Class This class of functions begins or terminates an acquisition. However, before you use this call you need to know the exact location address of the resource you want to open. It is possible to have more than one session open for the same resource. For example, you could use the following code to obtain the logical address of a VXI address: You can find instrument drivers for more than 5, instruments on the Instrument Driver Network. Instrument drivers simplify instrument control and reduce test program development time by eliminating the need to learn the programming protocol for each instrument. A powerful feature of VISA is the concept of a single interface for finding and accessing devices on various platforms.
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Instrument Control in LabWindows/CVI Tutorial
You can load and unload instrkment drivers manually using the Instruments Folder in the Library Tree or using the Instrument menu. Your application can then use the session returned from this call to open sessions to resources controlled by that Resource Manager.
These services include, but are not limited to, assigning unique resource addresses and unique resource IDs, locating resources, and creating sessions. Configuring a Session After the Resource Manager opens a session, communication with the device can usually begin using the default session settings. For example, the instrument module labwindods for the Agilent HP A multimeter are hpa. As you specify and configure each step, click the Run this step button to execute the operations you configure, or click the Run button to perform the entire sequence.
Using the above examples, the logical address is a bit value, instrunent the baud rate is a bit value.
Rate this document Select a Rating 1 – Poor 2 3 4 5 – Excellent. If you drop the. However, before you use this call you need to know the exact location address of the resource you want to open.
HMCX | Instrument Drivers | Rohde & Schwarz
Finally, the data types of some attribute values are different from each other. You must arrange the following steps into a sequence. Back to Top 2.
Instrument drivers loaded through the Instruments folder or Instrument menu do not have to be listed in the project, and you can load or unload them at any time except during program execution.
The following figure shows the function tree layout for the Agilent A driver. Class This class of functions begins or terminates an acquisition. It is possible to have more than one session open for the same resource.
You also can load instrument drivers by dropping. Look here to find an instrument driver for your particular instrument.
This function performs the following initialization actions: You can use the attributes to configure a session or to instrumwnt a particular resource. As shown in the previous section, you can create instrment session to a resource using the viOpen call.
Each file has the same base file name, which is typically an abbreviation of the actual instrument name. When referencing your instrument, you can use the canonical resource name that is assigned to your instrument or NI-VISA also supports the use of aliases to make opening devices easier.
Returns an Instrument Handle which is used to differentiate between different sessions of this instrument driver.