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Specifications Appendix A
DAQCard-700 User Manual A-2 © National Instruments Corporation
Dynamic Characteristics
Settling time ±0.024% accuracy
(±1 LSB) for full-scale step ............................................ 25 µs max at ±10 V, ±5 V
10 µs at ±2.5 V (RSE)
System noise........................................................................... 0.5 LSB rms at ±5 V range
Stability
Recommended warm-up time ................................................ 15 min
Onboard calibration reference
Level ............................................................................... 3.0 V (±0.2 mV)
Temperature coefficient .................................................. 60 ppm/°C max
Digital I/O
Number of channels ............................................................... 8 input and 8 output
Compatibility ......................................................................... TTL
Digital logic levels .................................................................
Level Min Max
Input low voltage 0 V 0.8 V
Input high voltage
2 V 5 V
Input low current
(V
in
= 0 V)
– -50 µA
Input high current
(V
in
= 5 V)
–1 µA
Output low voltage
(I
out
= 4 mA) – 0.4 V
Output high voltage
(I
out
= 4 mA) 3.7 V –
Timing I/O
Number of channels ............................................................... 3 counter/timers (1 dedicated to analog input)
Resolution............................................................................... 16 bits
Compatibility ......................................................................... TTL, gate and source pulled high with 100 kΩ resistors
Base clocks available ............................................................. 1 MHz
Base clock accuracy ............................................................... ±0.01%
Max source frequency ............................................................ 10 MHz
Min source pulse duration...................................................... 50 ns
Min gate pulse duration.......................................................... 50 ns
Data transfers ......................................................................... Programmed I/O
Bus Interface
Type ....................................................................................... slave