User Guide

NI cDAQ-9172 User Guide and Specifications 78 ni.com

AO waveform modes..............................Non-periodic waveform,

periodic waveform regeneration

mode from onboard memory,

periodic waveform regeneration

from host buffer including

dynamic update

Digital Waveform Characteristics (Slots 1 through 4 Only)

Waveform acquisition (DI)

FIFO........................................................2,047 samples

Waveform generation (DO)

FIFO........................................................2,047 samples

Digital input sample clock frequency

Streaming to application

memory............................................0 to 8 MHz, system dependent

Finite................................................0 to 10 MHz

Digital output sample clock frequency

Streaming from application

memory............................................0 to 8 MHz, system dependent

Regenerate from FIFO.....................0 to 10 MHz

Finite................................................0 to 10 MHz

Digital output or digital input

sample clock source................................Any PFI, analog sample or

convert clock, analog output

sample clock, Ctr n Internal

Output, and many other sources

PFI Characteristics (Slots 5 and 6 Only)

Functionality...........................................Static digital input, static digital

output, timing input, and timing

output

Timing output sources ............................Many analog input, analog

output, counter, digital input, and

digital output timing signals

Requires correlated digital I/O modules installed on the appropriate slot(s).