National Instruments Data Acquisition Device NI USB-621x - Page 179

Index
© National Instruments Corporation I-5 NI USB-621x User Manual
double-buffered acquisition, 4-9
drivers (NI resources), C-1
duplicate count prevention, 8-35
enabling in NI-DAQmx, 8-37
example, 8-35
prevention example, 8-36
E
edge counting, 8-2
buffered, 8-3
on-demand, 8-2
sample clock, 8-3
single point, 8-2
edge-separation measurement
buffered two-signal, 8-19
single two-signal, 8-18
enabling duplicate count prevention in
NI-DAQmx, 8-37
encoders, quadrature, 8-15
encoding
X1, 8-15
X2, 8-16
X4, 8-16
equivalent time sampling, 8-24
examples (NI resources), C-1
exporting timing output signals using PFI
terminals, 7-3
F
features, counter, 8-32
field wiring considerations, 4-10
filters
counter, 8-33
PFI, 7-4
floating signal sou rces
connecting, 4-25
description, 4-25
using in differential mode, 4-27
using in NRSE mode, 4-30
using in RSE mode, 4-31
when to use in differential mode, 4-25
when to use in NRSE mode, 4-26
when to use in RSE mode, 4-25
FREQ OUT signal, 8-29
frequency
division, 8-24
generation, 8-23
generator, 8-23
measurement, 8-9
Frequency Output signal, 8-29
fuse replacement (USB devices), 3-3
G
generations
analog output data, 5-2
buffered hardware-timed, 5-3
clock, 10-1
continuous pulse train, 8-22
frequency, 8-23
hardware-timed, 5-2
pulse for ETS, 8-24
pulse train, 8-22
retriggerable single pulse, 8-21
simple pulse, 8-20
single pulse, 8-20
single pulse with start trigger, 8-20
software-timed, 5-2
getting started, 1-1
AI applications in software, 4-22
AO applications in software, 5-9
DIO applications in software
USB-6210/6211/6215/6218, 6-4
USB-6212/6216, 6-7
ghost voltages when sampling multiple
channels, B-1
ground-reference
connections, checking, B-1
settings, 4-1, 4-3
analog input, 4-3