Operator`s manual

Signametrics 10
2.0 Specifications
The following specifications are based on both, verification of large number of units as well as
mathematical evaluation. They should be considered under the environment specified.
It is important to note that a DMM specified range is expressed as a numeric value indicating the highest
absolute voltage that can be measured. The lowest value that can be detected is expressed by the
corresponding resolution for the range.
2.1 DC Voltage Measurement
Input Characteristics
• Input Resistance 240 mV, 2.4 V Ranges: >10 GΩ, with typical leakage of 50pA
• Input Resistance 24 V, 240 V, 330V Ranges: 10.00 MΩ
Accuracy ± (% of reading + Volts) [1]
Range Full Scale
7-½ Digits
Resolution 24 hours
23°C ± 1°C
90 Days
23°C ± 5°C
One Year 23°C
± 5°C
240 mV 240.00000 mV
10 ηV 0.003 + 1 µV 0.004 + 1.5 µV 0.005 + 2 µV
2.4 V 2.4000000 V
100 ηV 0.002 + 3 µV 0.0025 + 5 µV 0.003 + 10 µV
24 V 24.000000 V
1 µV 0.003 + 150 µV 0.004 + 250 µV 0.005 + 300 µV
240 V 240.00000 V
10 µV
0.004 + 200 µV 0.005 + 300 µV
0.006 + 0.5 mV
330 V
330.00000 V
10 µV
0.005 + 250 µV 0.01+ 400 µV
0.015 + 0.7 mV
[1] With Aperture set to  0.5 Sec, and within one hour from Self Calibration (S-Cal).
For resolution at smaller Apertures, see the following table. Use this table for DC Volts, DC current
and Resistance measurements.
Measurement Aperture
SM2060, SM2064
Maximum reading
rate
Resolution
0.5 s < Aperture 2 / second 7-1/2 digits 25 bits
10 ms < Aperture 100 / second 6-1/2 digits 22 bits
625µs < Aperture
1200 / second 5-1/2 digits 18 bits
2.5us < Aperture [2] 20,000 / second [2] 4-1/2 digits 14 bits
[2] Available only with the SM2064.
DCV Noise Rejection Normal Mode Rejection, at 50, 60, or 400 Hz ± 0.5%, is better than 95 dB
for apertures of 0.160s and higher. Common Mode Rejection (with 1 kΩ lead imbalance) is better
than 120 dB for these conditions.
2.2 DC Current Measurement
Input Characteristics
• Number of shunts Five in SM2064, two in the SM2060
• Protected with 2.5A Fast blow fuse
Accuracy ± (% of reading + Amps) [1]
Range Full Scale
6-½ Digits
Resolution Max Burden
Voltage
24 hours
23°C ± 5°C
90 Days
23°C ± 5°C
One Year 23°C
± 5°C
240 ηA [2] 240.0000 ηA
0.1 pA
100 µV
0.07 + 40pA 0.1 + 45pA 0.17 + 60pA
2.4 µA [2] 2.400000 µA
1 pA
100 µV
0.05 + 70pA 0.08 + 90pA 0.21 + 150pA
24 µA [2] 24.00000 µA
10 pA
100 µV
0.05 + 400pA 0.08 + 600pA 0.13 + 0.8nA
240 µA [2] 240.000 µA 10 ηA
2.5mV
0.052 + 200 ηA 0.07 + 300 ηA 0.1 + 400 ηA
2.4 mA 2.40000 mA
10 ηA
25mV
0.05 + 300 ηA 0.06 + 400 ηA 0.07 + 550 ηA
24 mA 24.0000 mA
100 ηA
250mV
0.05 + 350 ηA 0.065 + 450 ηA 0.08 + 550 ηA
240 mA 240.000 mA
1 µA
55mV
0.05 + 50 µA 0.055 + 60 µA 0.065 + 80 µA
2.4 A 2.40000 A
10 µA
520mV
0.3 + 60 µA 0.4 + 70 µA 0.45 + 90 µA
[1] With Aperture set to  0.96 Sec, and within one hour from Zero (Relative control).
[2] Available only with the SM2064.