Operator`s manual

Signametrics 10
2.5 AC Current Measurement, True RMS
Input Characteristics
 Crest Factor 4 at Full Scale
 Number of built-in shunts Two
 Currents greater than 2.4A require external shunt
 Protected with 2.5A Fast blow fuse
2.5.1 AC Current True RMS Measurement
Range Full Scale 6 1/2 Digits Lowest Specified
Current
Maximum Burden
Voltage (RMS)
Resolution
2.4 mA 2.400000 mA
60 A
25mV 1 nA
24 mA 24.00000 mA
300 A
250mV 10 nA
240 mA 240.0000 mA 3 mA 55mV 100 nA
2.4 A 2.400000 A 30 mA 520mV 1 uA
Accuracy ± (% of reading + Amps)
Range Frequency [1] 24 hours
23C  1C
90 Days
23C  10C
One Year
23C  10C
10 Hz - 20 Hz
3.8 + 4 A 2.7 + 4 A 2.9 + 4 A
20 Hz - 47 Hz
0.9 + 4 A 0.9 + 4 A 1.0 + 4 A
47 Hz - 1 kHz
0.04 + 1.5 A 0.08 + 3 A 0.12 + 4 A
2.4 mA
1 kHz - 10 kHz
0.12 + 4 A 0.14 + 4 A 0.22 + 4 A
10 Hz - 20 Hz
1.8 + 30 A 2.6 + 30 A 2.8 + 30 A
20 Hz - 47 Hz
0.6 + 30 A 0.9 + 30 A 1.0 + 30 A
47 Hz - 1 kHz
0.07 + 10 A 0.15 + 20 A 0.16 + 30 A
24 mA
1 kHz - 10 kHz
0.21 + 30 A 0.3 + 40 A 0.4 + 40 A
10 Hz - 20 Hz
1.8 + 400 A 2.7 + 400 A 2.8 + 400 A
20 Hz - 47 Hz
0.6 + 400 A 0.9 + 400 A 1.0 + 400 A
47 Hz - 1 kHz
0.1 + 100 A 0.17 + 180 A 0.2 + 220 A
240 mA
1 kHz - 10 kHz
0.3 + 300 A 0.35 + 350 A 0.4 + 400 A
10 Hz - 20 Hz 1.8 + 4 mA 2.5 + 4.5 mA 2.7 + 5 mA
20 Hz - 47 Hz 0.66 + 4 mA 0.8 + 6 mA 0.9 + 6 mA
47 Hz - 1 kHz 0.3 + 3.8mA 0.33 + 3.8 mA 0.35 + 4 mA
2.4 A
1 kHz - 10 kHz 0.4 + 4mA 0.45 + 4.5 mA 0.5 + 5 mA
2.6 Diode Test Function
 Test Currents Five
 Current sources voltage compliance 4 V
Accuracy ± (% of reading + Volts) [1]
Range Full Scale
5-½ Digits
Resolution
One Year 23C  10C
0.1 A 0.022 + 15 V
1 A 0.018 + 12 V
10 A 0.015 + 10 V
100 A 0.014 + 8 V
1 mA
2.40000 V
10 V
0.014 + 8 V
[1] With measurement rate set to 2rps or lower rate