SC5 Signal Conversion
Performance Measurements
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44
Performance Measurements
Analog inputs noise performance measurements
Spectral noise
The noise spectrum of the analog inputs is measured with the inputs connected to GND, using the internal switch.
All measurements are for AI1. The pictures below show the noise spectrum for the range of 1 kHz, as well as the full
sampling range (500 kHz) and the frequency range (below 60 Hz). The FFTs have 20 000 points.
Figure 22: Spectral noise of the analog inputs up to a frequency of 1 kHz.
Figure 23: Spectral noise of the analog inputs showing the full sampling range (left), and the low frequency range below 60
Hz (right). The analog bandwidth is 100 kHz, as can be seen from the decrease in noise around that frequency in the left
plot.
0
100
200
300
400
500
600
700
800
900
1000
Frequency [Hz]
10000
1000
100
Input range: ±10 V
Oversampling: 512x
S
pe
ct
ra
ln
oi
se
[n
V
/
H
z]
0
10
20
30
40
50
60
Frequency [Hz]
S
pe
ct
ra
ln
oi
se
[
μ
V
/
H
z]
100
10
1
0.1
Input range: ±10 V
Oversampling: 8192x
0
50
100
150
200
250
300
350
400
450
500
Frequency [kHz]
Sp
ec
tra
ln
oi
se
[n
V
/
H
z]
1000
100
Input range: ±10 V
Oversampling: 1x
Summary of Contents for Nanonis SC5
Page 1: ...Signal Conversion SC5 User Manual November 2016 R6860...
Page 2: ......
Page 5: ...SC5 Signal Conversion Conventions 5...
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Page 75: ...SC5 Signal Conversion Legal Information 75 Declaration of Conformity...
