National Instruments PCI-4452 - Manual (Page 74)

Appendix A Specifications
© National Instruments Corporation A-3 PCI-4451/4452 User Manual
Amplifier Characteristics
Input impedance ..................................... 1 M
Ω
in parallel with 50 pF
(+ and
−
each to AIGND)
Frequency response
Gain
0, +10, +20, +30, +40 dB................ ±0.1 dB, 0 to 95 kHz, 204.8 kS/s,
DC coupling
−
20,
−
10, +50, +60 dB .................... ±1 dB, 0 to 95 kHz, ±0.1 dB,
0 to 20 kHz
−
3 dB bandwidth .................................... 0.493 f
s
Input coupling ........................................ AC or DC, software-selectable
AC
−
3 dB cutoff frequency ............ 3.4 Hz
Common-mode range
Gain
≥
0 dB ...................................... both + and
−
should remain within
±12 V of AIGND
Gain < 0 dB..................................... both + and
−
should remain within
±42.4 V of AIGND
Overvoltage protection........................... ±42.4 V, powered on or off
(±400 V guaranteed by design,
but not tested or certified to
operate beyond ±42.4 V)
Inputs protected............................... ACH0, ACH1, ACH2, ACH3
Common mode rejection ratio
(f
in
< 1 kHz)............................................ 90 dB, Gain
≥
0 dB
60 dB, Gain < 0 dB
User.book Page 3 Tuesday, April 14, 1998 10:20 AM