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Appendix A
Specifications
Timing I/O
DAQCard-1200 User Manual
Digital logic levels
Level
Input low voltage
Input high voltage
Output low voltage
(I
= 2.5 mA)
out
Output high voltage
= –40 µA)
(I
out
(I
= –2.5 mA)
out
Output leakage current
0 ≤ V
≤ V
out
cc
Protection................................................–0.5 to 5.5 V powered on,
Handshaking ...........................................3 wire, 2 port
Data transfers ..........................................Interrupts, programmed I/O
Number of channels................................3 counters/timers
Digital logic levels
Level
Input low voltage
Input high voltage
Output low voltage
(I
= 4 mA)
out
Output high voltage
(I
= –1 mA)
out
Min
–0.3 V
2.2 V
—
4.2 V
3.7 V
–10 µA
±0.5 V powered off
Min
–0.3 V
2.2 V
—
3.7 V
A-6
Max
0.8 V
5.3 V
0.4 V
—
—
10 µA
Max
0.8 V
5.3 V
0.45 V
—
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