9
Spectral Characteristics – PXI-69846
Specification
Input Range
±1 V
±0�2 V
Signal to Noise and Distortion (SINAD), typical
76.06 dBc
71.97 dBc
Signal-to-Noise Ratio (SNR), typical
76.17 dBc
71.98 dBc
Total Harmonic Distortion (THD), typical
-90.65 dBc
-95.78 dBc
Spurious Free Dynamic Range (SFDR), typical
91.62 dBc
96.15 dBc
Effective Number of Bit (ENOB), typical
12.34-Bit
11.66-Bit
Test Conditions: Input signal frequency is 0.998 MHz. Digitizer sampling rate at 40 MHz
with 50 Ω input impedance. Calculated with 64 K-point data.
Note that these dynamic parameters may vary from one unit to another, with input
frequency and with the full scale input range selected.
Table 1-7: Spectral Characteristics – PCI/PXI-69846
PXI-69846, +/-0.2V, S-Rate = 40MS/s, Input Signal = 0.998 MHz @ -0.9758 dBFs
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
x 10
7
-120
-100
-80
-60
-40
-20
0
Frequency (Hz)
M
agn
itude
(d
B)
PXI-9846, +/-0.2V, S-Rate = 40MS/s, Input Signal = 0.998 MHz @ -0.9758 dBFs
Figure 1-8: PXI-69846 FFT with ±0.2 V Input Range
