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Chapter 2 Function Reference — Init_DA_Brds
NI-DAQ FRM for PC Compatibles 2-258
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National Instruments Corporation
Using This Function
Init_DA_Brds initializes the device in the specified slot to the default conditions. These
conditions are summarized for each device as follows:
• MIO and AI devices
– Analog Input defaults:
number of channels = 2.
Mode = Differential.
Range = 20 V (10 V for AT-MIO-16F-5, AT-MIO-64F-5, and 12-bit E Series).
Polarity = Bipolar (–10 V to +10 V for MIO-16, AT-MIO-16D, AT-MIO-16X,
PCI-6110E, PCI-6111E, and 16-bit E Series devices; and –5 to +5 V for all
other devices).
External conversion = Disabled.
Start trigger = Disabled.
Stop trigger = Disabled.
Coupling = DC coupling.
Gain and offset calibration values are loaded (AT-MIO-16F-5 only).
– Analog Output defaults (MIO devices only):
Range = 20 V.
Reference = 10 V.
Mode = Bipolar (–10 to +10 V).
Level = 0 V.
– Digital Input and Output defaults:
Direction = Input.
For ports 2, 3, and 4 of the AT-MIO-16D and AT-MIO-16DE-10, see also the
default conditions of ports 0, 1, and 2 of the DIO-24.
– Counter/Timer defaults for Am9513-based MIO devices:
Gating mode = No gating.
Output type = Terminal count toggled (that is, TC toggled).
Output polarity = Positive.
Edge mode = Count rising edges.
Count mode = Count once.
Output level = Off. After you call
Init_DA_Brds, the output of each counter
is in a high-impedance state. Counter 1 on the MIO-16 and AT-MIO-16D, and
counters 1, 2, and 5 on the AT-MIO-16F-5, AT-MIO-64F-5, and AT-MIO-16X
are pulled up to +5 V while in the high-impedance state.