National Instruments NI USB-621x User Manual
Page 173

Index
© National Instruments Corporation
I-5
F
features, counter, 9-32
field wiring considerations, 4-11
filters
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, 9-29
frequency
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, 9-23
hardware-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, 9-20
software-timed, 7-2
AI applications in software, 4-24
AO applications in software, 7-9
DIO applications in software, 8-4
ghost voltages when sampling multiple
ground-reference connections, checking, B-1
ground-reference settings, 4-2, 4-3
ground-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, 2-1
hardware-timed acquisitions, 4-9
hardware-timed generations, 7-2
help, technical support, C-1
I
USB-6210 pinout, A-1
USB-6211 pinout, A-4
USB-6215 pinout, A-4
USB-6218 pinout, A-7
I/O protection, 8-2, 10-6
input signals
insertion of grounded channels between signal
installation