5522A
Operators Manual
iv
How to Test the RS-232 UUT Port via IEEE-488 Port ................................. 5-18
How to Change between Remote and Local Operation..................................... 5-20
Local State ..................................................................................................... 5-20
Local with Lockout State............................................................................... 5-20
Remote State.................................................................................................. 5-20
Remote with Lockout State ........................................................................... 5-21
RS-232 Interface Overview ............................................................................... 5-21
IEEE-488 Interface Overview............................................................................ 5-22
How to Use Commands ..................................................................................... 5-25
Types of Commands...................................................................................... 5-25
Device-Dependent Commands.................................................................. 5-25
Common Commands................................................................................. 5-25
Query Commands...................................................................................... 5-25
Interface Messages (IEEE-488) ................................................................ 5-26
Compound Commands .................................................................................. 5-27
Coupled Commands .................................................................................. 5-28
Overlapped Commands............................................................................. 5-28
Sequential Commands............................................................................... 5-29
Commands that Require the Calibration Switch ....................................... 5-29
Commands for RS-232 Only..................................................................... 5-29
Commands for IEEE-488 Only ................................................................. 5-30
Command Syntax .......................................................................................... 5-30
Parameter Syntax Rules ............................................................................ 5-30
Extra Space or Tab Characters .................................................................. 5-32
Terminators ............................................................................................... 5-32
Incoming Character Processing................................................................. 5-33
Response Message Syntax ........................................................................ 5-33
Checking 5522A Status ..................................................................................... 5-34
Serial Poll Status Byte (STB) ........................................................................ 5-35
Service Request (SRQ) Line ..................................................................... 5-37
Service Request Enable Register (SRE).................................................... 5-37
Programming the STB and SRE................................................................ 5-37
Event Status Register (ESR).......................................................................... 5-38
Event Status Enable (ESE) Register.......................................................... 5-38
Bit Assignments for the ESR and ESE...................................................... 5-38
Programming the ESR and ESE................................................................ 5-39
Instrument Status Register (ISR)................................................................... 5-40
Instrument Status Change Registers.......................................................... 5-40
Instrument Status Change Enable Registers.............................................. 5-40
Bit Assignments for the ISR, ISCR, and ISCE ......................................... 5-40
Programming the ISR, ISCR, and ISCE ................................................... 5-41
Output Queue................................................................................................. 5-42
Error Queue ................................................................................................... 5-42
Remote Program Examples................................................................................ 5-42
Guidelines for Programming the Calibrator .................................................. 5-42
Writing an SRQ and Error Handler ............................................................... 5-43
Verifying a Meter in the IEEE-488 Bus ........................................................ 5-44
Verifying a Meter on the RS-232 UUT Serial Port ....................................... 5-44
Using *OPC?, *OPC, and *WAI................................................................... 5-44
Taking a Thermocouple Measurement .......................................................... 5-45
Taking a Pressure Measurement.................................................................... 5-45
Using the RS-232 UUT Port to Control an Instrument ................................. 5-46
Input Buffer Operation .................................................................................. 5-46
6 Remote
Commands.............................................................................
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