Spectrum Measurements
R&S
®
ESR
281
User Manual 1175.7068.02 ─ 12
File contents
Description
RefType; CPOWER;
TxBandwidth;9540000;Hz
Filter State; ON;
Alpha;0.22;
reference range setup, for details see
PeaksPerRange;1;
Values;4;
evaluation list information
0;-22500000;-9270000;1000000;2986455000;-74.762840
270996094;
-10.576210021972656;-45.762840270996094;PASS;
1;-9270000;-4770000;100000;2991405000;-100.1769561
7675781;
-35.990325927734375;-1.490325927734375;PASS
3;4770000;9270000;100000;3005445000;-100.17695617
675781;
-35.990325927734375;-1.490325927734375;PASS;
4;9270000;22500000;1000000;3018225000;-74.7628402
70996094;
-10.576210021972656;-45.762840270996094;PASS;
information about each peak:
<range number>;
<start frequency>;
<stop frequency>;
<resolution bandwidth of range>;
<frequency of peak>;
<absolute power in dBm of peak>;
<relative power in dBc of peak
(related to the channel power)>;
<distance to the limit line in dB
(positive value means above the limit)>;
<limit fail (pass = 0, fail =1)>;
Fast Spectrum Emission Mask Measurements
In order to improve the performance of the R&S
ESR for spectrum emission mask
measurements, a "Fast SEM" mode is available. If this mode is activated, several con-
secutive ranges with identical sweep settings are combined to one sweep internally,
which makes the measurement considerably more efficient. The displayed results
remain unchanged and still consist of several ranges. Thus, measurement settings that
apply only to the results, such as limits or transducer factors, can nevertheless be
defined individually for each range.
Prerequisites
"Fast SEM" mode is available if the following criteria apply:
●
The frequency ranges are consecutive, without frequency gaps
●
The following sweep settings are identical:
–
"Filter Type", see
–
–
"VBW", see
–
"Sweep Time Mode", see
–
"Ref Level", see
–
"Rf Att. Mode", see
–
"RF Attenuator", see
–
"Preamp", see
Measurements
