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Programmer’s Guide
Introduction to GPIB Programming
Programming Fundamentals
Response to Bus Management Commands
The GPIB contains an attention (ATN) line that determines whether the
interface is in command mode or data mode. When the interface is in
command mode (ATN TRUE), a controller can send bus management
commands over the bus. Bus management commands specify which
devices on the interface can talk (send data) and which can listen
(receive data). They also instruct devices on the bus, either individually
or collectively, to perform a particular interface operation.
This section describes how the analyzer responds to the GPIB
management commands. The commands themselves are defined by the
IEEE 488.1 standard. Refer to the documentation for your controller's
language system to determine how to send these commands.
Device Clear (DCL)
When the analyzer receives this command, it does the following:
• clears its input and output queues
• resets its command parser (so it is ready to receive a new program
message)
• cancels any pending
*OPC
command or query
The command does not affect the following:
• front panel operation
• any analyzer operations in progress (other than those already
mentioned)
• any instrument settings or registers (although clearing the output
queue may indirectly affect the status byte's Message Available
(MAV) bit)
Go To Local (GTL)
This command returns the analyzer to local (front-panel) control. All
keys on the analyzer's front-panel are enabled.
Содержание 8712ES
Страница 11: ...1 1 1 Introduction to GPIB Programming ...
Страница 27: ...2 1 2 Synchronizing the Analyzer and a Controller ...
Страница 36: ...3 1 3 Passing Control ...
Страница 39: ...4 1 4 Data Types and Encoding ...
Страница 46: ...5 1 5 Using Status Registers ...
Страница 71: ...6 1 6 Trace Data Transfers ...
Страница 98: ...6 28 Programmer sGuide Trace Data Transfers Internal Measurement Arrays ...
Страница 99: ...7 1 7 Using Graphics ...
Страница 105: ...8 1 8 Front Panel Keycodes ...
Страница 111: ...9 1 9 Introduction to SCPI ...
Страница 129: ...10 1 10 Menu Map with SCPI Commands ...
Страница 268: ...12 1 12 SCPI Conformance Information ...
Страница 290: ...13 1 13 SCPI Error Messages ...