National Instruments NI USB-621x manual Index

Index

Symbols

+5 V power input, 3-3

+5 V power output, 3-2

+5 V power source, 3-2

.NET languages documentation, xvi

Numerics

100kHz Timebase, 12-2

20MHz Timebase, 12-1

80MHz Timebase, 12-1

A

A/D converter, 4-2

AC return path, creating, 11-3accessories

choosing for your device, 1-3acquisition

circular-buffered,4-10double-buffered,4-10

acquisitions hardware-timed,4-9on-demand,4-9software-timed,4-9

AI channels, sampling with AI Sample Clock and AI Convert Clock, B-2

AI Convert Clock signal, 4-16

AI Convert Clock Timebase signal, 4-20 AI data acquisition methods, 4-9

AI FIFO, 4-2

AI Hold Complete Event signal, 4-21 AI Pause Trigger signal, 4-23

AI Reference Trigger signal, 4-22 AI Sample Clock signal, 4-14

AI Sample Clock Timebase signal, 4-16 AI Start Trigger signal, 4-21

AI timing signals, 4-11 ai/ConvertClock, 4-16 ai/ConvertClockTimebase, 4-20 ai/HoldCompleteEvent, 4-21 ai/PauseTrigger, 4-23 ai/ReferenceTrigger, 4-22 ai/SampleClock, 4-14 ai/SampleClockTimebase, 4-16 ai/StartTrigger, 4-21

analog input, 4-1 charge injection, B-1 circuitry, 4-1 connecting signals, 5-1,6-1

connecting through I/O connector, 4-1 crosstalk when sampling multiple

channels, B-1

data acquisition methods, 4-9 differential, troubleshooting, B-1 getting started with applications in

software, 4-24

ghost voltages when sampling multiple channels, B-1

ground-reference settings, 4-2 MUX, 4-1

sampling channels with AI Sample Clock and AI Convert Clock, B-2

timing signals, 4-11 triggering, 4-10 troubleshooting, B-1

analog input data acquisitions, 4-9 analog input signals, 4-11

AI Convert Clock, 4-16

AI Convert Clock Timebase, 4-20 AI Hold Complete Event, 4-21 AI Pause Trigger, 4-23

AI Reference Trigger, 4-22 AI Sample Clock, 4-14

© National Instruments Corporation I-1 NI USB-621x User Manual