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Chapter 2 Function Reference — GPCTR_Change_Parameter
NI-DAQ FRM for PC Compatibles 2-200
©
National Instruments Corporation
Note The default source selection for all other applications is ND_INTERNAL_20_MHZ.
Use this function with paramID =
ND_SOURCE_POLARITY
to select polarity of transitions to
use for counting.
Note If you have configured an analog hardware trigger using the
Config_HW_Analog_Trigger
function, the resulting analog trigger circuitry
output is available as
ND_PFI_0
.
Table 2-22.
Definition of Other Counter for
paramValue
Set to
ND_OTHER_GPCTR_TC
gpctrNum
Other Counter: E Series,
All DSA (445X and 455X)
Devices
Other Counter: 6602 Devices
ND_COUNTER_0 ND_COUNTER_1 ND_COUNTER_1
ND_COUNTER_1 ND_COUNTER_0 ND_COUNTER_0
ND_COUNTER_2
N/A
ND_COUNTER_3
ND_COUNTER_3
N/A
ND_COUNTER_2
ND_COUNTER_4
N/A
ND_COUNTER_5
ND_COUNTER_5
N/A
ND_COUNTER_4
ND_COUNTER_6
N/A
ND_COUNTER_7
ND_COUNTER_7
N/A
ND_COUNTER_6
Table 2-23.
Default Source Selection for
ND_SIMPLE_EVENT_CNT
or
ND_BUFFERED_EVENT_CNT
gpctrNum E Series and 445X Devices 6602 Devices 455X Devices
ND_COUNTER_0 ND_PFI_8 ND_PFI_39 ND_PFI_31
ND_COUNTER_1 ND_PFI_3 ND_PFI_35 ND_PFI_27
ND_COUNTER_2
N/A
ND_PFI_31
N/A
ND_COUNTER_3
N/A
ND_PFI_27
N/A
ND_COUNTER_4
N/A
ND_PFI_23
N/A
ND_COUNTER_5
N/A
ND_PFI_19
N/A
ND_COUNTER_6
N/A
ND_PFI_15
N/A
ND_COUNTER_7
N/A
ND_PFI_11
N/A