Keysight E4428C ESG RF Programming Manual page 170

Programming the Status Register System
Overview
reporting instrument status using the register model.
The SCPI register model of the status system has multiple registers that are arranged in a
hierarchical order. The lower- priority status registers propagate their data to the higher- priority
registers using summary bits. The Status Byte Register is at the top of the hierarchy and contains the
status information for lower level registers. The lower level registers monitor specific events or
conditions.
The lower level status registers are grouped according to their functionality. For example, the Data
Questionable Frequency Status Group consists of five registers. This chapter may refer to a group as
a register so that the cumbersome longer description is avoided. For example, the Standard Operation
Status Group's Condition Register can be referred to as the Standard Operation Status register. Refer
to "Status Groups" on page 179 for more information.
Figure 4-1, Figure 4-2, Figure 4-3, Figure 4-4, Figure 4-5, and Figure 4-6 shows each signal generator
model's signal generator's status byte register system and hierarchy.
The status register systems use IEEE 488.2 commands (those beginning with *) to access the
higher- level summary registers (refer to the SCPI Command Reference). Access Lower- level registers
by using STATus commands.
162 Keysight Signal Generators Programming Guide