Keysight Technologies 86120B, User Manual

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Programming
Monitoring the Instrument
Monitoring the Instrument
Almost every program that you write will need to monitor the Keysight 86120B for
its operating status. This includes querying execution or command errors and deter-
mining whether or not measurements have been completed. Several status registers
and queues are provided to accomplish these tasks.
In this section, you’ll learn how to enable and read these registers. In addition to the
information in this section, you should review the commands documented in
“Com-
mon Commands” on page 133 and “STATus Subsystem” on page 206 .
Status registers
The Keysight 86120B provides four registers which you can query to monitor the
instrument’s condition. These registers allow you to determine the following items:
• Status of an operation
• Availability of the measured data
• Reliability of the measured data
All three registers are shown in the figure on the following page and have the fol-
lowing uses:
Register
Definition
Status Byte Monitors the status of the other three registers.
Standard Event Status This is the standard IEEE 488.2 register. Contains
bits which indicate the status of the other two regis-
ters.
OPERation Status Contains bits that report on the instrument’s normal
operation.
QUEStionable Status Contains bits that report on the condition of the sig-
nal.