Common Analysis and Display Functions
R&S
®
FSPN
172
User Manual 1179.4363.02 ─ 01
"Right"
Determines the next maximum/minimum to the right of the current
peak.
Remote command:
Find a list of remote commands in
Chapter 11.7.4.4, "Positioning Markers"
Peak Excursion
Defines the minimum level value by which a signal must rise or fall so that it is identi-
fied as a maximum or a minimum by the search functions.
Entries from 0
dB to 60
dB are allowed; the resolution is 0.1
dB. The default setting for
the peak excursion is 1
dB.
Remote command:
CALCulate<n>:MARKer<m>:PEXCursion
Spurious Tracking
Spurs can be unstable regarding their frequency characteristics. In such cases, mark-
ers would not remain on the spur, but on the frequency you have set them on initially.
You can avoid this situation using spurious tracking. Spur tracking makes sure that the
marker remains on the spur, even if the spur changes its frequency. When you turn on
spur tracking, you can define a frequency range within which the R&S
FSPN tracks the
spur and adjusts the marker position automatically.
The tracking "Range" defines an area around the marker position and is a function of
the
(RBW) used in the half decade the marker is in. Note that the
tracking range is dynamic and always relative to the latest marker position, not the ini-
tial marker position.
Example:
You are measuring with an RBW of 10 kHz and place the marker on a spur.
The tracking range is defined as 1 * RBW = 10
kHz.
If the spur changes its position by up to
±
10
kHz, the R&S
FSPN changes the marker
position along with the spur.
contains the tracked spurs and always shows the latest posi-
tion of the spur.
Remote command:
State:
CALCulate<n>:MARKer<m>:FUNCtion:SPTRacking[:STATe]
on page 432
Range:
CALCulate<n>:MARKer<m>:FUNCtion:SPTRacking:RANGe
7.4.3.2
Positioning Functions
Access
: [MKR
➙
]
The following functions set the currently selected marker to the result of a peak search
or set other characteristic values to the current marker value.
Markers
