194 Keysight Signal Generators Programming Guide
Programming the Status Register System 
Status Groups 
Data Questionable Power Status Group
NOTE Some of the bits in this status group do not apply to the E4428C, E8257D, E8267D, E8663B, 
E8663D, and the N5161A/62A/81A/82A/83A, and returns zero when queried. See Table 4-11 
on page 195 for more information.
The Data Questionable Power Status Group is used to determine the specific event that set bit 3 in 
the Data Questionable Condition Register. This group consists of the Data Questionable Power Condition 
Register, the Data Questionable Power Transition Filters (negative and positive), the Data Questionable 
Power Event Register, and the Data Questionable Power Event Enable Register. 
This is the named 
status register for 
the E4438C. 
However, not all 
signal generator 
models use all of 
the shown events 
(i.e. some use only 
a subset of the 
E4438C’s status 
registers).