National Instruments 1142 用户手册

specifications

amplifier characteristics, A-1
CD compliance, A-7
digital I/O, A-4
electromagnetic compatibility, A-6
environmental characteristics, A-6
filter characteristics, A-2
physical, A-5
safety, A-6
stability, A-4
system noise, A-3
Waste Electrical and Electronic 

stability specifications, A-4
step input response of lowpass filters 

stopband, 4-5
system noise specifications, A-3

theory of operation

block diagram, 4-2
digital control circuitry, 4-3
input amplifiers, 4-3

lowpass filters

DC-correction circuitry, 4-15
external clock input, 4-14
filter theory, 4-5
magnitude response, 4-6
overload recovery, 4-15
performance, 4-6
phase response, 4-8

response to step input (figure), 4-6
SCXI-1141/1142/1143 as 

setting cutoff frequency, 4-11
transfer function characteristics 

timing and triggering, adjusting, 5-3
transfer functions of lowpass filters

troubleshooting

verifying

Visual Basic