Remote Control
R&S
®
ESR
855
User Manual 1175.7068.02 ─ 12
Table 11-24: Return values for TRACE1 to TRACE6 parameter
The trace data consists of a list of power levels that have been measured. The number of power levels in
the list depends on the currently selected number of sweep points. The unit depends on the measurement
and on the unit you have currently set.
If you are measuring with the auto peak detector, the command returns positive peak values only.
If you are working with the "Real/Imag (I/Q)" result display in I/Q Analyzer mode, the command returns two
values for each trace point, first the real parts of the signal, then the imaginary parts (I
1
,...,I
n
, Q
1
,...,Q
n
).
For SEM or Spurious Emission measurement results, the x-values should be queried as well, as they are
not equi-distant (see
Table 11-25: Return values for LIST parameter
For every measurement range you have defined (range 1...n), the command returns eight values in the fol-
lowing order.
<No>,<StartFreq>,<StopFreq>,<RBW>,<PeakFreq>,<PowerAbs>,<PowerRel>,<PowerDelta>,<Limit-
Check>,<Unused1>,<Unused2>
●
<No>: range number
●
<StartFreq>,<StopFreq>: start and stop frequency of the range
●
<RBW>: resolution bandwidth
●
<PeakFreq>: frequency of the peak in a range
●
<PowerAbs>: absolute power of the peak in dBm
●
<PowerRel>: power of the peak in relation to the channel power in dBc
●
<PowerDelta>: distance from the peak to the limit line in dB, positive values indicate a failed limit
check
●
<LimitCheck>: state of the limit check (0 = PASS, 1 = FAIL)
●
<Unused1>,<Unused2>: reserved (0.0)
TRACe<n>[:DATA]:MEMory?
<Trace>,<OffsSwPoint>,<NoOfSwPoints>
This command queries the previously acquired trace data for the specified trace from
the memory. As an offset and number of sweep points to be retrieved can be specified,
the trace data can be retrieved in smaller portions, making the command faster than
the
TRAC:DATA?
command. This is useful if only specific parts of the trace data are of
interest.
If no parameters are specified with the command, the entire trace data is retrieved; in
this case, the command is identical to
TRAC:DATA? TRACE1
Suffix:
<n>
.
1...4
Selects the measurement window.
Query parameters:
<Trace>
TRACE1 | TRACE2 | TRACE3 | TRACE4 | TRACE5 | TRACE6
<OffsSwPoint>
The offset in sweep points related to the start of the measure-
ment at which data retrieval is to start.
<NoOfSwPoints>
Number of sweep points to be retrieved from the trace.
Example:
TRAC:DATA:MEM? TRACE1,25,100
Retrieves 100 sweep points from trace 1, starting at sweep point
25.
Usage:
Query only
Remote Commands in Spectrum Analyzer Mode
