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Lab-PC+ User Manual Index-12 © National Instruments Corporation
PRETRIG bit
controlled acquisition mode
posttrigger mode, E-12
pretrigger mode, E-14
data acquisition timing, 3-21
description, D-10
multiple A/D conversions using EXTTRIG
signal, E-11
pretrigger data acquisition timing
(figure), 3-23
pretrigger mode
controlled acquisition mode programming,
E-14 to E-16
freerun acquisition mode
programming, E-17
termination of multiple A/D conversions
using EXTTRIG signal, E-11
programmable gain amplifier, 4-5
programming
A/D interrupt programming, E-19 to E-20
analog input circuitry
A/D FIFO output binary modes, E-4
clearing analog circuitry, E-5
input voltage versus A/D conversion
values (table)
bipolar input mode, E-4
unipolar input mode, E-4
programming sequence, E-3 to E-4
analog output circuitry, E-20 to E-22
digital I/O circuitry, E-23 to E-24
control-word format
control-word flag set to 0 (figure), E-24
control-word flag set to 1 (figure), E-24
Mode 0 operation, E-25 to E-26
control words, E-25 to E-26
programming examples, E-26
Mode 1 input, E-27 to E-28
control words, E-27
Port C pin assignments, E-28
Port C status-word bit definitions, E-28
programming example, E-29
Mode 1 output, E-29 to E-31
control words, E-29
Port C pin assignments, E-30
Port C status-word bit definitions, E-30
programming example, E-31
Mode 2 operation, E-31 to E-34
control words, E-31 to E-32
Port C pin assignments, E-33
Port C status-word bit definitions, E-32
programming example, E-33
single bit set/reset control words, E-33
single bit set/reset feature, E-34
DMA operation, E-20
initializing Lab-PC+, E-1 to E-2
interrupt programming for analog output
circuitry, E-22 to E-23
multiple A/D conversions
channel scanning, E-17
controlled acquisition mode
overview, E-5
programming steps, E-6 to E-8
external timing, E-11 to E-17
controlled acquisition
mode, E-12 to E-16
freerun acquisition mode, E-16 to E-17
using EXTCONV* signal, E-12
using EXTTRIG signal, E-11
freerun acquisition mode
overview, E-5
programming steps, E-8 to E-10
interval scanning, E-17 to E-18
single input channel, E-5 to E-10
controlled acquisition mode, E-6 to E-9
freerun acquisition mode, E-8 to E-10
single-channel interval acquisition mode,
E-18 to E-19
register programming considerations, E-1
software programming choices
LabVIEW and LabWindows/CVI
software, 1-2
NI-DAQ driver software, 1-2 to 1-3
register-level programming, 1-3
pulse and square wave generation, 3-25
pulse-width measurement, 3-25
R
RD* signal
description, 3-17
Mode 1 input timing, 3-18
Mode 2 bidirectional timing, 3-20
referenced single-ended input. See RSE input
(eight channels).
registers, D-1 to D-40. See also specific
register groups and individual registers.