Operator`s manual

Signametrics 18
Range Input Typical Measurement
Time [1]
Typical Measurement
speed (rps) [1]
1,200 pF 5% of Scale
19.5 ms 51.3
1,200 pF Full Scale
52.3 ms 19.1
12 F
5% of Scale
70.0 ms 14.3
12 F
Full Scale
118ms 8.5
120 F
5% of Scale
8.9 ms 112.4
120 F
Full Scale
127 ms 7.9
1.2 F
5% of Scale
15.6 ms 64.1
1.2 F
Full Scale
175 ms 5.7
12 F
5% of Scale
14.1 ms 70.9
12 F
Full Scale
480 ms 2.1
120 F
5% of Scale
17.3 ms 57.8
120 F
Full Scale
50.3 ms 19.9
1.2 mF 5% of Scale
52.6 ms 19.0
1.2 mF Full Scale
151.5 ms 6.6
12 mF 5% of Scale
52.8 ms 18.9
12 mF Full Scale
170 ms 5.9
[1] This time depends on the value measured capacitance. The SMU2060 is about 10 times slower than the
SMU2064.
2.9.3 Capacitance, In-Circuit Method (SMU2064)
 Method Variable frequency AC
 Adjustable Peak Voltages Stimulus 100mV to 5.0V
 Parallel Load Resistance as low as 100
Accuracy ± (% of reading + Farads) [1]
Range Full Scale
3-½ Digits
Resolution One Year
23C  5C [2]
24 F 23.99 F
10 pF 5 ± 200 pF
240 F 239.9 F
100 pF
5 ± 1 F
2.4 F 2.399 F
1000 pF
3 ± 5 F
24 F 23.99 F 10 F 3 ± 50 F
240 F 239.9 F 100 F 5 ± 500 F
2.4 mF 2.399 mF
1 F 6 ± 5 F
[1] Within one hour of AC Caps Open Cal operation, and relative correction.
[2] Specified for values higher than 5% of the selected range with Aperture > 0.2s
2.9.4 Inductance Measurement (SMU2064)
Accuracy ± (% of reading + inductance) [1]
Range Test frequency Full Scale
4 ½ Digits
Resolution
Accuracy 23C  5C
One Year [2]
33 H
100 kHz
33.000 H 1 H 3.0% + 500 H
330 H
50 kHz
330.00 H 10 H 2.0% + 3 H
3.3 mH 4 kHz 3.3000 mH
100 H 1.5% + 25 H
33 mH 1.5 kHz 33.000 mH
1 H 1.5% + 200 H
330 mH 1 kHz 330.00 mH
10 H
2.5 + 3 mH
3.3 H 100 Hz 3.3000 H
100 H
3 + 35 mH
[1] Within one hour of Zero, and Open Terminal Calibration.
[2] Accuracy is specified for values greater than 5% of the selected range.