Status and Events
3- 6
WCA230A & WCA280A Programmer Manual
The SBR is made up of 8 bits. Bits 4, 5 and 6 are defined in accordance with
IEEE Std 488.2-1987 (see Figure 3--2 and Table 3--1). These bits are used to
monitor the output queue, SESR and service requests, respectively. The contents
of this register are returned when the *STB? query is used.
RQS
ESB MAV
—
—
MSS
7
6
5
4
3
2
1
0
6
OSS
QSS EAV
Figure 3- 2: The Status Byte Register (SBR)
Table 3- 1: SBR bit functions
Bit
Function
7
Operation Summary Status (OSS). Summary of the operation status register.
6
Request Service (RQS)/Master Status Summary (MSS). When the instrument
is accessed using the GPIB serial poll command, this bit is called the Request
Service (RQS) bit and indicates to the controller that a service request has
occurred (in other words, that the GPIB bus SRQ line is LOW). The RQS bit is
cleared when serial poll ends.
When the instrument is accessed using the *STB? query, this bit is called the
Master Status Summary (MSS) bit and indicates that the instrument has issued
a service request for one or more reasons. The MSS bit is never cleared to 0 by
the *STB? query.
5
Event Status Bit (ESB). This bit indicates whether or not a new event has
occurred after the previous Standard Event Status Register (SESR) has been
cleared or after an event readout has been performed.
4
Message Available Bit (MAV). This bit indicates that a message has been
placed in the output queue and can be retrieved.
3
Questionable Summary Status (QSS). Summary of the Questionable Status
Byte register. It is always zero in the WCA230A/WCA280A analyzer.
2
Event Quantity Available (EAV). Summary of the Error Event Queue.
1--0
Not used
Status Byte Register
(SBR)
Summary of Contents for WCA230A
Page 13: ...Getting Started...
Page 14: ......
Page 24: ...Getting Started 1 10 WCA230A WCA280A Programmer Manual...
Page 25: ...Syntax and Commands...
Page 26: ......
Page 92: ...CALCulate Commands 2 66 WCA230A WCA280A Programmer Manual...
Page 100: ...CALibration Commands 2 74 WCA230A WCA280A Programmer Manual...
Page 114: ...CONFigure Commands 2 88 WCA230A WCA280A Programmer Manual...
Page 270: ...DISPlay Commands 2 244 WCA230A WCA280A Programmer Manual...
Page 320: ...FETCh Commands 2 294 WCA230A WCA280A Programmer Manual...
Page 326: ...HCOPy Commands 2 300 WCA230A WCA280A Programmer Manual...
Page 330: ...INITiate Commands 2 304 WCA230A WCA280A Programmer Manual...
Page 350: ...MMEMory Commands 2 324 WCA230A WCA280A Programmer Manual...
Page 356: ...PROGram Commands 2 330 WCA230A WCA280A Programmer Manual...
Page 396: ...READ Commands 2 370 WCA230A WCA280A Programmer Manual...
Page 554: ...SENSe Commands 2 528 WCA230A WCA280A Programmer Manual...
Page 562: ...STATus Commands 2 536 WCA230A WCA280A Programmer Manual...
Page 572: ...SYSTem Commands 2 546 WCA230A WCA280A Programmer Manual...
Page 578: ...TRACe Commands 2 552 WCA230A WCA280A Programmer Manual...
Page 594: ...TRIGger Commands 2 568 WCA230A WCA280A Programmer Manual...
Page 598: ...Retrieving Response Message 2 572 WCA230A WCA280A Programmer Manual...
Page 599: ...Status and Events...
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Page 616: ...Status and Events 3 16 WCA230A WCA280A Programmer Manual...
Page 623: ...Programming Examples...
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Page 641: ...Appendices...
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Page 660: ...Appendix C Factory Initialization Settings C 12 WCA230A WCA280A Programmer Manual...
Page 668: ...Appendix E SCPI Conformance Information E 4 WCA230A WCA280A Programmer Manual...
Page 669: ...Glossary and Index...
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Page 672: ...Glossary Glossary 2 WCA230A WCA280A Programmer Manual...
Page 676: ...Index Index 4 WCA230A WCA280A Programmer Manual...
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