8 General Programming
184 M8190A User’s Guide
8.6.6 *OPC?
Return “1” to the output buffer after the previous commands have been completed.
Other commands cannot be executed until this command completes.
Read the installed options. The response consists of any number of fields separated
by commas.
Reset instrument to its factory default state.
Enable bits in the Status Byte to generate a Service Request. To enable specific bits,
you must write a decimal value which corresponds to the binary-weighted sum of the
bits in the register. The selected bits are summarized in the “Master Summary” bit
(bit 6) of the Status Byte Register. If any of the selected bits change from “0” to “1”, a
Service Request signal is generated. The *SRE? query returns a decimal value which
corresponds to the binary-weighted sum of all bits enabled by the *SRE command.
Query the summary (status byte condition) register in this register group. This
command is similar to a Serial Poll but it is processed like any other instrument
command. This command returns the same result as a Serial Poll but the “Master
Summary” bit (bit 6) is not cleared by the *STB? command.
Execute Self Tests. If self-tests pass, a 0 is returned. A number lager than 0 indicates
the number of failed tests.
To get actual messages, use :TEST:TST?
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