Anritsu MS9740A - Page 44

Chapter 2 Before Use
2-28
Using
*WAI
The
*WAI
common command instructs processing to wait until processing
of the message sent before the
*WAI
command is completed before
executing the next command.
Examples of Use:
:INIT; WAI; :CALC:MARKer1:MAX;
:CALC:MARK1:Y?
Figure 2.7-2 Sync Control by*WAI
Using
*OPC
The
*OPC?
common command queries the OPC bit indicating the end of
message processing.
Examples of Use:
:INIT
Executes single measurement
*OPC?
Queries OPC bit
> 1
SSI execution completed when 1
received
:CALC:MARKer1:MAX
Executes peak search
*OPC?
Queries OPC bit
> 1
PKS PEAK execution completed when 1
received
:CALC:MARK1:Y?
Queries trace marker data
Time
Message received
:INIT;
Sweeping
:CALC:MARKer1:MAX;
Peak search detection
:CALC:MARK1:Y?
Save to marker data
output queue
Peak detected at this time point
Next message stopped
by
*WAI