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Programmer’s Guide
1-11
Introduction to GPIB Programming
Programming Fundamentals
Interface Clear (IFC)
This command causes the analyzer to halt all bus activity. It
discontinues any input or output, although the input and output queues
are not cleared. If the analyzer is designated as the active controller
when this command is received, it relinquishes control of the bus to the
system controller. If the analyzer is enabled to respond to a Serial Poll, it
becomes Serial Poll disabled.
Local Lockout (LLO)
This command causes the analyzer to enter the local lockout mode,
regardless of whether it is in the local or remote mode. The analyzer only
leaves the local lockout mode when the GPIB Remote Enable (REN) line
is set FALSE.
Local Lockout ensures that the analyzer's remote softkey menu
(including the
softkey) is disabled when the analyzer
is in the remote mode. When the key is enabled, it allows a front-panel
operator to return the analyzer to local mode, enabling all other
front-panel keys. When the key is disabled, it does not allow the
front-panel operator to return the analyzer to local mode.
Parallel Poll
The analyzer ignores all of the following parallel poll commands:
• Parallel Poll Configure (PPC)
• Parallel Poll Unconfigure (PPU)
• Parallel Poll Enable (PPE)
• Parallel Poll Disable (PPD)
Return to Local
Summary of Contents for 8712ES
Page 11: ...1 1 1 Introduction to GPIB Programming ...
Page 27: ...2 1 2 Synchronizing the Analyzer and a Controller ...
Page 36: ...3 1 3 Passing Control ...
Page 39: ...4 1 4 Data Types and Encoding ...
Page 46: ...5 1 5 Using Status Registers ...
Page 71: ...6 1 6 Trace Data Transfers ...
Page 98: ...6 28 Programmer sGuide Trace Data Transfers Internal Measurement Arrays ...
Page 99: ...7 1 7 Using Graphics ...
Page 105: ...8 1 8 Front Panel Keycodes ...
Page 111: ...9 1 9 Introduction to SCPI ...
Page 129: ...10 1 10 Menu Map with SCPI Commands ...
Page 268: ...12 1 12 SCPI Conformance Information ...
Page 290: ...13 1 13 SCPI Error Messages ...