Rigol DM3068 Guide de l'utilisateur Page 159

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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 warmup and REL operation. Additional errors may be caused by nonfilm 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.
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