Anritsu MT9083 Series Operation Manual page 23

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.
Example of Use:
Wavelength change after measurement completed
Execution of next
message stopped by
*WAI
INIT Measurement
Figure 2.7-2 Sync Control using *WAI
Using *OPC?
The *OPC? common command queries the OPC bit indicating the end
of message processing.
Examples of Use:
INIT
*OPC?
> 1
SENS:TRAC:READY? Queries presence/absence of measured
> 1
TRAC:LOAD:SOR?
SOUR:WAV 1550
INIT
2.7 Controlling Message Sync
INIT ; *WAI ; SOUR:WAV 1550; INIT
SOUR:WAV 1550
Waveform
change
Executes averaging measurement
Queries if operation is completed and
waits until "1" returns.
Measuring stopped when response is 1.
waveform data
Waveform data is ready when response
is 1.
Gets trace object from OTDR
Changes wavelength
Starts measurement with new
measurement conditions
2
INIT
Measurement start
after conditions
change
Time
2-15