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Trace Header Transfer
:TRACe:PREamble? [1]|2|3
Returns trace header information for the specified trace.
Data can be transferred to and from the 3 available display traces. Use the commands in
the MMEMory subsystem to store and recall traces from the instrument memory.
The response begins with an ASCII header. The header specifies the number of
following bytes. It looks like #AX, where A is the number of digits in X and X is the
number of bytes that follow the header.
Parameters are returned in comma-delimited ASCII format. Each parameter will be
returned as “NAME=VALUE[ UNITS],”
Valid parameter names are:
Parameter Name Description
SN Instrument serial #
UNIT_NAME Instrument name
DESCR Trace name
DATE Trace date/time
BASE_VER Base FW version
APP_NAME Application name
APP_VER Application FW version
Parameter Name Description
UNITS Amplitude units
CENTER_FREQ Center freq
SPAN Frequency span
FREQ_STEP Frequency step size
RBW Resolution bw
RBW_TYPE RBW coupling auto/manual
VBW Video bw
VBW_TYPE VBW coupling auto/manual
RBW_VBW_RATIO RBW/VBW ratio
SPAN_RBW_RATIO Span/RBW ratio
INPUT_ATTEN Input attenuation
ATTEN_TYPE Attenuation coupling auto/manual
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