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Appendix A
Specifications
A-6
©
National Instruments Corporation
ADC resolution .................................. 24 bits, no missing codes
Calibration cycle ................................ One year
Reading rates
Input coupling .................................... DC
Maximum working voltage
( common mode)
Range > 2.5 V ............................. Each input should remain
within ±15 V of ground
Range
≤
2.5 V .............................. Each input should remain
within ±2.5 V of ground
Over-voltage protection
(ACH<0..8/15>, IEX±) ................ ±42 V powered on,
±17 V powered off
Data transfers ..................................... Interrupts, programmed I/O
Warm-up time .................................... 30 minutes
Amplifier Characteristics
Input impedance
Normal powered on ..................... >1 G
Ω
in parallel with 0.39
µ
F
Powered off ................................. 10 k
Ω
Overload...................................... 10 k
Ω
Mode
Reading Rate
(readings/s)
Power-Line
Noise Rejection
Single channel
10
50
60
10
50
60
Multiple channel
acquisition
2.8
1.4*
10
8.8
2.1*
50
9.7
2.1*
60
* Resistance ranges
≥
50 k
Ω