User guide

10 Introduction
Spectral Characteristics – PXI-9826
Figure 1-6: PXI-9826 FFT with ±0.2 V Input Range
Specification Input Range
±1 V ±0.2 V
Signal to Noise and Distortion (SINAD), typical 78.63 dBc 74.44 dBc
Signal-to-Noise Ratio (SNR), typical 79.95 dBc 74.48 dBc
Total Harmonic Distortion (THD), typical -88.29 dBc -93.52 dBc
Spurious Free Dynamic Range (SFDR), typical 88.88dBc 95.52 dBc
Effective Number of Bit (ENOB), typical 12.77-Bit 12.07-Bit
Test Conditions: Input signal frequency is 0.998 MHz. Digitizer sampling
rate at 20 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 1-6: Spectral Characteristics – PXI-9826
0 1 2 3 4 5 6 7 8 9 10
x 10
6
-1 20
-1 00
-80
-60
-40
-20
0
Frequency (Hz)
Magnitude (dB)
PX -982 6, +/-0 .2 V, S- R ate = 2 0MS/s, I nput Signal = 0.9 9 8 MHz @ - 0. 8754 dB Fs