National Instruments NI USB-9219 User Manual
Page 20
NI USB-9219 User Guide and Specifications
20
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Input noise in ppm of Range
rms
Input bias current ....................................<1 nA
INL..........................................................±15 ppm
CMRR (f
in
= 60 Hz)................................>100 dB
NMRR
Best 60 Hz Rejection .......................90 dB at 60 Hz
Best 50 Hz Rejection .......................80 dB at 50 Hz
High Resolution...............................65 dB at 50 Hz and 60 Hz
Mode, Range
Conversion Time
High
Speed
Best
60 Hz
Rejection
Best
50 Hz
Rejection
High
Resolution
Voltage, ±60 V
7.6
1.3
1.3
0.5
Voltage, ±15 V
10.8
1.9
1.9
0.7
Voltage, ±4 V
10.8
2.7
2.7
1.3
Voltage, ±1 V
7.6
1.3
1.3
0.5
Voltage/Thermocouple, 125 mV
10.8
1.9
1.9
1.0
Current, ±25 mA
10.8
1.9
1.9
1.0
4-Wire and 2-Wire Resistance, 10 k
Ω
4.1
1.3
0.8
0.3
4-Wire and 2-Wire Resistance, 1 k
Ω
7.1
1.8
1.2
0.7
4-Wire and 3-Wire RTD, Pt 1,000
7.6
1.7
1.1
0.4
4-Wire and 3-Wire RTD, Pt 100
10.8
1.9
1.9
0.9
Quarter-Bridge, 350
Ω
5.4
1.0
1.0
0.7
Quarter-Bridge, 120
Ω
5.4
1.0
1.0
0.7
Half-Bridge,
±
500 mV/V
3.8
0.5
0.5
0.2
Full-Bridge,
±
62.5 mV/V
5.4
1.0
1.0
0.8
Full-Bridge,
±
7.8 mV/V
30
4.7
4.7
2.3