Index
© National Instruments Corporation I-7 NI USB-621x User Manual
K
KnowledgeBase, C-1
L
LabVIEW
documentation, xv
Mobile Module 8.x, xiv
Touch Panel Module 8.x, xiv
LabWindows/CVI documentation, xvi
LED, 3-6
Linux, xiv
low impedance sources, 4-6
M
Mac OS X, xiv
Measurement Studio documentation, xvi
measurements
buffered period, 8-7
buffered pulse-width, 8-5
buffered semi-period, 8-9
buffered two-signal edge-separation, 8-20
choosing frequency, 8-14
frequency, 8-10
period, 8-6
position, 8-15
pulse-width, 8-4
semi-period, 8-8
single period, 8-6
single pulse-width, 8-4
single semi-period, 8-8
single two-signal edge-separation, 8-20
two-signal edge-separation, 8-19
using quadrature encoders, 8-16
using two pulse encoders, 8-18
measuring
high frequency with two counters, 8-12
large range of frequencies using two
counters, 8-13
low frequency with one counter, 8-10
averaged, 8-11
methods, data transfer, 11-1
minimizing
glitches on the output signal, 5-2
output signal glitches, B-3
voltage step between adjacent
channels, 4-7
mounting
DIN rail, 1-6
panel, 1-7
multichannel scanning considerations, 4-5
MUX, 4-1
N
National Instruments support and
services, C-1
.NET languages documentation, xvii
NI support and services, C-1
NI-DAQmx
default counter terminals, 8-32
documentation, xiv
device documentation browser, xviii
enabling duplicate count prevention, 8-39
NI-DAQmx Base documentation, xiv
NI-PGIA, 4-2
non-referenced single-ended connections
using with floating signal sources, 4-30
using with ground-referenced signal
sources, 4-35
when to use with floating signal
sources, 4-26
when to use with ground-referenced
signal sources, 4-32
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