Agilent Technologies Signal Analyzer N9030a - Manual (Page 135)

3 Programming the Analyzer
STATus Subsystem
Bit Description
0, 1 These bits are always set to 0.
2 A 1 in this bit position indicates that the SCPI error queue is not empty which
means that it contains at least one error message.
3 A 1 in this bit position indicates that the data questionable summary bit has
been set. The data questionable event register can then be read to determine the
specific condition that caused this bit to be set.
4 A 1 in this bit position indicates that the instrument has data ready in the output
queue. There are no lower status groups that provide input to this bit.
5 A 1 in this bit position indicates that the standard event summary bit has been
set. The standard event status register can then be read to determine the
specific event that caused this bit to be set.
6 A 1 in this bit position indicates that the instrument has at least one reason to
report a status change. This bit is also called the master summary status bit
(MSS).
7 A 1 in this bit position indicates that the standard operation summary bit has
been set. The standard operation event register can then be read to determine
the specific condition that caused this bit to be set.
To query the status byte register, send the command *STB? The response will be the decimal sum
of the bits which are set to 1. For example, if bit number 7 and bit number 3 are set to 1, the
decimal sum of the 2 bits is 128 plus 8. So the decimal value 136 is returned. The *STB command
does not clear the status register.
Remote Language Compatibility Measurement Application Reference 135