National Instruments NI USB-621x manual 173

F

features, counter, 9-32

field wiring considerations, 4-11filters

counter, 9-33 PFI, 10-4

floating signal sources connecting, 5-3 description, 5-3

using in differential mode, 5-5 using in NRSE mode, 5-8 using in RSE mode, 5-9

when to use in differential mode, 5-3 when to use in NRSE mode, 5-4 when to use in RSE mode, 5-3

FREQ OUT signal, 9-29frequency

division, 9-24 generation, 9-23 generator, 9-23

frequency measurement, 9-10 Frequency Output signal, 9-29

G

generations

analog output data, 7-2 buffered hardware-timed,7-3 clock, 12-1

continuous pulse train, 9-22 frequency, 9-23hardware-timed,7-2 pulse for ETS, 9-24

pulse train, 9-22

retriggerable single pulse, 9-21 simple pulse, 9-20

single pulse, 9-20

single pulse with start trigger, 9-20software-timed,7-2

getting started, 1-2

Index

AI applications in software, 4-24 AO applications in software, 7-9 DIO applications in software, 8-4 ghost voltages when sampling multiple

channels, B-1

ground-reference connections, checking, B-1ground-reference settings, 4-2,4-3

analog input, 4-3ground-referenced signal sources

connecting, 5-9 description, 5-9

using in differential mode, 5-12 using in NRSE mode, 5-13

when to use in differential mode, 5-10 when to use in NRSE mode, 5-10 when to use in RSE mode, 5-11

H

hardware, 1-3,2-1hardware-timed acquisitions, 4-9hardware-timed generations, 7-2 help, technical support, C-1

I

I/O connector, 3-1USB-6210 pinout, A-1USB-6211 pinout, A-4USB-6215 pinout, A-4USB-6218 pinout, A-7

I/O protection, 8-2,10-6input signals

using PFI terminals as, 10-2

insertion of grounded channels between signal channels, 4-7

installation hardware, 1-3NI-DAQ,1-2 other software, 1-2

instrument drivers (NI resources), C-1

© National Instruments Corporation I-5 NI USB-621x User Manual