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4 - 30 COMMAND REFERENCE
*
WAI Wait-to-continue
Syntax:
*
WAI
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:
Send
→ *RST Resets the instrument.
Send
→ INITiate First initiation of the trigger system.
Send
→ *WAI
Send
→ INITiate Second initiation of the trigger system.
Notice that the second initiation is only executed when the actions of the first
initiation have been completed.
Note: The
*
OPC? query can also be used to achieve sequential execution of
the first and the second INITiation.