Agilent Technologies 42D Guide de l'utilisateur télécharger pdf (Page 38)

3-4

Programming over GPIB

Addressing

To set up the GPIB interface (optional Agilent N2757A GPIB Interface Module

must be connected to the oscilloscope), refer to the “To set up the I/O port to

use a controller” topic in the Utilities chapter of the User’s Guide.

• Each device on the GPIB resides at a particular address, ranging from 0 to 30.

• The active controller specifies which devices talk and which listen.

• An instrument may be talk addressed, listen addressed, or unaddressed by

the controller.

If the controller addresses the instrument to talk, the instrument remains

configured to talk until it receives an interface clear message (IFC), another

instrument’s talk address (OTA), its own listen address (MLA), or a universal

untalk command (UNT).

If the controller addresses the instrument to listen, the instrument remains

configured to listen until it receives an interface clear message (IFC), its own

talk address (MTA), or a universal unlisten command (UNL).

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Agilent Technologies 42D Guide de l'utilisateur Page 38