National Instruments 3.21E+04 用户手册
Appendix A Specifications for AT-MIO-16E-1, AT-MIO-16E-2 and AT-MIO-64E-3
National Instruments Corporation
A-9
AT-MIO/AI E Series User Manual
Base clocks available
Counter/timers ............................ 20 MHz, 100 kHz
Frequency scalers........................ 10 MHz, 100 kHz
Base clock accuracy ..........................
±
0.01%
Max source frequency ....................... 20 MHz
Min source pulse duration ................. 10 ns in edge-detect mode
Min gate pulse duration ..................... 10 ns in edge-detect mode
Data transfers .................................... DMA, interrupts, programmed
I/O
DMA modes ...................................... Single transfer
Triggers
Analog Trigger
Source ............................................... ACH<0..63>, PFI0/TRIG1
Level .................................................
±
full-scale, internal;
±
10 V,
external
Slope ................................................. Positive or negative (software
selectable)
Resolution ......................................... 8 bits, 1 in 256
Hysteresis.......................................... Programmable
Bandwidth (-3 dB)............................. 1.5 MHz internal,
7 MHz external
External input (PFI0/TRIG1)
Impedance................................... 10 k
Ω
Coupling .................................... DC
Protection.................................... -0.5 to Vcc + 0.5 V when
configured as a digital signal
±
35 V when configured as an
analog trigger signal or disabled
±
35 V powered off