Stb - Agilent Technologies U2300A Series Programming Manual

6 IEEE-488 Common Command

*STB?

Syntax
*STB?
This command queries the condition register for the Status Byte Register
group. This command 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
• The following table lists the bit definitions for the Status Byte Register.
Bit Number
0 Not used
1 Not used
2 Error Queue
3 Not used
4 Message Available
5 Standard Event Summary
6 Master Summary
7 Not used
• Use the <enable_value> parameter to specify which bits will be enabled.
48
Decimal Value
Not used
Not used
4
Not used
16
32
64
Not used
The decimal value specified corresponds to the binary- weighted sum of
the bits you wish to enable in the register. For example, to enable bit 1
(decimal value = 2), bit 3 (decimal value = 8), and bit 6 (decimal value
= 64), the corresponding decimal value would be 74 (2 + 8 + 64).
Definition
Always zero
Always zero
One or more errors have been stored in the Error Queue
Use the SYSTem:ERRor?
errors
Always zero
Data is available in the instrument's output buffer for
single SCPI query but not for continuous acquisition
output buffer
One or more bits are set in the Standard Event Register
(bits must be enabled, see
One or more bits are set in the Status Byte Register and
may generate a Request for Service (RQS)
Bits must be enabled using the
Always zero
U2300A Series USB DAQ Programming Guide
command to read and delete
*ESE command)
*SRE command