 |
2.0% + 10 |
200 pF 1 |
0.01 pF |
NA |
NA |
0.5% + 10 |
0.8% + 10 |
2.0% + 10 |
20 pF 1 |
0.001 pF |
NA |
NA |
NA |
1.0% + 20 |
2.5% + 10 |
This accuracy for the ranges of 20 pF~2000 pF is specified after Math Null which is used to substrate the stray capacitances for test leads. |
Notes:
a. The accuracy for the ceramic capacitor will be influenced depending on the dielectric constant (K) of the material used to make
the ceramic capacitor. For related influence factors, please refer to the Component dependency factors section in the Impedance
Measurement Handbook |
|
Accuracy = AL + Offset |
Range |
Resolution |
|
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
20 μH |
0.001 μH |
NA |
NA |
NA |
1.0% + 5 |
2.5% + 20 |
200 μH |
0.01μH |
NA |
NA |
1.0% + 5 |
0.7% + 3 |
2.5% + 20 |
2000 μH |
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 |
Range |
Resolution |
Accuracy (θe) |
Condition |
–180° ~180° |
0.1°/1° |
(AZ + Offset/Zx) x180/π |
D < 1 or Q > 1 |
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:
a. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless specified
b. The “AZ” and Offset are the accuracy specified at impedance
c. The “π” is approximately 3.14159 |
Range |
Resolution |
Accuracy (θe) |
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 |
Capacitance |
Cx |
AC |
Offset |
De |
88.88 μF |
8888 |
0.2% |
3 |
0.334% + 3 |
Notes:
1. Specifications are applicable to all models (U1731C, U1732C, and U1733C) unless specified
2. The “AZ, AL, AC” and Offset are the accuracy specified at Impedance, Inductance, and Capacitance, 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 |
|
|
Test signal level |
Test frequency |
Model |
Selection |
Level |
Accuracy |
Frequency |
Accuracy |
U1731C/U1732C/U1733C |
100 Hz |
0.74 Vrms |
0.05 Vrms |
100 Hz |
0.01% |
120 Hz |
0.74 Vrms |
0.05 Vrms |
120.481 Hz |
0.01% |
1 kHz |
0.74 Vrms |
0.05 Vrms |
1 kHz |
0.01% |
U1732C/1733C |
10 kHz |
0.70 Vrms |
0.05 Vrms |
10 kHz |
0.01% |
U1733C |
100 kHz |
0.70 Vrms |
0.05 Vrms |
100 kHz |
0.01% |
DCR |
+1.235 V |
0.05 V |
NA |
NA |
Range |
U1731C/U1732C/U1733C |
U1732C/U1733C |
U1733C |
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
DCR |
2 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
20 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
200 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
2000 Ω |
1 kΩ |
1 kΩ |
1 kΩ |
1 kΩ |
1 kΩ |
1 kΩ |
20 kΩ |
10 kΩ |
10 kΩ |
10 kΩ |
10 kΩ |
1 kΩ |
10 kΩ |
200 kΩ |
100 kΩ |
100 kΩ |
100 kΩ |
10 kΩ |
1 kΩ |
100 kΩ |
2000 kΩ |
100 kΩ |
100 kΩ |
100 kΩ |
10 kΩ |
NA |
100 kΩ |
20 MΩ |
100 kΩ |
100 kΩ |
100 kΩ |
100 kΩ |
NA |
100 kΩ |
200 MΩ |
100 kΩ |
100 kΩ |
100 kΩ |
NA |
NA |
100 kΩ |
|
Typical source impedance |
Range |
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
20 mF |
100 Ω |
100 Ω |
NA |
NA |
NA |
2000 μF |
100 Ω |
100 Ω |
100 Ω |
NA |
NA |
200 μF |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
NA |
20 μF |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
2000 nF |
1 kΩ |
1 kΩ |
100 Ω |
100 Ω |
100 Ω |
200 nF |
10 kΩ |
10 kΩ |
1 kΩ |
100 Ω |
100 Ω |
20 nF |
100 kΩ |
100 kΩ |
10 kΩ |
1 kΩ |
100 Ω |
2000 pF |
100 kΩ |
100 kΩ |
100 kΩ |
10 kΩ |
1 kΩ |
200 pF |
NA |
NA |
100 kΩ |
10 kΩ |
1 kΩ |
20 pF |
NA |
NA |
NA |
100 kΩ |
1 kΩ |
|
Typical source impedance |
Range |
|
100 Hz |
120 Hz |
1 kHz |
10 kHz |
100 kHz |
20 μH |
NA |
NA |
NA |
100 Ω |
100 Ω |
200 μH |
NA |
NA |
100 Ω |
100 Ω |
100 Ω |
2000 μH |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
20 mH |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
100 Ω |
200 mH |
100 Ω |
100 Ω |
100 Ω |
1 Ω |
1 Ω |
2000 mH |
100 Ω |
100 Ω |
1 kΩ |
10 kΩ |
1 kΩ |
20 H |
1 kΩ |
1 kΩ |
10 kΩ |
10 kΩ |
1 kΩ |
200 H |
10 kΩ |
10 kΩ |
100 kΩ |
100 kΩ |
NA |
2000 H |
100 kΩ |
100 kΩ |
100 kΩ |
NA |
NA |
General Specifications |
Measurements |
Z/L/C/R/D/Q/θ/ESR |
Z/L/C/R/D/Q/θ/ESR |
Z/L/C/R/D/Q/θ/ESR/DCR |
Display |
Primary display: Maximum display 19,999 counts
Secondary display: Maximum display 999 counts
Automatic polarity indication |
Test frequency (Accuracy =
± 0.1% of actual test frequency) |
100 Hz, 120 Hz, 1 kHz |
100 Hz, 120 Hz, 1 kHz, 10 kHz |
100 Hz, 120 Hz, 1 kHz, 10 kHz, 100 kHz |
Backlight |
No |
Yes |
Yes |
Test signal level |
Selection |
Test signal level |
Test frequency |
100 Hz |
0.74 Vrms |
100 Hz |
120 Hz |
0.74 Vrms |
120.481 Hz |
1 kHz |
0.74 Vrms |
1 kHz |
10 kHz 1 |
0.74 Vrms |
10 kHz |
100 kHz 2 |
0.74 Vrms |
100 kHz |
DCR 2 |
+1.235 V |
NA |
Tolerance mode |
1%, 5%, 10%, 20% |
Ranging mode |
Auto and manual |
Measurement rate |
1 time/second, nominal |
Response time |
Approximately 1 second/DUT (Device Under Test) |
Auto power-off |
~0-99 mins without operation |
Power supply |
Single standard 9 V battery (alkaline or carbon-zinc) or optional power adaptor |
Power consumption |
225 mVA maximum without backlight |
Input protection fuse |
Resettable over-current protection |
Battery life |
16 hours based on alkaline battery |
Low battery indicator |
[ ] will appear when voltage drops below ~7.2 V |
Operating temperature |
–10 to 55 °C, 0 to 80% R.H. |
Storage temperature |
–20 to 70 °C, 0 to 80% R.H. without battery |
Temperature coefficient |
0.1 × (specified accuracy)/°C (from –10 to 18 °C or 28 to 55 °C) |
Relative humidity |
Maximum 80% R.H. for temperature up to 30 °C decreasing linearly to 50% R.H. at 55 °C |
Weight |
337 grams with battery |
Dimensions (H x W x D) |
184 mm x 87 mm x 41 mm |
Safety and EMC Compliance |
In compliance with EN61010-1 (IEC61010-1:2001) for low voltage directive and Pollution Degree II
Environment. Susceptibility and Emissions (EMC): Commercial Limits per EN61326-1 |
Calibration |
One-year calibration cycle recommended |
Warranty |
– 3 years for main unit
– 3 months for standard shipped accessories |