Technical data

2 IEEE-488.2 Common Commands
26 U2761A Programmer’s Reference
*STB?
Syntax
*STB?
This query reads the summary (condition) of the Status Byte register and
returns a decimal value which corresponds to the binary- weighted sum of
all bits set in the register. This query is similar to a Serial Poll but it is
processed like any other instrument command. This is a read- only register
and the bits are not cleared when you read the register.
Remarks
• For more information on the Status Byte register, refer to Chapter 1,
“Status system diagram” on page 12. The bit definitions for the Status
Byte register are listed in “Status Byte register” on page 15.
• This query returns the same results as a Serial Poll but the “Master
Summary” bit (bit 6) is not cleared if a Serial Poll has occurred.
Example
The following query reads the condition register (assumed that bits 3 and
4 are set).
*STB?
Typical response:
+24
?*STB