Measurement-computing Data Acquisition Systems rev.10.4 Manuel d'utilisateur télécharger pdf (Page 9)

Programmer’s Manual 908494 Introduction 1-3

Driver Installation

Driver installation uses a 32-bit setup on a Windows 95/98/Me or Windows NT/2000/XP

system. When run, the setup routine will automatically detect the correct operating system

and will install the appropriate driver.

A Note Regarding Devices and API Command Applicability

API commands cannot be used universally with all products. For example, a command that

pertains only to analog output is of no use to a device that does not support analog I/O, or to

a device that supports analog input, but not analog output. Thus it is important that you

understand the features and capabilities of your hardware before using API Commands. Prior

awareness can save a great deal of programming time and avoid possible frustration.

One category of functionality that sometimes causes confusion is that of waveform/pattern

output. The following table indicates which of the 4 types of waveform output apply to various

product groups. Waveform output definitions follow the table.

Waveform/Pattern Output Device Capabilities

Product * Static

Waveform

Dynamic

Waveform

Output from

Disk

Streamed Digital

Pattern Output

DaqBoard/500 Series Yes No No No

DaqBoard/1000 Series Yes Yes Yes No

DaqBoard/2000 Series Yes Yes Yes Yes

DaqBook/2000 Series Yes No No No

DaqLab/2000 Series Yes No No No

DaqScan/2000 Series Yes No No No

/3000 Series Devices Yes Yes Yes Yes

* Not all devices in a series have static waveform output capability. The feature is only

present for devices that have built-in DAC channel output circuitry, or if the device has

a DBK46 option installed.

Consult your specific hardware documentation for detailed

information.

Static Waveform: Data is downloaded to the internal memory on the device and then played

out from the device’s internal memory. Once the waveform output is downloaded and

initiated additional output updates from the PC cannot be performed. However the waveform

can be played out indefinitely from the internal memory on the device.

Dynamic Waveform: Data is downloaded to the device and can be continuously updated by

the PC while the waveform output is active. Updates to the output can come from PC memory

or from a file.

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Measurement-computing Data Acquisition Systems rev.10.4 Manuel d'utilisateur Page 9