National Instruments NI 5412 用户手册

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© National Instruments Corporation
7
NI 5412 Specifications
Sample Clock
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
Low-Gain
2
10
45
–134
–144
High-
Gain
12
25.6
251
–119
–145
Table 2.  
Specification
Value
Comments
Sources
1. Internal, Divide-by-N (N 
≥ 1)
2. Internal, DDS-based, High-Resolution
3. External, CLK IN (SMB front panel connector)
4. NI PXI-5412: External, PXI Star trigger 
(backplane connector)
5. NI PXI-5412: External, PXI_Trig<0..7> 
(backplane connector)
NI PCI-5412: External, RTSI<0..7>
Refer to the 
section for more 
information 
about Internal 
Clock Sources.
Table 1.  (Continued)
Specification
Value
Comments
nV
Hz
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