Tektronix WCA230A, Programmer'S Manual

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Status and Events
3- 14
WCA230A & WCA280A Programmer Manual
Synchronizing Execution
Almost all commands are executed in the order in which they are sent from the
controller, and the execution of each command is completed in a short period of
time. However, the following commands perform data analysis in another thread,
and another command can thus be executed concurrently:
:INITiate commands
:PROGram[:SELected]:EXEcute
:PROGram[:SELected]:NAME
:READ commands
[:SENSe]:ADEMod[:IMMediate]
[:SENSe]:DDEMod[:IMMediate]
[:SENSe]:TRANsient[:IMMediate]
These commands are designed so that the next command to be sent is executed
without waiting for the previous command to be completed. In some cases, a
process executed by another command must first be completed before these
commands can be executed; in other cases, these commands must be completed
before the next command is executed.
You have two options to achieve command synchronization:
H
Using the status and event reporting function
H
Using synchronizing commands
In the following example, a :READ command is used to obtain the measurement
results while the Operation Condition Register (OCR) is being used to provide
synchronization.
:STATus:OPERation:NTRansition 16
// Set the filter of the OCR MEASuring bit
:STATus:OPERation:ENABle 16
// Enable the filter of the OCR MEASuring bit
*SRE 128 // Set the SRER OSS bit
:READ:SPECtrum? // Obtain the measurement results
The command waits for generation of SRQ.
Using the Status and
Event Reporting Function