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© National Instruments Corporation I-3 NI 6238/6239 User Manual
conventions used in the manual, xiii
Counter n A signal, 7-29
Counter n Aux signal, 7-28
Counter n B signal, 7-29
Counter n Gate signal, 7-28
Counter n HW Arm signal, 7-29
Counter n Internal Output signal, 7-30
Counter n Source signal, 7-26
Counter n TC signal, 7-30
Counter n Up_Down signal, 7-29
Counter n Z signal, 7-29
counter output applications, 7-21
counter signals
Counter n A, 7-29
Counter n Aux, 7-28
Counter n B, 7-29
Counter n Gate, 7-28
Counter n HW Arm, 7-29
Counter n Internal Output, 7-30
Counter n Source, 7-26
Counter n TC, 7-30
Counter n Up_Down, 7-29
FREQ OUT, 7-30
Frequency Output, 7-30
counter terminals, default, 7-31
counters
cascading, 7-33
duplicate count prevention, 7-35
edge counting, 7-3
filters, 7-33
generation, 7-21
input applications, 7-3
other features, 7-33
output applications, 7-21
prescaling, 7-34
pulse train generation, 7-23
retriggerable single pulse
generation, 7-22
simple pulse generation, 7-21
single pulse generation, 7-21
single pulse generation with start
trigger, 7-21
synchronization modes, 7-38
timing signals, 7-26
triggering, 7-32
troubleshooting, B-3
counting edges, 7-3
crosstalk when sampling multiple
channels, B-1
current
connecting analog input signals, 4-3
connecting analog output, 5-4
custom cabling, 2-4
D
DACs, 5-1
DAQ
hardware, 2-1
system, 2-1
DAQ-STC2, 2-2
data
acquisition methods, 4-10
generation methods, 5-2
data transfer methods, 11-3
changing, 11-4
DMA, 11-3
IRQ, 11-4
programmed I/O, 11-4
Declaration of Conformity (NI resources), C-1
default counter terminals, 7-31
device
cabling, 2-4
information, A-1
multiple synchronization, 10-3
specifications, 1-2
diagnostic tools (NI resources), C-1
differential, analog input
(troubleshooting), B-1