National Instruments NI 6120 用户手册

Base clock accuracy................................±0.01%

Max source frequency.............................20 MHz

Min source pulse duration  .....................10 ns, edge-detect mode

Min gate pulse duration  .........................10 ns, edge-detect mode

Data transfers ..........................................DMA, interrupts, 

programmed I/O

DMA modes ...........................................Scatter-gather

NI 6115/6120 source ..............................All analog input channels, 

external trigger (PFI0/TRIG1)

Level .......................................................± full-scale, internal; 

±10 V, external

Slope .......................................................Positive or negative 

(software selectable)

Resolution

NI 6115............................................8 bits, 1 in 256

NI 6120............................................12 bits, 1 in 4,096

Hysteresis................................................Programmable

Bandwidth ..............................................(–3 dB) 5 MHz internal/external

External input (PFI0/TRIG1)

Impedance........................................10 k

Ω

Coupling ..........................................AC/DC

Protection.........................................–0.5 V to (V

CC

 + 0.5) V when 

configured as a digital signal, 
±35 V when configured as an 
analog trigger signal or disabled, 
±35 V powered off