Appendix A
Specifications for SCXI-1120D
©
National Instruments Corporation
A-7
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
