National Instruments Data Acquisition Device NI USB-621x User Manual page 176

Index
AI Reference Trigger, 4-21
AI Sample Clock, 4-14
AI Sample Clock Timebase, 4-15
AI Start Trigger, 4-20
analog output, 5-1
circuitry, 5-1
connecting signals, 5-4
data generation methods, 5-2
fundamentals, 5-1
getting started with applications in
software, 5-9
glitches on the output signal, 5-2
range, 5-2
timing signals, 5-4
trigger signals, 5-3
triggering, 5-3
troubleshooting, B-3
analog output signals, 5-4
AO Pause Trigger, 5-6
AO Sample Clock, 5-7
AO Sample Clock Timebase, 5-8
AO Start Trigger, 5-5
analog-to-digital converter, 4-2
ANSI C documentation, xvii
AO FIFO, 5-1
AO Pause Trigger signal, 5-6
AO Sample Clock, 5-2
AO Sample Clock signal, 5-7
AO Sample Clock Timebase signal, 5-8
AO Start Trigger signal, 5-5
ao/PauseTrigger, 5-6
ao/SampleClock, 5-7
ao/StartTrigger, 5-5
applications
counter input, 8-2
counter output, 8-20
edge counting, 8-2
applying rubber feet, 1-4
arm start trigger, 8-31
NI USB-621x User Manual
B
board mounting, 1-5
buffered
edge counting, 8-3
hardware-timed acquisitions, 4-9
hardware-timed generations, 5-3
period measurement, 8-7
pulse-width measurement, 8-5
semi-period measurement, 8-8
two-signal edge-separation
measurement, 8-19
bus interface, 11-1
C
cables, 2-4
custom, 2-4
USB-6212 Mass Termination, A-10
USB-6212/6216 Mass Termination, A-10
USB-6216 Mass Termination, A-10
calibration, 2-2
circuitry, 2-2
calibration certificate (NI resources), C-2
cascading counters, 8-33
changing data transfer methods
between USB Signal Stream and
programmed I/O, 11-2
channel scanning order, 4-6
channel Z behavior, 8-16
channels, sampling with AI Sample Clock and
AI Convert Clock, B-2
charge injection, B-1
choosing frequency measurement, 8-13
circular-buffered acquisition, 4-9
clock
generation, 10-1
sample, 8-32
combicon, 2-4
common-mode noise, 9-3
configuring AI ground-reference settings in
software, 4-5
I-2 ni.com