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© National Instruments Corporation 5 NI PXI/PCI-5114 Specifications
Specification Value Comments
Spectral Characteristics
Spurious-Free
Dynamic Range
with Harmonics
(SFDR), Typical
Range (V
pk-pk
) 10 MHz,
–1 dBFS
input signal
Includes the
2
nd
through
the 5
th
harmonics
Measured
from DC to
125 MHz
20 MHz
bandwidth
limit filter off
All ranges except 0.04 0.04
58 dBc 58 dBc
Total Harmonic
Distortion
(THD), Typical
–58 dBc –58 dBc
Effective
Number of Bits
(ENOB),
Calculated*
7.2 6.2
Signal to Noise
and Distortion
(SINAD),
Typical
44 dB 38 dB
RMS Noise Range
(V
pk-pk
)
20 MHz
Filter On
20 MHz
Filter Off
50 Ω
terminator
connected
to input
All ranges
except 0.04
0.28% FS 0.28% FS
0.04 0.28% FS 0.45% FS
*
ENOB = log
2
(sinad) – ½log
2
(1.5) – log
2
(A/V)
where
sinad = the linear representation of SINAD
A = amplitude of the supplied sine wave during the test
V = (peak) full-scale range of the waveform recorder input
Refer to 1057-1994 IEEE Standard for Digitizing Waveform Recorders for information on equation derivation.