SC5 Signal Conversion Performance Measurements
68
Fast analog output performance measurements
All measurements of this section were performed with the same measurement set-up as described in the analog
outputs performance section above.
Spectral noise
The noise spectrum of the fast analog output is measured with the output connected to a battery-powered Stanford
Research Systems SR560 low-noise differential preamplifier set to gain 1000, and the spectrum is recorded using a
National Instruments 4071 PXI digital multimeter operated in digitizer mode, or a Nanonis OC4 (1.25 MHz
spectrum). The pictures below show the noise spectrum for the range of 1 kHz (0 V output), as well as for the
frequency range up to 1.25 MHz and below 50 Hz.
Figure 50: Spectral noise of the fast analog output up to 1 kHz for 0 V output.
Figure 51: Spectral noise of the fast analog output up to 1.25 MHz (left) and 50 Hz (right) at 0 V output
0 100 200 300 400 500 600 700 800 900 1000
Frequency [Hz]
Spectral noise [nV/ Hz]
1000
100
10
Output range: ±10 V
Output voltage: 0 V
0 200 400 600 800 1000 1200
Frequency [kHz]
Spectral noise [nV/ Hz]
100
10
Output range: ±10 V
Output voltage: 0 V
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