National Instruments NI 9219 User Manual
Page 28
NI 9219 Operating Instructions
28
ni.com
Input bias current .............................. <1 nA
INL.................................................... ±15 ppm
1
CMRR (f
in
= 60 Hz)..........................>100 dB
NMRR
Best 60 Hz rejection ................... 90 dB
2
at 60 Hz
Best 50 Hz rejection ................... 80 dB at 50 Hz
High resolution ........................... 65 dB at 50 Hz and 60 Hz
Excitation level for Half-Bridge and Full-Bridge modes
1
INL is ±140 ppm for Voltage mode with ±60 V or ±1 V range when using the Best
60 Hz rejection conversion time.
2
NMRR is 80 dB for Voltage mode with ±1 V range when using the Best 60 Hz
rejection conversion time.
Mode
Load Resistance (
Ω)
Excitation (V)
Half-Bridge
700
2.5
Half-Bridge
240
2.0
Full-Bridge
350
2.7
Full-Bridge
120
2.2