Keysight U2741A, Programmer'S Reference Manual

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2 SCPI Status Registers
22 Keysight U2741A Programmer’s Reference Guide
Standard Event Register
The Standard Event register reports the following types of instrument events:
power-on detected, command syntax errors, command execution errors,
calibration errors, query errors, or when an
*OPC
command is executed. Any or all
of these conditions can be reported in the Standard Event summary bit through
enable register. To set the enable register mask, you write a decimal value to the
register using the event status enable (
*ESE
) command.
Bit Definitions: Standard Event Register
The Standard Event register is cleared when:
– You execute the clear status (
*CLS
) command.
– Querying the event register using the event status register (
*ESR?
) command.
Bit number Decimal value Definition
0 Operation Complete 1 All commands prior to and including
*OPC
have been executed
1 Not Used 2 Always zero
2 Query Error 4 The U2741A tried to read the output buffer but it was empty. Or, a
new command line was received before a previous query has been
read. Or, both the input and output buffers are full.
3 Device Error 8 A self-test or calibration error occurred. For a complete listing of
the error messages, see SCPI Error Messages .
4 Execution Error 16 An execution error occurred (an error in the –200 range has been
generated)
5 Command Error 32 A command syntax error occurred (an error in the –100 range has
been generated)
6 Not Used 64 Always zero
7 Power On 128 Power has been turned off and on since the last time the event
register was read or cleared