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Chapter 5, Advanced Operations
Instrument Initialization
Interface Clear (IFC) HP-IB Bus Command
The Interface Clear (IFC) Reset is accomplished by having the Active Controller
send the ABORT message to the HP-IB bus (ABORT message = IFC bus control
line TRUE for 100 ms).
The IFC bus command unconditionally terminates all HP-IB bus activity and the
Test Set is unaddressed.
The IFC bus command has no effect on the I/O CONFIGURE, CONFIGURE,
PRINT CONFIGURE, or TESTS (Main Menu, Execution Conditions, External
Devices, Printer Setup) screens.
Other operational characteristics are also affected by the IFC bus command as
follows:
•
The Power-up self-test diagnostics are not performed.
•
The HP-IB interface is not reset (any pending Service Request is not cleared).
•
The Contents of the SAVE/RECALL registers are not affected.
•
Measurement triggering is not affected.
•
Calibration data is not affected .
•
All Enable registers are unaffected: Service Request, Standard Event, Hardware #1,
Hardware #2, Operation, Calibration,Call Processing and Questionable Data/Signal.
•
All Negative Transition Filter registers are unaffected: Hardware #1, Hardware #2, Op-
eration, Calibration,Call Processing and Questionable Data/Signa.l
•
All Positive Transition Filter registers are unaffected: Hardware #1, Hardware #2, Op-
eration, Calibration,Call Processing and Questionable Data/Signal.
•
The contents of the RAM memory are unaffected.
•
The contents of the Error Queue are unaffected.
•
The contents of the Output Queue are unaffected.
•
The state of the Test Set display screen is not affected
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 ...