Remote Operation
TRACe Subsystem Commands
TRACe:FEED:CONTrol TRATRBTRCTRDTRETRF,ALWaysNEVer
TRACe:FEED:CONTrol? TRATRBTRCTRDTRETRF
Controls how often the specified trace accepts new data. Setting the TRACe:FEED:CONTrol command to ALWays will allow the trace to always accept new data whenever data is available from the FEED. This is equivalent to turning on the trace update from the front panel.
Setting the TRACe:FEED:CONTrol command to NEVer will cause no new data to be fed into the trace. This is equivalent to turning off the trace update from the front panel.
When switching from NEVer to ALWays, all the valid data from the data source is immediately copied into the trace. If, for example:
•the instrument is in single sweep mode.
•TRA has SENSe:DATA as the FEED and NEVer as the FEED:CONTrol.
•SENSe:DATA contains valid measurement data
Setting the TRACe:FEED:CONTrol command from NEVer to ALWays for TRA will immediately copy the SENSe:DATA into trace A. If the instrument was in continuous sweep mode, and a sweep was in progress, setting the CONTrol command from NEVer to ALWays would immediately copy all the valid SENSe:DATA for the partial sweep.
TRACe:POINts TRATRBTRCTRDTRETRF,<numeric_value>
TRACe:POINts? TRATRBTRCTRDTRETRF
Sets the number of data points to be used in the trace. Use only for downloading data with trace subsystem commands. Use SENSe:SWEep:POINts for changing the measurement trace length. Refer to “[SENSe:]SWEep:POINts <numeric_value>” on page