SC5 Signal Conversion Performance Measurements
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The following table shows typical spectral noise values for selected frequencies. Note: The measurement was
performed with 50 Hz line voltage frequency.
Frequency Spectral noise (nV/√Hz)
1 Hz 75
10 Hz 35
50 Hz < 60 (< 45)
100 Hz 22
150 Hz < 100 (< 90)
1 kHz 22
10 kHz 24
40 kHz 35
100 kHz 11
1 MHz 30
Table 10: SC5 output spectral noise density for different frequencies, including line frequency (50 Hz) and its second and
third harmonic, as well as sampling frequency. Values in brackets are measured using the SC5 inputs, which is a
measurement set-up less susceptible to hum pick-up.
Noise 0.1 Hz – 10 Hz
The low-frequency noise of the SC5 outputs is measured with the same set-up as described in the previous section.
The following settings were used for the measurement:
DMM
Measured output: AO1 Mode of operation: Digitizer, AC volts
Output amplitude: 0 V Range: 100 mV
Sample rate: 100 S/s
Resolution: 22 bit
The following graph shows a typical trace for the output noise in the 0.1 to 10 Hz range:
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