R&S PR100 User Manual
Suppress Traces: SSTART, SSTOP
Suppress lists are stored as two predefined traces, SSTART (= Suppress
START) and SSTOP (=Suppress STOP). The suppress list has 100 elements
with each element consisting of two frequencies. The frequency pair specifies
a frequency range which is suppressed during the scan. It is irrelevant that the
1st frequency is lower than the 2nd frequency. The sequence in the list is
irrelevant, too. Gaps are specified by the frequency pair 0.0. If one frequency
of the frequency pair is 0, the other frequency of the pair is seen as a single
frequency.
Examples:
1
st
Frequency
2
nd
Frequency Description
118000000 136000000 Suppression of range 118 to 136 MHz
98550000 98450000 Suppression of range 98,450 to 98,550
MHz
0 0 Empty frequency pair (irrelevant)
118375000 0 Suppress single frequency 118,375 MHz
0 123400000 Suppress single frequency 123,400 MHz
127675000 127675000 Suppress single frequency 127,675 MHz
When retrieving the above list via the two queries “TRAC:DATA? SSTART”
and “TRAC:DATA? SSTOP”, the list is slightly corrected: All single
frequencies get the same frequency value in the SSTART and the SSTOP list.
Clearing the suppress lists must always include both commands (TRAC
SSTART, 0; TRAC SSTOP, 0).
1
st
Frequency 2
nd
Frequency
118000000 136000000
98450000 98550000
0 0
118375000 118375000
123400000 123400000
127675000 127675000
In the status reporting system the state of this traces is available in the status
bits (see Section 9.2.1.6).
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