Appendix A Specifications for SCXI-1120D
© National Instruments Corporation A-7 SCXI-1120/D User Manual
Phase shift using TBX-1329 AC coupled
Input to output.................................< 0.5 ° between 5 Hz and 280 Hz
Channel to channel.......................... < 0.5 ° up to 5 kHz
THD ................................................< 0.1% at 7V
rms
f = 1 kHz,
G = 0.5
< 1.5% at 3 mV
rms
f = 1 kHz,
G = 1,000
Crosstalk (50 Ω load and source)...........80 dB at 1 kHz
Output selection time (with V step, all gains)
to ± 0.012% accuracy............................. 3 µs
Filter
Type .......................................................Second order low-pass RC filter
Cutoff frequency (–3 dB)....................... 4.5 kHz, 22.5 kHz
Stability
Recommended warm-up ........................30 min.
Offset drift RTI ...................................... ± (20 ± 220/gain) µV/°C
Gain drift................................................± 50 ppm/°C
Table A-3.
Switching Supply Noise (approximately at 100 kHz)
†
Gain Noise
0.5 174 µV
rms
1,000 4 µV
rms
†
Earth ground referenced input signal
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