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© National Instruments Corporation 11 NI 5441 Specifications
Spectral Characteristics (Continued)
Average Noise
Density
Path
Amplitude
Range
Average
Noise Density
Average Noise
Density at small
amplitudes is
limited by a
–148 dBm/Hz
noise floor.
V
pk-pk
dBm dBm/Hz
dBFS/
Hz
Direct 1 4.0 18 –142 –146.0
Low Gain 0.06 –20.4 9 –148 –127.6
Low Gain 0.1 –16.0 9 –148 –132.0
Low Gain 0.4 –4.0 13 –145 –141.0
Low Gain 1 4.0 18 –142 –146.0
Low Gain 2 10.0 35 –136 –146.0
High Gain 4 16.0 71 –130 –146.0
High Gain 12 25.6 213 –120 –145.6
Specification Value Comments
nV
Hz
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