Trace Header Transfer

Returns trace header information for the trace. 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 is returned as “NAME=VALUE[ UNITS],” Note that currently only Trace A header is retrieved. Valid parameters are shown in Cable & Antenna Parameter Names.

[1]

Trace Data Query

Transfers the current active trace data from the instrument to the controller. The format of the block data that is returned can be specified by the command :FORMat:DATA. The block data in the command form is always sent in ASCII format.

The response begins with an ASCII header that specifies the number of data 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. The returned block data is separated by comma delimiters. Except for the group delay, each data point consists of a real and imaginary pair scaled by 10^6. For example:

137 point trace returns a total of 1102 data points. The values are returned in threes, fours, and in fives (every 8n-1,8n data point should reconstruct the original trace points).

275 point trace returns a total of 1102 data points. The values are returned in twos (repeated once) with the last value in threes.

551 point trace returns a total of 1102 data points.

1102 point trace returns a total of 2204 data points.

2204 point trace returns a total of 4408 data points.

Trace setup information can be acquired using :TRACe[:DATA]:PREamble?

[1]