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SCXI-1141/1142/1143 User Manual I-2 ni.com
settings in MAX
NI-DAQmx, 3-3
creating a global channel or
task, 3-3
troubleshooting self-test verification, 1-5
verifying signal, 3-4
NI-DAQmx, 3-4
configuration register, 4-3
configuration settings, gain/input range, 3-1
configuring channel properties, 5-4
connectors
front signal connector
pin assignments (table), 2-2
conventions used in the manual, iv
creating a task
DAQ Assistant, 5-3
programmatically, 5-3
current measurement properties (table), 5-6
cutoff frequency for lowpass filters
passband signal components, 4-5
setting
formula for determining
frequencies, 4-11
ranges for prefilters and postfilters
(table), 4-15
using external clock input, 4-14
D
D GND signal (table), 2-3
DAQ Assistant, creating a task, 5-3
DAQ D*/A signal
digital I/O connections, 2-11
DC-correction circuitry, lowpass filters, 4-15
digital control circuitry, 4-3
digital I/O signal connections
front connector, 2-6
rear connector
emulation of SCXIbus
communication signals, 2-11
SCXIbus to SCXI-1141/1142/1143
pin equivalencies (table), 2-12
digital I/O specifications, A-4
documentation
conventions used in the manual, iv
National Instruments, 1-3
SCXI-1141/1142/1143, 1-2
E
EEPROM
gain and offset correction, 4-4
electromagnetic compatibility
specifications, A-6
elliptic filters, 4-5
environmental specifications, A-6
EXT CLK signal
description (table), 2-3
digital I/O connections, 2-6
external clock input, for setting cutoff
frequencies, 4-14
F
filter bypass mode, 4-16
filter specifications, A-2
filter theory
See also lowpass filters
classification of filters, 4-5
step input response (figure), 4-6
transfer functions (figure), 4-5
floating signal connections (figure), 2-5
AC-coupled (figure), 2-6
frequency dividers, 4-3
front connector
analog input channels
common-mode signal rejection, 2-3
exceeding maximum voltage
(caution), 2-4
signal connections (figures), 2-4, 2-5,
2-6