29
Status Registers
Status Register System
See “Setting and Querying the Status Register” on page 25 for
more information.
Figure 2 Standard Event Status Register Diagram
The standard event status register contains following bits:
Operation Complete
Request Bus Control
Query Error
Device Dependent Error
Execution Error
Command Error
User Request
Power On
&
&
&
&
&
&
&
+
0 1 2 3 4 5 6 7
Event Enable Register
&
0
1 2
3 4 5 6 7
To Status Byte Register bit #5
Standard Event
Status Register
Bit Description
0 Unused
1 Request Bus Control: This bit is always set to 0. (The analyzer
does not request control.)
2
Query Error: A 1 in this bit position indicates that a query error
has occurred. Query errors have SCPI error numbers from 499 to
400.
3
Device Dependent Error: A 1 in this bit position indicates that
a device dependent error has occurred. Device dependent errors
have SCPI error numbers from –399 to –300 and 1 to 32767.
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