National Instruments NI 7831R User Manual download pdf (Page 49)

Appendix A Specifications

Digital logic levels

Maximum output current

max

(source)..................................... 5.0 mA

max

(sink) ........................................ 5.0 mA

Input leakage current.............................. ±10 µA

Power-on state........................................ Programmable, by line

Data transfers ......................................... Interrupts, programmed I/O

Protection

Input ................................................ –0.5 to 7.0 V

Output ............................................. Short-circuit (up to eight lines

may be shorted at a time)

Reconfigurable FPGA

Number of logic slices ........................... 5,120

Equivalent number of logic cells .... 11,520

Available embedded RAM..................... 81,920 bytes

Timebase ................................................ 40, 80, 120, 160, or 200 MHz

Timebase reference sources

NI PCI-7831R ................................. Onboard clock only

NI PXI-7831R................................. Onboard clock, phase-locked to

PXI 10 MHz clock

Timebase accuracy

Onboard clock................................. ±100 ppm, 250 ps jitter

Level Min Max

Input low voltage (V

)

Input high voltage (V

)

0.0 V

2.0 V

0.8 V

5.5 V

Output low voltage (V

where I

OUT

= –I

max

(sink)

Output high voltage (V

where I

OUT

= I

max

(source)

—

2.4 V

0.4 V

—

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National Instruments NI 7831R User Manual Page 49

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