R&S 1129.7246.03, Руководство по эксплуатации

Страница: 685 / 855

R&S ESU Remote Control – Description of Commands
TRACe Subsystem
6.246 Operating Manual 1302.6163.12 - 03
6.20 TRACe Subsystem
The TRACe subsystem controls access to the instrument's internal trace memory.
6.20.1 General Trace Commands
TRACe[:DATA] TRACE1 | TRACE2 | TRACE3 | SINGle | PHOLd | SCAN | STATus | FINAL1 | FINAL2
| FINAL3 | LIST | SPURious, <block> | <numeric_value>
This command transfers trace data from the control computer to the instrument, the query reads trace
data out of the instrument.
Programmiing trace data to the instrument is available in spectrum analyzer mode.
The numeric suffix at TRACe<1|2> selects the measurement window.
TRACE1 to TRACE3 selects trace 1 to 3.
LIST reads the peak list in the spurious measurement LIST EVALUATION (for
details on this measurement see page 220).
The suffix at TRACe<1|2> is irrelevant.
As results a list of <result of range 1>,< result of range 2>,..< result of range n> are
returned.
Every single range has following format:
<No>,<Start>,<Stop>,<rbw>,<freq>,<Levelabs>,<Levelrel>,<Delta>,
<Limitcheck>,<unused1>,<unused2>
Where:
If the FM demodulator (option R&S FS-K7) is active, only the displayed trace data
is read out and recalled. A portion of the measurement data that can be called by
means of a marker, however, is calculated from the raw measurement data. These
results are no longer available after recalling a trace; the associated queries gen-
erate a query error.
No Range number
Start Range start frequency
Stop Range stop frequency
Rbw Resolution bandwidth
Freq Frequency of the peak in the range
Levelabs Absolute peak power of the range in dBm
Levelrel Reserved (0.0)
Delta Delta of the peak power to the limit line in dB
Limitcheck Limit check state (0 = PASSED, 1 = FAILED)
Unused1 Reserved (0.0)
Unused2 Reserved (0.0)
These values are defined via the [SENSe<1|2>:]LIST:RANGe<1...20> subsystem
FINAl lists the whole content of the peak list. Each peak element consists of
the following values
4 bytes: Frequency
4 bytes: Absolute level
4 bytes: Delta between absolute level and limit line value at given
frequency. If no limit line is active, the delta value is set to 0.0.