TRACe Subsystem
AM700 Audio Measurement Set Programmer Manual 3–179
TRACe:DATA <trace_name>,[X,Y]{,X,Y}
Usage: TRAC:DATA can be used to assign new values to the measurement trace and
available reference traces. Previous trace values are discarded. For XY plots,
the numbers that are assigned are XY pairs.
Example: TRAC:DATA AME1_REF,10000,0.5,15000,0.25 sets the reference
trace for the first measurement to two points (presumably level versus
frequency).
Example: TRAC:DATA FREQ1_REF,100 sets the reference value for the Channel A
frequency in the real time analyzer box to 100 Hz. Whenever any of the real
time reference traces are set, the real-time box automatically changes to a delta
mode for the current unit shown.
TRACe:DATA:CLEar <trace_name>
Usage: TRACe:DATA:CLEar <trace_name> clears the contents of the specified
trace.
Parameters: The <trace_name> arguments are those traces returned by the TRAC:CAT?
query as explained previously in that command description.
Example: TRAC:DATA:CLE AME1_1 clears the data for the first Audio Analyzer
measurement.
TRACe[:DATA]? <trace_name>
Query: Returns the data values contained in the <trace_name>. A TRACe DATA?
query requires a <trace_name> argument to specify the trace data to query.
Example: TRACe[:DATA]? FFT_MAG1
Traces contain different amounts of data. Some may contain only one value,
others, such as the multitone distortion + noise measurement contain 8K of data
bytes. You may use TRACE:POINTS? <trace_name> to determine how
many point are contained (and also if there are no points available for a named
trace). Some trace data points are returned as x-axis/y-axis pairs so that
information like amplitude at a frequency may be determined. This is true of