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Chapter 5, Advanced Operations
HP-IB Service Requests
HP-IB Service Requests
The Test Set is capable of generating a “service request” when it requires the
Active Controller to take action. Service requests are generally made after the
Test Set has completed a task (such as making a measurement) or when an error
condition exists (such as an internal self-calibration has failed).
The mechanism by which the Active Controller detects these requests is the SRQ
interrupt. Interrupts allow for efficient use of system resources, because the
Active Controller may be executing a program until an SRQ interrupt occurs. If
SRQ interrupts are enabled in the Active Controller, the occurrence of an interrupt
can initiate a program branch to a routine which “services” the interrupt (executes
some remedial action). The operating and/or programming manuals for each
controller describe the controller’s capability to set up and respond to SRQ
interrupts.
This section describes the steps necessary to properly configure the Test Set to
request service using the Service Request (SRQ) function.
Summary of Contents for 8920B
Page 10: ...10 ...
Page 16: ...Contents 16 9 Error Messages Index 673 ...
Page 17: ...17 1 Using HP IB ...
Page 48: ...48 Chapter 1 Using HP IB Remote Local Modes ...
Page 49: ...49 2 Methods For Reading Measurement Results ...
Page 61: ...61 3 HP IB Command Guidelines ...
Page 84: ...84 Chapter 3 HP IB Command Guidelines Guidelines for Operation ...
Page 85: ...85 4 HP IB Commands ...
Page 90: ...90 Adjacent Channel Power ACP ...
Page 116: ...116 Configure I O Configure ...
Page 156: ...156 Call Processing ...
Page 185: ...185 System System SYSTem ERRor Returns integer value quoted string ...
Page 242: ...242 Common Command Descriptions ...
Page 251: ...251 5 Advanced Operations ...
Page 377: ...377 7 IBASIC Controller ...
Page 458: ...458 Chapter 7 IBASIC Controller The TESTS Subsystem ...
Page 640: ...640 Chapter 8 Programming The Call Processing Subsystem Example Programs 11280 SUBEND 11290 ...
Page 643: ...643 9 Error Messages ...
Page 672: ...672 ...
Page 682: ...Index 682 ...