Keysight 53230A - Page 198

*STB?
Syntax
*STB?
Description
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.
For more information on the SCPI Status System for the Keysight53220A/230A, see
Status System Introduction.
Remarks
l The following table lists the bit definitions for the Status Byte Register.
Bit
Number
Bit Name
Decimal
Value
Definition
0 Not Used 1
(Reserved for future use)
1 Not Used 2
(Reserved for future use)
2 Error Queue 4 One or more errors have been stored in the Error
Queue. Use the SYSTem:ERRor? command to read and
delete errors.
3 Questionable Data Summary 8 One or more enabled bits are set in the Questionable
Data Register (see STATus:QUES-
tionable:ENABle command).
4 Message Available 16 Data is available in the instrument's output buffer.
5 Standard Event Summary 32 One or more enabled bits are set in the Standard
Event Register (see *ESE command).
6 Master Summary 64 One or more enabled bits (0-5 or 7) are set in the
Status Byte Register and may generate a Request for
Service (RQS). Bits are enabled by the *SRE com-
mand.
This bit is ignored (set to 0) by the *SRE command.
7 Standard Operation Summary 128 One or more enabled bits are set in the Standard Oper-
ation Register (see STATus:OPERa-
tion:ENABle command).
l
This command returns the same results as a Serial Poll but the "Master Summary" bit (bit 6) is not
cleared if a Serial Poll has occurred.
*STB?
198 Keysight 53220A/53230A Programmer's Reference