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Using the DAS-1700 Series with DriverLINX
Keithley DAS-1700 Series
Analog Input Subsystem
The following sections describe how DriverLINX implements Analog Input
Subsystem features for the DAS-1700 Series.
Analog Input Modes
The Analog Input Subsystem supports the following modes:
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Polled—For single-value or single-scan analog input samples.
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Interrupt—For buffered transfers using programmed I/O.
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DMA—For buffered transfers using direct memory access.
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Other—For subsystem initialization and data conversion.
Analog Input Operations
The DAS-1700 Series Analog Input Subsystem supports the following DriverLINX
operations:
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Initialize—aborts all active analog input data-acquisition tasks.
However, DriverLINX prevents one application from interfering with
another application’s data-acquisition tasks.
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Start—initiates a data-acquisition task using the Mode, Timing, Start,
and Stop Events, the Logical Channels, and the Buffers the application
specified in the Service Request.
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Status—reports the buffer position of the next sample that DriverLINX
will write into a buffer.
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Stop—terminates an analog input data-acquisition task.
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Message—DriverLINX displays a pop-up dialog box for the user
containing the text for the current DriverLINX error message.
Analog Input Pacing, Triggering and Gating
Options
The DAS-1700 Series User’s Guides describe several pacing, triggering and gating
options available on DAS-1700 models. The following table summarizes these
options and identifies which Service Request properties use them. Except as
indicated all tasks must use Interrupt or DMA mode.
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