RIGOL DM3068 - Manual (Page 159)

Chapter 6 Specifications RIGOL
User’s Guide for DM3068
6-13
Capacitance Characteristics
Accuracy Specifications: ± (% of reading + % of range) [1][2]
Function Range [2] Test Current 1Year
T
CAL
℃ ±5℃
Temperature Coefficient
0℃ to (T
CAL
℃ -5℃)
(T
CAL
℃ +5℃) to 50℃
Capacitance 2.000 nF 200 nA 2 + 2.5 0.05+0.05
20.00 nF 2 uA 1 + 0.3 0.05+0.01
200.0 nF 10 uA 1 + 0.3 0.01+0.01
2.000 uF 100 uA 1 + 0.3 0.01+0.01
20.00 uF 1 mA 1 + 0.3 0.01+0.01
200.0 uF 1 mA 1 + 0.3 0.01+0.01
2.000 mF 1 mA 1 + 0.3 0.01+0.01
20.00 mF 1 mA 1 + 0.3 0.01+0.01
100.0 mF 1 mA 3 + 0.2 0.05+0.02
[1] Specifications are for 90 minutes warm–up and REL operation. Additional errors may be caused by non–film capacitors.
[2] Specifications are for 1% to 110% of range on 2 nF range and 10% to 110% of range on all other ranges.
Measuring Characteristics
Capacitance Measurement
Measurement Method
Apply constant current into the capacitance, and measure the voltage changing rate.
Connection Type 2-wire
Measurement Considerations
Since small capacitance measurements are susceptible to error caused by external noise, shielding inputs from external noise pickup is critical for minimizing
measurement errors.