Operator`s manual

15 Signametrics
2.4.4 AC Median Value Measurement (SMU2064)
 Measures the mid-point between the positive and negative peaks of a repetitive waveform
 Used to determine the Threshold DAC setting for optimal frequency and timing measurements
ACV
Range
Lowest specified input
voltage (Vp-p)
Full Scale
reading
Resolution
Typical Accuracy 23C  5C One Year [1]
240 mV 0.08 V
0.95 V
1 mV
2.0% 17 mV
2.4 V 0.80 V
9.5 V
10 mV 3% ±160 mV
24 V 8 V
95.0 V
100 mV 3% ±1.4 V
240 V 80 V
350.0 V
1 V 3% ±12 V
[1] Median measurements require a repetitive signal with frequency range of 30 Hz to 30 KHz.
2.4.5 Average AC Voltage Measurement (2064)
 Measures the average AC voltage
 Frequency range 1Hz to 1kHz
Range Specified input
voltage [1]
Full Scale reading:
sine wave
Resolution
Typical Accuracy 23C  5C
One Year [2]
240 mV
240 mV
150.0 mV 10 µV
1.5%  60 µV
2.4 V
2.4 V
1.500 V 100 µV 1.2% ± 1 mV
24 V
24 V
15.00 V 1 mV 1% ± 15 mV
240 V
240 V
150.0 V 10 mV 1% ± 130 mV
330 V
330 V 200.0 V
10 mV 1% ± 150 mV
[1] Requires selection of a DC Voltage range, and entry of signal frequency. Signal is repetitive.
[2] Specified for a sine wave. More abrupt signals such as square wave, pulse, and triangle will
degrade the accuracy relative to frequency contents of waveform.
2.4.6 Low frequency RMS Voltage Measurement (2064)
 Measures the RMS value of a low frequency voltage
 Frequency range 0.2Hz to 66Hz
Range Specified input
voltage [1]
Full Scale reading:
sine wave
Resolution
Typical Accuracy 23C  5C
One Year [2]
240 mV
240 mV
240.00 mV 10 µV
0.3%  50 µV
2.4 V
2.4 V
2.4000 V 100 µV 0.2% ± 500 µV
24 V
24 V
24.000 V 1 mV 0.2% ± 5 mV
240 V
240 V
240.00 V 10 mV 0.2% ± 50 mV
330 V
330 V
330.00 V 10 mV 0.2% ± 70 mV
[1] Requires selection of a DC Voltage range, and entry of signal frequency. Signal is repetitive.
[2] Specified for a sine wave. More abrupt signals such as square wave, pulse, and triangle will
degrade the accuracy relative to frequency contents of waveform.
2.5 AC Current Measurement, True RMS
Input Characteristics
 Crest Factor 4 at Full Scale, increasing to 10 at Lowest Specified Current
 Burden Voltage 240mV max.
 Protected with 2.5 A Fast Blow fuse
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