User`s guide

10 ? PCIS-LVIEW NT/2000/98 Overview
4.2 Analog Input Function Group
4.2.1 Analog Input Configuration VIs
AI 9111 Config: Informs PCIS-LVIEW of the trigger source and trigger mode selected for the analog input operation
of PCI9111.
AI 9112 Config: Informs PCIS-LVIEW of the trigger source selected for the analog input operation of PCI9112.
AI 9113 Config: Informs PCIS-LVIEW of the trigger source selected for the analog input operation of PCI9113.
AI 9114 Config: Informs PCIS-LVIEW of the trigger source selected for the analog input operation of PCI9114.
AI 9118 Config: Informs PCIS-LVIEW of the trigger source, trigger mode, input mode, and conversion mode
selected for the analog input operation of PCI9118.
AI 9812 Config: Informs PCIS-LVIEW of the trigger source, trigger mode, and trigger properties selected for the
analog input operation of PCI9812/9810.
AI Initial Memory Allocated: Gets the actual size of analog input memory that is available in the device driver.
4.2.2 One-Shot Analog Input VIs
AI Read Channel: Performs a software triggered A/D conversion (analog input) on an analog input channel and
returns the value converted.
AI VRead Channel: Performs a software triggered A/D conversion (analog input) on an analog input channel and
returns the value scaled to a voltage in units of volts.
AI VScale: Converts the result from an AI_ReadChannel call to the actual input voltage.
4.2.3 Continuous Analog Input VIs
AI Cont Read Channel 2-byte / AI Cont Read Channel 4-byte: Starts continuous A/D conversions on the
specified analog input channel.
AI Cont Scan Channels 2-byte / AI Cont Scan Channels 4-byte: Starts continuous A/D conversions on the
specified continuous analog input channels.
AI Cont Read Multiple Channels: Starts continuous A/D conversions on the specified analog input channels
(PCI-9118 only).
AI Cont Read Channel To File: Starts a continuous A/D conversions on the specified analog input channel and
saves the acquired data in a disk file.
AI Cont Scan Channels To File: Starts continuous A/D conversions on the specified continuous analog input
channels and saves the acquired data in a disk file.
AI Cont Read Multiple Channels To File: Starts continuous A/D conversions on the specified analog input
channels and saves the acquired data in a disk file (PCI-9118 only).
AI Cont VScale: Converts the values of an array of acquired data from an continuous A/D conversion call to the
actual input voltages.
AI Cont Status: Checks the current status of the continuous analog input operation.
4.2.4 Asynchronous Analog Input Monitoring VIs
AI Async Check: Checks the current status of the asynchronous analog input operation.
AI Async Clear: Stops the asynchronous analog input operation.
AI Async Double Buffer Mode: Enables or Disables double buffer data acquisition mode.
AI Async Double Buffer Half Ready: Checks whether the next half buffer of data in circular buffer is ready for
transfer during an asynchronous double-buffered analog input operation.
AI Async Double Buffer Transfer: Copies half of the data of circular buffer to user buffer. You can execute this
function repeatedly to return sequential half buffers of the data.