Common Commands - Keysight Technologies N3301A Programming Manual

Common Commands

Common commands begin with an * and consist of three letters (command) IEEE 488.2 standard to
perform some common interface functions. The electronic loads respond to the required common
commands that control status reporting, synchronization, and internal operations. The electronic loads
also respond to optional common commands that control triggers, power-on conditions, and stored
operating parameters.
Common commands and queries are listed alphabetically. If a command has a corresponding query that
simply returns the data or status specified by the command, then both command and query are included
under the explanation for the command. If a query does not have a corresponding command or is
functionally different from the command, then the query is listed separately. The description for each
common command or query specifies any status registers affected. Refer to chapter 3 under
"Programming the Status Registers", which explains how to read specific register bits and use the
information that they return.
*CLS
This command clears the following registers (see chapter 3 under "Programming the Status Registers" for
descriptions of all registers):
 Standard Event Status
 Operation Status Event
 Questionable Status Event
 Status Byte
 Error Queue
Command Syntax
Parameters
*ESE
This command programs the Standard Event Status Enable register bits. The programming determines
which events of the Standard Event Status Event register (see *ESR?) are allowed to set the ESB (Event
Summary Bit) of the Status Byte register. A "1" in the bit position enables the corresponding event. All of
the enabled events of the Standard Event Status Event Register are logically ORed to cause the Event
Summary Bit (ESB) of the Status Byte Register to be set. See chapter 3 under "Programming the Status
Registers" for descriptions of the Standard Event Status registers.
The query reads the Standard Event Status Enable register.
*CLS
None
Command Syntax
Parameters
Power-On Value
Examples
Query Syntax
Returned Parameters
Related Commands
*ESE <NRf>
0 to 255
see *PSC
*ESE 129
*ESE?
<NR1>
*ESR? *PSC *STB?
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