Specifications

University of Hertfordshire
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NR (next right) moves the active marker to the next signal peak of higher frequency.
NL (next left) moves the active marker to the next signal peak of lower frequency.
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SNGLS (Single Sweep): Sets the spectrum analyzer to single-sweep mode.
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SP (Span): Changes the total displayed frequency range symmetrically about the center
frequency. Specifying 0 Hz enables zero-span mode, which configures the spectrum
analyzer as a fixed-tuned receiver.
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TDF (Trace Data Format): Formats trace information for return to the controller.
The different trace data formats are as follows:
TDF P
TDF P is the real number format. An example of a trace element returned with the real
number format is 10.00 dB. When querying the trace or marker value, the value is
returned using the amplitude unit set by AUNITS (for example, watts or dBm).
TDF A
TDF A is the A-block data format. With the A-block data format, trace data is preceded
by “#,” “A,” and a two-byte number (the two byte number indicates the number of trace
data bytes). The setting of the MDS command determines whether the trace data is
transferred as one or two 8-bit bytes.
TDF I
TDF I is the I-block data format. With the I-block data format, trace data must be
preceded by “#,” and “I.” The setting of the MDS command determines whether the
trace data is transferred as one or two 8-bit bytes. Unlike using the A-block format, you
do not provide the number of data bytes when sending trace data back to the spectrum
analyzer.
TDF B
TDF B enables the binary format. With the binary format, the marker or trace data is
transferred as bytes. Of all the trace data formats, TDF B transfers trace data the fastest.