Overview; What Are Status Registers - Keysight N9320B Programmer's Manual

Status Registers

Overview

Overview

What are Status Registers

Event Register
Event Enable
24
When you are programming the instrument you may need to
monitor instrument status to check for error conditions or monitor
changes. You need to determine the state of certain instrument
events/conditions by programming the status register system.
IEEE common commands (those beginning with *) access the
higher-level summary registers. To access the information from
specific registers you would use the STATus commands. The STATus
subsystem remote commands set and query the status registers.
This system of registers monitors various events and conditions in
the instrument. Software written to control the instrument may
need to monitor some of these events and conditions.
The status system contains multiple registers that are arranged in a
hierarchical order. The lower-level status registers propagate their
data to the higher-level registers in the data structures by means of
summary bits. The status byte register is at the top of the hierarchy
and contains general status information for the instrument's events
and conditions. All other individual registers are used to determine
the specific events or conditions.
Each register set is made up of three registers:
Condition It reports the real-time state of the signals monitored by this
Register register set. There is no latching or buffering for a condition
register.
It latches any signal state changes, in the way specified by the filter
registers. Bits in the event register are never cleared by signal state
changes. Event registers are cleared when read. They are also
cleared by *CLS and by presetting the instrument.
It controls which of the bits, being set in the event register, will be
Register summarized as a single output for the register set. Summary bits
are then used by the next higher register.