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)
To Next Page
Loading...
Need help?
General
