Agilent Technologies N1996A-503 User Reference page 85

Clear All Traces
Clears all traces. Does not affect the state of any function or variable in the box. Loads
minimum trace value into all of the points all traces, except traces in Min Hold in which
case it loads maximum trace value. Does so even if Update is Off for one or more traces.
Remote Command
Example
Key Path
Send/Query Trace Data (Remote Command Only)
This command allows trace data to be sent to the analyzer or queried from the analyzer.
The response to the query is a list of the amplitude points which comprise the requested
trace in the current y axis unit of the analyzer. The x axis unit is that of the destination
trace (for send) or the source trace (for query).
The format and byte-ordering of the sent or received data will be dependent on the
FORMat:DATA and FORMat:BORDer commands. ASCII data consists of a string of
comma separated values. REAL or INTeger data is sent as a definite length block, with a
header describing the data to follow.
For example, a four point trace might look like this if in ASCII (FORMat:DATA ASCIi):
–5.87350E+01, –5.89110E+01, –5.87205E+01, –5.12345E+01<NL><END>
and like this if in INTeger with 4 bytes per point (FORMat:DATA INT,32):
#216<16 bytes of data><NL><END>
where the 2 in the #216 means "2 digits of numeric data to follow", and the 16 is the 2
digits and means "16 binary bytes to follow" (this is the definite length block format).
Note that the data is terminated with <NL><END>. (For LAN, this is <newline> only.)
The data format set by FORMat:DATA and FORMat:BORDer is used both for sending data
to the instrument and receiving data from the instrument.
No units terminator (for example, dB or V) is used when sending data; the data is taken as
being in the current y axis unit of the analyzer.
When a trace is sent to the instrument, it immediately overwrites all of the data in the
target trace, even if that trace is inactive, or even if it is active and in the middle of a
sweep. If in the middle of a set of
invalid measurement data, so caution should be exercised by the user. Similarly, when
querying trace data, it is best if the analyzer is not sweeping during the query. Therefore,
it is generally advisable to be in
the analyzer or querying trace data from the analyzer.
Chapter 3
:TRACe:CLEar:ALL
TRAC:CLE:ALL clears all traces
Trace/Detector, Clear All Traces
Average Max/Min Hold
or
Single Sweep Update
, or
Meas Off (Spectrum Analyzer) Measurement
operations, it can result in
= Off when sending trace data to
Mode
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