The *OPC? query can also be used to achieve sequential execution of the first and the second INITiation.
Note:
Second initiation of the trigger system. Notice that the second initiation is only executed when the actions of the first initiation have been completed.
Resets the instrument.
First initiation of the trigger system.
Send *RST Send INITiate Send *WAI Send INITiate
Description:
The *WAI command prevents the instrument to execute any further command until all previous commands and queries have been completed. The *WAI command is used to force sequential execution of commands by the instrument. On receipt of the *WAI command, the instrument executes all pending commands and queries before it executes the next command or query.
Restrictions:
Be careful. The GPIB controller may interrupt the program by means of timeout. So, verify first whether the timeout period is long enough to cover the operation time of the instrument.
Example:
Syntax:
Wait-to-continue
*WAI
4 - 30
*WAI

COMMAND REFERENCE

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Fluke PM-3380B, PM-3390B, PM-3370B, PM-3394B, PM-3384B user manual Command Reference